Kopolimerizatlarin deri/ kürklerin tabakalanmasi, yaglanmasi, hidrofoblastirilmasinda kullanilmasi

(a) a bileseni olarak en azindan monoetilik doymamis bir C4-C6 arasi-dikarbonasitin veya bunun anhidridinin 20'den 90 agirlik-%'e kadar, (b) B bileseni olarak en azindan, 2-6 arasi karbon atomu tasiyan bir olefinin 5'den 50 agirlik-%'e kadar, (c) C bileseni olarak en azindan, uzun zincirli olefin grubundan olan hidrofob komonomerin, akrilasit veya metakrilasitle birlikte uzun zincirli alkollerden olan esterin, akrilasit ya da metakrilasit ile birlikte uzun zincirli amidlerin ve uzun zincirli alkilvinileterin amidlerinin 5-50 agirlik-% arasinda olan (Devami var) Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of(a) from 20 to 90% by weight of at least one monoethylenically unsaturated C4-6-dicarboxylic acid or the anhydride thereof, as component A,(b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B,(c) from 5 to 50% by weight of at least one hydrophobic comonomer from the group consisting of long-chain olefins, esters of long-chain alcohols with acrylic acid or methacrylic acid, long-chain amides of acrylic acid or methacrylic acid, and long-chain alkyl vinyl ethers, as component C,(d) from 0 to 40% by weight of further comonomers which can be copolymerized with the above monomers, as component D,where the sum of the amounts of components A, B, C and, if used, D is 100% by weight, followed by at least partial esterification or hydrolysis and neutralization and/or reaction of the carboxyl groups formed during the hydrolysis with bases, for treating leather and/or fur skins.