上海科技大学知识管理系统

Disclosed in the present invention is a polyester degradation method. Specifically, the polyester degradation method disclosed in the present invention comprises the following steps : degrading a polyester under the action of a carboxylic acid and a catalyst, the polyester containing repeating units formed by a dicarboxylic acid and diol, and the catalyst being a Lewis acid and//or a sulfonic organic acid. The degradation method of the present invention has a wide application range, a resulting product dicarboxylic acid is easy to separate and can be used in resynthesis of the polyester, the catalyst can be recycled and reused, a resulting product diol dicarboxylic acid ester can be reduced by hydrogenation to form a carboxylic acid that can be repeatedly used for polyester degradation with the catalyst in a degradation liquid, so that the industrial benefits of polyester degradation are maximized.

本发明公开了一种聚酯降解方法。 具体地说， 本发明公开了一种聚酯降解方法，包括以下步骤： 在羧酸和催化剂的作用下降解聚酯，所述聚酯包含由二羧酸和二醇形成的重复单元，所述催化剂为路易斯酸和//或磺酸。 本发明降解方法适用范围广， 所得产物二羧酸易于分离，可用于聚酯的再合成， 催化剂可循环使用，所得产物二醇二羧酸酯可通过加氢还原形成羧酸，该羧酸可在降解液中与催化剂一起重复用于聚酯降解，从而使聚酯降解的工业效益最大化。