Dyes containing thiophene radicals

A compound of the formula:

• ##STR534## wherein X is fluorine, chlorine or bromine;
• Y is cyano;
• T is hydrogen;
• C.sub.1 -C.sub.4 -alkyl;
• Cl;
• Br;
• NO;
• NO.sub.2 ;
• SO.sub.3 H;
• CHO;
• CN;
• CH.sub.3 CO;
• C.sub.2 H.sub.5 CO;
• C.sub.6 H.sub.5 CO;
• CH.sub.3 SO.sub.2 ;
• C.sub.2 H.sub.5 SO.sub.2 ;
• C.sub.6 H.sub.5 SO.sub.2 ;
• or --CH.dbd.B;
• B is C(CN) (Z) where Z is cyano;
• nitro;
• alkanoyl;
• aroyl;
• alkylsulfonyl;
• arylsulfonyl;
• carboxyl;
• a carboxylic ester group;
• unsubstituted carbamyl;
• substituted carbamyl;
• or a radical of a compound of one of the formulae:
• ##STR535## and K is a radical derived from a coupling component of the formula:
• ##STR536## wherein:
• B.sup.1 is hydrogen or B.sup.2 ;
• B.sup.2 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkyl substituted by chlorine, bromine, hydroxyl, C.sub.1 -C.sub.8 -alkoxy, phenoxy, phenyl, cyano, carboxyl, C.sub.1 -C.sub.8 -alkanoyloxy, C.sub.1 -C.sub.8 -alkoxy-C.sub.1 -C.sub.4 -alkoxy, benzoyloxy, o-, m- or p-methylbenzoyloxy, o-, m- or p-chlorobenzoyloxy, C.sub.1 -C.sub.8 -alkoxyalkanoyloxy, phenoxyalkanoyloxy, C.sub.1 -C.sub.8 -alkoxycarbonyloxy, C.sub.1 -C.sub.8 -alkoxyalkoxycarbonyloxy, benzyloxycarbonyloxy, phenethoxycarbonyloxy, phenoxyethoxycarbonyloxy, C.sub.1 -C.sub.8 -alkylaminocarbonyloxy, cyclohexylaminocarbonyloxy, phenylaminocarbonyloxy, C.sub.1 -C.sub.8 -alkoxycarbonyl, C.sub.1 -C.sub.8 -alkoxyalkoxycarbonyl, phenoxycarbonyl, benzyloxycarbonyl, phenoxy-C.sub.1 -C.sub.4 -alkoxy, phenylethoxycarbonyl, phenyl, or cyclohexyl;
• and R.sup.6 is cyano;
• carbamyl;
• nitro;
• acetyl;
• alkoxycarbonyl;
• methylaminocarbonyl;
• dimethylaminocarbonyl;
• ethylaminocarbonyl;
• diethylaminocarbonyl;
• methoxyethoxycarbonyl;
• ethoxyethoxycarbonyl;
• n-propoxyethoxycarbonyl;
• isopropoxyethoxycarbonyl;
• n-butoxyethoxycarbonyl;
• isobutoxyethoxycarbonyl;
• or sec.-butoxyethoxycarbonyl.