Process for coloring fiber materials with azo dyestuff containin

Details Process for coloring fiber materials with azo dyestuff containin Process for coloring fiber materials with azo dyestuff containin

1980-10-27

1981-08-11

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Multiple chemically diverse fibers or fibers with different...

Synthetic polyamide

8549, 8681, 8917, 8918, 8924, 2602073, D06P 382, C09B 6200, C09B 2901

Patent

active

042831962

ABSTRACT:
A process is disclosed for coloring fiber materials selected from cellulose, natural or synthetic polyamides, and mixtures thereof, which comprises applying to said fiber material a water soluble dyestuff which, in the form of the free acid, has the formula: ##STR1## wherein R.sub.3 is halogen and R.sub.4 and R.sub.5 are each independently selected from hydrogen, methyl, ethyl, methoxy and ethoxy, and fixing said dyestuff on said fiber material by the action of an alkaline agent and the optional additional application of heat or steam . The dyestuffs utilized are distinguished by outstanding fastness properties such as fastness to light, wet processing and acid.

REFERENCES:
patent: 3531459 (1970-09-01), Chiddix et al.

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