Patent ID: 6682573
Filing Date: 2004-01-27
Classification: C09B,Y10S

Abstract:
Dye mixture comprising at least(1) (A) at least one azo dye of the formula (I) â€ƒwherein each of X and X1 independently is chlorine or bromine; R1 is absent; and R2 is n-butyl or cyanoethyl and R3 is cyanoethyl; and (B) at least one azo dye of the formula (II) â€ƒwherein X2 is absent or is chlorine or bromine; each of R4 and R5 independently is hydrogen, C1-4 alkyl, allyl or acyloxyalkyl R6 is C1-4 alkyl or NHCOY, in which Y is hydrogen, C1-4 alkyl, or NH2 and R7 is C1-4 alkoxy; and at least when in the formula (II), X2 is bromine, R6 is NHCOY (in which Y is methyl), R7 is methoxy and each of R4 and R5 is allyl or one of R4 and R5 is allyl and the other is hydrogen (C) at least one azo dye of the formula (III) â€ƒwherein X3 is absent or is chlorine or bromine; R8 is C1-4 alkyl or NHCOY, in which Y is hydrogen, C1-4 alkyl or NH2; find each of R9 and R10 independently is hydrogen, C1-4 alkyl; allyl or acyloxyalkyl or (2) (A) at least one azo dye of the formula (I); given and defined above, and (D) at least one azo dye of the formula (IV) â€ƒwherein R11 is absent or is C1-4 alkyl; R12 is hydrogen, cyano, hydroxyl, OCOR14 or OCOOR14 in which R14 is C1-4 alkyl, aryl or aralkyl; R13 is hydroxyl, OCOR14 in which R14 is as defined above; and each of m and n independently is 1, 2, 3 or 4.