U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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(definitions have been obtained from the
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Electronic Products Branch)
Class 526
SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
SERIES
Class Definition:
Class 526 provides for all processes of preparing polymers
from only ethylenically unsaturated monomers and for all
products thereof when such products and processes are not
provided in higher subclasses in the Class 260 schedule
hierarchy.
In addition, Class 526 provides for certain polymerization
processes which are applicable to any type of reactant or
monomer.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A. The following rules apply to claim classification in the
area encompassing subclasses 72 through 352.2 of this class.
(1) For purposes of clarification in this schedule,
subclasses 59-238 will be deemed to be process subclasses,
and subclasses 239-352.2 will be indicated as being product
subclasses.
(2) Patents that claim a product and process, wherein both
the product and the process are specifically provided for in
the schedule, are classified in the process area (59-238) and
cross-referenced to the product area (239-352.2).
(3) Patents that claim a provided for process (59-238) and a
nonprovided for process (other than 89) but where the
monomers being polymerized are provided (239- 352.2) are
classified in the process area (59-238) and cross-referenced
into the product area on the basis of the first appearing
monomer in the schedule that is being polymerized
(239-352.2).
(4) Patents that claim both a provided for (239-352.2)
product and a process of polymerizing (59-238) and wherein
the product is claimed in process terms are classified on the
basis of the process (59-238) and cross-referenced to the
first appearing monomer in the schedule utilized in preparing
the polymer.
(5) Patents that claim a product solely in process terms are
classified on the basis of the process (59-238) when said
process is provided in the schedule and cross-referenced to
the first appearing monomer in the schedule utilized in
preparing the polymer.
(6) Patents that claim a product in process terms and
wherein the process is not provided in subclasses (59-238)
are classified on the basis of the first appearing monomer in
the schedule utilized in preparing the polymer.
(7) Patents that claim a polymerizable composition or the
preparation of a polymerizable composition are classified on
the basis of the first apearing monomer (239-352.2) in the
schedule that is part of the polymerizable composition.
(8) Patents that claim a polymer only are classified on the
basis of the first appearing monomer in the schedule
(239-352.2) that has been polymerized in preparing the
polymer.
(9) Patents that claim merely vulcanizing, curing, or
cross-linking of a polymer proper for this area, without the
presence of a specified vulcanizing, curing, or cross-linking
agent, or the amount of the chemical agent or the vulcanized,
cured or cross-linked product of such a reaction are
classified on the basis of the first appearing monomer in the
schedule (239-352.2) that has been polymerized in preparing
the polymer.
(10) Patents that claim a polymer which is the result of a
degradation of a polymer proper for this area (239-352.2) and
wherein the degradation has been effected in the absence of
any chemical agent are classified on the basis of the initial
first appearing monomer in the schedule (239-352.2) that has
been polymerized in preparing the previously-formed polymer
that is degraded.
(11) Each product subclass, subclasses 239-352.2 unless
specifically limites in its title, includes homopolymers and
interpolymers.
(12) "Interpolymerized" as used throughout the product area
subclasses 239-352.2 includes all combinations of the
necessary monomers as required in the definition of the
particular subclass in combination with any other monomer not
provided for in a higher subclass of the schedule.
(13) A monomer for purposes of this subclass is a material
which occurs in a polymer as a repeating unit and is present
in at least three units and as used herein "monomer" is meant
to exclude catalyst residues, chain transfer agents, etc;
however, a nonethylenic carbohydrate or nonethylenic protein
which is present during polymerization of an ethylenic
monomer and which is described as chemically bonded to the
polymer is proper subject matter for Class 527, subclasses
313+.
(14) This subclass provides for processes wherein an
ethylenically unsaturated monomer is undergoing
polymerization and concurrently therewith is reacting with a
second ethylenic material, which second ethylenic material
does not enter into the polymer backbone, e.g., polymerizing
acrylic acid in the presence of allyl alcohol so that the
final polymer is a polymerized acrylic acid having ester
groups which are derived from the unsaturated alcohol.
(15) The sole requirement for the products of this subclass
is that the polymerization reaction involve only ethylenic
unsaturated monomers. Note, however, that the actual
polymerization mechanism need not involve the ethylenically
unsaturated group (e.g., polymerization of a glycidyl
methylacrylate may involve the double bond in one instance
and in another instance may involve the ring opening of the
epoxy group, etc.).
(16) The treatment of a liquid polymer derived from an
unsaturated monomer which is to be further polymerized is
regarded as involving polymerization rather than as an
after-treatment of a polymeric polymer and is therefore
classified in this area as against the chemical
after-treatment area, Class 525, subclasses 326.1+.
(17) In subclasses 239-352.2 each indent of a specific form
of "from monomer" only refers to species of that type monomer
and not to other monomers that may be interpolymerized
therewith. When other monomers which are not species of the
"from monomers" are to be taken into account the subclass has
been identified as "interpolymerized."
B. The following are lines relating to special subclasses:
(1) Subclasses 218.1+, 219.3+, 219.6
(1) Note. A patent which recites a polymerization process
which utilizes (a) a material proper for subclasses 218.1+ in
combination with either a specified or nonspecified amount of
"hydrocarbon or halohydrocarbon" will not be classified in
subclass 219.3 or its indents, but will be found in 219.6 or
218.1+; proper, however, for subclass 219.3 or its indents is
the situation wherein when either the hydrocarbon or
halohydrocarbon is defined in some degree (e.g.,
dihalogenated, dibrominated, contains specified chain length,
boiling or freezing point range, etc.); (b) a "free radical"
catalyst with either a specified or nonspecified amount of
"hydrocarbon or halohydrocarbon" will be classified with the
polymer providing this was the only remaining basis for
classification.
SUBCLASSES
Subclass:
59
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a process parameter is
determined and some polymerization process parameter is
altered in response to the determination.
(1) Note. A test or measurement performed by a human being
with a subsequent control operation is proper herein.
(2) Note. Treating a material to a certain condition
without a defined inanimate measurement, test, inspection, or
control (e.g., temperature, pH, etc.) is not proper subject
matter for this subclass and classification of such a process
will be accorded on some other basis.
Subclass:
60
This subclass is indented under subclass 59. Subject matter
wherein a polymerization process parameter is altered in
response to the composition or composition property and
wherein the composition property is other than density, per
se.
(1) Note. Included within the definition of composition or
composition property is the determination of the identity of
a component or the relative amount of a component in a
stream, electrical conductivity, redox, potential, pH
measurement, molecular weight, melt index, optical
properties, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for a process involving measurement of density, per se,
followed by a control operation in response to the
measurement.
Subclass:
61
This subclass is indented under subclass 59. Processes
wherein a polymerization process parameter is altered in
response to a determination of temperature or pressure.
Subclass:
62
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein the polymerization reaction
takes place in (1) a reactor of specified material; or (2) a
reactor part is of a specified material; or (3)wherein the
reactor or part of the reactor has been treated in some
manner.
(1) Note. Specified material includes a recitation that the
reactor material be free from certain specified material.
(2) Note. Included herein but not limited to the enumerated
examples are stainless steel and glass-lined reactors,
reactor parts such as titanium stirrers, and reactors that
have been subjected to a specified wash or the application of
a coating material.
Subclass:
63
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein heat exchange or reduction of
particle size of a polymerizing polymer is effected by direct
contact of said polymerizing polymer with an inert-solid mass
which solid is not an internal part of the polymerization
apparatus or of the processing apparatus.
(1) Note. "Inert-solid mass" includes steel shot and ceramic
rollers.
(2) Note. This subclass does not include indirect cooling or
heating (e.g., cooling outside of reactor so as to cool
reactor contents, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
88 for mixing, agitating, etc. of a polymerizing polymer
utilizing a stirrer or some other means which means or
stirrer is part of the apparatus or processing equipment.
Subclass:
64
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein polymerization is effected in a
loop or tubular reactor.
(1) Note. A loop reactor for purposes of this subclass is
an apparatus wherein polymerization material is circulated in
a continuous path within a single or multicoiled or spiraled
structure which has at least one inlet and outlet means and
at least one reaction zone.
(2) Note. A tubular reactor for purposes of this subclass
is an apparatus wherein polymerizable material flows in an
essentially linear direction in a tube or series of
interconnected tubes, which tube or tubes are of small
diameter in relation to their length and wherein each tube
has at least one inlet and outlet means and one or more
polymerization reaction zones.
Subclass:
65
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein polymerization is effected in
at least two or more physically distinct zones, (e.g.,
regions, stages, etc.) said zones being part of a single
reactor which has a plurality of such physically distinct
zones or such zones may be part of separate polymerization
reactors which are interconnected at some point.
(1) Note. For the most part patents herein relate to
advancement of polymerizing materials from one zone to
another so as to effect a progressive degree of
polymerization and which are usually advanced until the
degree of polymerization is brought to the desired state.
Subclass:
66
This subclass is indented under subclass 65. Subject matter
wherein material (e.g., monomer, catalyst, etc.) is added to
a zone containing polymerizable material therein, said
polymerizable material being in a state undergoing active
polymerization and wherein said material is added in a
sequential or incremental manner.
(1) Note. "Sequential or incremental" addition requires (1)
the addition of material involving a halting, interruption,
or pausing in the addition of the same material followed by a
resumption of addition; or (2) the addition of materials to a
polymerization zone followed by the addition of materials
distinct from the previous material, or (3) the addition of
disproportionate amounts of materials so that the addition of
one is completed prior to the completion of the addition of
the other material.
Subclass:
67
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein a portion of material is
removed from a zone wherein material is undergoing
polymerization and the removed material either with something
added to it, removed from it, or the removed material, per
se, is added to a zone wherein an active polymerization is
occurring.
Subclass:
68
This subclass is indented under subclass 67. Subject matter
wherein monomer is removed from and recycled back to an
ongoing polymerization reaction zone.
(1) Note. The removal herein need only involve a monomer.
For instance, removing material containing monomer admixed
with diluent and the recycling of both would be proper
herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 for processes involving removing catalyst or catalyst
component together with monomer and recycling of only the
catalyst.
70 for processes involving removing monomer and diluent and
recycling only the diluent.
Subclass:
69
This subclass is indented under subclass 67. Subject matter
wherein a catalyst or catalyst constituent is removed from
and recycled back to an ongoing polymerization zone.
(1) Note. The removal herein need not solely involve a
catalyst or catalyst constituent. For instance, removing a
catalyst admixed with a diluent and the recycling of both
would be proper herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
70 for processes involving removing a catalyst or catalyst
component and a diluent and the recycling of only the
diluent.
Subclass:
70
This subclass is indented under subclass 67. Subject matter
wherein a diluent or diluent component is removed from and
recycled back to an ongoing polymerization zone.
Subclass:
71
This subclass is indented under subclass 1. Subject matter
under Class 520, ... wherein only nonpolymerizable material
is removed during the polymerization reaction.
(1) Note. Excluded from this subclass is the removal of
polymerized materials admixed with nonpolymerized or
nonpolymerizable material.
Subclass:
72
This subclass is indented under subclass 1. Subject matter
under Class 520, ... involving polymers derived from
ethylenically unsaturated monomers only and processes of
polymerizing same; polymerizing compositions containing
ethylenically unsaturated monomers only and processes of
preparing polymerizable compositions.
(1) Note. This subclass provides for processes wherein an
ethylenically unsaturated monomer is undergoing
polymerization and concurrently therewith is reacting with a
second ethylenic material, which second ethylenic material
does not enter into the polymer backbone, e.g., polymerizing
acrylic acid in the presence of allyl alcohol so that the
final polymer is a polymerized acrylic acid having ester
groups which are derived from the unsaturated alcohol.
(2) Note. The sole requirement for the products of this
subclass is that the polymerization reaction involve only
ethylenic unsaturated monomers. Note, however, that the
actual polymerization mechanism need not involve the
ethylenically unsaturated group (e.g., polymerization of a
glycidyl methylacrylate may involve the double bond in one
instance and in another instance may involve the ring opening
of the epoxy group, etc.).
(3) Note. This subclass and its indents provide for
processes for adding material to an ongoing polymerization
process or where preformed liquid polymers are further
polymerized so as to form a final polymerized product.
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclasses 242+,
for products resulting from or involving a polymer derived
from only ethylenic monomers reacted with an ethylenically
unsaturated reactant, or for products resulting from or
involving a polymer derived from at least only ethylenic
monomers reacted in the presence of an ethylenically
unsaturated monomer. Subclasses 242+ also provides for the
processes of preparing products properly classifiable within
the subclass.
528, Synthetic Resins or Natural Rubbers, subclasses 480+
for processes of treating a polymer not involving a chemical
modification of the polymer, by the addition of a material
thereto and for chemically modifying materials other than the
ethylenic polymer. Subclasses 480+ also provide for the
processes of admixing with a broadly claimed nonreactant
material.
Subclass:
73
This subclass is indented under subclass 72. Subject matter
wherein the polymerization reaction is effected using at
least two different pressures or at least two different
temperatures.
(1) Note. The temperature or pressure must be increased or
decreased under controlled conditions so that the temperature
or pressure is maintained for a definite period of time prior
to the raising or lowering of the temperature or pressure.
(2) Note. The mere recitation of a range of temperatures or
pressures is not considered sufficient to be considered as
being different temperatures or pressures.
Subclass:
74
This subclass is indented under subclass 72. Subject matter
wherein material that would normally form during a
polymerization reaction and which would clog or foul the
polymerization equipment is removed from or is prevented or
inhibited from forming by the use of a nonpolymerizable
material, which material is other than a hydrocarbon or
halogenated hydrocarbon used in solvent or diluent amount.
(1) Note. Included herein but not limited to the specific
examples are patents which specifically claim the use of
materials to remove or inhibit forming of fouling materials
by solvents, surfactant surface treatments during
polymerization, or maintaining a fluid film between the
polymerization equipment and the polymerizing materials.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 for a process of polymerizing in reactor or defined
material or in reactor which has been treated prior to
polymerization therein.
subclasses 89+ for processes of polymerizing in a specific
diluent or solvent wherein reaction buildup is alleviated by
the inherent use of a solvating material; and for processes
of polymerizing in a hydrocarbon or halogenated hydrocarbon
diluent together with a specific material wherein the
hydrocarbon or halogenated hydrocarbon may prevent fouling of
the reactor.
239 through 352.2, appropriate product for processes of
polymerizing in a hydrocarbon or chlorinated hydrocarbon
diluent or solvent.
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclass 484, for
processes of removing buildup on reactor or processing
equipment subsequent to polymerization.
Subclass:
75
This subclass is indented under subclass 72. Subject matter
which includes the chemical synthesis of a monomer or a
prepolymer and subsequent polymerization thereof.
(1) Note. A prepolymer for purposes of the subclass is a
low-molecular-weight-polymeric material prepared from a
single source product and which is regarded as an
intermediate reactant rather than as a final product and
which is further polymerizable by a continuation of the same
reaction as used in preparing said prepolymer.
(2) Note. Included herein are processes involving
dimerization or trimerization of monomer.
SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, and its daughter classes,
for a method of preparing a polymerizable monomer or
prepolymer.
Subclass:
76
This subclass is indented under subclass 75. Subject matter
wherein the monomer or prepolymer is derived from a petroleum
fraction.
(1) Note. Included herein are processes of recovering
hydrocarbon materials from a crude-natural source followed by
a chemical reaction (e.g., dimerization, etc.) and subsequent
final polymerization.
Subclass:
77
This subclass is indented under subclass 72. Subject matter
which includes the step of purifying the ethylenic monomer.
(1) Note. Purification for this subclass may be for any
number of reasons (e.g., removing impurities which inhibit
polymerization, removing impurities which may be undesirable
in the final polymer, etc.).
(2) Note. Included in this subclass are processes involving
physical treatments (e.g., distillation, sorbent extraction,
etc.) as well a processes involving chemical interaction of
the impurity or undesired constituents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for processes of chemically modifying a monomer or
prepolymer.
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclasses 480+,
for processes of purifying a polymer by either a chemical or
physical process.
Subclass:
78
This subclass is indented under subclass 72. Subject matter
wherein material which is added to a zone, said zone
containing material therein which is undergoing
polymerization, and the addition of the material is other
than by the continuous addition of the material contained in
the initial change.
(1) Note. For purposes herein, addition proper for this
subclass involves any of the following (1) the addition of
material to a polymerization zone and continuing the
polymerization without any subsequent addition, or (2) the
addition of materials to a polymerization zone followed by
the addition of materials distinct from the previous material
either in whole-amount or in the addition of the same
material in different concentration, or (3) the addition of
material to terminate polymerization, or (4) the addition of
material with the addition involving a halting, interruption,
pausing, or suspending of adding material at any time during
the polymerization reaction or (5) the addition of a material
to a zone wherein all of the other necessary materials are
present except the one being added.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 72+ for a method of polymerization involving the
continuous addition of material to a zone.
Subclass:
79
This subclass is indented under subclass 78. Subject matter
wherein the material is added in an incremental or sequential
manner.
(1) Note. "Sequential or incremental" addition requires (1)
the addition of material involving a halting interruption, or
pausing in the addition of the same material followed by a
resumption of addition; or (2) the addition of materials to a
polymerization zone followed by the addition of material
distinct from the previous materials; or (3) the addition of
disproportionate amounts of material so that the addition of
one is completed prior to the completion of the addition of
the other material.
Subclass:
80
This subclass is indented under subclass 79. Subject matter
wherein the polymerization reaction is effected in the
presence of water.
Subclass:
81
This subclass is indented under subclass 80. Subject matter
wherein the added material is devoid of monomer.
Subclass:
82
This subclass is indented under subclass 78. Subject matter
wherein the added material terminates or retards the
polymerization reaction (e.g., polymerization inhibitor,
terminator, chain-transfer agent, short-stopper, etc.).
Subclass:
83
This subclass is indented under subclass 82. Subject matter
wherein the added terminating or inhibiting material contains
a nitrogen-containing compound.
Subclass:
84
This subclass is indented under subclass 82. Subject matter
wherein the added terminating or retarding material contains
an oxygen-containing compound.
(1) Note. This subclass includes the use of water, per se,
as a retarding or terminating agent.
Subclass:
85
This subclass is indented under subclass 82. Subject matter
wherein the added terminating or retarding material contains
a sulfur atom.
Subclass:
86
This subclass is indented under subclass 78. Subject matter
wherein the added material is the catalyst or a part of the
catalyst system.
Subclass:
87
This subclass is indented under subclass 78. Subject matter
wherein the added material is an ethylenically unsaturated
monomer.
Subclass:
88
This subclass is indented under subclass 72. Subject matter
wherein the polymerization process involves specific mixing,
stirring, agitating, or the movement of material.
(1) Note. Specified for purposes of this subclass requires
the naming of a movement-imparting rotor, stirrer, impeller
or any other device in terms of its specified dimension,
design, size, or shape thereof, or requires the recitation of
a reactor of a design to facilitate movement or agitation; or
requires a positive recitation in the claims as to velocity
or designated time of mixing, said time being either
continuous or intermittent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 72+ for mere agitating during a polymerization
reaction.
Subclass:
89
This subclass is indented under subclass 72. Subject matter
wherein an ethylenically unsaturated monomer is polymerized
in the presence of a specified material.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "specified material".
Subclass:
90
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least one
transition metal atom.
(1) Note. "Transition metal" for purposes of this subclass
is limited to elements of atomic numbers 21-29, 39-47, 57-79,
and 89 and higher and does not include Zn, Cd, and Hg.
"Nontransition metal" as used throughout this schedule is
intended to include all metals other than the transition
metals.
(2) Note.
(a) Nontransition metal atom-to-carbon bond as used
throughout this schedule includes all compounds that contain
at least one carbon atom bonded to at least one nontransition
metal atom.
(b) Nontransition metal hydride as used through this
schedule includes all compounds that contain at least one
hydrogen atom bonded to at least one nontransition metal.
(c) Included within the scope of compounds encompassed by
the definition of 2(a) and 2(b) above are those compounds
having two or more nontransition metal atoms wherein
additionally one of said atoms is bonded to a carbon or
hydrogen atom and wherein one of said nontransition metal
atoms is not bonded to a hydrogen or carbon atom.
(3) Note.
(a) Metal borohydrides (e.g., LiBH[subscrpt]4[end subscrpt],
Ti(BH[subscrpt]4[end subscrpt])[subscrpt]3[end subscrpt],
etc.) are classified as if they are hydrides of boron and of
the metal atom.
(b) Mixed metal hydrides (e.g., NaA1H[subscrpt]4[end
subscrpt], (CaALH[subscrpt]4[end subscrpt])[subscrpt]2[end
subscrpt], etc.) are classified as if they are hydrides of
aluminum and of the other metal.
(c) In those instances where a carbon atom has replaced at
least one or more hydrogen atoms of compounds as elaborated
in 3(a) above, then classification is made as if these
compounds are alternatively bonded to a boron atom and to a
metal, and in those cases wherein a carbon atom has replaced
at least one or more hydrogen atoms of compounds as
elaborated in 3(b) above, then classification is made as if
these compounds are alternatively bonded to either one of the
metal atoms.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for a mixture of LiBH[subscrpt]4[end subscrpt] and Ti
Cl[subscrpt]4[end subscrpt].
159 for a mixture of NaAl H[subscrpt]4[end subscrpt] and Ti
Cl[subscrpt]4[end subscrpt].
Subclass:
91
This subclass is indented under subclass 90. Subject matter
wherein transition material is in contact with water during
the polymerization reaction.
(1) Note. The amount of water present during the
polymerization reaction is of no significance (e.g., diluent,
catalyst, activator, etc)..
(2) Note. Water of hydration, per se, is not considered as
being water for this subclass.
(3) Note. The use of a catalyst system or other material
which has been prepared in the presence of water is not
proper for this subclass unless it is understood that free
water remains after the material has been formed.
Subclass:
92
This subclass is indented under subclass 91. Subject matter
wherein the transition metal atom is bonded to at least one
carbon atom; or wherein the transition metal material is in
admixture with a compound that contains at least one metal
atom bonded to a carbon atom.
Subclass:
93
This subclass is indented under subclass 91. Subject matter
wherein at least one atom is a Group VIII metal (i.e., Fe,
Co, Ni, Ru, Rh, Pd, Os, Ir, Pt).
Subclass:
94
This subclass is indented under subclass 93. Subject matter
wherein (1) the transition metal atom exists as a part of a
sulfur-containing organic compound; or (2) the transition
metal material is in admixture with an organic
sulfur-containing compound.
Subclass:
95
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal
atom as part of a binary compound solely composed of a single
transition metal and oxygen.
(1) Note. Included herein are supports for active
ingredients wherein the support may be an oxide of a
transition metal (e.g., thoria, titania, etc.).
(2) Note. Excluded from this subclass are the peroxides of
a transition metal.
(3) Note. This subclass includes reaction products or
reaction mixtures of transition metal oxides wherein the
surface of the transition metal oxide may be modified (e.g.,
TiO[subscrpt]2[end subscrpt] chemically bonded to
TiCl[subscrpt]4[end subscrpt] on its surface) but wherein the
material is still regarded as being in oxide form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
172 for a binary peroxide containing a transition metal and
oxygen.
Subclass:
96
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains at least two
transition metal atoms, one of said transitional metal atoms
being in elemental form or as part of a nonbinary oxide
compound.
Subclass:
97
This subclass is indented under subclass 96. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or in the form of a hydride, or as a
compound wherein the nontransition metal is bonded directly
to a carbon atom.
Subclass:
98
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains elemental halogen or
a nonmetal halogen-containing compound.
Subclass:
99
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains at least one aluminum
compound having an aluminum atom bonded to halogen, and
wherein said same aluminum atom is not bonded to a carbon or
hydrogen atom.
Subclass:
100
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains at least one
nonmetallic, organic, nitrogen, oxygen, sulfur or
phosphorus-containing compound.
Subclass:
101
This subclass is indented under subclass 95. Subject matter
wherein the specified material consists of at least two
transition metal oxides, at least two of said transition
metal oxides being other than oxides of Ti, Zr, Hf, or Th.
(1) Note. Proper for this subclass are ternary systems
containing three transitional metal oxides wherein one of the
oxides is of Ti, Zr, Hf or Th and wherein the other two
oxides are not of those transition metals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
103 for a mixture of a Group VIII oxide and an oxide of Ti,
Zr, Hf, or Th.
104 for a mixture of a Group VIB oxide and/or oxide of Ti,
Zr, Hf, or Th.
Subclass:
102
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains an elemental
nontransitional heavy metal or a compound of a nontransition
heavy metal.
Subclass:
103
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains an oxide of a Group
VIII metal, i.e., Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt.
Subclass:
104
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains an oxide of a Group
VIB metal, i.e., Cr, Mo, W.
Subclass:
105
This subclass is indented under subclass 104. Subject matter
wherein the specified material contains an elemental nonheavy
metal, or contains a hydride of a nonheavy metal, or contains
a compound having a nonheavy metal to carbon bond.
Subclass:
106
This subclass is indented under subclass 104. Subject matter
wherein the specified material contains an oxide of
chromium.
Subclass:
107
This subclass is indented under subclass 95. Subject matter
wherein the specified material contains an oxide of a Group
IVB metal, i.e., Ti, Zr, Hf.
Subclass:
108
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal in
elemental form.
(1) Note. Included within the term elemental metal are
alloys.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 for processes of polymerizing in a reactor wherein one of
the reactor surfaces which contacts the polymerizing material
is a transition metal in elemental form.
Subclass:
109
This subclass is indented under subclass 108. Subject matter
wherein the specified material contains an elemental
transition metal in admixture with a compound that contains
an -O-O-group.
Subclass:
110
This subclass is indented under subclass 108. Subject matter
wherein the specified material contains an elemental
transition metal which is in admixture with a nontransition
metal, or is in admixture with a hydride of a nontransition
metal, or is in admixture with a compound of a nontransition
metal wherein a nontransition metal atom is directly bonded
to a carbon atom.
Subclass:
111
This subclass is indented under subclass 110. Subject matter
wherein the specified material contains at least one
nonmetallic material which contains a nitrogen, oxygen,
sulfur or phosphorus atom.
(1) Note. Excluded from this area is the use of nitrogen or
air as merely carrier or blanket gases.
Subclass:
112
This subclass is indented under subclass 108. Subject matter
wherein the specified material contains an elemental
transition metal which is in admixture with a transition
metal compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
108 for an admixture of two or more elemental transition
metal atoms, e.g., alloys, etc.
Subclass:
113
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains (1) two compounds
having diverse transition metal atoms; or (2) a single
compound having at least two diverse transition metal atoms
therein, e.g.,
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 118+ for a specified material containing two or
more compounds of the same transition metal. [figure]
Subclass:
114
This subclass is indented under subclass 113. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom.
Subclass:
115
This subclass is indented under subclass 114. Subject matter
wherein at least one of the transition atoms present is a
Group VIII element, i.e., Fe, Co, Ni, Ru, Rh, Pd, Os, Ir,
Pt.
Subclass:
116
This subclass is indented under subclass 114. Subject matter
wherein at least one of the transition metal atoms present is
a Group IVB atom and wherein at least one of the different
transition metal atoms present is a Group VB atom (e.g.,
TiCl[subscrpt]4[end subscrpt] and VOCL[subscrpt]3[end
subscrpt], etc.).
(1) Note. A Group IV atom is Ti, Zr, Hf. A Group VB atom is
V, Nb, Ta.
Subclass:
117
This subclass is indented under subclass 113. Subject matter
wherein at least one of the transition metal atoms present is
a Group VIII element, i.e., Fe, Co, Ni, Ru, Rh, Pd, Os, Ir,
Pt.
Subclass:
118
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains at least two
different transition metal compounds, each of said compounds
containing the same transition metal atom.
(1) Note. Excluded from this subclass are compositions
containing two or more distinct compounds of the same
transition elements when such compositions are the result of
a reaction wherein a part of the original transition metal
compound is converted to a different compound form (e.g.,
partial reduction of TiCl[subscrpt]4[end subscrpt] with
AlR[subscrpt]3[end subscrpt]) to form a mixture of
TiCl[subscrpt]4[end subscrpt] and TiC[subscrpt]l3[end
subscrpt], etc. However, a patent claim wherein TiCl4 and
TiCl[subscrpt]3[end subscrpt] are separately added would be
proper herein.
Subclass:
119
This subclass is indented under subclass 118. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom.
Subclass:
120
This subclass is indented under subclass 90. Subject matter
wherein (1) the specified material contains a transition
metal compound which is in admixture with a compound
containing a heavy metal atom and which heavy metal is other
than a heavy metal atom directly bonded to a carbon atom or
to a hydrogen atom; or (2) wherein a transition metal
containing compound additionally contains at least one heavy
metal atom in the same molecule, which heavy metal atom is
not directly bonded to a hydrogen or carbon atom (e.g.,
mercuric tungstate, or a mixture of NiCl[subscrpt]2[end
subscrpt] and ZnCl[subscrpt]2[end subscrpt], etc.).
Subclass:
121
This subclass is indented under subclass 120. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom.
(1) Note. Included in this subclass are compounds which may
contain two heavy metal atoms and wherein one of the metal
atoms may be attached to a carbon or hydrogen atom and
wherein the other heavy metal atom is not attached to a
hydrogen or carbon atom.
Subclass:
122
This subclass is indented under subclass 121. Subject matter
wherein the heavy metal compound contains a halogen atom
(e.g., SnCl[subscrpt]4[end subscrpt], (R-O)[subscrpt]3[end
subscrpt]SnCl, etc.).
Subclass:
123.1
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal
compound which is in admixture with a Group IA or IIA metal
compound, which compound is other than a Group IA or Group
IIA metal hydride or compound containing a Group IA or Group
IIA metal atom bonded directly to a carbon atom; or wherein a
transition metal-containing compound additionally contains at
least one Group IA or Group IIA metal atom in the same
molecule, which Group IA or Group IIA metal atom is not
bonded directly to a hydrogen or carbon atom (e.g.,
Ca(NR[subscrpt]2[end subscrpt])[subscrpt]2[end subscrpt],
NaNH[subscrpt]2[end subscrpt], etc.).
(1) Note. Included in this subclass are compounds which may
contain two alkali metal atoms and wherein one of the alkali
metal atoms may be attached to a carbon or hydrogen atom and
wherein the other alkali metal atom is not attached to a
carbon or hydrogen atom (e.g., NaCH[subscrpt]2[end
subscrpt]CH[subscrpt]2[end subscrpt]ONa, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for a specified material containing a transition metal
compound and an elemental Group IA or Group IIA metal atom.
Subclass:
124.1
This subclass is indented under subclass 123.1. Subject
matter wherein the specified material contains a
nontransition metal in elemental form, or contains a hydride
of a nontransition metal, or contains a compound of a
nontransition metal wherein the nontransition metal is
directly bonded to a carbon atom.
(1) Note. Examples of substances provided for herein as
contained in the specified material are lithium metal,
MgH[subscrpt]2[end subscrpt], Al(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]3[end
subscrpt], and C[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt]MgCl.
Subclass:
124.2
This subclass is indented under subclass 124.1. Subject
matter wherein the specified material contains a magnesium
compound having no carbon to magnesium or hydrogen to
magnesium bonds.
(1) Note. Examples of substances provided for herein as
contained in the specified material are MgCl[subscrpt]2[end
subscrpt], MgO, and Mg(OC[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]2[end
subscrpt].
SEE OR SEARCH THIS CLASS, SUBCLASS:
941 for a cross-reference art collection pertaining to the
subject matter of this subclass and its indents.
Subclass:
124.3
This subclass is indented under subclass 124.2. Subject
matter wherein an additional specified material is present
(i.e., there are four or more specified materials present).
(1) Note. This subclass provides, inter alia, for the
combination of TiCl[subscrpt]4[end subscrpt],
MgCl[subscrpt]2[end subscrpt], Al(CH[subscrpt]3[end
subscrpt])[subscrpt]3[end subscrpt] and an additional
specified material such as Al(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]3[end
subscrpt], PCl[subscrpt]3[end subscrpt] or alcohol.
(2) Note. Material such as Mg[subscrpt]m [end
subscrpt]Ti(OR) [subscrpt]m[end subscrpt]X[subscrpt]p[end
subscrpt]{ED}[subscrpt]q[end subscrpt] wherein R is
hydrocarbon, X is halogen and ED is a specified material such
as a carboxylic acid ester will be considered to represent a
mixture of specified materials rather than a unitary
compound. In this particular mixture, ED represents the
additional specified material which satisfies the requirement
of this subclass.
(3) Note. For purpose of this and indented subclasses,
materials such as MgCl[subscrpt]2 deg.[end
subscrpt]2H[subscrpt]2[end subscrpt]O are generally regarded
as constituting two specified materials (i.e.,
MgCl[subscrpt]2[end subscrpt] and H[subscrpt]2[end
subscrpt]O). See Search This Class, Subclass, infra.
SEE OR SEARCH THIS CLASS, SUBCLASS:
124.4 for MgCLI[subscrpt]2[end subscrpt].2H[subscrpt]2[end
subscrpt]O considered as a single specified material.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "specified material".
Subclass:
124.4
This subclass is indented under subclass 124.3. Subject
matter wherein there is present (1) two different magnesium
compounds neither of which contains a carbon to magnesium or
a hydrogen to magnesium bond, or (2) a Group IA metal or
nonmagnesium Group IIA metal compound, neither of which
contains a bond between carbon or hydrogen and the Group IA
or Group IIA metal.
(1) Note. An example of (1), supra, is the combination of
MgCl[subscrpt]2[end subscrpt] and Mg(OC[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]2[end
subscrpt]. An example of (2), supra, is MgCl[subscrpt]2[end
subscrpt] KCl 6H[subscrpt]2[end subscrpt]O.
Subclass:
124.5
This subclass is indented under subclass 124.3. Subject
matter wherein the additional specified material is an
inorganic compound that contains oxygen and silicon or oxygen
and aluminum.
(1) Note. Examples of additional specified materials
provided for herein are SiO[subscrpt]2[end subscrpt],
Al[subscrpt]2[end subscrpt]O[subscrpt]3[end subscrpt], and
H[subscrpt]3[end subscrpt]Si-O-SiH[subscrpt]3[end subscrpt].
Subclass:
124.6
This subclass is indented under subclass 124.5. Subject
matter wherein an organic material that contains boron,
silicon, nitrogen, phosphorus or chalcogen is present and
does not contain metal.
(1) Note. Examples of material provided for herein are
B(C[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]3[end subscrpt], ethyl acetate,
CH[subscrpt]3[end subscrpt]SiHCl[subscrpt]2[end subscrpt],
etc.
(2) Note. Chalcogen is defined as oxygen, sulfur, selenium,
or tellurium.
Subclass:
124.7
This subclass is indented under subclass 124.3. Subject
matter wherein there are present plural nontransition
elemental metals, hydrides thereof, or compounds of a
nontransition metal wherein the nontransition metal is bonded
directly to a carbon atom or to a hydrogen atom, or mixtures
thereof.
(1) Note. Examples of combinations provided for herein are:
(1) lithium metal and Al(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]3[end
subscrpt], (2) MgH[subscrpt]2[end subscrpt] and
C[subscrpt]2[end subscrpt]H[subscrpt]5[end subscrpt]MgCl, (3)
Mg(C[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]2[end subscrpt] and Mg(CH[subscrpt]3[end
subscrpt])[subscrpt]2[end subscrpt], (4) lithium metal and
calcium metal.
Subclass:
124.8
This subclass is indented under subclass 124.7. Subject
matter wherein an organic material that contains boron,
silicon, nitrogen, phosphorus or chalcogen is present and
does not contain metal.
(1) Note. Chalcogen is defined as oxygen, sulfur, selenium,
or tellurium.
Subclass:
124.9
This subclass is indented under subclass 124.3. Subject
matter wherein the additional specified material is an
organic material that contains boron, silicon, nitrogen,
phosphorus or chalcogen and does not contain metal.
(1) Note. Chalcogen is defined as oxygen, sulfur, selenium,
or tellurium.
Subclass:
125.1
This subclass is indented under subclass 124.9. Subject
matter wherein an organic aluminum compound which is devoid
of any bonds between the aluminum and carbon or hydrogen
atoms is present.
(1) Note. Examples of compounds provided for herein are
Al(OC[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]3[end subscrpt] and Al{N(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]2[end
subscrpt]}[subscrpt]2[end subscrpt]Cl.
Subclass:
125.2
This subclass is indented under subclass 124.9. Subject
matter wherein a compound which contains only (1) carbon,
hydrogen and halogen atoms, or (2) carbon and halogen atoms
is present.
(1) Note. Examples of compounds provided for herein are
CCl[subscrpt]4[end subscrpt] and CHCl[subscrpt]3[end
subscrpt].
Subclass:
125.3
This subclass is indented under subclass 124.9. Subject
matter wherein an organic material which contains boron or
silicon but does not contain metal is present.
(1) Note. Examples of materials provided for herein are
B(OC[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]3[end subscrpt], Si(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]4[end
subscrpt], and Si(CH[subscrpt]3[end
subscrpt])Cl[subscrpt]3[end subscrpt].
Subclass:
125.4
This subclass is indented under subclass 124.9. Subject
matter wherein an inorganic material having no bonds between
hydrogen and metal is present.
(1) Note. Examples of materials provided for herein are
HSiCl[subscrpt]3[end subscrpt], MgCl[subscrpt]2[end subscrpt]
H[subscrpt]2[end subscrpt]O and BCl[subscrpt]3[end
subscrpt].
Subclass:
125.5
This subclass is indented under subclass 125.4. Subject
matter wherein the inorganic material is an aluminum halide.
Subclass:
125.6
This subclass is indented under subclass 124.9. Subject
matter wherein there are at least two different organic
materials present, each contains nitrogen, phosphorus or
chalcogen and does not contain metal.
(1) Note. Examples of combinations of materials provided for
herein are (1) P(OC[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]3[end subscrpt] and C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt]OH, and (2)
CH[subscrpt]3[end subscrpt]OH and C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt]OH.
(2) Note. Chalcogen is defined as oxygen, sulfur, selenium,
or tellurium.
Subclass:
125.7
This subclass is indented under subclass 124.3. Subject
matter wherein the additional specified material is a
compound which contains only (1) carbon, hydrogen and halogen
atoms, or (2) carbon and halogen atoms.
(1) Note. Examples of compounds provided for herein are
CCl[subscrpt]4[end subscrpt] and CHCl[subscrpt]3[end
subscrpt].
Subclass:
125.8
This subclass is indented under subclass 124.3. Subject
matter wherein the additional specified material is an
inorganic material having no bonds between hydrogen and
metal.
Subclass:
126
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal
compound which is in admixture with a silicon-containing
material, or wherein the transition metal compound
additionally contains at least one silicon atom therein.
(1) Note. Included herein are those processes that claim
the use of silica.
Subclass:
127
This subclass is indented under subclass 126. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom.
Subclass:
128
This subclass is indented under subclass 127. Subject matter
wherein the silicon-containing material is a nonmetallic
organic compound.
Subclass:
129
This subclass is indented under subclass 127. Subject matter
wherein the silicon-containing material is an inorganic
oxygen-containing compound, e.g., H[subscrpt]3[end
subscrpt]Si-O-SiH[subscrpt]3[end subscrpt], etc.
Subclass:
130
This subclass is indented under subclass 126. Subject matter
wherein a the silicon-containing material is an inorganic
oxygen-containing compound, e.g., SiO[subscrpt]2[end
subscrpt], H[subscrpt]3[end subscrpt]Si-O-SiH[subscrpt]3[end
subscrpt], etc.
Subclass:
131
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition-metal
compound which is in admixture with a boron-containing
material, or wherein the transition-metal compound,
additionally, contains at least one boron atom therein.
Subclass:
132
This subclass is indented under subclass 131. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom, e.g., transition-metal compound and
LiBH[subscrpt]4[end subscrpt], etc.
Subclass:
133
This subclass is indented under subclass 132. Subject matter
wherein the boron compound contains at least one halogen
atom, e.g., B[subscrpt]3[end subscrpt]N[subscrpt]3[end
subscrpt]H[subscrpt]3[end subscrpt]Cl[subscrpt]3[end
subscrpt] (trichloroborazole), etc.
Subclass:
134
This subclass is indented under subclass 131. Subject matter
wherein the boron compound contains a boron to hydrogen bond,
or a boron to carbon bond (e.g., Ti(BH[subscrpt]4[end
subscrpt])[subscrpt]3[end subscrpt], TiCl[subscrpt]4[end
subscrpt] and B(C[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt])[subscrpt]3[end subscrpt], etc.).
Subclass:
135
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal
compound in admixture with at least one nonmetal-containing
material having at least one atom of nitrogen, phosphorus,
oxygen, sulfur, selenium, tellurium, or halogen.
(1) Note. Nitrogen gas, per se, is not a basis for
classification herein. Such claims are classified elsewhere
on some other basis.
(2) Note. Patents which disclose air but do not
specifically claim air as a needed component of the
composition are excluded herefrom and will be classified
elsewhere on some other basis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 for a process of polymerizing in the presence of water
and a transition metal or transition metal compound.
Subclass:
136
This subclass is indented under subclass 135. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein a nontransition metal atom is directly bonded to a
carbon atom.
Subclass:
137
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is elemental halogen or is a
nonmetallic-inorganic-halogen-containing compound.
Subclass:
138
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is elemental oxygen or is a
nonmetallic inorganic-oxygen-containing compound.
Subclass:
139
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is an organic compound
containing at least one phosphorus atom.
Subclass:
140
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is an organic compound
containing at least one sulfur atom.
Subclass:
141
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is an organic compound
containing at least one nitrogen atom.
Subclass:
142
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is an organic compound
containing at least one oxygen atom.
Subclass:
143
This subclass is indented under subclass 142. Subject matter
wherein the nonmetal oxygen compound contains at least a
halogen atom in the same molecule as the oxygen atom.
Subclass:
144
This subclass is indented under subclass 136. Subject matter
wherein the nonmetal material is an organic compound
containing at least one halogen atom.
Subclass:
145
This subclass is indented under subclass 135. Subject matter
wherein the nonmetal material is elemental phosphorus or is a
phosphorus-containing compound.
Subclass:
146
This subclass is indented under subclass 135. Subject matter
wherein the nonmetal material is elemental sulfur or is a
sulfur-containing compound.
Subclass:
147
This subclass is indented under subclass 135. Subject matter
wherein the nonmetal material is a nitrogen-containing
compound.
Subclass:
148
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a transition metal
compound (1) in admixture with two or more diverse elemental
nontransition metals; or (2) in admixture with at least two
different nontransition metal hydride compounds; or (3) in
admixture with at least two different nontransition metals to
carbon-bonded compounds; or (4) in admixture with a
nontransition elemental metal and a nontransition metal
hydride compound or a nontransition metal-to-carbon-bonded
compound; or (5) is in admixture witha nontransition metal
hydride compoundand a nontransition metal-to-carbon-bonded
compound.
(1) Note. Different for purposes herein regards to the
compounds of a nontransition metal bonded to hydrogen or
carbon is meant to include the same nontransition metal
existing in different compounds, e.g., one being the hydride
and the other containing a nontransition metal to carbon
bonds, or even two different compounds of the same
nontransition metal each bonded to carbon, but in different
compounds, or in different hydride forms.
Subclass:
149
This subclass is indented under subclass 148. Subject matter
wherein the specified material contains an atom of a Group VA
(As, Sb, Bi)metal in elemental form, or contains a hydride of
a Group VA metal, or contains a compound of a Group VA metal
wherein the Group VA metal is directly bonded to a carbon
atom.
Subclass:
150
This subclass is indented under subclass 148. Subject matter
wherein the specified material contains an atom of a Group
IVA (Ge, Sn, Pb)metal in elemental form, or contains a
hydride of a Group IV metal, or contains a compound of a
Group IVA metal wherein the Group IVA metal atom is directly
bonded to a carbon atom.
Subclass:
151
This subclass is indented under subclass 148. Subject matter
wherein the specified material contains an atom of a Group
IIIA (Al, Ga, In, Tl) metal in elemental form, or contains a
hydride of a Group IIIA metal, or contains a compound of a
Group IIIA metal wherein the Group IIIA metal is directly
bonded to a carbon atom.
Subclass:
152
This subclass is indented under subclass 151. Subject matter
wherein in addition to the Group IIIA material the specified
material contains at least one Group IA element in elemental
form, or contains a hydride of a Group IA metal, or contains
a compound of a Group IA metal wherein the Group IA metal is
directly bonded to a carbon atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123.1 for a compound of a Group IA element wherein the Group
IA element is not bonded to any hydrogen or carbon atoms.
Subclass:
153
This subclass is indented under subclass 151. Subject matter
wherein the specified material contains (1) two or more Group
IIIA metals in elemental form, two or more Group IIIA metal
hydrides, or two or more compounds which contain a carbon to
Group IIIA metal bond; or (2) a mixture composed of at least
two of any of the Group IIIA materials noted in (1).
Subclass:
154
This subclass is indented under subclass 90. Subject matter
wherein (1) the specific material contains a transition metal
compound which is in admixture with a compound of aluminum,
which aluminium compound is other than the hydride or other
than a compound wherein an aluminum atom is directly bonded
to a carbon atom, or (2) wherein a transition
metal-containing compound additionally contains at least one
aluminum atom in the same molecule, which aluminum atom is
not directly bonded to a hydrogen or carbon atom.
Subclass:
155
This subclass is indented under subclass 154. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein the nontransition metal atom is directly bonded to a
carbon atom.
Subclass:
156
This subclass is indented under subclass 155. Subject matter
wherein the specified material contains an inorganic
oxygen-containing compound of aluminum.
Subclass:
157
This subclass is indented under subclass 155. Subject matter
wherein the specified material contains aluminum trihalide.
Subclass:
158
This subclass is indented under subclass 157. Subject matter
wherein the transition metal compound contains at least one
atom of a Group IVA metal (i.e., Ti, Zr, Hf).
Subclass:
159
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains a nontransition metal
in elemental form, or contains a hydride of a nontransition
metal, or contains a compound of a nontransition metal
wherein the nontransition metal atom is directly bonded to a
carbon atom (e.g., TiCl[subscrpt]4[end subscrpt] and
LiAlH[subscrpt]4[end subscrpt], etc.).
Subclass:
160
This subclass is indented under subclass 159. Subject matter
wherein a transition metal atom is bonded to a carbon atom
(e.g., Ti(CR[subscrpt]3[end subscrpt])[subscrpt]3[end
subscrpt], tetra lithium ferrocenyl, etc.).
Subclass:
161
This subclass is indented under subclass 159. Subject matter
wherein a transition metal compound contains at least one
atom of phosphorus, sulfur, or nitrogen, in the same molecule
as the transition metal atom (e.g., titanium nitride,
MoS[subscrpt]2[end subscrpt], ferric hydrosulfate, etc.).
Subclass:
162
This subclass is indented under subclass 159. Subject matter
wherein at least one carbon atom is directly bonded to a
nontransition metal atom and the molecule contains in
addition at least one ethylenic unsaturated moiety.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for the
definition of "ethylenically unsaturated".
Subclass:
163
This subclass is indented under subclass 159. Subject matter
wherein at least one nontransition metal is bonded to a
hydrogen or carbon atom and the same molecule contains in
addition at least one atom of phosphorus, nitrogen or sulfur;
e.g., AlH[subscrpt]3[end subscrpt].N(CH[subscrpt]3[end
subscrpt])[subscrpt]3[end subscrpt], H[subscrpt]2[end
subscrpt]Al.N(CH[subscrpt]3[end subscrpt])[subscrpt]2[end
subscrpt].
Subclass:
164
This subclass is indented under subclass 159. Subject matter
wherein the transition metal of the transition metal compound
is a Group IB, IIIB, or VIIB atom, or has an atomic number of
58-71, or 90 and higher.
Subclass:
165
This subclass is indented under subclass 159. Subject matter
wherein a nontransition metal compound which has at least one
nontransition metal to carbon contains (1) at least two atoms
of the same nontransition metal; or (2) at least two diverse
nontransition atoms, (e.g., Sb(C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]4[end
subscrpt]ClAl[subscrpt]2[end subscrpt](C[subscrpt]2[end
subscrpt]H[subscrpt]5[end subscrpt])[subscrpt]6[end
subscrpt], LiAlR[subscrpt]4[end subscrpt], etc.).
(1) Note. Included herein are those compounds that contains
a repeat unit (e.g., (CH[subscrpt]2[end
subscrpt]AlR)[subscrpt]n[end subscrpt], etc.).
Subclass:
166
This subclass is indented under subclass 159. Subject matter
wherein a group IVA or Group VA metal atom is directly bonded
to an atom of hydrogen or carbon.
Subclass:
167
This subclass is indented under subclass 159. Subject matter
wherein the nontransition metal atom exists in elemental
form.
Subclass:
168
This subclass is indented under subclass 159. Subject matter
wherein in addition to the nontransition metal compound there
is also present elemental carbon.
Subclass:
169
This subclass is indented under subclass 159. Subject matter
wherein the transition metal compound contains a Group VB,
VIB, or VIII metal atom.
Subclass:
169.1
Transition metal is Group VIII:
This subclass is indented under subclass 169. Subject matter
wherein the transition metal compound contains a Group VIII
metal atom.
Subclass:
169.2
Transition metal is vanadium:
This subclass is indented under subclass 169. Subject matter
wherein the transition metal compound contains a vanadium
atom.
Subclass:
169.3
At least one monomer is nonhydrocarbon material:
This subclass is indented under subclass 159. Subject matter
wherein at least one monomer is other than a hydrocarbon.
(1) Note. This subclass includes the interpolymerized
product of a hydrocarbon monomer and a nonhydrocarbon monomer
as well as homopolymeric products of nonhydrocarbon
monomers.
Subclass:
170
This subclass is indented under subclass 90. Subject matter
wherein the specified material contains at least one
transition metal atom bonded to a carbon atom.
Subclass:
171
This subclass is indented under subclass 170. Subject matter
wherein the transition metal is a Group VIII metal.
Subclass:
172
This subclass is indented under subclass 90. Subject matter
wherein the transition metal compound contains at least one
atom of phosphorus, sulfur, nitrogen, or oxygen chemically
combined therewith.
Subclass:
173
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains an elemental alkali
metal, and alkali metal hydride, or a compound containing an
alkali metal bonded to a carbon atom.
(1) Note. Alkali metal is limited to the elements of Group
IA and as such is limited to Li, Na, K, Rb, Cs, and Fr.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for processes of polymerizing in the
presence of a transition metal atom and a Group IA element or
compound thereof.
176 through 182, which may include compounds wherein the
alkali metal is bonded to a carbon or hydrogen atom and in
the same molecule there is also present at least one of the
necessary elements required under the definitions of these
subclasses.
Subclass:
174
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains two or more different
alkali metals in elemental or compound form and at least one
of the alkali metals is a free alkali metal, alkali metal
hydride, or a compound containing an alkali metal atom bonded
to a carbon atom.
(1) Note. Included herein are compounds which contain two
diverse alkali metals in a single compound or alloy.
Subclass:
175
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains (1) an elemental
alkali metal admixed with a compound of the same alkali
metal; or (2) wherein an alkali metal hydride or compound
containing an alkali metal-to-carbon bond is admixed with
another compound of the same alkali metal (e.g., Na and
sodium t-dodecyl mercaptide, or butyl lithium, and LiH,
etc.).
Subclass:
176
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains a heavy metal atom.
Subclass:
177
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains aluminum (e.g.,
LiAlH[subscrpt]4[end subscrpt], etc.).
Subclass:
178
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains boron or silicon
(e.g., LiBH[subscrpt]4[end subscrpt]. etc.).
Subclass:
179
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains phosphorus.
Subclass:
180
This subclass is indented under subclass 173. Subject matter
wherein the specified material contains a nitrogen-containing
compound.
Subclass:
181
This subclass is indented under subclass 173. Subject matter
wherein the specified additive contains oxygen.
(1) Note. This subclass includes only specified compositions
wherein there is a desired and intentional contact between
air and the Group IA material and does include the use of air
as a blanket or carrier gas.
Subclass:
182
This subclass is indented under subclass 173. Subject matter
wherein the specified additive contains a halogen atom.
Subclass:
183
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a metal atom bonded
to a carbon atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 for a polymerization process in the presence of a heavy
metal-containing organic compound wherein the metal is not
bonded to a carbon atom.
Subclass:
184
This subclass is indented under subclass 183. Subject matter
wherein the carbon to metal bonded compound is in admixture
with a compound that contains a -O-O- group or in admixture
with free oxygen.
(1) Note. This subclass includes only specified compositions
wherein there is a desired and intentional contact between
air and the compound having a carbon atom bonded to a metal
atom and does not include the use of air as a blanket or
carrier gas.
Subclass:
185
This subclass is indented under subclass 183. Subject matter
wherein the specified material contains a compound wherein an
atom of aluminum is bonded to a carbon atom.
Subclass:
186
This subclass is indented under subclass 185. Subject matter
wherein the specified material contains at least one atom of
aluminum not bonded to a carbon atom.
Subclass:
187
This subclass is indented under subclass 185. Subject matter
wherein the specified material contains a Group IA or Group
IIA metal atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 173+ for a specified material containing a Group
IA metal atom in elemental form, Group IA hydride, or
compound containing a Group IA metal bonded to a carbon
atom.
Subclass:
188
This subclass is indented under subclass 185. Subject matter
wherein the specified material contains a heavy metal atom.
Subclass:
189
This subclass is indented under subclass 185. Subject matter
wherein the specified material contains phosphorus, nitrogen,
sulfur, or oxygen.
(1) Note. Excluded from this area is the use of nitrogen or
air as carrier or blanket gases.
Subclass:
190
This subclass is indented under subclass 183. Subject matter
wherein the specified material contains a heavy metal atom
bonded to a carbon atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
188 for an admixture of an organoaluminum compound together
with an organo heavy metal compound.
Subclass:
191
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a metal in elemental
form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 108+ for a specified material containing an
elemental transition metal.
subclasses 173+ for an specified material containing an
elemental Group IA metal.
Subclass:
192
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least a heavy
metal atom as part of an organic compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a specified additive containing a
transition metal atom.
176 for a specified additive containing a heavy metal atom
and at least one atom of an elemental Group IA metal, hydride
thereof, or carbon atom bonded to a Group IA metal atom.
183 for a process of polymerizing in the presence of a metal
compound wherein a metal atom is directly bonded to a carbon
atom of an organic radical.
Subclass:
193
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least one atom of
phosphorus in an organic compound.
Subclass:
194
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains silicon, tellurium,
selenium, or a Group VIIIA atom.
(1) Note. This subclass includes use of clays and
diatomaceous earths as part of a specified material.
Subclass:
195
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a compound of boron
which boron compound is other than (1) boron trihalide, per
se; or (2) boron trihalide complexed with a nonmetal organic
moiety.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 237+ for a polymerization process in the
presence of boron trihalide, per se, or boron trihalide
complexed with a nonmetal organic moiety, e.g., boron
trihalide-etherate complex, etc.
Subclass:
196
This subclass is indented under subclass 195. Subject matter
wherein the boron compound contains at least one boron atom
bonded to a carbon or hydrogen atom.
Subclass:
197
This subclass is indented under subclass 196. Processes
wherein the boron compound is in admixture with free oxygen
or with a compound that contains an -O-O- group.
(1) Note. This subclass includes only specified compositions
wherein there is a desired and intentional contact between
air and the boron compound and does not include the use of
air as a blanket or carrier gas.
Subclass:
198
This subclass is indented under subclass 196. Subject matter
wherein the boron compound contains at least one atom of
phosphorus, sulfur, or nitrogen in the same molecule; or
wherein the boron compound is in admixture with an elemental
form of phosphorus or sulfur; or wherein the boron compound
is in admixture with a compound form of phosphorus, sulfur,
or nitrogen.
Subclass:
199
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a protein or a
protein-reaction product, e.g., gelatin, silk, etc.
(1) Note. A protein reaction product requires at the minimum
the presence of a peptide group, i.e., an amide group between
the amino radical of one amino acid and the carboxyl radical
of another amino acid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
215 for a polymerization process in the presence of a
nitrogen-containing carboxylic acid, salt, ester, or
anhydride thereof.
Subclass:
200
This subclass is indented under subclass 89. Processes
wherein the specified material contains a carbohydrate or
reaction product thereof, e.g., cellulose, starch, etc.
(1) Note. A carbohydrate "reaction product" requires that
the basic carbohydrate skeleton not be destroyed.
Subclass:
201
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least one distinct
normally solid preformed polymer which has been derived from
at least one ethylenically unsaturated material.
(1) Note. Polymers proper for this subclass must be either
distinct from the polymers formed either in the nature or
amounts of individual monomers therein, or in the manner in
which they are formed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102 for a process of polymerizing in the presence of a
transition metal-containing material and a preformed
ethylenic polymer.
204 for a process of polymerizing in the presence of a
melamine-formaldehyde reaction product.
208 for a process of polymerizing in the presence of a
urea-formaldehyde reaction product.
subclasses 213+ for a process of polymerizing in the
presence of a reaction product of a saturated carboxylic acid
and a polyhydric alcohol.
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclasses 50+, for
a process of polymerizing an ethylenically unsaturated
monomer in the presence of a solid preformed polymer wherein
the intent is to form a resinous composition containing the
previously formed polymer or wherein the preformed polymer
reacts with the ethylenic monomer to form a modified
previously formed solid polymer.
Subclass:
202
This subclass is indented under subclass 201. Subject matter
wherein the preformed normally solid polymer contains at
least one free hydroxyl group or nonheavy metal salt
thereof.
(1) Note. The preformed polymer intended primarily for this
subclass, but not limited thereto, is of the type that has
been formed by the hydrolysis or after-treatment of a
preformed polyvinyl acetate polymer and is known generally as
polyvinyl alcohol.
Subclass:
203
This subclass is indented under subclass 201. Subject matter
wherein the preformed normally solid polymer is derived from
at least one ethylenically unsaturated polycarboxylic acid.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative" which
discusses polycarboxylic acids.
Subclass:
204
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a compound which has
one or more carbon atoms covalently bonded in a closed ring
with at least one atom of oxygen, sulfur, or nitrogen and
which has no other atoms in the ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for a compound having selenium or tellurium atoms in a
heterocyclic ring.
Subclass:
205
This subclass is indented under subclass 204. Subject matter
wherein the ring containing compound has at least one atom of
sulfur and nitrogen in a single closed ring.
Subclass:
206
This subclass is indented under subclass 89. Subject matter
wherein (1) the polymerization reaction is conducted in the
presence of a halogenated hydrocarbon wherein at least one
halogen atom is not chlorine or (2) wherein the
polymerization is conducted in the presence of a halogenated
hydrocarbon and water.
(1) Note. A halogenated hydrocarbon is a compound (1) solely
composed of halogen and carbon atoms; or (2) of halogen,
carbon, and hydrogen atoms.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 352.2, appropriate subclasses therein, for a process of
polymerizing in the presence of a chlorinated hydrocarbon.
Subclass:
207
This subclass is indented under subclass 89. Subject matter
wherein the specified additive contains water and a compound
solely composed of carbon and hydrogen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 352.2, appropriate subclasses therein, for a process of
polymerizing in the presence of a hydrocarbon.
Subclass:
208
This subclass is indented under subclass 89. Subject matter
wherein the specified additive is a ketone or aldehyde.
(1) Note. Included herein as being proper for this subclass
are urea-formaldehyde reaction products.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the terms "aldehyde" and "ketone".
Subclass:
209
This subclass is indented under subclass 89. Subject matter
wherein the polymerization reaction is conducted in the
presence of at least one compound which contains at least one
oxygen atom bonded to two discrete organic radicals and
having the general formula, i.e., -C-O-C-.
(1) Note. This subclass includes ethers derived from
phenols.
(2) Note. This subclass does not include nonmetallic ether
complexes of a boron trihalide or of an aluminum trihalide.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 213+ for a polymerization process in the
presence of a carboxylic acid, R -0H, OR ester, salt or
anhydride thereof.
subclasses 237+ for a process of polymerizing in the
presence of an etherate complex of boron trihalide or
aluminum trihalide (e.g., BF[subscrpt]3[end subscrpt]
-etherate, etc.)
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "ether".
Subclass:
210
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a hydroxyl group
bonded to carbon or wherein the hydrogen atom of a hydroxyl
group has been replaced by a metal.
(1) Note. This subclass includes phenols.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 for polymerization in the presence of a compound wherein
the hydrogen atom of a hydroxyl group has been replaced by a
heavy metal.
subclasses 237+ for a process of polymerizing in the
presence of an alcohol or alcoholate complex of boron
trihalide or aluminum trihalide (e.g., BF[subscrpt]3[end
subscrpt]-alcoholate, etc.).
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "alcohol".
Subclass:
211
This subclass is indented under subclass 210. Subject matter
wherein the hydroxyl-containing compound contains at least
one atom of nitrogen or sulfur therein.
(1) Note. This subclass includes a sulfur or nitrogen salt
of an alcohol group.
Subclass:
212
This subclass is indented under subclass 210. Subject matter
wherein the hydroxy compound contains a single hydroxyl group
or salt thereof.
Subclass:
213
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least one compound
which has a carboxylic acid group, salt, ester, or anhydride
thereof.
(1) Note. This subclass includes oxalic acid, formic acid
and derivatives thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 for a polymerization process in the presence of a
compound wherein the hydrogen atom of a carboxylic acid group
has been replaced by a heavy metal atom.
subclasses 227+ for an organic per-acid.
subclasses 237+ for an organic complex or boron trihalide
or aluminum trihalide wherein the organic portion of the
complex is derived from a carboxylic acid.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative".
525, Synthetic Resins or Natural Rubbers, subclasses 1+, for
a resin composition containing a fat, fatty oil acid or salt
thereof as an additive, or for a fat, fatty oil, fatty oil
acid or salt thereof which is capable of reacting with or is
part of a resinous material.
Subclass:
214
This subclass is indented under subclass 213. Subject matter
wherein the specified material contains (1) a halogen or
sulfur substituted carboxylic acid; or (2) an ester, salt, or
anhydride of a sulfuror halogen substituted carboxylic acid.
Subclass:
215
This subclass is indented under subclass 213. Subject matter
wherein the specified material contains (1) a
nitrogen-containing carboxylic acid; or (2) an ester, salt or
anhydride of a nitrogen-containing carboxylic acid.
Subclass:
216
This subclass is indented under subclass 213. Subject matter
wherein the specified material contains a carboxylic acid
which is devoid of any aromatic or cycloaliphatic group, or
contains an ester, salt, or anhydride of a carboxylic acid
whch is devoid of any aromatic or cycloaliphatic group.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 204+ for a specified material containing a
heterocyclic compound having carboxylic acid group of for an
ester, salt, or anhydride derivative thereof.
Subclass:
217
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains an organic compound
having at least one nitrogen atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
199 for a polymerization process in the presence of a
polypeptide.
211 for a polymerization process in the presence of a
nitrogen-containing alcohol or alcoholate.
215 for a polymerization process in the presence of a
nitrogen-containing carboxylic acid, salt, ester, or
anhydride thereof.
Subclass:
218.1
Organic compound contains N=N or N-N group:
This subclass is indented under subclass 217. Subject matter
wherein the specified material contains at least two atoms of
nitrogen which are bonded to each other by a single or double
bond (e.g., 1, 1-dimethylhydrazine,
p-dimethylaminoazobenzene, etc.).
Subclass:
219
This subclass is indented under subclass 218.1. Subject
matter wherein the organic nitrogen containing compound
having the -N-N or N=N group has at least one atom of sulfur
or oxygen chemically bound therein.
Subclass:
219.1
Organic N=N or N-N Group-containing compound contains
carbocyclic group or element other than C, H, or N:
This subclass is indented under subclass 218.1. Subject
matter wherein the compound containing either the N=N or N-N
group also contains either a carbocyclic group, e.g.,
benzene, cyclopropyl or cyclohexyl group, etc. or an element
other than C, H, or N, e.g., the hydrochloride salt of 2,
2'-diguanyl-2, 2' -azopropane, etc.
Subclass:
219.2
N=N or N-N group-containing compound is a catalyst admixed
with at least one other catalyst, co-catalyst, or
accelerator, e.g., redox catalyst, etc.:
This subclass is indented under subclass 218.1. Subject
matter wherein the N=N or N-N group-containing compound is
part of a catalyst system, i.e., admixed with another
catalyst, co-catalyst or accelerator (e.g., 1,
1-dimethylhydrazine and hydrogen peroxide,
azobisisobutyronitrile and benzoyl peroxide, etc.).
(1) Note. Included herein also are those systems wherein a
monomer is first complexed with a catalyst and the complexed
monomer is copolymerized in the presence of a free radical
initiator with at least one other monomer, e.g., zinc
chloride-acrylonitrile complex copolymerized in the presence
of benzoylperoxide with 2-methyl-1-pentene, etc.
Subclass:
219.3
Contains specified ingredient other than the N=N or N-N
group-containing compound or water, or defined hydrocarbon or
defined halogenated hydrocarbon:
This subclass is indented under subclass 218.1. Subject
matter wherein the polymerization process uses a specified
material in addition to one containing an N=N or N-N group,
e.g., an admixture of azobisisobutyronitrile dissolved in
benzene or toluene, etc.
(1) Note. See the Class Definition, Lines With Other Classes
and Within This Class, section II. B, for a discussion of the
lines between this subclass and other subclasses in this
Ccass. A patent which recites a polymerization process which
utilizes (a) a material proper for subclasses 218.1+ in
combination with either a specified or nonspecified amount of
"hydrocarbon or halohydrocarbon" will not be classified in
subclass 219.3 or its indents, but will be found in 219.6 or
218.1+; proper, however, for subclass 219.3 or its indents is
the situation wherein when either the hydrocarbon or
halohydrocarbon is defined in some degree (e.g.,
dihalogenated, dibrominated, contains specified chain length,
boiling or freezing point range, etc.); (b) a "free radical"
catalyst with either a specified or nonspecified amount of
"hydrocarbon or halohydrocarbon" will be classified with the
polymer providing this was the only remaining basis for
classification.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
further elaboration on the limitations on the use of these
materials in this class.
Subclass:
219.4
Ingredient contains halogenated hydrocarbon:
This subclass is indented under subclass 219.3. Subject
matter wherein the polymerization process uses a halogenated
hydrocarbon in addition to the compound containing the N=N or
N-N group, e.g., azobisisobutyronitrile in admixture with
ethylene dichloride, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
219.3 for the limitations set out in using a halogenated
hydrocarbon.
(1) Note. See the Class Definition, Lines with Other Classes
and Within This Class, section II. B, for a discussion of
limitations regarding "halogen hydrocarbon" as a basis of
classification.
Subclass:
219.5
Ingredient contains water, e.g., an emulsion, dispersion,
etc.:
This subclass is indented under subclass 219.3. Subject
matter wherein the polymerization process uses water in
addition to the compound containing the N=Nor N-N group,
e.g., an aqueous emulsion polymerization process using
azobisisobutyronitrile catalyst, etc.
Subclass:
219.6
Azobisisobutyronitrile (AIBN):
This subclass is indented under subclass 218.1. Subject
matter wherein the compound which contains the N=N or N-N
group is azobisisobutyronitrile (AIBN)or the same compound
described in chemically equivalent terms, i.e., 2,
2-azobisisobutyronitrile, 2, 2-azobis(2-methylpropionitrile),
alpha, alpha - azodisobutyronitrile, dinitrile
azoisobutyrate, azodisobutyric acid nitrile, etc.
SEE OR SEARCH CLASS:
521, Synthetic Resins or Natural Rubbers, Glossary,
subclasses 50+ for a process of utilizing AIBN both to
polymerize a monomer as well as to foam the resulting
polymer.
Subclass:
220
This subclass is indented under subclass 217. Subject matter
wherein the nitrogen containing organic compound has at least
one atom of sulfur or oxygen chemically bound therein.
Subclass:
221
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains at least one compound
having a heavy metal atom therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a polymerization process in the presence
of a transition metal atom.
188 for a polymerization processs in the presence of an
organoaluminum compound which may also contain a heavy metal
therein, or in presence of a composition of an organoaluminum
compound and an elemental or compound form of a heavy metal.
190 for a polymerization process in the presence of a heavy
metal-organocarbon bond.
191 for a polymerization process in the presence of an
elemental heavy metal.
192 for a polymerization process in the presence of an
organic compound which contains a heavy metal therein.
Subclass:
222
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains an organic compound
having at least one sulfur atom therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
189 for an organoaluminum compound which may contain an atom
of sulfur.
198 for an organoboron-containing compound which may contain
an atom of sulfur.
211 for a sulfur-containing alcohol or alcoholate.
214 for a sulfur-containing carboxylic acid, salt, ester, or
anhydride thereof.
219 for an organic nitrogen-containing compound which has at
least one N-N or N=N group and which may have a sulfur atom
therein.
220 for an organic nitrogen compound which has at least one
atom of sulfur therein.
Subclass:
223
This subclass is indented under subclass 222. Subject matter
wherein the organic sulfur compound contains at least one
-S-S- or O-O group or chemically bound therewith.
Subclass:
224
This subclass is indented under subclass 222. Processes
wherein the organic sulfur-containing compound is a
mercapatan, i.e., -C-SH.
(1) Note. For purposes of this subclass, the carbon atom
bound to the -SH group cannot be double bonded to oxygen or
sulfur.
Subclass:
225
This subclass is indented under subclass 222. Subject matter
wherein the organic sulfur compound contains at least one
hexvalent sulfur atom (e.g., sulfonic acids, sulfonates,
organo sulfates, etc.).
Subclass:
226
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains a compound of
aluminum which aluminum compound is other than (1) aluminum
trihalide, per se; or (2) aluminum trihalide complexed with a
nonmetal organic moiety.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 237+ for a polymerization process in the
presence of aluminum trihalide, per se, or aluminum trihalide
complexed with a nonmetal organic moiety.
Subclass:
227
This subclass is indented under subclass 89. Subject matter
the specified material contains a compound having at least
one -O-O- group.
(1) Note. Processes wherein a known peroxide is formed in
situ by the reaction of a peroxide and another compound are
classified on the basis of the peroxide that is utilized to
form the in situ peroxide and cross-reference to the in situ
formed peroxide.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a transition metal compound admixed with
a peroxide compound or for a compound containing a transition
metal and an -O-O- group therein.
184 for an organometallic compound admixed with a peroxy
compound.
197 for a boron compound other than a boron trihalide or
nonmetallic organic complex, per se, admixed with a peroxy
compound.
223 for an organosulfur compound containing an -O-O- group
therein.
Subclass:
228
This subclass is indented under subclass 227. Subject matter
wherein the specified material contains two or more distinct
compounds having an -O-O- group therein.
Subclass:
229
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- group-containing compound is inorganic in
nature (e.g., sodium persulfate, percarbonates, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a transition metal peroxide.
195 for a polymerization reaction in the presence of sodium
perborate.
Subclass:
229.5
Nitrogen- or halogen-containing inorganic -O-O- compound free
of sulfur, or wherein an O-O- compound is in admixture with a
compound devoid of sulfur and containing a N, halogen or P
atom:
This subclass is indented under subclass 229. Subject matter
wherein the -O-O- group is part of a sulfur-free inorganic
nitrogen- or halogen-containing compound, or wherein an
inorganic compound containing the -O-O- group is in admixture
with a sulfur-free nitrogen, halogen, or phosphorus
compound.
Subclass:
230
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- group-containing compound contains an
R-O-O-H group.
Subclass:
230.5
Peroxy carbonate:
This subclass is indented under subclass 227. Subject matter
wherein the -OO group-containing compound contains a C-OC-O-
group or a -OO-O- group.
Subclass:
231
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- compound has at least one halogen atom
chemically combined therewith.
Subclass:
232
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- containing compound has at least one
aromatic group therein.
Subclass:
232.1
Benzoyl peroxide:
This subclass is indented under subclass 232. Subject matter
wherein the -O-O- group-containing compound is benzoyl
peroxide, i .e., [figure]
Subclass:
232.3
Two or more peroxy groups in same compound:
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- group-containing compound contains at least
two -O-O- groups.
Subclass:
232.5
Cycloaliphatic or ethylenically unsaturated peroxy-containing
compound:
This subclass is indented under subclass 227. Subject matter
wherein the -O-O- group-containing compound contains a carbon
ring which is other than an aryl, or contains an
ethylenically unsaturated group.
Subclass:
233
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains elemental phosphorus
or an inorganic compound containing phosphorus therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a transition metal-containing material
containing a phosphorus atom or admixed with a phosphorus
atom.
subclasses 179+ for an elemental alkali metal atom admixed
with a phosphorus-containing material, and for a Group IA
hydride or Group IA organometallic compound containing a
phosphorus.
subclasses 183+ for a phosphorus-containing organo metallic
material wherein the metal is other than a transition metal
or Group IA metal.
subclasses 193+ for a material containing an organic
phosphorus-containing compound.
Subclass:
234
This subclass is indented under subclass 89. Subject matter
wherein the specified material is elemental sulfur or an
inorganic compound containing sulfur therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 90+ for a transition metal material containing a
sulfur atom.
subclasses 183+ for a sulfur-containing organometallic
material wherein the metal is other than a transition metal
or Group IA metal.
Subclass:
235
This subclass is indented under subclass 89. Subject matter
wherein the specified additive contains oxygen, air, or
ozone.
(1) Note. This subclass does not include the use of air as a
blanket or carrier gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 227+ for a polymerization reaction in the
presence of an oxygen-liberating peroxide compound.
Subclass:
236
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains an inorganic nitrogen
compound.
Subclass:
237
This subclass is indented under subclass 89. Subject matter
wherein the specified material contains (1) elemental
halogen; or (2) a boron halide or nonmetallic organic complex
thereof; or (3) a hydrogen halide; or (4) an aluminum
trihalide or a nonmetallic organic complex thereof; or (5) a
compound containing only halogen atoms; or (6) a metallic
halide other than transition metal, aluminum or a
nontransition heavy metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 195+ for polymerizing in the presence of a boron
compound which is other than boron trihalide or a nonmetallic
organic complex thereof.
221 for polymerizing in the presence of a halide of a heavy
metal.
226 for polymerizing in the presence of an aluminum compound
which is other than aluminum trihalide or a nonmetallic
organic complex thereof.
Subclass:
238
This subclass is indented under subclass 237. Subject matter
wherein at least one monomer is other than a hydrocarbon.
(1) Note. This subclass includes the inter-polymerization
of a hydrocarbon monomer and a nonhydrocarbon monomer as well
as homopolymers of nonhydrocarbon monomers.
Subclass:
238.1
From protein or biologically active polypeptide containing
monomer:
This subclass is indented under subclass 72. Subject matter
wherein at least one ethylenic monomer has chemically bonded
thereto a protein or biologically active polypeptide, or
wherein said protein or biologically active polypeptide has
been modified so as to introduce ethylenic unsaturation.
SEE OR SEARCH CLASS:
435, Chemistry: Molecular Biology and Microbiology, for
processes of preparing and using enzymes.
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the terms "protein" and "biologically active
polypeptide"
527, Synthetic Resins or Natural Rubbers, subclasses 100+
and 200+ for solid polymers containing chemically reacted
protein material and wherein there is also at least one
nonethylenically unsaturated reactant.
Subclass:
238.2
From carbohydrates, tannin or derivative containing monomer:
This subclass is indented under subclass 72. Subject matter
wherein at least one ethylenic monomer has chemically bonded
thereto a carbohydrate or derivative, or tannin or
derivative; or wherein said carbohydrate or tannin or
derivative has been modified so as to introduce ethylenic
unsaturation therein.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of "carbohydrates" and "carbohydrate derivative".
560, Organic Compounds, subclass 68, the definition thereof
for a description of "tannins".
Subclass:
238.21
Cellulose or derivative containing monomer:
This subclass is indented under subclass 238.2. Subject
matter wherein the monomer contains cellulose or derivative.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, subclass 35 for a
definition of cellulose.
Subclass:
238.22
Starch or derivative containing monomer, e.g.,
starch-acrylamide, etc.:
This subclass is indented under subclass 238.2. Subject
matter wherein the monomer contains starch or a starch
material or derivative.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, subclass 47 for a
definition of starch or starch material (e.g., cereal or
starch flour, etc.) or derivative.
Subclass:
238.23
Mono- or di-saccharide containing monomer, e.g., allyl
sucrose, etc.:
This subclass is indented under subclass 238.2. Subject
matter wherein the carbohydrate is a mono- or di-saccharide
monomer.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, subclass 56 or a
definition of di-saccharide, and subclass 58 for a definition
of a mono-saccharide.
Subclass:
238.3
From natural resin or derivative containing monomer:
This subclass is indented under subclass 72. Subject matter
wherein at least one ethylenic monomer has chemically bonded
thereto a natural resin or derivative thereof; or wherein an
ethylenically unsaturated natural resin is copolymerized with
an additional ethylenic monomer.
(1) Note. Resin copolymerized with another ethylenic monomer
which is not a natural resin or natural resin derivative is
classified herein. Also, rosin copolymerized with another
ethylenic monomer which is a natural resin having
synthetically introduced ethylenic unsaturation is classified
herein.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Lines With Other
Classes and Within This Class, section II. B, for a further
elaboration of the subject matter relating to natural resin
or derivatives thereof.
527, Synthetic Resins or Natural Rubbers, subclasses 600+
for synthetic resins derived from natural resins proper for
that class.
530, Synthetic Resins or Natural Rubbers, subclasses 200+
for nonsolid polymeric or nonpolymeric) reaction products of
natural resins or derivatives with unsaturated terpenes
and/or unsaturated polycarboxylic acids, halides, or
anhydrides.
Subclass:
239
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one boron
atom.
Subclass:
240
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one metal
atom.
(1) Note. This subclass includes unsaturated compounds
wherein the metal atoms are convalently or ionically bound.
Subclass:
241
This subclass is indented under subclass 240. Subject matter
wherein at least one of the metal atoms is a transition
metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
90 for a clarification of the term "transition metal"
Subclass:
242
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one
fluorine atom.
Subclass:
243
Fluorine-containing monomer contains a sulfur atom:
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains at least one sulfur
atom.
Subclass:
244
Fluorine-containing monomer is a ketone or aldehyde:
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains an aldehyde or ketone
group.
(1) Note. A reactant having a =C=C=O group is a ketone.
Ketenes are regarded as ketones herein.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the terms "aldehyde" and "ketone".
Subclass:
245
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains a single carboxylic
acid ester group.
Subclass:
246
This subclass is indented under subclass 245. Subject matter
wherein the alcohol portion of the carboxylic ester moiety
contains at least one ether group, e.g., - -O - R - O - R,
etc.
(1) Note. This subclass includes ethers derived from
aromatic alcohols.
Subclass:
247
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains an ether oxygen atom
connecting two carbon atoms.
Subclass:
248
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains at least one nitrogen
atom.
Subclass:
249
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains at least one halogen
atom which is other than fluorine (e.g.,
trichlorofluoroethylene, etc.).
Subclass:
250
This subclass is indented under subclass 242. Subject matter
wherein the fluorine monomer contains (1) atoms only of
carbon, fluorine and hydrogen; or (2) atoms only of carbon
and fluorine.
Subclass:
251
This subclass is indented under subclass 250. Subject matter
wherein the fluorine monomer contains at least one aromatic
ring.
Subclass:
252
This subclass is indented under subclass 250. Subject matter
wherein the fluorine monomer contains at least two moieties
wherein a carbon atom is bonded to another carbon atom by a
double or triple bond.
Subclass:
253
This subclass is indented under subclass 250. Subject matter
wherein the fluorine monomer contains at least five fluorine
atoms.
Subclass:
254
This subclass is indented under subclass 253. Subject matter
wherein the fluorine monomer contains only atoms of carbon
and fluorine.
Subclass:
255
This subclass is indented under subclass 250. Subject matter
wherein the fluorine monomer contains at least two fluorine
atoms.
Subclass:
256
From monomer containing sulfur atom as part of a heterocyclic
ring:
This subclass is indented under subclass 72. Subject matter
wherein an unsaturated monomer contains one or more carbon
atoms covalently bonded in a ring system with at least one
hetero atom of oxygen, nitrogen, sulfur, selenium, or
tellurium and there are no other atoms in the ring, with the
proviso that at least one of the atoms in the ring is
sulfur.
Subclass:
257
Sulfur-containing ring contains additional hetero atom, i.e.,
N, O, Se, Te:
This subclass is indented under subclass 256. Subject matter
wherein at least one hetero ring contains as hetero atoms
therein at least one sulfur atom and at least one atom of
oxygen, nitrogen, selenium, or tellurium.
Subclass:
258
This subclass is indented under subclass 72. Subject matter
wherein an unsaturated monomer contains one or more carbon
atoms covalently bonded in a ring system with at least one
hetero atom or oxygen, nitrogen, selenium or tellurium and
there are no other atoms in the ring, with the proviso that
at least one of the hetero atoms is nitrogen.
Subclass:
259
This subclass is indented under subclass 258. Subject matter
wherein the monomer contains a fused or bridged ring system,
and wherein at least one atom thereof is nitrogen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 280+ for a monomer containing nitrogen atom
which is part of a bridged or fused ring compound and wherein
the nitrogen atom is extracyclic to the ring system and for a
more thorough definition of what is meant by a fused or
bridged ring system.
Subclass:
260
This subclass is indented under subclass 258. Subject matter
wherein the ring system contains five or six atoms and at
least one of the atoms besides carbon and nitrogen, is
oxygen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 275+ for a ring compound containing a
phosphorous atom in the ring.
Subclass:
261
This subclass is indented under subclass 258. Subject matter
wherein the ring system contains at least three nitrogen
atoms.
Subclass:
262
Imide monomer:
This subclass is indented under subclass 258. Subject matter
wherein at least one nitrogen heterocyclic ring contains an
imide group.
(1) Note. An imide for purposes of this subclass denotes a
heterocyclic ring, i.e., illustrated below, wherein n is 1 or
more and wherein x is 1 or more. [figure]
Subclass:
263
This subclass is indented under subclass 258. Subject matter
wherein the nitrogen atom of a ring system is bonded either
directly or indirectly to an extracyclic unsaturated group.
(1) Note. This subclass includes only directly bonded
unsaturated groups as in C= C-or only indirectly unsaturated
bonded groups as in CH[subscrpt]2[end subscrpt]=C - C - and
is not meant to include unsaturated groups which are bonded
to nonnitrogen ring atoms, e.g., [figure]
(2) Note. Extracyclic as used herein is meant to exclude
those compounds wherein the heterocyclic nitrogen compound
contains unsaturation solely in the ring. The extracyclic
unsaturation as required for this subclass can exist in a
ring compound which is bonded to the nitrogen atom of the
ring either directly or indirectly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 258+ for a nitrogen-containing heterocyclic
monomer wherein the ethylenic unsaturation is linked
indirectly to the nitrogen atom in a ring through other atoms
in the heterocyclic ring system.
Subclass:
264
This subclass is indented under subclass 263. Subject matter
wherein the nitrogen ring system contains only carbon atoms
and a single nitrogen atom in the ring and wherein said N
atom is bonded to a carbon atom in the ring which is doubly
bonded to an extracyclic oxygen atom ( N) and there are no
oxygen, sulfur, selenium, or tellurium atoms doubly bonded
directly to any other carbon atoms of the ring system, e.g.,
[figure]
Subclass:
265
This subclass is indented under subclass 258. Subject matter
wherein the nitrogen-containing ring contains six atoms and
wherein only one of the atoms is nitrogen.
Subclass:
266
This subclass is indented under subclass 72. Subject matter
wherein an unsaturated monomer contains at least one or more
carbon atoms covalently bonded in a ring system with at least
one hetero atom of oxygen, selenium or tellurium and there
are no other atoms in the ring, with the proviso that at
least one of the hetero atoms is oxygen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
260 for a 5- or 6-membered heterocyclic ring containing at
least one atom of oxygen and nitrogen therein.
275 for a ring compound containing a phosphorus atom in the
ring.
Subclass:
267
This subclass is indented under subclass 266. Subject matter
wherein the interpolymer is formed from at least two
monomers, one of said monomers being a coumarone type
material and the other monomer is of the indene type.
(1) Note. The polymers herein need not contain coumarone,
per se, and indene, per se. It is sufficient for this
subclass if derivatives of these compounds are polymerized.
Derivatives are considered as being those products wherein
the hydrogen atoms of these compounds have been replaced by
other functional groups.
(2) Note. Patents herein generally apply to those resins
that are obtained by polymerizing mixtures of material
containing coumarone and indene which have been obtained in
coal-tar refining.
Subclass:
268
This subclass is indented under subclass 266. Subject matter
wherein a bridged or fused ring monomer contains an oxygen
atom adjoining two carbons in the same bridged or fused ring
system, with the proviso that the adjoined carbon atoms are
not double bonded to oxygen, selenium, or tellurium, e.g.,
[figure] [figure] [caption]etc.
(1) Note. A bridged or fused ring system for purposes of
this subclass requires that a ring system be attached at two
different carbon atoms of its nuclear skeleton to an atom or
chain of atoms which when taken together with the nuclear
carbon atoms forms an additional ring structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
273 for an unsaturated compound containing an epoxy group.
Subclass:
269
Hetero-oxygen ring compound contains a Carbonate group, i.e.,
-OO- as ring atoms:
This subclass is indented under subclass 266. Subject matter
wherein the unsaturated monomer has at least one heterocyclic
ring which contains as ring atoms thereof a -OO- group (i.e.,
cyclic carbonate).
Subclass:
270
This subclass is indented under subclass 266. Subject matter
wherein an unsaturated monomer contains at least one hetero
oxygen in a hetero ring containing five atoms.
Subclass:
271
This subclass is indented under subclass 270. Subject matter
wherein the 5-membered ring contains two carbonyl groups
bonded to the same oxygen atom so as to form a hetero ring
with the bonded oxygen atom, e.g., [figure] [caption]etc.
Subclass:
272
This subclass is indented under subclass 271. Subject matter
wherein the 5-membered oxygen-containing ring is
interpolymerized with at least one unsaturated monomer which
is solely composed of hydrogen and carbon atoms.
(1) Note. This subclass includes interpolymers and other
interpolymers wherein other unsaturated monomers, in addition
to a hydrocarbon monomer, are polymerized with the
unsaturated heterocyclic oxygen-containing compound.
Subclass:
273
This subclass is indented under subclass 266. Subject matter
wherein the unsaturated monomer contains at least one hetero
oxygen atom in a ring containing three atoms.
Subclass:
274
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one
phosphorus atom.
Subclass:
275
This subclass is indented under subclass 274. Subject matter
wherein the phosphorus atom is part of a ring system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 258+ for an unsaturated monomer containing a
nitrogen atom in a heterocyclic ring.
subclasses 266+ for an unsaturated monomer containing an
oxygen atom in a heterocyclic ring.
Subclass:
276
This subclass is indented under subclass 274. Subject matter
wherein the phosphorus atom is covalently bonded to a
nitrogen atom.
Subclass:
277
This subclass is indented under subclass 274. Subject matter
wherein a phosphorus atom has a valence of five.
Subclass:
278
This subclass is indented under subclass 277. Subject matter
wherein a pentavalent phosphorus atom is directly bound to a
carbon atom.
Subclass:
279
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one silicon
atom.
Subclass:
280
This subclass is indented under subclass 72. Subject matter
wherein a single carboxyclic ring is attached at two
different carbon atoms of its nuclear skeleton to a methylene
carbon atom, or substituted methylene group, or chain of
methylene carbon atoms, or substituted methylene carbon
atoms, which carbon atom or chain of carbon atoms when taken
together with the attached nuclear carbon atoms of the
carbocyclic ring forms an additional ring structure (e.g.,
polycyclic terpenes, etc.).
(1) Note. A bridged monomer for purposes of this subclass
requires that two separate and discrete methylene groups, or
substituted methylene groups, or chain of methylene carbon
atoms, or substituted methylene carbon atoms be present in a
molecule, one of said methylene groups or chain thereof being
those nuclear carbon atoms between the two different attached
carbon atoms of the original nuclear carbon atoms of the
carbocyclic ring, and the second methylene group or chain
thereof being those carbon atoms that are joined to the
original nuclear carbon atoms of the carbocyclic ring so as
to form the additional ring structure.
(2) Note. A fused ring monomer for purposes of this subclass
requires a carbocyclic nucleus which is attached at two of
its adjacent nuclear carbon atoms to a methylene group, or
substituted methylene group, or to a chain of methylene
carbon atoms, or a chain of substituted methylene carbon
atoms, so that the adjoined carbon atoms form a carbocyclic
ring which is in addition to the original carbocyclic ring.
Subclass:
281
This subclass is indented under subclass 280. Subject matter
wherein the unsaturated monomer contains at least one bridged
ring system.
Subclass:
282
This subclass is indented under subclass 281. Subject matter
wherein the bridged ring system contains at least one
ethylenic group which is directly or indirectly bonded to a
single carbon atom of the bridged ring nucleus.
(1) Note. For purposes of this subclass "directly or
indirectly bonded " is meant to include all ethylenic
unsaturation which is external to the bridged nucleus and
which is bonded to the bridged nucleus by a single nuclear
carbon atom, e.g., [figure] [caption]etc.
(2) Note. For purposes of this subclass, a methylene group
which is bonded to a nuclear carbon atom will suffice as
being an external ethylenic group, and is proper for this
subclass, e.g., [figure] [caption]etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 281+ for an ethylenic unsaturated group which is
bonded to the bridged ring system through a ring which is
fused to the bridged ring system, e.g., [figure]
[caption]etc.
Subclass:
283
This subclass is indented under subclass 281. Subject matter
wherein the bridged ring monomer is a dicyclopentadiene
containing moiety.
(1) Note. This subclass includes dicyclopentadiene, per se,
as well as derivatives of dicyclopentadiene having at least
the basic structure of dicyclopentadiene, shown below,
available ethylenic bonds but wherein the hydrogen atoms of
dicyclopentadiene may have been substituted by other atoms.
[figure]
Subclass:
284
This subclass is indented under subclass 280. Subject matter
wherein the fused ring system contains at least one ethylenic
group to which is directly bonded to a single carbon atom of
the fused ring nucleus.
(1) Note. For purposes of this subclass, "directly or
indirectly bonded" includes all ethylenic unsaturation which
is external to the fused ring nucleus and which is bonded to
the fused ring by a single nuclear carbon atom.
(2) Note. For purposes of this subclass a methylene group
which is bonded to a nuclear carbon atom will suffice as
being an external ethylenic group.
Subclass:
285
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one triple
bond (i.e., -CC-).
Subclass:
286
From S-containing monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one sulfur
atom.
Subclass:
287
From monomer containing three or more oxygen atoms bonded to
a single sulfur atom, e.g., sulfonate, etc.:
This subclass is indented under subclass 286. Subject matter
wherein the sulfur monomer contains at least one sulfur atom
bonded to at least three oxygen atoms.
Subclass:
288
From sulfur monomer containing nitrogen atom:
This subclass is indented under subclass 286. Subject matter
wherein the sulfur monomer contains at least one nitrogen
atom.
Subclass:
289
From sulfide-containing monomer:
This subclass is indented under subclass 286. Subject matter
wherein the sulfur monomer contains at least one sulfur atom
as part of a sulfide group.
(1) Note. A sulfide for purposes of this subclass denotes a
class of compounds having a (S)[subscrpt]n[end subscrpt]
group, wherein n is 1 or more and wherein the carbon atoms
bonded to the (S)[subscrpt]n[end subscrpt] atoms are not
double-bonded to oxygen, sulfur, selenium, or tellurium, or
triple-bonded to nitrogen.
Subclass:
290
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is a mixture of hydrocarbons
derived from a petroleum hydrocarbon fraction; or the
unsaturated monomer is an unsaturated coal, bituminous
material, extract or derivative thereof; or the unsaturated
monomer is an unsaturated fatty still residue; or mixtures of
said unsaturated monomers.
(1) Note. This subclass includes polymers wherein added
material is interpolymerized with a petroleum hydrocarbon
fraction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 for the combination of preparing a monomer by a chemical
reaction involving a petroleum fraction and subsequent
polymerization of said monomer.
267 for an interpolymer containing coumarone and indene.
subclasses 280+ for a polymer prepared from a fused or
bridged ring ethylenic unsaturated monomer.
Subclass:
291
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one halogen
atom and at least three carbon atoms.
SEE OR SEARCH THIS CLASS, SUBCLASS:
296 for an iodine or bromine-containing monomer, 1,
2-dichloroethylene, trichloroethylene, or tetrachloroethylene
monomer.
343 for a polymer derived from vinylidene chloride.
subclasses 344+ for a polymer derived from vinyl chloride.
Subclass:
292.1
Halogen monomer is carboxylic acid ester:
This subclass is indented under subclass 291. Subject matter
wherein the halogen-containing monomer also contains a
carboxylic acid ester group.
SEE OR SEARCH THIS CLASS, SUBCLASS:
291 and 293 through 295, for a halogen- containing monomer
which also contains a carbonate group.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, under
"carboxylic acid or derivative", see definition of
"carboxylic acid ester".
Subclass:
292.2
Contains nitrogen:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer also contains
a nitrogen atom.
Subclass:
292.3
Contains oxygen other than as part of a carboxylic acid ester
group:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer also contains
an oxygen atom other than as part of a carboxylic acid ester
group.
(1) Note. This subclass excludes halogenated carbonate
monomers, per se; however, a halogen-containing monomer which
contains a carboxylic acid ester moiety and a carbonate
moiety would be included herein; as would a
halogen-containing monomer which contains a carboxylic acid
ester moiety and a free carboxylic acid moiety.
SEE OR SEARCH THIS CLASS, SUBCLASS:
291 293 through 295, for a halogen-containing monomer which
also contains a carbonate group.
Subclass:
292.4
Contains two or more carboxylic acid ester groups:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer contains at
least two carboxylic acid ester group.
Subclass:
292.5
Contains carbocyclic ring, e.g., aryl, etc.:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer contains a
ring consisting solely of carbon atoms.
Subclass:
292.6
Interpolymerized with a monomer containing atom other than
carbon, hydrogen, or halogen:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer is
interpolymerized with an ethylenic monomer containing an atom
other than carbon, hydrogen, or halogen.
Subclass:
292.7
Interpolymerized:
This subclass is indented under subclass 292.1. Subject
matter wherein said halogen-containing monomer is
interpolymerized with another ethylenic monomer.
Subclass:
292.8
Halogen monomer is nitrile:
This subclass is indented under subclass 291. Subject matter
wherein the halogen-containing monomer contains a nitrile
group.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, under
"carboxylic acid or derivative", see a definition of the term
"nitrile".
Subclass:
292.9
Halogen monomer contains an ether group:
This subclass is indented under subclass 291. Subject matter
wherein the halogen-containing monomer contains an ether
group, -C-O-C.
Subclass:
292.95
Halogen monomer contains a carboxylic acid, salt, or
carboxylic acid amide:
This subclass is indented under subclass 291. Subject matter
wherein said halogen-containing monomer contains a free
carboxylic acid, salt, or carboxylic acid amide group.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, under
"carboxylic acid or derivative", see definitions of
"carboxylic acid", "salt of a carboxylic acid", and
"carboxylic acid amide".
Subclass:
293
This subclass is indented under subclass 291. Subject matter
wherein the halogen-containing monomer contains at least one
aromatic group therein.
Subclass:
294
This subclass is indented under subclass 291. Subject matter
wherein the halogen-containing monomer contains at least two
halogen atoms therein.
(1) Note. The halogen atoms herein may be identical or
different.
Subclass:
295
This subclass is indented under subclass 291. Subject matter
wherein the unsaturated monomer contains at least two
separate ethylenic groups (e.g., halogenated butadiene,
etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
249 for a polymer derived from a plural halogenated monomer
containing at least one fluorine atom and at least one
halogen atom which is other than fluorine.
Subclass:
296
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one atom of
bromine or iodine or is 1, 2-dichloroethylene,
trichloroethylene, or tetrachloroethylene.
Subclass:
297
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a nitrile group
(i.e., R-CN)and wherein said nitrile compound is other than
acrylonitrile, per se, or methacrylonitrile, per se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
248 for a polymer derived from a monomer containing a
fluorine atom and a nitrogen atom.
292.8 for a polymer derived from a monomer containing a
nitrile group and a chlorine, iodine, or bromine atom.
subclasses 341+ for a polymer derived from acrylonitrile or
methacrylonitrile.
Subclass:
298
This subclass is indented under subclass 297. Subject matter
wherein (1) the monomer contains at least two nitrogen atoms,
one of said nitrogen atoms being part of a nitrile group, and
the other nitrogen atom being in a nonnitrile form; or (2)
the nitrile-containing monomer contains an oxygen atom
chemically combined therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for a polymer derived from a monomer containing plural
nitrile groups and no other nonnitrile nitrogen atom or no
oxygen atom.
Subclass:
299
This subclass is indented under subclass 297. Subject matter
wherein the nitrile group-containing monomer has at least one
aromatic group.
Subclass:
300
This subclass is indented under subclass 297. Subject matter
wherein the monomer contains at least two nitrile groups,
e.g., vinylidene cyanide, etc.
Subclass:
301
From monomer containing a NO- group, e.g., carbamic acid,
etc.:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a NO- group (e.g.,
carbamates, etc.).
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclasses 367+
for a polymer derived from a reactant which contains a N
group.
Subclass:
302
From monomer containing a NN or NN group, e.g., urea,
isourea, etc.:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a NN group or N
group, e.g., unsaturated ureas, etc.
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclasses 367+
for a polymer derived from a reactant which contains a -
group.
Subclass:
303.1
From carboxylic acid amide-containing monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one
carboxylic acid amide group, i.e.,-CN or HN.
SEE OR SEARCH CLASS:
524, Synthetic Resins or Natural Rubbers, subclass 29.1 for
a resin of the type found in this subclass but described as a
composition (e.g., solution, dispersion, gel, emulsion,
latex, etc.).
Subclass:
304
This subclass is indented under subclass 303.1. Subject
matter wherein the amide monomer contains at least one carbon
atom bonded to at least one oxygen atom and wherein said
carbon to oxygen bond is not part of an amide group.
(1) Note. Patents included within this subclass include
those wherein two or more carbonyl groups are bonded to a
nitrogen atom so as to form an imide group, e.g., [figure]
[caption]etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
306 for a polymer formed from a monomer containing plural
amide groups and having no carbon-to-oxygen bond other than
as an amide.
Subclass:
305
This subclass is indented under subclass 303.1. Subject
matter wherein the amide monomer contains a cycloaliphatic or
aromatic group.
Subclass:
306
This subclass is indented under subclass 303.1. Subject
matter wherein the amide monomer contains at least two
separate amide groups, e.g., [figure]
Subclass:
307
This subclass is indented under subclass 303.1. Subject
matter wherein the amide monomer contains at least one
additional nonamide group nitrogen atom.
Subclass:
307.1
N-substituted unsaturated hydrocarbon group:
This subclass is indented under subclass 303.1. Subject
matter wherein the carboxylic acid amide contains a
N-substituted unsaturated hydrocarbon group (e.g., N-vinyl
acetamide, N-allyl propionamide, etc.).
Subclass:
307.2
With monomer containing carboxylic acid amide group:
This subclass is indented under subclass 303.1. Subject
matter wherein the copolymer contains at least two carboxylic
acid amide monomers (e.g., polymer from acrylamide and N,
N-dimethylacryiamide, etc.).
Subclass:
307.3
With monomer containing nitrogen other than
(meth)-acrylonitrile:
This subclass is indented under subclass 303.1. Subject
matter wherein the copolymer is derived from a
nitrogen-containing monomer other than (meth)acrylonitrile or
a carboxylic acid amide (e.g., polymer from acrylamide and
diethylaminoethy methacrylate, etc.).
Subclass:
307.4
With monomer containing oxygen:
This subclass is indented under subclass 303.1. Subject
matter wherein the copolymer is derived from a comonomer
containing oxygen (e.g., polymer from acrylamide and vinyl
acetate, etc.).
Subclass:
307.5
Oxygen atom is part of ether or hydroxyl group:
This subclass is indented under subclass 307.4. Subject
matter wherein the copolymer is derived from a comonomer
containing an ether or hydroxyl group (e.g., polymer from N,
N-dimethylacrylamide and methyl vinyl ether; acrylamide and
allyl alcohol, etc.).
Subclass:
307.6
Oxygen atom is part of carboxylic acid group:
This subclass is indented under subclass 307.4. Subject
matter wherein the copolymer is derived from a comonomer
containing a caroxylic acid group (e.g., polymer from
acrylamide and acrylic acid, etc.).
Subclass:
307.7
Oxygen atom is part of ester group derived from unsaturated
carboxylic acid:
This subclass is indented under subclass 307.4. Subject
matter wherein the copolymer is derived from a monomer
containing an ester group derived from a comonomer containing
an ester group derived from an unsaturated carboxylic acid
(e.g., a polymer from N-N-ditertiary butylacrylamide and
methyl acrylate, etc.).
Subclass:
307.8
With hydrocarbon monomer:
This subclass is indented under subclass 303.1. Subject
matter wherein the copolymer is derived from a hydrocarbon
comonomer (e.g., polymer from acrylamide and ethylene,
etc.).
Subclass:
308
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a ring solely
composed of carbon atoms, said ring of carbon atoms being
nonaromatic.
(1) Note. The ethylenic unsaturation may be part of the ring
system or may be external to the ring system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 280+ for a fused or bridged ring containing
monomer.
Subclass:
309
This subclass is indented under subclass 308. Subject matter
wherein the ring-containing monomer contains at least one
atom which is other than carbon and hydrogen.
Subclass:
310
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one
nitrogen atom and is other than acrylonitrile or
methacrylonitrile, per se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 341+ for a polymer derived from acrylonitrile or
methacrylonitrile.
Subclass:
311
This subclass is indented under subclass 310. Subject matter
wherein the nitrogen monomer contains at least one bond
between a nitrogen and an oxygen atom.
Subclass:
312
This subclass is indented under subclass 310. Subject matter
wherein the nitrogen monomer contains at least one bond
between a carbon and an oxygen atom.
Subclass:
313
From phenol, phenol ether, or inorganic phenolate monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is a phenol, phenol ether, or
inorganic salt of a phenol.
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclass 86, the
Notes thereof, for a definition of the terms "phenol", phenol
ether", and "an inorganic salt of a phenol (phenolate)".
Subclass:
314
From monomer containing a carbonate group, i.e., -OO-:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a -OO- group, i.e.,
carbonates.
SEE OR SEARCH CLASS:
528, Synthetic Resins or Natural Rubbers, subclasses 370+
for a polymer derived from a -OO- containing reactant.
Subclass:
315
From aldehyde monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains an aldehyde group.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "aldehyde".
Subclass:
316
From ketone or ketone monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains a ketone or ketone
group.
(1) Note. A ketene requires a compound having the structure
=C=O. Ketenes are considered as ketones herein.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "ketone".
Subclass:
317.1
Form carboxylic acid monomer:
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer contains at least one free
carboxyl group, i.e., OH.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 240+ for a polymer derived from an unsaturated
carboxylic acid metal salt.
292.1 for a halogen-containing carboxylic acid, salt or
ester thereof.
subclasses 310+ for a nitrogen-containing salt of an
unsaturated carboxylic acid.
subclasses 319+ for a polymer having carboxylic ester
groups but devoid of a free carboxylic acid group.
930 through 940, for cross-reference art collections
pertaining to the subject matter of this subclass and its
indents.
SEE OR SEARCH CLASS:
525, Synthetic Resins or Natural Rubbers, subclass 329.1 for
polyacrylic acid produced by oxidation of acrylonitrille and
in appropriate subclasses 337-388 for the process oxidation
of acryionitrile; methacrylic acid produced by hydrolysis of
polyalphahydroxy methacrylic acid ester.
Subclass:
318
Block copolymer derived from vinyl(idene) chloride:
This subclass is indented under subclass 317.1. Subject
matter wherein the polymer is a block copolymer derived from
vinyl chloride or vinylidene chloride.
(1) Note. To be proper for this subclass, the initial block
copolymer must be derived from vinyl or vinylidene chloride.
Subclass:
318.1
Carboxylic acid contains aryl group, or two or more ethylenic
groups:
This subclass is indented under subclass 317.1. Subject
matter wherein the carboxylic acid monomer contains an aryl
group or two or more ethylenic groups (e.g., cinnamic acid or
sorbic acid, etc.).
Subclass:
318.2
Carboxylic acid contains two or more carboxyl groups:
This subclass is indented under subclass 317.1. Subject
matter wherein the carboxylic acid monomer contains two or
more free carboxyl groups (e.g., maleic acid, fumaric acid,
etc.).
Subclass:
318.25
With hydrocarbon, vinyl chloride or vinylindene chloride
monomer:
This subclass is indented under subclass 318.2. Subject
matter wherein the monomer having two or more carboxyl groups
is interpolyerized with an unsaturated hydrocarbon, vinyl
chloride or vinylidene chloride or mixtures thereof.
Subclass:
318.3
Carboxlyic acid other than acrylic or methacrylic acid:
This subclass is indented under subclass 317.1. Subject
matter wherein the carboxylic acid monomer is other than
acrylic or methacrylic acid.
Subclass:
318.4
With hydrocarbon, vinyl chloride or vinylidene chloride
monomer:
This subclass is indented under subclass 318.2. Subject
matter wherein the monomer having two or more carboxyl groups
is interpolymerized with an unsaturated monomer which
contains at least one carboxylic acid ester group.
Subclass:
318.41
Monomer contains chalcogen other than as C(=O)-O- (chalocogen
in any monomer):
This subclass is indented under subclass 318.4. Subject
matter wherein at least one monomer contains chalcogen other
than C(=O)-O-.
(1) Note. The chalcogen can be with either the ester
monomer or another monomer.
Subclass:
318.42
Hydroxyl group:
This subclass is indented under subclass 318.4. Subject
matter wherein the chalcogen is a hydroxyl group.
Subclass:
318.43
Monomer contains two or more ester groups:
This subclass is indented under subclass 318.4. Subject
matter wherein the carboxylic acid monomer contains two more
ester groups.
Subclass:
318.44
Two or more ester monomers:
This subclass is indented under subclass 318.4. Subject
matter wherein the carboxylic acid monomer is
interpolymerized with two or more carboxylic acid ester
monomers.
Subclass:
318.45
With hydrocarbon monomer:
This subclass is indented under subclass 318.4. Subject
matter wherein the carboxylic acid monomer is
interpolymerized with an unsaturated carboxylic acid ester
monomer and an unsaturated hydrocarbon monomer.
Subclass:
318.5
With chalocogen containing monomer, e.g., additional carboxyl
monomer, etc.:
This subclass is indented under subclass 317.1. Subject
matter wherein the carboxylic acid monomer is
interpolymerized with an additional carboxylic acid monomer,
etc.
Subclass:
318.6
With hydrocarbon monomer:
This subclass is indented under subclass 317.1. Subject
matter wherein the carboxylic acid monomer is
interpolymerized with an unsaturated hydrocarbon monomer.
Subclass:
319
This subclass is indented under subclass 72. Subject matter
wherein an unsaturated monomer contains at least one
carboxylic acid ester group.
(1) Note. This subclass does not require that an ester be
prepared from the reaction of an acid and an alcohol. It is
sufficient if the ester compound be identical in structure to
a compound prepared by the replacement of a hydroxyl group by
a carboxylic acid radical. Each carboxylic acid ester, no
matter how prepared, is to be regarded as being the reaction
product of a carboxylic acid and a replaceable hydroxyl
group.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, Glossary, for a
definition of the term "carboxylic acid or derivative" which
includes a definition of "carboxylic acid ester".
Subclass:
320
This subclass is indented under subclass 319. Subject matter
wherein in addition to the carboxylic acid ester group there
is also present in the molecule at least one ether or alcohol
group.
Subclass:
321
This subclass is indented under subclass 319. Subject matter
wherein the ester is derived from at least one carboxylic
acid which contains plural carboxylic acid groups.
Subclass:
322
This subclass is indented under subclass 321. Subject matter
wherein at least one of the alcohol moieties of the ester
compound is ethylenically unsaturated (e.g., diallyl
phthalate, etc.).
Subclass:
323
This subclass is indented under subclass 322. Subject matter
wherein the plural carboxylic acid group compound contains
ethylenic unsaturation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
327 for an ester of a monocarboxylic acid wherein both the
carboxylic acid and the esterifying alcohol are ethylenically
unsaturated.
Subclass:
323.1
Diester derived from an ethylenically unsaturated
monocarboxylic acid and polyol:
This subclass is indented under subclass 321. Subject matter
wherein a diester derived from an ethylenically unsaturated
monocarboxylic acid and a polyol is polymerized.
SEE OR SEARCH THIS CLASS, SUBCLASS:
327 for an ester derived from an ethylenically unsaturated
carboxylic and an ethylenically unsaturated alcohol.
328 for an ester derived from an ethylenically unsaturated
carboxylic acid.
Subclass:
323.2
With additional monomer:
This subclass is indented under subclass 323.1. Subject
matter wherein the diester is interpolymerized with at least
one monomer which is ethylenically unsaturated.
Subclass:
324
This subclass is indented under subclass 321. Subject matter
wherein a polycarboxylic acid ester is interpolymerized with
at least one monomer which is a diverse ethylenically
unsaturated hydrocarbon.
Subclass:
325
This subclass is indented under subclass 321. Subject matter
wherein a polycarboxylic acid ester is interpolymerized with
at least one monomer which is a diverse ethylenically
unsaturated carboxylic acid ester.
Subclass:
326
This subclass is indented under subclass 319. Subject matter
wherein the unsaturated ester contains at least one aromatic
ring.
Subclass:
327
This subclass is indented under subclass 319. Subject matter
wherein the ester contains ethylenic unsaturation in the
carboxylic acid group as well as in the alcohol group.
Subclass:
328
This subclass is indented under subclass 319. Subject matter
wherein the ester is derived from a saturated alcohol and an
unsaturated carboxylic acid.
Subclass:
328.5
With additional monomer:
This subclass is indented under subclass 328. Subject matter
wherein the unsaturated carboxylic acid ester monomer is
interpolymerized with at least one monomer which is
ethylenically unsaturated.
Subclass:
329
This subclass is indented under subclass 328.5. Subject
matter wherein the unsaturated carboxylic acid ester monomer
is interpolymerized with at least one monomer which is an
ethylenically unsaturated hydrocarbon.
Subclass:
329.1
Hydrocarbon monomer containing at least two ethylenic groups,
e.g., butadiene, etc.:
This subclass is indented under subclass 329. Subject matter
wherein the hydrocarbon monomer contains at least two
ethylenic groups.
Subclass:
329.2
Aromatic, e.g., styrene, etc.:
This subclass is indented under subclass 329. Subject matter
wherein the hydrocarbon monomer contains an aryl ring.
Subclass:
329.3
With acrylonitrile or methacrylonitrile:
This subclass is indented under subclass 328.5. Subject
matter wherein acrylonitrile or methacrylonitrile is
interpolymerized with an ester derived from an ethylenically
unsaturated carboxylic acid.
Subclass:
329.4
With halogen-containing monomer:
This subclass is indented under subclass 328.5. Subject
matter wherein an ethylenically unsaturated
halogen-containing monomer is interpolymerized with an ester
derived from an ethylenically unsaturated carboxylic acid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 291+ for an unsaturated monomer containing at
least one halogen atom and at least three carbon atoms.
Subclass:
329.5
With ester derived from saturated carboxylic acid:
This subclass is indented under subclass 328.5. Subject
matter wherein an ethylenically unsaturated ester derived
from a saturated carboxylic acid is interpolymerized with an
ester derived from an ethylenically unsaturated carboxylic
acid.
Subclass:
329.6
With monomer-containing ether group:
This subclass is indented under subclass 328.5. Subject
matter wherein an ethylenically unsaturated ether is
interpolymerized with an ester derived from an ethylenically
unsaturated carboxylic acid.
Subclass:
329.7
Polymer derived from methyl acrylate or methyl methacrylate:
This subclass is indented under subclass 328. Subject matter
wherein methyl acrylate or methyl methacrylate is
polymerized.
Subclass:
330
This subclass is indented under subclass 319. Subject matter
drawn to interpolymers derived from at least one ester having
unsaturation in the alcohol portion and which is devoid of
unsaturation in the carboxylic acid portion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
319 for a homopolymer of an ester derived from an
unsaturated alcohol and a saturated carboxylic acid.
Subclass:
331
This subclass is indented under subclass 330. Subject matter
wherein the unsaturated ester is interpolymerized with at
least one monomer which is an ethylenically unsaturated
hydrocarbon.
Subclass:
332
This subclass is indented under subclass 72. Subject matter
wherein an unsaturated monomer contains at least one ether
function.
Subclass:
333
This subclass is indented under subclass 332. Subject matter
wherein the unsaturated monomer contains at least two ether
groups.
Subclass:
334
This subclass is indented under subclass 332. Subject matter
wherein the unsaturated monomer contains (1) at least one
aromatic group; or (2) at least two ethylenically unsaturated
groups.
Subclass:
335
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is a hydrocarbon compound
which contains at least two ethylenically unsaturated
groups.
Subclass:
336
This subclass is indented under subclass 335. Subject matter
wherein two or more ethylenically unsaturated groups are (1)
separated from each other either by an aromatic ring (e.g.,
divinyl benzene), or (2) separated by at least one carbon
atom of an acyclic carbon chain which carbon atom is not part
of a methine group (e.g., -C=C-C-C=C-, etc.), or (3) wherein
two ethylenically unsaturated groups share a single carbon
atom (e.g.,C=C=C, etc.).
Subclass:
337
This subclass is indented under subclass 335. Subject matter
which involves the interpolymerization of at least two
hydrocarbon monomers each of which contains two or more
conjugated ethylenic bonds.
Subclass:
338
This subclass is indented under subclass 335. Subject matter
which involves the interpolymerization of a hydrocarbon
monomer containing two or more conjugated ethylenic bonds
with at least one ethylenic monomer which is not a
hydrocarbon.
Subclass:
339
This subclass is indented under subclass 335. Subject matter
which involves the interpolymerization of a hydrocarbon
monomer containing two or more conjugated ethylenic bonds
with at least one nonaromatic ethylenic monomer.
Subclass:
340
This subclass is indented under subclass 335. Subject matter
which involves the interpolymerization of a hydrocarbon
monomer containing two or more conjugated ethylenic bonds
with at least one aromatic ethylenic monomer.
Subclass:
340.1
Polymerized in the presence of a water medium:
This subclass is indented under subclass 335. Subject matter
wherein a hydrocarbon monomer containing two or more
ethylenic groups is polymerized under conditions wherein an
aqueous medium (water)is employed in the process or products
which are the result of such a polymerization process.
(1) Note. This subclass is intended to take those processes
or products thereof, wherein a significant amount of water is
employed (emulsion, suspension, etc.) rather than where mere
trace amounts of water are utilized (e.g., ppm
H[subscrpt]2[end subscrpt]O, etc.).
Subclass:
340.2
From hydrocarbon having only five carbon atoms:
This subclass is indented under subclass 335. Subject matter
wherein the hydrocarbon monomer contains only five carbon
atoms (e.g., 1, 3-pentadiene, etc.).
Subclass:
340.3
From hydrocarbon having at least six carbon atoms:
This subclass is indented under subclass 335. Subject matter
wherein the hydrocarbon monomer contains six or more carbon
atoms (e.g., 2-methyl-1, 3-pentadiene, etc.).
Subclass:
340.4
Butadiene homopolymer contains at least 75 percent cis-1,
4-configuration:
This subclass is indented under subclass 335. Subject matter
wherein polybutadiene formed contains at least 75 percent
cis-configuration.
(1) Note. Polymers produced with Group VIII transition
metal catalysts are presumed to have 75 percent cis-1,
4-configuration in the absence of any disclosure to the
contrary.
Subclass:
341
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is acrylonitrile or
methacrylonitrile.
Subclass:
342
This subclass is indented under subclass 341. Subject matter
which involves the interpolymerization of acrylonitrile or
methacrylonitrile with each other or with other ethylenically
unsaturated monomers.
Subclass:
343
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is vinylidene chloride.
Subclass:
344
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is vinyl chloride.
Subclass:
344.1
Bulk or mass polymerization of vinyl chloride only:
This subclass is indented under subclass 344. Subject matter
wherein vinyl chloride only is polymerized under so-called
mass or bulk, also known as block or cast polymerization
conditions, and wherein the process does not involve the use
of a solvent or dispersing medium, and products which are the
result of such a polymerization process.
(1) Note. Appropriate for this subclass are processes
wherein the monomer or polymer produced act as solvents.
Subclass:
344.2
Polymerization of vinyl chloride only in an aqueous medium:
This subclass is indented under subclass 344. Subject matter
wherein vinyl chloride only is polymerized under conditions
wherein an aqueous medium (water)is employed in the process
and products which are the result of such polymerization
process.
(1) Note. This subclass is intended to take those processes
and products wherein a significant amount of water is
employed (emulsion, suspension, etc.) rather than where mere
trace amounts of water are utilized (e.g. ppm
H[subscrpt]2[end subscrpt]O, etc.).
Subclass:
344.3
Polyvinyl chloride characterized by physical shape, e.g.,
fiber, sheet, etc.:
This subclass is indented under subclass 344. Subject matter
wherein polyvinyl chloride homopolymer is characterized by
mere physical structure such as fiber, sheet, granular, or
the like.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, for polyvinyl
chloride material characterized by physical structure wherein
at least one physical dimension is recited.
Subclass:
345
This subclass is indented under subclass 344. Subject matter
which involves the interpolymerization of vinyl chloride with
at least one ethylenically unsaturated monomer.
Subclass:
346
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is a compound having at least
one aromatic group and only carbon and hydrogen atoms.
Subclass:
347
This subclass is indented under subclass 346. Subject matter
wherein an ethylenically unsaturated hydrocarbon monomer
having at least one aromatic group is interpolymerized with
at least one ethylenically unsaturated monomer.
Subclass:
347.1
Monomer other than styrene:
This subclass is indented under subclass 346. Subject matter
wherein the aromatic hydrocarbon contains more than eight
carbon atoms.
Subclass:
347.2
Crystalline polystyrene:
This subclass is indented under subclass 346. Subject matter
drawn to crystalline polystyrene:
(1) Note. All polymers prepared in the presence of a
transition-metal atom and in the substantial absence of water
are included herein unless the disclosure indicates to the
contrary that a noncrystalline polymer is formed.
(2) Note. All polymers prepared in the presence of a
free-radical catalyst or redox catalyst are excluded herein
unless the disclosure indicates that a crystalline polymer is
formed.
(3) Note. Any degree of crystalline or isotactic content is
sufficient for this subclass.
Subclass:
348
This subclass is indented under subclass 72. Subject matter
wherein the unsaturated monomer is a compound having only
carbon and hydrogen atoms.
Subclass:
348.1
Stretched product:
This subclass is indented under subclass 348. Subject matter
wherein the polymeric product has been physically stretched
so as to alter physical properties, e.g., biaxially stretched
polyethylene, etc.
Subclass:
348.2
At least six carbon atoms:
This subclass is indented under subclass 348. Subject matter
wherein the hydrocarbon monomer contains at least six carbon
atoms.
Subclass:
348.3
Ten or more carbon atoms:
This subclass is indented under subclass 348.2. Subject
matter wherein the hydrocarbon monomer contains ten or more
carbon atoms.
Subclass:
348.4
Six carbon atoms only:
This subclass is indented under subclass 348.2. Subject
matter wherein the hydrocarbon monomer contains only six
carbon atoms.
Subclass:
348.5
N-hexene:
This subclass is indented under subclass 348.4. Subject
matter wherein the hydrocarbon-monomer is n-hexene (i.e.,
straight-chain hexene).
Subclass:
348.6
At least four carbon atoms:
This subclass is indented under subclass 348. Subject matter
wherein the hydrocarbon monomer contains at least four carbon
atoms.
Subclass:
348.7
Isobutylene:
This subclass is indented under subclass 348.6. Subject
matter wherein the hydrocarbon monomer is isobutylene.
Subclass:
348.8
With nonhydrocarbon monomer:
This subclass is indented under subclass 348. Subject matter
wherein the hydrocarbon monomer, is interpolymerized with a
nonhydrocarbon monomer (e.g., ethylene-allyl alcohol
copolymer, etc.).
Subclass:
351
This subclass is indented under subclass 348. Subject matter
wherein the unsaturated monomer is only propylene.
Subclass:
352
This subclass is indented under subclass 348. Subject matter
wherein the unsaturated monomer is only ethylene.
Subclass:
352.2
Low density:
This subclass is indented under subclass 352. Subject matter
wherein the density of the formed polymer is less than or
equal to 0.935.
(1) Note. The term density refers to density as measured by
ASTMD 1505 or specific gravity and is not to be confused with
terms such as "apparent density" or "bulk density".
(2) Note. In the absence of a specific disclosure of
density, all polymers produced by a free radical-yielding
catalyst (e.g., peroxy, azo, or redox, etc.) are presumed to
be low density and proper herein.
CROSS-REFERENCE ART COLLECTIONS
The following subclasses are collections of published
disclosure pertaining to various aspects of art relating to
synthetic resins which are derived from ethylenic monomers,
and which aspects do not form an appropriate base for
subclass classification in the classification schedule. Note:
SPECIAL CROSS-REFERENCE ART COLLECTIONS: Subclasses
(930-940) relate only to the subject matter of subclasses
317.1+ (excluding 318).
(1) Note. Disclosures are placed for value as a search aid
and in no instance do they represent the entire extent of the
prior art.
Subclass:
901
Processes of polymerizing a vaporized ethylenically
unsaturated monomer utilizing a catalyst having at least one
transition metal atom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
913 for processes of polymerizing a vaporized monomer absent
a transition metal catalyst.
Subclass:
902
Processes of polymerizing an ethylenically unsaturated
monomer in bulk form utilizing a catalyst having at least one
transition metal atom.
Subclass:
903
Processes of polymerizing an ethylenically unsaturated
monomer in the presence of a catalyst containing a transition
metal atom, and in the presence of a hydrocarbon additive,
which additive affects the final properties of the produced
polymer or which affects the activity of the catalyst.
Subclass:
904
Processes of polymerizing an ethylenically unsaturated
monomer in the presence of a catalyst contains a transition
metal, which transition metal is carried on a polymer
support.
Subclass:
905
Processes of polymerizing an ethylenically unsaturated
monomer in the presence of elemental hydrogen and a catalyst
containing a transition metal.
Subclass:
906
Processes of polymerizing an ethylenically unsaturated
monomer in the presence of a catalyst containing a transition
metal, which transition metal catalyst has been comminuted.
Subclass:
907
Processes of polymerizing an ethylenically unsaturated
monomer utilizing a catalyst system containing a transition
metal wherein the catalyst system has been prepared by the
reacting of individual components thereof in a specified
manner.
Subclass:
908
Processes of polymerizing ethylenically unsaturated monomers
wherein the catalyst utilized has a particular particle
size.
Subclass:
909
Processes of polymerizing an ethylenically unsaturated
monomer wherein the polymerized product is distinguished by a
particular particle size.
Subclass:
910
Processes of polymerizing an ethylenically unsaturated
monomer wherein a particular suspending agent is utilized in
the polymerization process.
Subclass:
911
Processes of polymerizing an ethylenically unsaturated
monomer wherein a particular emulsifying agent is utilized in
the polymerization process.
Subclass:
912
Processes of polymerizing an ethylenically unsaturated
monomer wherein the reaction medium is purified prior to its
utilization.
Subclass:
913
Processes of polymerizing an ethylenically unsaturated
monomer in the vapor state.
Subclass:
914
Processes involving the degradation of a polymer derived from
at least one ethylenic unsaturated monomer.
Subclass:
915
Processes of polymerizing an ethylenically unsaturated
monomer utilizing a redox-type catalyst system.
Subclass:
916
Subject matter involving an interpolymer derived from at
least three ethylenically unsaturated mono-olefinic
hydrocarbon monomers.
Subclass:
917
MANIPULATIVE PROCESSES INVOLVING A SULFUR-CONTAINING TREATING
AGENT:
Manipulative processof treating a polymer derived from only
ethylenic monomers with a sulfur-containing treating agent.
Subclass:
918
POLYMERIZATION REACTORS FOR ADDITION POLYMER PREPARATION:
Subject matter involving polymerization reactor apparatus
specialized for ethylenic monomers.
Subclass:
919
CATALYST INJECTION TECHNIQUE IN ADDITION POLYMERIZATION
PROCESSES:
Subject matter involving ethylenic polymerization processes
wherein a particular technique or injecting catalyst into the
reactor is involved, e.g., into a carrier gas, sparged into
monomer stream, use of a particular pump, etc.
Subclass:
920
APPARATUS FOR USE IN ADDITION POLYMERIZATION PROCESSES:
Subject matter involving apparatus other than reactors
specialized for use in polymerization processes (e.g.,
monomer mixing apparatus, catalyst, pre-treaters, etc.).
Subclass:
921
TIME CYCLE USED IN ADDITION POLYMERIZATION PROCESS CONTROL:
Processes of polymerizing an ethylenically unsaturated
monomer wherein the polymerization process is controlled as a
function of time.
Subclass:
922
POLYMERIZATION PROCESS OF ETHYLENIC MONOMERS USING
MANIPULATIVE TECHNIQUE:
Processes of polymerizing an ethylenically unsaturated
monomer involving manipulative procedures.
Subclass:
923
ETHYLENIC MONOMERS CONTAINING AT LEAST ONE SALT GROUP:
Subject matter involving polymers derived from
salt-containing monomers.
Subclass:
930
WATER SWELLABLE OR HYDROPHILIC:
Subject matter relating to water swellable or hydrophilic
polymers derived from ethylenically unstaturated carboxylic
acids.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
931
PRESSURE SENSITIVE ADHESIVE:
Subject matter relating to polymers derived from
ethylenically unsaturated carboxylic acids and having utility
in pressure sensitive adhesive formulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
932
THICKENER OR DISPERSANT FOR AQUEOUS SYSTEM:
Subject matter relating to polymers derived from
ethylenically unsaturated carboxylic acid and having utility
as a thickener or dispersant for aqueous systems.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
933
DETERGENT PROPERTY OR LUBRICANT ADDITIVE:
Subject matter relating to polymers derived from
ethylenically unsaturated carboxylic acid and having
detergent properties or utility as a lubricant additive.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
934
ELECTRODEPOSIT, E.G., ELECTOPHORETIC, XEROGRAGHIC, ETC.:
Subject matter relating to polylmers derived from
ethylenically unsaturated carboxlic acid and having utility
in a deposition process of using electrical energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
935
HOT MELT ADHESIVE:
Subject matter relating to polymers derived from
ethylenically unsaturated carboxylic acid and having utility
in a hot melt adhesive formulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
936
PHYSIOLOGICAL USE, E.G., PHARAMACEUTICAL, VETERINARY, DENTAL,
ETC.:
Subject matter involving polymers from ethylenically
unsaturated carboxylic acid and disclosed as suitable for a
physiological use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
937
OPTICAL CLARITY:
Subject matter involving polymers from ethylenically
unsaturated carboxlic acid having property of optical
clarity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
938
RUBBERY PROPERTY:
Subject matter involving polymers from ethylenically
unsaturated carboxylic acid and having rubbery or elastomeric
property.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
939
MOISTURE PROOF OR HYDROHOBIC:
Subject matter involving polymers from ethylenically
unsaturated carboxylic acid and having moisture proof or
hydrophobic property.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
940
HIGH SOFTENING TEMPERATURE, E.G., EXPOSURE TO BOILING WATER,
BOILABLE, ETC.:
Subject matter invovling polymers from ethylenically
unsaturated carboxylic acid and having the property of high
softening temperature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317.1 and 318.1-318.5, for the subclasses within the class
hierarchy to which this cross-reference art collection
pertains.
Subclass:
941
HAVING THE TRANSITION METAL BONDED DIRECTLY TO CARBON:
Subject matter involving specified materials wherein carbon
is bonded directly to the
SEE OR SEARCH THIS CLASS, SUBCLASS:
124.2 through 125.8, for the subclasses within the class
hierarchy to which the cross-reference art collection
pertains.
Subclass:
942
POLYMERIZATION IN THE PRESENCE OF A LIQUID CO[subscrpt]2[end
subscrpt] DILUENT:
Process of using liquid phase carbon dioxide as diluent in a
polymerization reaction.
Subclass:
943
POLYMERIZATION WITH METALLOCENE CATALYST:
Process of polymerization in the presence of metallocene
catalyst.
(1) Note. Metallocene is defined as an organometallic
coordination compound which is a cyclopentadienyl derivative
of a transition metal or metal halide. Included are
substituted cyclopentadienyl moeties.
Information Products Division -- Contacts
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tel: (703) 306-2600
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Last Modified: 6 October 2000