Use of graft polymers for fatliquoring and filling leather and fur skins

US5620748A · kind A · utility

Assignee

• BASF SE

Inventors

• Hermann Birkhofer · Ludwigshafen, DE
• Peter Danisch · Ludwigshafen, DE
• Walter Denzinger · Speyer, DE
• Heinrich Hartmann · Schifferstadt, DE
• Michael Kneip · Ludwigshafen, DE

Key dates

• Filing date: Mar 3, 1994
• Grant date: Apr 15, 1997
• Expiry date: Mar 3, 2014

Classification

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

Abstract

Soft leathers with a pleasant hand are obtained on fatliquoring and filling leather and fur skins with water-soluble or water-dispersible graft polymers of vegetable and animal oils, obtainable by radically initiated polymerization PA1 A) of a monomer or monomer mixture comprising PA2 (a) from 20 to 100% by weight of monoethylenically unsaturated carboxylic acids and/or monoethylenically unsaturated sulfonic acids and/or monoethylenically unsaturated phosphonic acids or their alkali metal, alkaline earth metal or ammonium salts, PA2 (b) from 0 to 80% by weight of other monoethylenically unsaturated monomers which are copolymerizable with the monomers (a), and PA2 (c) from 0 to 5% by weight of at least doubly ethylenically unconjugatedly unsaturated monomers PA1 in the presence of PA1 B) vegetable and/or animal oils in a weight ratio of A:B of (80-1):(20-99).