Removal of oligomer deposits from textile materials

US4294576A · kind A · utility

Assignee

• BASF SE

Inventors

• Herbert Helfert · Bischofswerda, DE
• Friedrich Reinert · Monsheim, DE
• Paul Anthony Richter · Friedelsheim, DE
• Michele Vescia · Schifferstadt, DE
• Dieter Wegerle · Mannheim, DE

Key dates

• Filing date: May 22, 1980
• Grant date: Oct 13, 1981
• Expiry date: May 22, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P5/06
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for removing oligomer deposits from dyed and non-dyed textile materials which consist of polyester fibers or of blends of these fibers with other fibers, and from dyeing machinery, by a treatment with an aqueous, alkaline liquor which contains from 0.1 to 10 g/l of a quaternary ammonium compound carrying not less than two C.sub.6 -C.sub.22 -alkyl or -alkenyl groups on the quaternary nitrogen, at up to 100.degree. C. The oligomers are hydrolyzed and are removed together with the treatment liquor.