丙烯酸羟乙酯基羟氯丙基顺丁烯二酸酯的合成

合成了1种新型单体丙烯酸羟乙酯基羟氯丙基顺丁烯二酸酯,它是1种含羟基的单丙烯酸酯,主要指标为:酸值(KOH)<10 mg/g,环氧值≤0.01当量/100 g,黏度20 mPa.s(25℃),该化合物可用作UV涂料的活性稀释剂以及用于不饱和聚酯的稀释剂。通过实验得到了如下工艺条件:实验的反应物配比n(顺丁烯二酸酐)∶n(羟乙酯)∶n(环氧氯丙烷)=1∶1.02∶1.07;第1步催化剂对甲苯磺酸的用量为羟乙酯和顺酐量的0.3%;第2步催化剂二甲基咪唑的用量为总投料量的0.15%;第1步反应时间为0.5 h,反应温度为85~90℃;第2步反应时间为2~2.5 h,反应温度为120℃。

Synthesis of 2-hydroxyethyl acrylate 2′-Hydroxy-3′-chloride-propyl maleate

It was a process for the synthesize of hydroxyethyl acrylate hydroxy-chloride propyl maleate.It was a kind of hydroxy monoacrylic ester and the main factors were as follow: acid number<10 mg KOH/g,the(epoxy value)≤0.01 Eq/100 g,the viscosity was 20 mPa·s(25 ℃).It could be used as active thinner of UV curing coatings and thinner for unsaturated polyester.The molar rate of maleic anhydride to 2-hydroxyethyl acrylate and epichlorohydrin was 1∶1.02∶1.07.The quantity of toluene-p-sulfonic acid,catalyst used in the first step was 0.3% of that of the 2-hydroxyethyl acrylate and epichlorohydrin and the reaction need 0.5 h at the temperature of 85～90 ℃,the quantity of 2-methyl-imidazole catalyst used in the second step was 0.15% of all that of reactants and the reaction need 2～2.5 h at the temperature of 120 ℃.