| 摘要 |
PURPOSE:The titled composition that contains colorants of specific monoazopyrazolone derivative, biphenyldisazopyrazolene derivative, thus showing good color tone as a yellow color and high solubility and causing no clogging of nozzles or the like. CONSTITUTION:The objective composition is made by using 1-5wt% of a colorant selected from monoazopyrazolene derivatives of formulaI(A1 is hydroxyl; A2-6 are H, hydroxyl, methyl, amino, sulfone, carboxyl; D1-4 are benzene or naph-thalene ring which may be substituted with amino, sulfone or carboxyl groups; hydroxyl and carboxyl may be their salts of sodium or potassium and sulfone may be its sodium salt) and biphenyldisazopyrazolone derivatives of formula II, preferably 3-7pts.wt. per 1pt. of the colorant, of a humectant such as ethylene glycol, 0.1-5pts. of a solubilizer such as 2-pyrrolidone, 0.1-3pts. of a pH regulator and an aqueous medium; |
