Use of rection products of Homo- or copolymers based on monoethylenically unsaturated dicarboxylic anhydrides with amines or alcohols for fatliquoring and filling leather and fur skins

US5433752A · kind A · utility

Assignee

• BASF SE

Inventors

• Hermann Birkhofer · Ludwigshafen, DE
• Peter Danisch · Ludwigshafen, DE
• Walter Denzinger · Speyer, DE
• Heinrich Hartmann · Schifferstadt, DE
• Norbert Greif · Worms, DE
• Knut Oppenlaender · Ludwigshafen, DE

Key dates

• Filing date: Aug 26, 1994
• Grant date: Jul 18, 1995
• Expiry date: Aug 26, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C9/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Products useful for fatliquoring and filling leather and fur skins are obtained on reacting PA1 A) homo- or copolymers based on monoethylenically unsaturated dicarboxylic anhydrides and obtainable by free-radically initiated polymerization of PA2 a) from 30 to 100 mol % of one or more monoethylenically unsaturated dicarboxylic anhydrides of from 4 to 10 carbon atoms, PA2 b) from 0 to 70 mol % of one or more aromatic vinyl compounds of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl and k is 1 or 2, PA2 (c) from 0 to 70 mol % of one or more vinyl esters of C.sub.1 - to C.sub.8 -carboxylic acids, PA2 (d) from 0 to 50 mol % of one or more C.sub.2 - to C.sub.6 -olefins, and PA2 (e) from 0 to 30 mol % of one or more monoethylenically unsaturated C.sub.3 - to C.sub.5 -carboxylic acids, PA1 which mixture of monomers (a) to (e) may additionally contain up to 10% by weight of further copolymerizable monomers, with PA1 B) amines of the general formula R.sub.4 R.sub.5 NH, where R.sup.4 is hydrogen, C.sub.1 - to C.sub.20 -alkyl, C.sub.5 - to C.sub.8 -cycloalkyl or C.sub.2 - to C.sub.4 -hydroxyalkyl and R.sup.5 is C.sub.6 - to C.sub.30 -alkyl…