一锅法制备甲基丙烯酸缩水甘油酯

发布时间：2018-02-27 14:54

  本文关键词： 甲基丙烯酸缩水甘油酯 相转移催化 环氧氯丙烷 一锅　出处：《精细石油化工》2017年05期 　论文类型：期刊论文

【摘要】：在过量环氧氯丙烷中,以季铵盐为催化剂,在阻聚剂存在的条件下,采用二氯甲烷共沸脱水,相转移催化一锅法制备了甲基丙烯酸缩水甘油酯。考察了反应时间,反应温度,催化剂种类等不同条件对产物收率的影响。结果表明,较佳的反应条件是:催化剂采用四丁基氯化铵,阻聚剂用量为甲基丙烯酸的1%,环氧氯丙烷用量为甲基丙烯酸的600%,反应温度80~85℃,反应时间3h。在此条件下,产物GC纯度大于98.5%,收率大于89%。
[Abstract]:Glycidyl methacrylate was prepared by using dichloromethane azeotropic dehydration in the presence of polymerization inhibitor and quaternary ammonium salt in excess epichlorohydrin. The results showed that the optimum reaction conditions were as follows: tetra#china_person0# ammonium chloride was used as catalyst, The amount of polymerization inhibitor is 1% of methacrylic acid, the amount of epichlorohydrin is 600% of methacrylic acid, the reaction temperature is 80 鈩，

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