Processes of treating leather and skins employing polymer compositions

US6336942B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Peter Danisch · Ludwigshafen, DE
• Johannes P. Dix · Schifferstadt, DE
• Walter Denzinger · Speyer, DE
• Axel Kistenmacher · Ludwigshafen, DE
• Michael Kneip · Ludwigshafen, DE
• Hans-Joachim Muller · Remscheid, DE
• Joachim Rosch · Ludwigshafen, DE
• Gunnar Schornick · Neuleiningen, DE

Key dates

• Filing date: Sep 15, 1997
• Grant date: Jan 8, 2002
• Expiry date: Sep 15, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C9/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous solutions or aqueous emulsions of copolymers are obtainable by copolymerization of(a) from 20 to 95 mol % of at least one monoethylenically unsaturated C4-C12-dicarboxylic acid or the anhydride thereof with(b) from 5 to 80 mol % of at least one branched oligomer or polymer which has a vinyl, vinylidene or alkylvinylene terminal group and is of at least 9 carbon atoms and(c) from 0 to 50 mol % of at least one further monoethylenically unsaturated compound which is copolymerizable with the monomers (a) and (b)and contain from 0.5 to 70% by weight, based on the total amount of the solutions or emulsions, of these copolymers. These copolymer solutions or emulsions are suitable as leather assistants and as dispersants for pigments.