钛络合物均相催化合成聚六氢苯酐二甘醇酯

化工进展

钛络合物均相催化合成聚六氢苯酐二甘醇酯

蒋平平1，2，沈敏亮1，董玉明1，张晓鸣2，冯骉2

（1江南大学化学与材料工程学院；2食品科学与技术国家重点实验室，江苏无锡 214122）

出版日期:2011-03-05 发布日期:2011-03-05

Synthesis of polydiglycol cyclohexane 1,2-dicarboxylate catalyzed by titanium complex

JIANG Pingping1，2，SHEN Minliang1，DONG Yuming1，ZHANG Xiaoming2，FENG Biao2

（1School of Chemical and Material Engineering，Jiangnan University；2State Key Laboratory of Food Science and Technology，Jiangnan University，Wuxi 214122，Jiangsu，China）

Online:2011-03-05 Published:2011-03-05

摘要/Abstract

摘要：

以六氢苯酐和二甘醇为原料，钛络合物钛酸正四丁酯为催化剂合成聚六氢苯酐二甘醇酯。结果表明，钛酸正四丁酯催化合成聚六氢苯酐二甘醇酯的最佳反应条件为：醇酸摩尔比为1.1∶1，催化剂用量为0.8%（以六氢苯酐质量计），反应温度为220 ℃，反应时间为5 h，－0.095 MPa压强下减压时间为2.5 h，减压温度为220 ℃，酯化率大于99.0%。合成产物聚六氢苯酐二甘醇酯的数均分子量M_n为14000，重均分子量M_w为15000，分子量具有窄分布物性。

Abstract:

Poly diglycol cyclohexane 1,2-dicarboxylate was prepared from hexahydrophthalic anhydride and diethylene glycol，catalyzed by titanium complex tetrabutyl titanate. The best reaction conditions of esterification were determined as follows：molar ratio of diethylene glycol to hexahydrophthalic anhydride 1.1∶1，amount of catalyst 0.8%（based on the mass of hexahydrophthalic anhydride），reaction temperature 220 ℃，reaction time 5 h，vacuum reaction time 2.5 h，vacuum reaction temperature 220 ℃ under vacuum（－0.095 MPa），and esterification yield could be up to 99.0%. Number-average molecular weight of the product poly diglycol cyclohexane 1,2-dicarboxylate was 14000，and weight-average molecular weight of the product was 15000. Molecular weight distribution of the product was narrow.

蒋平平1，2，沈敏亮1，董玉明1，张晓鸣2，冯骉2. 钛络合物均相催化合成聚六氢苯酐二甘醇酯 [J]. 化工进展.

JIANG Pingping1，2，SHEN Minliang1，DONG Yuming1，ZHANG Xiaoming2，FENG Biao2. Synthesis of polydiglycol cyclohexane 1,2-dicarboxylate catalyzed by titanium complex[J]. Chemical Industry and Engineering Progree.