新型多元醇丙烯酸酯的合成研究

Research on the Synthesis of Ditrimethylolpropane Tetraacrylate(Di-TMPTA)

用直接酯化法,以双三羟甲基丙烷和丙烯酸为原料合成双三羟甲基丙烷丙烯酸酯,初步考察了溶剂用量,原料配比,催化剂的组成及用量,阻聚剂的组成及用量等因素对产品酯化率的影响。结果表明,最适宜的条件为:酸醇物质的量比为4.5∶1,对甲苯磺酸作催化剂用量为5%,对苯二酚作阻聚剂用量为1%,反应温度在85℃左右,反应时间在6h,酯化率可达90%以上。用红外光谱、高效液相色谱及质谱对产物进行定性定量。

Di-TMPTA was synthesized from di-TMP and acrylic acid by direct esterification method.The influence of reaction conditions,such as the ratio of acrylic to di-TMP,the amount of solvent,the component and concentration of the catalyst,and the component and concentration of the polymerization inhibitor,was studied.The results indicated that the most suitable conditions were as follows：the mole ratio of a crylic acid to di-TMP was 4.5∶1,5% toluene-p-sulfonic acid was used as the catalyst,1% hydroquinone was used as the polymerization inhibitor,the reaction temperature was about 85℃,and the reaction time was above 6hwas used.The esterification reaction rate was above 90%.The product was qualitatively and quantitatively analysed by IR,HPLC and GC-MC.