1. CPC Sections
  2. CPC Section C
  3. CPC Class C08
  4. CPC Subclass C08C
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
C08C
TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS [2019-01]
NOTE

  • This subclass covers:
    • processes directed to natural rubber or to conjugated diene rubbers
    • processes directed to rubbers in general.
WARNING

  • The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:
    C08C1/16 covered by C08C 1/14
C08C 1/00
Treatment of rubber latex [2013-01]
C08C 1/02
.
Chemical or physical treatment of rubber latex before or during concentration [2013-01]
C08C 1/04
. .
Purifying; Deproteinising [2013-01]
C08C 1/06
. .
Preservation of rubber latex [2016-05]
C08C 1/065
. .
Increasing the size of dispersed rubber particles [2013-01]
C08C 1/07
. . .
characterised by the agglomerating agents used [2013-01]
C08C 1/075
. .
Concentrating [2013-01]
C08C 1/08
. . .
with the aid of creaming agents [2013-01]
C08C 1/10
. . .
by centrifugation [2013-01]
C08C 1/12
. . .
by evaporation [2013-01]
C08C 1/14
.
Coagulation [2013-01]
C08C 1/145
. .
{Heat-sensitising agents} [2013-01]
C08C 1/15
. .
characterised by the coagulants used [2013-01]
C08C 2/00
Treatment of rubber solutions [2013-01]
C08C 2/02
.
Purification [2013-01]
C08C 2/04
. .
Removal of catalyst residues [2013-01]
C08C 2/06
.
Wining of rubber from solutions [2013-01]
C08C 3/00
Treatment of coagulated rubber [2013-01]
C08C 3/02
.
Purification [2013-01]
C08C 4/00
Treatment of rubber before vulcanisation, not provided for in groups C08C 1/00 - C08C 3/02 [2016-05]
​
C08C 19/00
Chemical modification of rubber [2016-05]
NOTE

  • In the absence of an indication to the contrary a process is classified in the last appropriate place
C08C 19/02
.
Hydrogenation [2013-01]
C08C 19/04
.
Oxidation [2013-01]
C08C 19/06
. .
Epoxidation [2013-01]
C08C 19/08
.
Depolymerisation [2013-01]
C08C 2019/09
.
{Metathese} [2013-01]
C08C 19/10
.
Isomerisation; Cyclisation [2013-01]
C08C 19/12
.
Incorporating halogen atoms into the molecule [2013-01]
C08C 19/14
. .
by reaction with halogens [2013-01]
C08C 19/16
. .
by reaction with hydrogen halides [2013-01]
C08C 19/18
. .
by reaction with hydrocarbons substituted by halogen [2013-01]
C08C 19/20
.
Incorporating sulfur atoms into the molecule [2013-01]
C08C 19/22
.
Incorporating nitrogen atoms into the molecule [2013-01]
C08C 19/24
.
Incorporating phosphorus atoms into the molecule [2013-01]
C08C 19/25
.
Incorporating silicon atoms into the molecule [2013-01]
C08C 19/26
.
Incorporating metal atoms into the molecule [2013-01]
C08C 19/28
.
Reaction with compounds containing carbon-to-carbon unsaturated bonds (graft polymers C08F 279/00) [2016-05]
C08C 19/30
.
Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule [2013-01]
C08C 19/32
. .
reacting with halogens or halogen-containing groups [2013-01]
C08C 19/34
. .
reacting with oxygen or oxygen-containing groups [2013-01]
C08C 19/36
. . .
with carboxy radicals [2013-01]
C08C 19/38
. . .
with hydroxy radicals [2013-01]
C08C 19/40
. . .
with epoxy radicals [2013-01]
C08C 19/42
. .
reacting with metals or metal-containing groups [2013-01]
C08C 19/44
. . .
of polymers containing metal atoms exclusively at one or both ends of the skeleton [2013-01]