| 摘要 |
PURPOSE:To improve the color fastness to the light of a coloring image, by making polyvalent metal salt of aromatic carboxylic acid contain nickel complex series quencher. CONSTITUTION:Though various kinds of aromatic carboxylate can be used as aromatic carboxylic acid, the derivative of salicylic acid is preferable and magnesium, aluminum, calcium, titanium, manganese, zinc, and tin are exemplified as polyvalent metal salt. Zinc is especially preferably used among those. Such a polyvalent metal salt of aromatic carboxylate and nickel complex series quencher are mixed together, or otherwise fused by heating by the compounding ratio of 100pts.wt. in the former to 0.1-20pts.wt., preferably 0.3-10pts.wt. in the latter. |
