Azo-dyes, their preparation and use

Details Azo-dyes, their preparation and use Azo-dyes, their preparation and use

1979-11-21

1982-09-07

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

206141, 206162, 206163, C07C10704, C09B 62085

Patent

active

043483186

ABSTRACT:
The invention relates to azo dyes of the formula ##STR1## in which R is hydrogen, an alkyl radical having 1 to 6 carbon atoms, which can contain --O-- and --S--members and can be further substituted, or a cycloalkyl radical, R.sub.1 is hydrogen or C.sub.1-4 -alkyl, D is an aryl radical and Pz is a pyrazolone radical, the azo dye of the formula (1) containing one and not more than one strongly acid group conferring solubility in water, their preparation and their use for dyeing and printing textile material.

REFERENCES:
patent: 2795576 (1957-06-01), Fasciati
patent: 2891940 (1959-06-01), Fasciati
patent: 2891941 (1959-06-01), Fasciati et al.
patent: 2892831 (1959-06-01), Stephen
patent: 3040023 (1962-06-01), Fasciati et al.
patent: 4141890 (1979-02-01), Hegar et al.

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