Polymer composition and process for treating leather and fur skins

US6200640A · kind A · utility

Assignee

• BASF SE

Inventors

• Michael Kneip · Ludwigshafen, DE
• Axel Kistenmacher · Ludwigshafen, DE
• Peter Danisch · Ludwigshafen, DE
• Gerhard Wolf · Mannheim, DE

Key dates

• Filing date: Nov 9, 1998
• Grant date: Mar 13, 2001
• Expiry date: Nov 9, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C9/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of PA1 (a) from 20 to 90% by weight of at least one monoethylenically unsaturated C.sub.4-6 -dicarboxylic acid or the anhydride thereof, as component A, PA1 (b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B, PA1 (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, PA1 (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.