Mixtures of azo dyes for navy to black hues

摘要

Dye mixtures contain a) one or more azo dyes of the formula I (I) where Y1 is hydrogen, C1-C6-alkyl, C1-C4-alkoxy or unsubstituted or substituted C1-C8-alkanoylamino or C3- or C4-alkenylamino or Y2 and Y3 are each hydrogen or unsubstituted or substituted C1-C6-alkyl b) the azo dye of the formula II (II) where L is allyl which may be partially replaced by or may furthermore be hydrogen and c) optionally, an azo dye of the formula III and/or IV as described in the specification.