Waterproofing leather and skins

US4701269A · kind A · utility

Assignee

• BASF SE

Inventors

• Herbert Bay · Reutlingen, DE
• Rudi Widder · Leimen, DE
• Guenter Eckert · Schifferstadt, DE

Key dates

• Filing date: Aug 13, 1986
• Grant date: Oct 20, 1987
• Expiry date: Aug 13, 2006

Classification

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

Abstract

A process for waterproofing leather and skins with a silicone oil and the salt of an N-(C.sub.9 -C.sub.20 -acyl)-amino acid as an emulsifier for the silicone oil, which is carried out in the aqueous phase during or after retanning, and the use of salts of N-acylamino acids as emulsifiers for silicone oils in the waterproofing of leather and skins in the aqueous phase, and the mixtures used for this purpose.