Mixtures of azo dyes from 2-amino-3-nitro-5-acyl thiophenes and

Details Mixtures of azo dyes from 2-amino-3-nitro-5-acyl thiophenes and Mixtures of azo dyes from 2-amino-3-nitro-5-acyl thiophenes and

1982-04-14

1984-09-18

Higel, Floyd D.

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Mixed dyes, noncomplexed

260152, C09B 29033, C09B 2909, C09B 6722, D06P 334

Patent

active

044721692

ABSTRACT:
Disclosed are mixtures of dyes of the formula ##STR1## wherein R is alkyl of 1-4 carbons; R.sup.1 is H or alkyl of 1-4 carbons; R.sup.2 is alkyl of 1-7 carbons, or ethoxyethoxyethyl; R.sup.3 is H or methoxy; and R.sup.4 is H, methyl, or --NHCOCH.sub.3. These mixtures exhibit improved properties such as reduced energy of application, for example, in the dyeing of polyester and cellulose diacetate or triacetate fibers and their blends with other synthetic and natural fibers.

REFERENCES:
patent: T964005 (1977-11-01), Coates et al.
patent: 2805218 (1957-09-01), Towne et al.
patent: 3232693 (1966-02-01), Lange et al.
patent: 3342803 (1967-09-01), Artz et al.
patent: 3954395 (1976-05-01), Leverenz
patent: 3955919 (1976-05-01), Fujii et al.
patent: 4321055 (1982-03-01), Hansen et al.

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