Patent ID: 7387647

Claim:
A dye composition comprising: (A) At least one disazo dye selected from the formula (I) or (II) present in an amount ranging from 1% to 99% by weight, wherein R is hydrogen or carboxyl; R 1 and R 2 are each independently of one another denote hydrogen or C 1˜4 alkyl; D 1 and D 2 are each independently can be any group selected from the formulas (1a), (1b), (1c), (1d) or (1e) below wherein (R 3 ) 0˜3 and (R 4 ) 0˜3 are each independently of one another 0 to 3 identical or different radicals selected from the group consisting of halogen, carboxyl, sulfo, C 1-4 alkyl and C 1-4 alkoxyl; R 5 is hydrogen or C 1-4 alkyl which is unsubstituted or substituted by hydroxyl, sulfo, carboxyl or cyano; (R 6 ) 0˜2 is 0 to 2 identical or different radicals selected from the group consisting of sulfo, C 1-4 alkyl and C 1-4 alkoxyl; R 7 is hydrogen, sulfo, C 1-4 alkyl or C 1-4 alkoxyl; R 8 is hydrogen, ureido, sulfo, C 1-4 alkyl, C 1-4 alkoxyl or C 2-4 alkanoylamino; V is a amino which is unsubstituted or substituted by non-fiber-reactive radicals; Q and Q′ are each independently of one another denotes —NH—CO—CH(Hal)-CH 2 (Hal), —NH—CO—C(Hal)═CH 2 or —SO 2 —Y; Y is —CH═CH 2 , —CH 2 CH 2 OSO 3 H or —CH 2 CH 2 —U; U is a group which can be eliminated under alkaline conditions; Hal is halogen; m is an integer of 0 or 1; and (B) A disazo dye of formula (III) present in an amount ranging from 99% to 1% by weight, wherein (R 9 ) 0˜2 and (R 10 ) 0˜2 are each independently of one another 0 to 2 identical or different radicals selected from the group consisting of sulfo, C 1-4 alkyl and C 1-4 alkoxyl; Q 1 and Q 2 are independently of one another denotes -NH-CO-CH(Hal)-CH 2 (Hal), -NH-CO-C(Hal)═CH 2 or —SO 2 —Y; Y is —CH═CH 2 , —CH 2 CH 2 OSO 3 H or —CH 2 CH 2 —U; U is a group which can be eliminated under alkaline conditions; Hal is Halogen.