Azo dye mixture and their use for dyeing and printing natural and

Abstract

The invention relates to a dye mixture containing a dye of the formula ##STR1## in which R.sub.1 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, C.sub.2-4 alkanoylamino or an unsubstituted or substituted arylsulfonyl, aryloxy or arylcarbonyl radical, R.sub.2 is hydrogen, halogen, an unsubstituted or substituted alkyl, aryloxy or aryloxysulfonyl radical or a radical of the formula ##STR2## R.sub.3 is unsubstituted or substituted alkyl or aryl radical, R.sub.4 is hydrogen or alkyl and R.sub.5 and R.sub.6 independently of one another are hydrogen or an unsubstituted or substituted alkyl, cycloalkyl or aryl radical, and at least one dye of the formula (2) to (5) ##STR3## in which the benzene rings I, II and III can be substituted, ##STR4## in which the benzene rings IV, V and VI can be substituted and R is hydrogen or arylsulfonyl, ##STR5## in which B.sub.1, B.sub.2 and E.sub.1 are hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or C.sub.2-4 hydroxyalkoxy and X is straight-chain or branched C.sub.1-4 alkyl or straight-chain or branched C.sub.2-4 hydroxyalkyl, and ##STR6## in which D.sub.1 is as defined for R.sub.1 in formula (1), D.sub.2 is as defined for R.sub.2 in formula (1) and (D.sub.3).sub.1-3 is 1 to 3 substituents D.sub.3, and D.sub.3 is hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or sulfo.