Patent ID: 7704286

Claim:
A dye composition comprising: (a) a mono azo dye of the following formula (I) present in an amount ranging from 1% to 99% by weight relative to total weight of the composition, wherein R is hydrogen, sulfo, C 1-4 alkyl or C 1-4 alkoxyl; R 1 is —CH 3 or —COOH; K is phenyl or naphthyl ring having 0 to 3 substituent groups, said substituent groups are selected from halogen, C 1-4 alkyl, C 1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid, sulfo and —SO 2 —Y; Y is —CH═CH 2 , —CH 2 CH 2 Cl or —CH 2 CH 2 OSO 3 H; m is 2; and (b) at least one azo dye selected from the group consisting of the following formula (II), (III) and (IV) present in an amount ranging from 1% to 99% by weight relative to total weight of the composition, wherein R is hydrogen, sulfo, C 1-4 alkyl or C 1-4 alkoxyl; R 2 is hydrogen, C 1-4 alkyl sulfo or C 1-4 carboxylic acid; R 3 is hydrogen or carboxyl; Y is —CH═CH 2 , —CH 2 CH 2 Cl or —CH 2 CH 2 OSO 3 H; (W) 0˜3 is 0 to 3 the same or different groups selected from the group consisting of sulfo, C 1-4 alkyl and C 1-4 alkoxyl; (W′) 0˜3 is 0 to 3 the same or different groups selected from the group consisting of sulfo, C 1-4 alkyl and C 1-4 alkoxyl; D is the following group wherein n is 1, 2 or 3; o is 1 or 2; and D 1 and D 2 are independently of one another the following group of formula (VI): wherein (R 4 ) 0˜3 is 0 to 3 the same or different groups selected from the group consisting of halogen, carboxyl, sulfo, C 1-4 alkyl and C 1-4 alkoxyl; Y 1 is —CH═CH 2 , —CH 2 CH 2 Cl or —CH 2 CH 2 OSO 3 H.