Patent · US Expired

Dyeing of leather with pigments

US4983185A · kind A · utility

5Cited by

3References

5Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Streicher · Worms, DE
Ortwin Schaffer · Ludwigshafen, DE
Horst Belde · Ludwigshafen, DE
Paul Guenthert · Schifferstadt, DE

Key dates

Filing date	May 26, 1989
Grant date	Jan 8, 1991
Priority date	—
Expiry date	May 26, 2009

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06P3/32
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Leather is dyed with pigments in an aqueous liquor at from 20.degree. to 60.degree. C. in the presence of an alkoxylated amine of 20 or more carbon atoms.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.