摘要
综述了采用环境友好方法合成聚碳酸酯的工艺,并与光气法进行了对比分析.新方法以二氧化碳为原料,通过系列反应可以依次制得碳酸乙烯酯(EC)、碳酸二甲酯(DMC)、碳酸二苯酯(DPC),最后得到高纯度、高性能的聚碳酸酯(PC).其中,在得到的碳酸酯系列产品中,EC的收率为98%,选择性为100%;DMC的收率和选择性均可达到99.5%;DPC在出料口流出液中的含量可达92.6%,选择性为98%.
A novel green process for producing an aromatic polycarbonate based on bisphenol-A without using phosgene and methylene chloride was discussed in detail in this review. The new process employing carbon dioxide as a starting material successively produces ethylene carbonate (EC), dimethyl carbonate (DMC), diphenyl carbonate (DPC), and high-purity polycarbonate in excellent yields and more than 98.0% selectivity. This new technology not only overcomes the environmental and economic problems existing in the phosgene process, but also achieves resource conservation, and energy conservation. Moreover, the new process contributes to the earth environment by the reduction of CO2 emissions.
出处
《化学研究》
CAS
2005年第3期94-98,共5页
Chemical Research
基金
国家自然科学基金(20472030)
天津市自然科学基金(033609311)
教育部留学回国人员启动基金(教外司留2004-527号)
南开大学创新基金资助课题
关键词
碳酸酯
聚碳酸酯
绿色合成
二氧化碳
原子经济反应
carbonate
polycarbonate
green synthesis
carbon dioxide
atom-efficient reaction