AQUEOUS DISPERSIONS OF WATER-SOLUBLE POLYMERS OF N-VINYL CARBOXYLIC ACID AMIDES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE

摘要

The invention relates to aqueous dispersions of water-soluble polymers of N- vinyl carboxylic acid amides that contain, as stabilizers, water-soluble, cross-linked graft polymers that can be obtained by the radically initiated polymerization of compounds with at least two ethylenically unsaturated doub le bonds in the presence of polyalkylene glycols. The invention also relates to a method for producing aqueous dispersions of water-soluble polymers of N-viny l carboxylic acid amides by the radical polymerization of N-vinyl carboxylic acid amides in an aqueous medium and in the presence of said stabilizers, an d to the use of the aqueous dispersions as dehydrators, flocculants, retention agents, wet-strength agents, dry-strength agents and as fixing agents in the production of paper.