Disperse monoazo dyestuffs containing a thiophene residue

Details Disperse monoazo dyestuffs containing a thiophene residue Disperse monoazo dyestuffs containing a thiophene residue

1976-02-02

1978-03-14

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260156, 260329AM, 2603322C, C09B 2908, C09B 2926

Patent

active

040790509

ABSTRACT:
The water-insoluble monoazo dyestuffs, free from sulphonic acid and carboxylic acid groups, which are of the formula: ##STR1## wherein Y is hydrogen, lower alkyl, optionally substituted phenyl or nitro; Z is nitro, cyano, optionally substituted phenyl, optionally substituted lower alkoxycarbonyl or carbonamido; T is hydrogen, optionally substituted lower alkyl or optionally substituted lower alkoxy;
W is an acylamino group of the formula: ##STR2## wherein X.sup.1 is hydrogen or lower alkyl, X.sup.2 is hydrogen or an optionally substituted hydrocarbon or heterocyclic radical, and A is a direct link or --0-- or ##STR3## and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted alkyl radical or R.sup.1 and R.sup.2 together form with the nitrogen atom N a 5- or 6-membered nitrogen-containing heterocyclic ring, a process for the manufacture of the said dyestuffs by diazotization and coupling, and the use of the said dyestuffs for coloring synthetic textile materials, in particular aromatic polyester textile materials which they color in violet to green shades possessing excellent fastness to light, to wet treatments and to dry heat treatments.

REFERENCES:
patent: 2683708 (1954-07-01), Dickey et al.
patent: 2805218 (1957-09-01), Towne et al.
patent: 2827450 (1958-03-01), Towne et al.
patent: 3637653 (1972-01-01), Von Brachel et al.
patent: 3639384 (1972-02-01), Weaver et al.
patent: 3639385 (1972-02-01), Weaver et al.
patent: 3640995 (1972-02-01), Weaver et al.

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