Patent ID: 7052521
Filing Date: 2006-05-30
Classification: C09B,Y10S

Abstract:
1. A dye composition comprising: (a) a monoazo dye of the formula (I): 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 rings having 0 to 3 substituent groups, said substituent groups are selected from the groups consisting of halogen, C 1-4 alkyl, C 1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid and sulfo group; Y is —CH═CH 2 , —CH 2 CH 2 Cl or —CH 2 CH 2 OSO 3 H; and (b) a disazo dye of the formula (II): wherein R is hydrogen, sulfo, C 1-4 alkyl or C 1-4 alkoxyl; R 2 and R 3 independently is hydrogen, halogen, C 1-4 alkyl or C 1-4 alkoxyl; R 4 is C 1-4 alkyl or —NH 2 ; Y is —CH═CH 2 , —CH 2 CH 2 Cl, or —CH 2 CH 2 OSO 3 H; D is a group having following formulas: wherein m is an integer of 1, 2 or 3; n is an integer of 1 or 2.