生物基弹性体中间体衣康酸二异戊酯的合成研究  

Research on the synthesis of bio-based elastomer intermediate di-isopentyl itaconate

作　　者：李丽[1] 

机构地区：[1]菏泽学院化学化工系,山东菏泽274015

出　　处：《热固性树脂》2015年第3期21-24,共4页Thermosetting Resin

基　　金：国家自然科学基金(21105023)资助

摘　　要：以衣康酸和异戊醇为原料,浓硫酸为催化剂,环己烷为带水剂,通过酯化反应合成了生物基弹性体中间体衣康酸二异戊酯。通过酯化率测定研究了醇、酸物质的量比,催化剂用量,反应温度及反应时间等对合成的影响。结果表明,最佳合成反应条件为:n(衣康酸)∶n(异戊醇)=1∶4,催化剂用量为衣康酸质量的1.54%,120℃下反应3 h后产物由红外光谱仪和核共振波谱仪分析证明生成了较纯净的衣康酸二异戊酯,产率在98%以上。The di-isopentyl itaconate was synthesized by esterification using itaconic acid and isoamyl alcohol as materials,concentrated sulfuric acid as catalyst and cyclohexane as water carrying agent. The effects of mole ratio of alcohol to acid,catalyst dosage,reaction temperature and reaction time on the synthesis were investigated by the determination of esterification rate. The results showed that the best synthesis conditions were as followed:n(itaconic acid)∶ n(isoamyl alcohol)= 1 ∶ 4,catalyst amount 1.54% based on the itaconic acid quality and reaction time 3 h at 120 ℃. The products were analyzed by the infrared spectroscopy and nuclear resonance spectrometer and the results showed the more pure itaconic di-isoamyl itaconates were generated and the yields were over 98%.

关 键 词：衣康酸二异戊酯 衣康酸 异戊醇 酯化反应 

分 类 号：TQ225.24[化学工程—有机化工]