Disazo dyes of which the coupling components are from the hydroxysulphonylnaphthaline series.

摘要

Disazo dyes suitable for preparing inks have the formula (I) where m is 1 or 2, n is 0 or 1, Z1 is hydrogen or substituted or unsubstituted C1-C4-alkyl, Z2 is hydrogen, substituted or unsubstituted C1-C4-alkyl, C1-C4-alkanoyl, substituted or unsubstituted benzoyl, C1-C4-alkylsulfonyl, substituted or unsubstituted phenylsulfonyl or a derivatized 1,3,5-triazinyl radical, and D is the radical of a diazo component of the class of the thiazole, thiophene, aminobenzoic acid or phenylenediamine compounds.