Cyanopyridine-Based Azo Dyes

摘要

A composition containing (A) an alkali-soluble binder and (B) an azo dye of formula (1), wherein D is the radical of a diazo component of the benzene, naphthalene, diphenyl, azobenzene, thiophene, benzothiazole, benzisothiazole, thiadiazole, indazole, benzotriazole, pyrazole, anthraquinone, naphtholic acid imide, chromone, phthalimide or diphenylene oxide series, X and Y are each independently of the other C₂-C₆alkylene, n is a number from 1 to 10, Z denotes oxygen or sulphur, and R₁ is -X[-O-Y]_n-ZH, wherein X, Y, Z and n are as defined above, C₁-C₁₂alkyl which may be unsubstituted or substituted by one or more halogen atoms, hydroxy groups, amino groups or C₁-C₈alkoxy groups, C₅-C₂₄aryl which may be unsubstituted or substituted by one or more halogen atoms, hydroxy groups, amino groups, C₁-C₁₂alkyl groups or C₁-C₈alkoxy groups, C₆-C₃₀aralkyl which may be unsubstituted or substituted by one or more halogen atoms, hydroxy groups, amino groups, C₁-C₁₂alkyl groups or C₁-C₈alkoxy groups, or a C₅-C₂₄cycloaliphatic group which may be unsubstituted or substituted by one or more halogen atoms, hydroxy groups, amino groups, C₁-C₁₂alkyl groups or C₁-C₈alkoxy groups, is useful for the production of colour filters for liquid crystal displays, flat-panel displays, colour image pickup tubes, colour-copying machines etc.