Use of copolymers having polysiloxane units in the treatment of leather and furs

US5433753A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Kurt Dahmen · Rheydt, DE
• Richard Mertens · Krefeld, DE
• Manfred Kaussen · Ottersweier, DE
• Helmut Lohmann · Krefeld, DE
• Horst Kilian · Krefeld, DE

Key dates

• Filing date: May 25, 1994
• Grant date: Jul 18, 1995
• Expiry date: May 25, 2014

Classification

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

Abstract

The present invention discloses the use of polymers which have built-in by polymerization 20 to 70%-wt. of a hydrophobic monomer selected from long-chain alpha-olefins, long-chain alkyl(meth)acrylates, vinyl esters of long-chain carboxylic acids, long-chain vinyl ethers, or mixtures of these monomers, 1 to 60%-wt. of a monomer with a specific polysiloxane group, and 20 to 35%-wt. water-soluble, unsaturated acids, unsaturated C.sub.4 -C.sub.6 dicarboxylic anhydrides, semi-esters or semi-amides of unsaturated C.sub.4 -C.sub.6 dicarboxylic acids, or mixtures of these monomers, in partially neutralized form as aqueous solution or dispersion, for softening, fat-liquoring and greasing, or hydrophobing leathers and furs.