| US 7,462,660 B2 | ||
| Copolymers containing styrene oxide and use thereof as emulsifiers and dispersing agents | ||
| Klaus Poellmann, Burghausen (Germany); Martin Glos, Muehldorf (Germany); Anton Strasser, Altoetting (Germany); and Eckart Kraemer, Wiesbaden (Germany) | ||
| Assigned to Lariant Produkte (Deutschland) GmbH, Sulzbach (Germany) | ||
| Appl. No. 10/535,020 PCT Filed Oct. 30, 2003, PCT No. PCT/EP03/12043 § 371(c)(1), (2), (4) Date May 12, 2005, PCT Pub. No. WO2004/044035, PCT Pub. Date May 27, 2004. |
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| Claims priority of application No. 102 52 452 (DE), filed on Nov. 12, 2002. | ||
| Prior Publication US 2006/0058429 A1, Mar. 16, 2006 | ||
| Int. Cl. C08L 95/00 (2006.01) | ||
| U.S. Cl. 524—59 [524/800] | 8 Claims |
1. A method for emulsion polymerization, said method comprising adding a copolymer of the formula (1)
 R1 is hydrogen, a C1-C5-alkyl radical, or C2-C5-alkenyl radical which may also contain hetero atoms, an acid group or an aliphatic or aromatic group having 1 to 50 carbon
atoms, including an acid group,
R2 and R3, independently of one another, are hydrogen, methyl and/or ethyl,
n is a number from 0 to 100, and
m is a number from 3 to 30, and
k is a number from 1 to 200, and
A is a copolymer unit of the formula (2)
 R4 is hydrogen, a C1-C5-alkyl radical or C2-C5-alkenyl radical which may also contain hetero atoms, an acid group or an aliphatic or aromatic group having 1 to 50 carbon
atoms, including an acid group,
R5 is hydrogen, methyl and/or ethyl,
x is a number from 0 to 100, and
y is a number from 3 to 30,
where R1 is hydrogen or an acid group,
via the valence denoted by “*”, to a polymer reaction mixture and polymerizing said mixture.
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