Dyes containing thiophene radicals

US5352774A · 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: Sep 23, 1993
• Grant date: Oct 4, 1994
• Expiry date: Sep 23, 2013

Classification

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

Abstract

The compounds of the general 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 very useful for dyeing synthetic fibers or plastics.