新型苯甲酰甲酸酯光引发剂的合成及其性能

以苯甲酰甲酸和二缩三乙二醇为原料，经酯化反应合成了一种新型的光引发剂苯甲酰甲酸二缩三乙二酯(2)，其结构和性能经¹H NMR， ¹³C NMR， FT-IR， HR-MS，元素分析和TG表征。紫外光谱分析显示2的最大吸收峰位于251.1 nm和298.8 nm。2能有效引发含双键的聚氨酯丙烯酸酯与单体的光聚合反应，光固化时间小于1 min，固化膜性能良好。

Synthesis and Properties of A New Phenylglyoxylic Acid Ester Photoinitiator

A novel photoinitiator, diphenylglyoxylic acid triethylene glycol ester(2), was synthesized by esterification of phenylglyoxylic acid with triethylene glycol. The structure and properties were char-acterized by 1 H NMR, 13 C NMR, FT-IR, HR-MS, elemental analysis and TG. The maximum ultravio-let absorption peak of 2 locate at 251. 1 nm and 298. 8 nm. 2 can initiate the polymerization reaction of polyurethane acrylate and the monomer effectively. The photo curable time was less than 1 min and the properties of films were good.