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本工作以苯甲酰甲酸(BF)和2-羟基-2-甲基-对羟乙基醚基苯基丙酮(2959)为原料,通过酯化反应合成了一种光引发剂BF-2959,采用紫外、红外、核磁共振、元素分析等手段对其进行了表征。研究了光引发剂BF-2959的合成条件,得到最佳实验条件:以甲苯为溶剂,反应时间6h,反应温度105℃,以甲烷磺酸为催化剂,苯甲酰甲酸与2959的物质的量投料比为1∶1.1,产率为92.1%;产物为无色透明液体,与树脂的相容性较好,紫外最大吸收峰在246.1nm处。在涂膜光固化测试中,用4%的BF-2959引发B-206聚氨脂和TMPTA单体聚合,转化率为93%。
In this work, a photoinitiator BF-2959 was synthesized by esterification using benzoylformic acid (BF) and 2-hydroxy-2-methyl-p-hydroxyethyl ether phenylpropone (2959) It was characterized by UV, IR, NMR and elemental analysis. The synthesis conditions of photoinitiator BF-2959 were studied. The optimum conditions were as follows: toluene as solvent, reaction time 6h, reaction temperature 105 ℃, methane sulfonic acid as catalyst, Ratio of 1: 1.1, the yield was 92.1%; the product was a colorless and transparent liquid with good compatibility with the resin, the maximum UV absorption peak at 246.1nm Department. In the coating light curing test, B-206 polyurethane and TMPTA monomer were polymerized with 4% BF-2959, with a conversion of 93%.