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一种全绿色合成乙交酯的工艺方法。本发明提供的工艺方法是采用无毒的环状有机胍化合物与无毒的线性有机胍化合物组成二元复合催化体系,以质量含量70%的乙醇酸水溶液为原料,通过反应性减压蒸馏法实现高纯度(≥99.9%)乙交酯的高产率(≥98.0%)合成。本发明的优点为:所采用的二元复合
A full green synthetic glycolide process. The process provided by the invention adopts the non-toxic cyclic organic guanidine compound and the non-toxic linear organic guanidine compound to form a binary composite catalytic system, wherein the glycolic acid aqueous solution with a mass content of 70% is taken as a raw material and is subjected to a reaction depressurization distillation method Achieve high yields (≥98.0%) of high purity (≥99.9%) glycolide synthesis. The advantages of the present invention are: the binary compound used