紫外线吸收剂2,4—二羟基二苯甲酮的合成和脱色(Ⅱ)  

The Synthesis and the Decoloration of a Ultraviolet Absorber,2,4—Dihydroxybenzophenone—method

作　　者：朱绪恩[1] 周海平[1] 

机构地区：[1]西北大学化工系,西安太白路1号710069

出　　处：《西北大学学报（自然科学版）》1993年第1期31-38,共8页Journal of Northwest University（Natural Science Edition）

摘　　要：详细讨论了紫外线吸收剂2,4—二羟基二苯甲酮的合成和脱色方法。用间苯二酚和α,α,α—三氯甲苯在水和低级脂肪醇组成的混合溶剂中反应合成2,4—二羟基二苯甲酮,可得颜色较浅的产品,再用化学方法对其进行脱色,则得颜色浅且色泽稳定性好的产品。通过实验确定了上述合成和脱色方法的最佳工艺条件。Synthetic and decolorizing methods of an ultraviolet absorber 2,4—dihydroxybenzophenone is discussed in detail. Lighter 2,4—dihydroxybenzophenone in color can be synthesized by the reaction of resorcinol with benzotrichloride in a mixture of water and a low molecular weight aliphatic alcohol. Then it can be decolorized by using chemical method. Thus, the light—colored product is obtained and the color retention is high, Through experiments, the best technological condition of the synthetic and decolorizing method talking above obtained.

关 键 词：紫外线吸收剂 合成 羟基苯甲酮 

分 类 号：O625.42[理学—有机化学]