Patent ID: 7544217
Filing Date: 2009-06-09
Classification: C09B,D06P

Abstract:
1. A dye mixture comprising (A) from 20 to 80% by weight of one or more compounds of formula (1) wherein R 1 is C 1 -C 12 alkyl, or C 2 -C 12 alkyl interrupted by one or more oxygen atoms and/or —COO— groups and R 2 , R 3 , R 4 and R 5 , each independently of the others, is hydrogen, C 1 -C 12 alkyl, chlorine, bromine, hydroxy or amino and (B) from 20 to 80% by weight of at least one compound of formulae (2)-(12) wherein R 6 is C 1 -C 12 alkyl, or C 2 -C 12 alkyl interrupted by one or more oxygen atoms and/or —COO— groups and R 7 , R 8 , R 9 and R 10 , each independently of the others, is hydrogen, C 1 -C 12 alkyl, chlorine, bromine, hydroxy or amino, with the proviso that the radical R 6 in formula (2) is different from the radical R 1 in formula (1), X is the radical of a coupling component from the benzene, indene or carbazole series, R R R R R R R Y is the radical of a diazo component of the benzene, naphthalene, diphenyl, azobenzene, thiophene, benzothiazole, benzisothiazole, thiadiazole, indazole, benzotriazole, pyrazole, chromone, phthalimide or diphenylene oxide series, R R R R R R