摘要
以双三羟甲基丙烷与正辛酸为原料,对甲基苯磺酸为催化剂,采用酸醇酯化法合成了双三羟甲基丙烷正辛酸酯。考察了反应物投料比、反应时间、催化剂用量等对反应的影响。结果证明,最佳反应条件为:酸醇摩尔比4.4∶1,催化剂用量为双三羟甲基丙烷质量的1.0%,带水剂为双三羟甲基丙烷质量的60%,反应温度为120℃,加热回流4 h。在此工艺条件下,产品颜色浅,产率高达97.28%。并用红外光谱、核磁等方法进行了定性分析。
Di-trimethylolpropane （di-tmp） octanoate was prepared by using di-trimethylolpropane and caprylic acid as raw materials and p-toluenesulfonic acid as catalyst. The effect of the reactants feed ratio, reaction time and amount of catalyst on reaction was studied. The results showed that the optimum reaction conditions were as follows：molar ratio of acid to alcohol is 4.4：1 and catalyst amount is 1.0% percent of the di-tmp and toluene is 60% percent of the di-tmp,the reaction temperature is 120 ℃ ,and reflux for 4 h. Under this condition, the yield is un to 97.28%. The product was analysed by IR,NMR.
出处
《应用化工》
CAS
CSCD
2010年第4期526-528,共3页
Applied Chemical Industry
基金
吉林省科技厅重点项目(20080308)
关键词
双三羟甲基丙烷正辛酸酯
酯化
合成
di-trimethylolpropane octanoate
esterification
synthesis
