双酚A双甲基丙烯酸缩水甘油酯的合成与表征

Synthesis and Characterization of Bisphenol A-glycidyl Methacrylate

以N，N-二甲基对甲苯胺（DMPT）为催化剂，双酚A和甲基丙烯酸缩水甘油酯（GMA）为原料合成了一种常用的口腔修复材料树脂基质——双酚A双甲基丙烯酸缩水甘油酯（Bis-GMA），并用FTR．^1HNMR和质谱对其结构进行表征。通过FTR对反应过程进行监控，研究了环氧基的转化率随反应时间的关系和催化剂的用量对反应的影响。实验结果表明，当反应温度为60℃，双酚A与GMA物质的量比为1：2．1，DMPT的用量为1％-3．5％时，Bis-CMA的产率为30％-40％，增加DMPT的用量能明显缩短反应所需时间。

Using N, N＇ - dimethy - p - toluidine （DMPT） as the catalyst, bisphenol A - glycidyl methacrylate （ Bis - GMA）, the resin matrix in most dental composite restorative materials, was synthesized by the reaction of bisphenol A and glycidyl methacrylate（GMA）,and characterized by FTR,^1HNMR and M S.The course of reaction was monitored by FT- IR, the degree of epoxide conversion and the effect of the concentration of the catalyst on the reaction was studied. When the reaction temperature was 60℃, the molar ratio of bisphenol A to GMA was 1：2.1, the concentration of DMFI was 1% -3.5 %, the yield of Bis-GMA was 30 % - 40 %. Increasing the concentration of DMPT can obviously decrease the reaction time.