Uniformly dyed water-swellable cellulosic fibers

US4150943A · kind A · utility

Assignee

• BASF SE

Inventors

• Johannes Dehnert · Ludwigshafen, DE
• Gunther Lamm · Haßloch, DE
• Werner Juenemann · Bad Dürkheim, DE
• Guenter Meyer · Ludwigshafen, DE

Key dates

• Filing date: Oct 31, 1977
• Grant date: Apr 24, 1979
• Expiry date: Oct 31, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B31/153
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Uniformly dyed water-swellable cellulosic fibers which are fast to washing, dry-cleaning, sublimation and light and have been produced by contacting water-swellable cellulose fibers sequentially or concomitantly with water, ethylene glycol or a derivative thereof and, while the fibers are still swollen, an essentially water-insoluble dye of the formula ##STR1## in which D is the radical of a diazo component; PA1 R is hydrogen, C.sub.1 to C.sub.7 alkyl, phenyl or phenyl bearing methyl as a substituent; PA1 X is cyano, carbamoyl or substituted carbamoyl; PA1 R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical; PA1 R.sup.2 is hydrogen or an aliphatic, cycloaliphatic or araliphatic radical; PA1 R.sup.3 and R.sup.4 independently of one another have the same meanings as R.sup.1 and R.sup.2 ; and PA1 R.sup.1 --n--r.sup.2 and R.sup.3 --N--R.sup.4 independently of one another are saturated heterocyclic radicals.