| 摘要 |
<p>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 C<SUB>1</SUB>-C<SUB>5</SUB>-alkyl and R<SUP>1 </SUP>is hydrogen or C<SUB>1</SUB>-C<SUB>4</SUB>-alkyl, wherein said side chains (B) account for >=60% by weight of the total polymer.</p> |
