Process for the treatment of cellulose fibres

US6203746A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Peter Aeschlimann · Allschwil, CH
• Bernhard Muller

Key dates

• Filing date: Apr 9, 1999
• Grant date: Mar 20, 2001
• Expiry date: Apr 9, 2019

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2101/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the treatment of lyocell cellulose fibers which comprises treating the lyocell cellulose fibers with at least one compound of the formula ##STR1## wherein PA1 R.sub.1 and R.sub.2 are each independently of the other halogen or a sulfo-substituted phenylamino radical, at least one of the two substituents R.sub.1 and R.sub.2 being halogen, PA1 R.sub.3 and R.sub.4 are each independently of the other unsubstituted phenyl or phenyl substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, acylamino, sulfo, --SO.sub.2 --CH.dbd.CH.sub.2, --SO.sub.2 --CH.sub.2 CH.sub.2 --OSO.sub.3 H, --NH--CO--CBr.dbd.CH.sub.2 or by --NH--CO--CHBr--CH.sub.2 Br, PA1 A.sub.1 and A.sub.2 are each independently of the other --O--, --S-- or --NR.sub.5 --, wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.4 alkyl, PA1 A.sub.3 and A.sub.4 are each independently of the other --O--, --S-- or --NR.sub.5 --, or --A.sub.3 --R.sub.3 is halogen and/or --A.sub.4 --R.sub.4 is halogen, wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.4 alkyl and PA1 B is an aromatic bridge member, or PA1 --A.sub.1 --B--A.sub.2 -- is a bridge member of the formula --NH--CH.sub.2 --CH(CH.sub.3)--N…