Bleaching cotton-containing fabrics with hypochlorite at elevated temperatures

US4622037A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Streit · Worms, DE
• Dieter Bassing · Ludwigshafen, DE
• Karlheinz Gebert · Heddesheim, DE
• Friedrich Klippel · Ludwigshafen, DE
• Norbert Leppert · Speyer, DE

Key dates

• Filing date: May 3, 1985
• Grant date: Nov 11, 1986
• Expiry date: May 3, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L4/21
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Cotton-containing fabrics are bleached with hypochlorite in an aqueous alkaline liquor at elevated temperatures by a process in which bleaching is carried out at from 80.degree. to 110.degree. C. in the course of from 30 seconds to 25 minutes in the presence of a water-soluble polyhydroxy compound, as a readily oxidizable substance, in an amount of from 0.5 to 20 g/l.