Copolymers based on long-chain unsaturated esters and ethylenically unsaturated carboxylic acids for making leather and furs water repellent

摘要

Copolymers which containPPa) from 50 to 90% by weight of C.sub.8 -C.sub.40 -alkyl methacrylates, vinyl esters of C.sub.8 -C.sub. 40 -carboxylic acids or mixtures thereof andPPb) from 10 to 50% by weight of monoethylenically unsaturated C.sub.3 -C.sub. 12 - carboxylic acids, monoethylenically unsaturated dicarboxylic anhydrides, monoesters or monoamides of monoethylenically unsaturated C. sub.4 -C.sub. 12 -dicarboxylic acids, amides of C.sub.3 -C.sub.12 - monocarboxylic acids or mixtures thereofPPas copolymerized units and have molecular masses of from 500 to 30,000 are used in at least partially neutralized form in aqueous solution or dispersion for making leather and furs water repellent.