Patent ID: 7381256

Claim:
A dye mixture which comprises at least one dye of the general formula (I) and at least one dye of the general formula (II) in which D 1 and D 2 independently of one another are the radical of benzene or of naphthalene; m and n independently of one another are the number 1, 2 or 3; W 1 and W 2 independently of one another are (C 1 -C 4 )-alkylene, (C 3 -C 6 )-alkylene which is interrupted by 1 or 2 hetero-groups from the group of formulae —0— and —NH—, or are a group alk-phen, phen-alk or phen, in which alk is methylene, ethylene or n-propylene and phen is phenylene or phenylene substituted by 1 or 2 substituents from the group sulfo, (C 1 -C 4 )-alkyl and (C 1 -C 4 )-alkoxy; Y 1 and Y 2 independently of one another are vinyl or ethyl substituted in β position by an alkali-eliminable substituent; R 1 and R 4 independently of one another are hydrogen, (C 1 -C 4 )-alkyl and (C 1 -C 4 )-alkoxy or sulfo; R 2 and R 5 independently of one another are amino, (C 1 -C 4 )-alkyl or (C 1 -C 4 )-alkyl substituted by carboxyl, sulfo or a group —SO 2 —Y 3 in which Y 3 has one of the definitions stated for Y 1 ; R 3 and R 6 independently of one another are hydrogen, (C 1 -C 4 )-alkyl phenyl or phenyl substituted by 1 or 2 substituents from the group sulfo, (C 1 -C 4 )-alkyl and (C 1 -C 4 )-alkoxy; and M is hydrogen, an alkali metal or the equivalent of an alkaline earth metal.