Finishing leather with a synthetic carboxylated rubber dispersion

US4581034A · kind A · utility

Assignee

• BASF SE

Inventors

• Gunter Eckert · Schifferstadt, DE
• Wolfgang Groh · Mannheim, DE
• Hans Lutje · Bischofswerda, DE
• Franz Schmidt · Mannheim, DE
• Jurgen Schmidt-Thummes · Schifferstadt, DE

Key dates

• Filing date: May 15, 1984
• Grant date: Apr 8, 1986
• Expiry date: May 15, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/4935
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Leather is finished with a synthetic carboxylated rubber dispersion to which as much as 50% by weight of one or more oxides and/or hydroxides of divalent and/or trivalent metals may have been added, finishing being carried out by a process in which the carboxylated rubber dispersion is prepared by the emulsion feed method, with a conversion of more than 90%, in such a way that it contains from 20 to 60% by weight of carboxylated rubber which is soluble in dimethylformamide at room temperature.