Mixtures of azo dyes for navy blue to black hue.

摘要

Dye mixtures comprising a) an azo dye of the formula I in which Hal is chlorine or bromine, b) the azo dye of the formula II in which L is allyl or may otherwise be hydrogen, and c) an azo dye of the formula III and/or IV in which R<1> is nitro or substituted or unsubstituted C1-C4-alkylsulphonyl, R<2> and R<3> are hydrogen, chlorine or bromine, R<4> and R<5> are hydrogen or chlorine, R<6> and R<7> are hydrogen, phenyl or substituted or unsubstituted C1-C4-alkyl, X<1> is hydrogen, hydroxyl, methoxy, acetylamino or nitro, X<2>, X<3>, X<4> and X<5> are hydrogen, methyl or methoxy, and X<6> is hydroxyl, 2-hydroxyethoxy, formyl or methoxycarbonylamino, dye formulations comprising the new dye mixtures, and the use of the new dye mixtures for dyeing or printing polyesters in textile form.