Graft polymers comprising sidechains containing cyclic n-vinylamides

摘要

Graft polymers containing (A) a polymeric grafting base devoid of monoethylenically unsaturated units, and (B) polymeric side chains formed by polymerization of a cyclic N-vinylamide of the general formula I where R is C1-C5-alkyl and R<1 >is hydrogen or C1-C4-alkyl, wherein said side chains (B) account for >=60% by weight of the total polymer.