Mixtures of copper phthalocyanine and copper-containing azo dyes, their production and use

摘要

The invention relates to mixtures comprising one or more phthalocyanine dyes of formula I I wherein CuPc is the radical of a Cu-phthalocyanine dye, A is selected from the group consisting of optionally substituted, linear or branched C2-C6-alkylene groups, R1 and R2 independently of one another, are selected from the group consisting of hydrogen or optionally substituted, linear or branched C1-C6-alkyl, M is selected from the group consisting of hydrogen, lithium, sodium, potassium, ammonium or substituted ammonium, x and y is 1 to 3, with the provision that the sum of x+y is 3 to 4, and; one or more azo dyes of formula II: (II) +TR wherein R3 is selected from the group consisting of hydrogen, methyl or methoxy M independently of each other, has one of the meanings given in formula I, a is 1 or 2, and b is 0 or 1, n is 1 or 2, and m is 0 or 1, with the provision that when n equals 1, m equals 1, and when n equals 2, m equals 0, and stable, salt-free or low-in-salt formulations of such dyestuff mixtures, production processes thereof and use thereof.