使用反应性蒸馏以制备二醇酯的方法;METHOD FOR PREPARING GLYCOL ESTER USING REACTIVE DISTILLATION

摘要

本发明提供一种制备二醇酯的方法，其能在低的温度与压力条件下增进二醇醚的转化率，在使用二醇醚与羧酸制备二醇酯中，使用反应性蒸馏塔最小化未反应材料的回收量，且减少杂质的制造量。;此外，本发明提供一种制备用于电子产品之二醇酯的方法，其能藉由注入相较二醇醚的莫耳数过量的羧酸而减少朝反应性蒸馏塔的上部部分之二醇酯的减损量，且在加压条件下易于将该二醇酯与该羧酸彼此分离，且在无分离的共沸蒸馏设备的情形下简化后续分离塔制程。;In addition, provided is a method for preparing a glycol ester for electronics capable of decreasing a loss of the glycol ester toward an upper portion of a reactive distillation column by injecting an excess amount of a carboxylic acid as compared to a molar number of a glycol ether and easily separating the glycol ester and the carboxylic acid from each other under a pressurized condition, and simplifying a subsequent separation column process without a separate azeotropic distillation apparatus.