| abstract |
The invention relates to water-soluble copolymers based on a) 50 to 97 wt.% of one or more non-ionic monomers that contain ethylenically unsaturated amide groups, b) 0.1 to 10 wt.% of one or more monomers that contain ethylenically unsaturated silane groups, and c) 1 to 30 wt.% of one or more ionic, ethylenically unsaturated monomers and optionally one or more other ethylenically unsaturated monomers, the amounts in wt.% adding up to 100 wt.%. |