1,6-己二醇二丙烯酸酯的合成 |
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引用本文: | 章书武,孟锐,李晓刚. 1,6-己二醇二丙烯酸酯的合成[J]. 广州化工, 2013, 0(23): 79-81 |
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作者姓名: | 章书武 孟锐 李晓刚 |
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作者单位: | 湖南农业大学植物保护学院,湖南长沙410128 |
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摘 要: | 以1,6~己二醇、丙烯酸为原料,对甲苯磺酸与亚硫酸为催化剂,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。探讨了催化剂、带水剂、反应时间和温度以及酸醇比(丙烯酸/1,6-己二醇,摩尔比)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%,带水剂用量(占原料总质量,%)为65%,反应时间为90min,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%。
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关 键 词: | 1 6-己二醇二丙烯酸酯 1 6-己二醇 丙烯酸 |
Synthesis of 1,6 -Hexanediol Diacrylate |
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Affiliation: | ZHANG Shu - wu , MENG Rui , LI Xiao - gang (Institute of Plant Protection, Hunan Agricultural University, Hunan Changsha 410128, China) |
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Abstract: | Using 1,6 - hexanediol and acrylic acid as raw materials, p - toluenesulfonic acid and sulphurous 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. At the same time, the effects of catalyst, dehyrant, reaction time, reaction temperature and acid- alcohol ratio (acrylic acid/1,6 -hexanediol, molar ratio) were investigated. The optimum synthesis conditions were found acid - alcohol ratio 2.5, mass ratio of catalyst ( catalyst : raw material) 1.5 %, mass ratio of dehydrant (dehydrant : raw material) 65%, reaction time 90 min, and reaction temperature 80 -90 ℃. Under the optimum reaction conditions, the synthesized 1,6 - hexanediol diacrylate was colorless transparent liquid oil with high yield of 93.25 %. |
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Keywords: | 1,6 - hexanediol diacrylate 1,6 - hexanediol acrylic acid |
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