Hydrophobization of leather, pelts and leather substitute materials with carboxyl-containing polysiloxanes

US4931062A · kind A · utility

Assignee

• BASF SE

Inventors

• Herbert Bay · Reutlingen, DE
• Guenter Eckert · Schifferstadt, DE
• Wolfram Bergold · Heidelberg, DE

Key dates

• Filing date: Jan 10, 1989
• Grant date: Jun 5, 1990
• Expiry date: Jan 10, 2009

Classification

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

Abstract

Leather, pelts and leather substitute materials are hydrophobized with a carboxyl-containing polysiloxane whose carboxyl groups are present in neutralized form in an aqueous phase in the absence of emulsifiers and without aftertreatment with mineral tanning agents.