Preparation of water-soluble copolymers of at least one water- soluble N- vinyllactam and at least one hydrophobic comonomer

摘要

The present invention relates to a novel process for preparing water- soluble copolymers of at least one water-soluble N-vinyllactam of the formula I ##STR1## where n=1 or 2, and at least one hydrophobic comonomer having a water-solubility of 1 to 85 g/l, by free-radical polymerization in aqueous solution.