Diaminopyridine azo dyes having acyloxy radicals substituted on the diaminopyridine

Abstract

Compounds of the general formula ##STR1## where D is a radical of the formula ##STR2## and one of the two radicals L.sup.1 and L.sup.2 is unsubstituted amino and the other the radical ##STR3## where R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy-C.sub.2 -C.sub.4 -alkyl or C.sub.1 -C.sub.8 -acyloxy-C.sub.2 -C.sub.4 -alkyl, R.sup.2 is C.sub.2 -C.sub.10 -alkylene or C.sub.2 -C.sub.10 -alkylene is interrupted by oxygen, T is C.sub.1 -C.sub.8 -alkanoyl which is unsubstituted or is substituted by chlorine or methoxy, B.sup.1 is C.sub.1 -C.sub.4 -alkyl or benzyl or phenyl, which are each unsubstituted or are each substituted by methyl, methoxy or chlorine, B.sup.2 is B.sup.1, hydrogen, halogen, cyano or C.sub.1 -C.sub.5 -alkoxycarbonyl, X.sup.1 is hydrogen, nitro, cyano, C.sub.1 -C.sub.9 -alkoxycarbonyl, C.sub.1 -C.sub.9 -mono- or -dialkylaminocarbonyl, trifluoromethyl, methylsulfonyl or ethylsulfonyl, X.sup.2 is nitro or C.sub.1 -C.sub.5 -alkoxycarbonyl, X.sup.3 is X.sup.2, cyano or formyl, Y is hydrogen, chlorine, bromine, methyl, methoxy or ethoxy and Z is hydrogen, chlorine, bromine, cyano or C.sub.1 -C.sub.9 -alkoxycarbonyl which is unsubstituted or is substituted by C.sub.1 -C.sub.4 -alkoxy, and one or more of the substituents X.sup.1, Y and Z is different from hydrogen, are disclosed. The dyes of the present invention may be used in dyeing synthetic polyester.

Dependencies are inferred from the claim text.