Patent ID: 7462660

Claim:
A method for emulsion polymerization, said method comprising adding a copolymer of the formula (1) in which R 1 is hydrogen, a C 1 -C 5 -alkyl radical, or C 2 -C 5 -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, R 2 and R 3 , 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) in which R 4 is hydrogen, a C 1 -C 5 -alkyl radical or C 2 -C 5 -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, R 5 is hydrogen, methyl and/or ethyl, x is a number from 0 to 100, and y is a number from 3 to 30, where R 1 is hydrogen or an acid group, via the valence denoted by “*”, to a polymer reaction mixture and polymerizing said mixture.