Casein coatings for leather insolubilized with alkoxy alkyl ureas

US4374872A · kind A · utility

Assignee

• BASF SE

Inventors

• Guenter Eckert · Schifferstadt, DE
• Lothar Wuertele · Ludwigshafen, DE
• Harro Petersen · Bischofswerda, DE
• Ulrich Goeckel · Haßloch, DE
• Kurt F. Fischer · Leonard, US

Key dates

• Filing date: Jul 8, 1981
• Grant date: Feb 22, 1983
• Expiry date: Jul 8, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C11/003
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process is disclosed for insolubilizing casein coatings for leather utilizing alkoxy alkyl ureas. The coatings are cured in the presence of an acid catalyst. The casein coatings of the invention avoid the disadvantageous use of aldehydes such as formaldehyde and glutaraldehyde to cure the casein and reduce its water sensitivity and unexpectedly show improved wet abrasion resistance.