文献类型：专利

英文题名：Method for continuous preparing 1,2,-propylene glycol

作者：FANG Y;LI Y

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1955152-A

申请日：2005-10-28

公开日：2007-05-02

语种：英文

收录：DERWENT

摘要：NOVELTY - This invention relates to a preparation of 1,2- propylene glycol, the main steps are: In the condition that catalyst 1 is existent, first epoxypropane and carbon dioxide are carried out esterification to produce propylene carbonate ester, then propylene carbonate ester processes lytic response to produce target matter in the condition that catalyst 2 is existent and temperature is 30- 180 C. This invention overcomes the flaw of low reactive selectivity that exists in present technology of direct pressurization of epoxypropane.