Disperse dye composition useful for dyeing of printing hydrophobic fiber materials: mixture of pyridone mono-azo dyes and optionally a quino-phthalone

摘要

A disperse dye composition comprising (a) a pyridone monoazo compound of the formula (I), (I) wherein X1 and X2 are each hydrogen, halogen, alkyl, alkoxy or others, and R1 is alkyl, alkenyl, cycloalkyl, phenyl or anilino, and (b) a pyridone monoazo compound of the formula (II). (II) wherein X3 and X4 are each hydrogen, halogen, alkyl, alkoxy or others, and R2 is alkyl, alkenyl, cycloalkyl, phenyl or anilino, optionally together with (c) a quinophthalone compound of the formula (III), wherein Y is hydrogen or bromine, and the ring A is unsubstituted or substituted benzene or naphthalene ring, which is useful as a yellow dye component for dyeing or printing hydrophobic fiber materials with superior dye bath stability and level dyeing property.