Tanning agent and a process for its preparation

US4828570A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Ulrich Riegel · Landstuhl, DE
• Fritz Engelhardt · Frankfurt am Main, DE
• Kuno Reh · Frankfurt am Main, DE
• Helmut Croon · Frankfurt am Main, DE
• Hermann Becker · Trier, DE
• Werner Lotz · Niedernhausen, DE

Key dates

• Filing date: Oct 9, 1986
• Grant date: May 9, 1989
• Expiry date: Oct 9, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C3/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Hides, skins and pelts are tanned by use of a tanning agent which comprises the reaction product of acetaldehyde, formaldehyde and a formylamino compound.