Carboxyl- and amino-containing copolymer for after-tanning mineral tanned leather

US4596581A · kind A · utility

Assignee

• BASF SE

Inventors

• Lothar Hohr · Worms, DE
• Dietrich Lach
• Rolf Streicher · Worms, DE

Key dates

• Filing date: May 10, 1985
• Grant date: Jun 24, 1986
• Expiry date: May 10, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C3/22
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An amino-containing and carboxyl-containing polymer tanning agent containing more carboxyl groups than amino groups, when used for retanning mineral-tanned leather, gives, alone or in combination with conventional anionic retanning agents, leather which is readily dyeable and has good sensory properties.