| 摘要 |
PURPOSE:To stabilize an org. base body material having absorption max. in a specific wavelength region to light by allowing said org. base body material and at least one kind of the complex expressed by the specific formulas to co-exist. CONSTITUTION:The org. base body material having absorption at about 300-1,500nm and at least one kind of the compd. expressed by the formula I or formula II are made to co-exist, by which the stability of the org. base body material, more particularly coloring matter or dye to light is improved without deteriorating the hue and purity thereof. Inorg. cations among the cations expressed by [Cat1] or [Cat2] in the compd. expressed by the formula I and formula II are exemplified by an alkali metal, alkaline earth metal or NH4<+> and the org. cations are exemplified by quaternary ammonium ions or quaternary phosphonium ions. The org. base body material includes the dyes belonging to the calssification by dyeable nature and the most preferable dye includes an anthraquinone, naphthoquinone, etc.
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