| abstract |
Modified polymers in acid form or in the form of their salts consist of A) a carboxyl-containing copolymer prepared by emulsion polymerization and B) side radicals introduced therein by partial grafting onto the carboxyl groups and of the general formula I <IMAGE> I where R1 and R2 are each hydrogen or C1-C5-alkyl, X is oxygen, sulfur or imino, Y is an ester, amide, ether or C1-C10-alkylene group and 1<n</=100 for the average number n of the monomer units undergoing addition per reacted acid function. |