Dyes containing 3,4-disubstituted-2-diaza-thiophene radicals

US4952681A · kind A · utility

Assignee

• Sandoz AG · CH

Inventors

• Guenter Hansen · Ludwigshafen, DE
• Ernst Schefczik
• Karl-Heinz Etzbach · Bischofswerda, DE
• Helmut Reichelt · Neustadt, DE
• Hermann Loeffler · Speyer, DE

Key dates

• Filing date: Jul 27, 1988
• Grant date: Aug 28, 1990
• Expiry date: Jul 27, 2008

Classification

• Technology area (CPC —): General

Abstract

Compounds of the formula I ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are disclosed. They are useful for dyeing synthetic fibers or plastics.