Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1983-07-15
1987-03-17
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
534733, 534753, 534774, 534776, 534792, 534793, 534794, C09B 29036, C09B 2940, D06P 118, D06P 354
Patent
active
046508619
ABSTRACT:
This invention relates to novel azo dyes containing a 4-nitropyrazole azo moiety which may be substituted, for example, with an alkyl group which itself may be substituted, and an aniline coupler which may be substituted. The dyes produce bright red shades on hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and show unexpected improvements in one or more of such properties as fastness to light, wash, ozone, gas such as oxides of nitrogen, perspiration, crock and sublimation, dyeability at desirable low energy levels to deep shades, build, pH stability, bloom resistance, leveling, migration, dye bath exhaustion, dye transfer, and the like.
REFERENCES:
patent: 3515715 (1970-06-01), Straley et al.
patent: 3639384 (1972-02-01), Weaver et al.
patent: 3639385 (1972-02-01), Weaver et al.
patent: 3948878 (1976-04-01), Coispeau
patent: 4101540 (1978-07-01), Coispeau
patent: 4210582 (1980-07-01), De Montmollin et al.
patent: 4271071 (1981-06-01), Clark
patent: 4301070 (1981-11-01), Giles et al.
Clark Gary T.
Eller Bill A.
Weaver Max A.
Ciba-Geigy Corporation
Higel Floyd D.
McC. Roberts Edward
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