Washfast disazo dyestuffs

Details Washfast disazo dyestuffs Washfast disazo dyestuffs

1978-11-20

1980-04-22

Czaja, Donald E.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 82, C09B 3104, C09B 3106, C09B 3108

Patent

active

041993187

ABSTRACT:
Compounds of the formula ##STR1## in which A.sub.1 and A.sub.2 may be hydrogen, alkyl, alkoxy, hydroxy, halo, trifluoromethyl, alkoxyalkoxy, hydroxyalkyl, hydroxyalkoxy, alkoxyalkyl, sulfamoyl, N-alkylsulfamoyl, carboxylic acyl or carboxylic acylamino, B.sub.1 and B.sub.2 are each hydrogen, lower alkoxy, lower alkyl, chloro, bromo, trifluoromethyl, alkoxyalkoxy, hydroxyalkyl, hydroxyalkoxy, or alkoxyalkyl, wherein at least one of A.sub.1, A.sub.2, B.sub.1, or B.sub.2 is alkoxy, and D represents a hydroxy or amino naphthyl or a benzylamino substituted phenyl group, are valuable dyestuffs for natural and synthetic polyamide fibers giving substantially complete exhaustion from neutral or acid aqueous dyebaths without further addition of chemical agents.

REFERENCES:
patent: T932006 (1975-03-01), Emerson et al.
patent: T937003 (1975-08-01), Larson
patent: 3643269 (1977-02-01), Schweizer
patent: 3676050 (1972-07-01), James
patent: 3932378 (1976-01-01), Fasciati

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