Desizing cotton and cotton-containing fabrics

US4654043A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Streit · Worms, DE
• Linda Witt · Mannheim, DE
• Heinz-Dieter Angstmann · Ludwigshafen, DE
• Rolf Blanckenhorn · Ludwigshafen, DE
• Rolf Fikentscher · Ludwigshafen, DE

Key dates

• Filing date: Jan 11, 1985
• Grant date: Mar 31, 1987
• Expiry date: Jan 11, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L1/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Cotton and cotton-containing fabrics are desized in strongly alkaline aqueous solution with an alkali metal hypochlorite by a process in which from 0.5 to 8.0 g/l of a tertiary hydroxyalkylamine which is soluble in aqueous alkaline solution, of an oxyethylated and/or oxypropylated ethylenediamine, of an oxyethylated polyethyleneimine, of malonic acid, of cyanuric acid, of a cyanuric acid derivative, of a urea derivative, of cyanoguanidine, of oxazolidone, of pyrrolidone, of N-methylpyrrolidone, of N-methylimidazole or of a mixture of these is added to the aqueous bath, as an activator for the hypochlorite. Activators for hypochlorite are used in the desizing of cotton and cotton-containing fabrics in strongly alkaline aqueous solutions.