Isothiazole type azo dyes containing imidazo type couplers

Details Isothiazole type azo dyes containing imidazo type couplers Isothiazole type azo dyes containing imidazo type couplers

1982-03-11

1983-12-06

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260153, 260154, 260155, 260156, 260157, 260162, 260163, 260165, C09B 29039, C09B 2936, C09B 2946, C09B 2948

Patent

active

044192894

ABSTRACT:
Disclosed are novel azo dyes containing an isothiazole azo moiety which may be substituted, and a heterocyclic coupler which also may be substituted. The dyes produce yellow shades on, for example, hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and have excellent fastness properties including lightfastness, washfastness and resistance to sublimation, and dye at unusually low energy levels. The dyes have the general formulae: ##STR1## wherein the various substituents, R.sup.1 and R.sup.2 are each selected from hydrogen and a wide variety of groups such as lower alkyl, --CN, halogen, and the like, R.sup.3 and R.sup.4 are each selected from hydrogen, lower alkyl, benzyl and phenyl, and Z represents the atoms necessary to complete a five or six membered ring.

REFERENCES:
patent: 3143540 (1964-08-01), Meen et al.
patent: 3634391 (1972-01-01), Fisher et al.
patent: 3928309 (1975-12-01), Clark
patent: 3936435 (1976-02-01), Clark
patent: 4104268 (1978-08-01), Dorsch et al.
patent: 4252716 (1981-02-01), Kuhlthau
patent: 4330467 (1982-05-01), Fleische et al.

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