Use of carboxyamide-polysiloxanes for water proofing leather

US6110230A · kind A · utility

Assignee

• BASF SE

Inventors

• Holger Friedrich · Frankenthal (Pfalz), DE
• Michael Kneip · Ludwigshafen, DE
• Bernd Leutner · Bischofswerda, DE

Key dates

• Filing date: Jul 16, 1999
• Grant date: Aug 29, 2000
• Expiry date: Jul 16, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/388
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Specific carboxyamide-polysiloxanes of the formula IV ##STR1## or the formula IVa ##STR2## having a carboxyl content of from 0.02 to 1.0 mmol/g and an average molar mass (number average) [M.sub.n ] in the range from 2.times.10.sup.3 to 60.times.10.sup.3 g/mol are used for hydrophobicizing materials of fibrous structure, especially leather or fur skins.