Heterocyclic azo dyes containing cyanothiophene derivatives as d

Details Heterocyclic azo dyes containing cyanothiophene derivatives as d Heterocyclic azo dyes containing cyanothiophene derivatives as d

1989-03-16

1990-10-23

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534573, C09B 2942, C09B 29033, D06P 118, D06P 354

Patent

active

049653466

ABSTRACT:
The novel dyes of the general formula I ##STR1## where X is hydrogen or C.sub.1-C.sub.4 -alkyl or is phenyl which is unsubstituted or substituted by fluorine, chlorine, bromine, methyl, methoxy or nitro, Y is cyano, a carboxylic ester group or nitro, Z is cyano, acetyl, benzoyl or unsubstituted or substituted carbamyl, or X and Z or Y and Z may simultaneously be a carboxylic ester group, and R.sup.1 and R.sup.2 independently of one another are each hydrogen or unsubstituted or substituted alkyl or aryl, are very useful for dyeing polyesters, polyester/cellulose blends or thermoplastics.

REFERENCES:
patent: 3998802 (1976-12-01), Dehnert et al.
patent: 4042578 (1977-08-01), Dehnert et al.

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