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介绍一种采用1,2-丙二醇、环氧丙烷在催化剂的作用下进行开环聚合反应制得中间体,然后对中间体采用特殊的精馏方式进行组分分离,得到纯度高达98%以上的二缩三丙二醇联产二丙二醇新工艺。
A method for the synthesis of intermediates by using 1,2-propanediol and propylene oxide as ring-opening polymerization catalysts under the action of catalysts was introduced. Then, the intermediates were separated by special rectification method to obtain the intermediates with purity up to 98% New Technology of Dipropylene Glycol Co - production Dipropylene Glycol.