乙二醇单乙醚醋酸酯的合成工艺改进研究  

Study on improvement of preparation of ethyleneglycol monoethylether acetate

作　　者：朱驯[1] 

机构地区：[1]盐城纺织职业技术学院化工系,江苏盐城224005

出　　处：《应用化工》2006年第4期298-299,312,共3页Applied Chemical Industry

摘　　要：介绍了以乙二醇单乙醚和醋酸为原料，对甲苯磺酸为催化剂合成乙二醇单乙醚醋酸酯的改进工艺。探讨了催化剂、溶剂、反应温度、物料比这几个因素对反应产率的影响。结果表明，最佳反应条件：催化剂对甲苯磺酸：乙二醇单乙醚=1：25（摩尔比），溶剂为甲苯，乙二醇单乙醚：醋酸=1：1．2（摩尔比），最佳反应温度为150～165℃，反应时间为3h，采用套用工艺最终得产率95．1％。该工艺步骤简单，生产设备投资低，具有较强的技术优势，易于工业化。In this paper, we took ethyleneglycol monoethylether and acetate as the raw material to synthesize ethyleneglycol monoethylether acetate with the catalyst of toluene-p-sulfonic acid. The effect of catalyst, solvent, reaction temperature, the mole ratio of materials on yield were discussed. We could receive the best reaction condition： the catalyst is toluene-p-sulfonic acid that the ratio is 1 ： 25 （ paratoluenesulfonic acid： ethyleneglycol monoethylether） ,the solvent is toluene ,the temperature is 150- 165℃ ,the reaction time is 3 -4 h , and the ratio of raw materials is 1： 1.2. After using indiscriminately, the yield is 95.1%. The new technology has strong technical superiority, such as simpler process, less investment, and so on.

关 键 词：乙二醇乙醚乙酸酯 合成 工艺改进 

分 类 号：TQ413.2[化学工程]