Process for softening/stuffing leather and fur skins

US5575939A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Kurt Dahmen · Rheydt, DE
• Richard Mertens · Krefeld, DE
• Thomas Muller · Bad Homburg vor der Höhe, DE
• Helmut Lohmann · Krefeld, DE

Key dates

• Filing date: Jun 9, 1995
• Grant date: Nov 19, 1996
• Expiry date: Jun 9, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the fat liquoring/softening of leathers and furs by treatment with an aqueous dispersion of a copolymer obtainable by polymerization of a) maleic anhydride, b) C.sub.12 -C.sub.30 alpha-olefins, esters of (meth)acrylic acid and/or maleic acid with C.sub.12 -C.sub.30 alcohols and c) optionally, further hydrophilic, ethylenically unsaturated monomers which are copolymerizable with a) and b), reaction of the anhydride groups with monovalent alcohols comprising at least one ether functionality, and partial neutralization or hydrolysis of the residual acid or anhydride groups and manufacture of a flowable dispersion having an active substance content of at least 40%-wt.