Azo dyes containing thienothiophene radicals as radicals of the diazo component

US4843153A · kind A · utility

Assignee

• BASF SE

Inventors

• Heinz Eilingsfeld · Bischofswerda, DE
• Karl-Heinz Etzbach · Bischofswerda, DE
• Guenter Hansen · Ludwigshafen, DE
• Helmut Reichelt · Neustadt, DE

Key dates

• Filing date: Jul 1, 1987
• Grant date: Jun 27, 1989
• Expiry date: Jul 1, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/0059
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Thienothiophene dyes of the formula ##STR1## wherein Z is carboxylate, acyl, carboxyl, substituted or unsubstituted carbamoyl, cyano or nitro, X is hydrogen, fluorine, chlorine, bromine, Z or a group of the formula ##STR2## T.sup.1 and T.sup.2 are identical or different and each is independently of the other cyano, substituted or unsubstituted alkoxycarbonyl, alkenyloxycarbonyl, carbamoyl or alkylcarbamoyl and W is hydrogen, methyl or ethyl, Y is hydrogen, chlorine or bromine and K is the radical of a coupling component, are highly suitable for dyeing synthetic fibers, in particular polyesters wherein the dyeing obtained have good fastness properties.