摘要
以1,6-己二醇、丙烯酸为原料,对甲苯磺酸与亚磷酸为催化剂,环己烷为带水剂,CuSO4/NaHSO4为复合阻聚剂,采用直接酯化法合成1,6-己二醇二丙烯酸酯.对合成产物进行了酸值测定和FT-IR分析.探讨了催化剂、带水剂、阻聚剂、反应时间和温度以及酸醇比(丙烯酸/1,6-己二醇,物质的量之比)对酯化反应的影响.研究结果表明,最佳的酯化反应条件为:丙烯酸/1,6-己二醇为2.5,催化剂用量(占原料总质量,%)为1.5%,阻聚剂用量(占丙烯酸用量,%)为8.5%,带水剂用量(占原料总质量,%)为65%,反应时间为90 min,反应温度为80~90℃.在此条件下,产物为无色透明油状液体,收率可达93.25%.
Using 1,6-hexanediol and acrylic acid as raw material, p-toluenesulfonic acid and phosphorous acid as catalyst, cyclohexane as dehydrant, sodium acid sulfate and copper sulfate as composite inhibitor 1,6-hexanediol diacrylate was synthesized with direct esterification method. Determination of acid value and FT-IR analysis were conducted towards synthetic product. At the same time, the effects of catalyst, dehyrant, inhibitor, reaction time, reaction temperature and acid-alcohol ratio(acrylic acid/1,6-hexanediol, molar ratio) were investigated. The optimum synthesis conditions were found to be as follows: acid-alcohol ratio 2.5; mass ratio of catalyst (catalyst: raw material)1.5%;mass ratio of inhibitor(inhibitor:acrylic acid) 8.5%;mass ratio of dehydrant(dehydrant:raw material) 65%;reaction time 90 mins;reaction temperature 80~90℃. At the optimum reaction conditions, the synthesized 1,6-hexanediol diacrylate was colorless transparent liquid oil with high yield of 93.25%.
出处
《湖南文理学院学报（自然科学版）》
CAS
2014年第3期28-32,共5页
Journal of Hunan University of Arts and Science(Science and Technology)
基金
湖南省高等学校科学研究重点项目(11A053)
长沙市科技攻关专项(K1104013-21)
