Patent ID: 8492497

Claim:
A copolymer comprising, as comonomers in copolymerized form: (A) at least one ethylenically unsaturated mono- or dicarboxylic acid; (B) at least one ethylenically unsaturated compound which has at least one structural unit of the general formula (I) per molecule: wherein: each R 1 is different or identical and represents a hydrogen atom, a C 1 -C 30 -alkyl, a C 3 -C 10 -cycloalkyl, a C 6 -C 30 -aryl or a C 7 -C 30 -aralkyl, each A 1 is different or identical and represents a C 2 -C 10 -alkylene, a C 6 -C 10 -arylene or a C 7 -C 10 -aralkylene, each m is different or identical and represents an integer from 2 to 6, each n is different or identical and represents an integer from zero to 200; and (C) at least one further comonomer.