BigPatents India

A dye mixture comprises (A) at least one monoazo dye of formula (I) wherein XA is C1, Br, I, CN or NO2; RA is C1-4alkyl or NHCOQ, where Q is C1-4alkyl; and each of RA¹ and RA², independently, is C1-4alkyl, C2-4alkenyl, C1-4alkoxy-C1-4alkyl, aryl-C1-4 alkyl or aryloxy-C1-4alkyl; and (B) at least one pyrroline type dye of formula (II) wherein R¹ is H, C1-20alkyl or C2-20alkenyl; and D is aryl.