甲基丙烯酸二乙氨基乙酯的合成工艺改进

PDF全文下载:  201803003.pdf

文章编号： 16726987（2018）03002104； DOI： 10.16351/j.16726987.2018.03.003

朱凤丽， 隋晓彤， 赵静， 米承敬， 唐林生*

（青岛科技大学 化工学院，山东 青岛 266042）

摘要： 对以甲基丙烯酸甲酯和二乙氨基乙醇为原料，氢氧化锂为催化剂，通过酯交换合成甲基丙烯酸二乙氨基乙酯的改进工艺进行了研究。该工艺以正己烷为携甲醇溶剂，采用分水器从反应体系中不断地分出甲醇。得到较佳反应条件：n(甲基丙烯酸甲酯)∶n(二乙氨基乙醇)∶n(催化剂)=24∶1∶042，反应时间为6 h，反应温度约70 ℃。在以上条件下，目标产物的含量为9496%，收率为9316%。该工艺具有反应条件温和、催化剂廉价易得、产品含量及收率高、设备简单等优点。

关键词： 甲基丙烯酸二乙氨基乙酯； 酯交换； 工艺改进

中图分类号： O 613.5文献标志码： A

引用格式： 朱凤丽， 隋晓彤， 赵静， 等. 甲基丙烯酸二乙氨基乙酯的合成工艺改进\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（3）： 2124.

ZHU Fengli, SUI Xiaotong, ZHAO Jing, et al. Improvement of synthesis process of 2diethylaminoethyl methacrylate\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(3)： 2124.

Improvement of Synthesis Process of 2Diethylaminoethyl MethacrylateZHU Fengli, SUI Xiaotong, ZHAO Jing, MI Chengjing, TANG Linsheng

(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: 2Diethylaminoethyl methacrylate was synthsezied through improved transesterification process by using diethylaminoethanol(DEA) and methyl methacrylate(MMA) as raw materials, LiOH as catalyst where methanol was continuously separated from the reaction system with water separator and nhexane as a methanolcarring agent.The results revealed that the optimum reaction conditions were as follows: n(MMA)∶n(DEA)∶n(LiOH) = 24∶1∶042, reaction time being 6 h, and reation temperature being about 70 ℃. Under the above conditions, the yield of the products could be up to 93%, the purity was close to 95%. The process has some advantages such as mild reaction condition, cheap catalyst, high yield and purity as well as simple equipment.

Key words: 2diethylaminoethyl methacrylate； transesterification； process improvement

收稿日期：  20170314

基金项目： 山东省自然科学基金项目（ZR2015BL025）；山东省教育厅科技计划项目（J16LC21）.

作者简介： 朱凤丽(1991—)，女，硕士研究生.*通信联系人.