An aromatic polycarbonate and an active-hydrogen compound are subjected to the transesterification reaction in the presence of a transesterification catalyst under a reduced pressure condition followed by reaction with a salicylic acid ester derivative expressed by the following chemical formula (1),
wherein X is methyl or ethyl, and Y is a carbonyl group or a divalent functional group expressed by the following formula (2),
(where Z is an alkylene group having a carbon number of 1 to 30, an arylene group having a carbon number of 6 to 30 or an aralkylene group having a carbon number of 7 to 30)}.
An aromatic polycarbonate having a high molecular weight can be produced by this process.
芳香族聚
碳酸酯和活性氢化合物在减压条件下,在酯交换催化剂存在下进行酯交换反应,然后与下式(1)表示的
水杨酸酯衍
生物反应、
其中 X 是甲基或乙基,Y 是羰基或下式(2)表示的二价官能团、
(其中 Z 是碳原子数为 1 至 30 的亚烷基、碳原子数为 6 至 30 的芳烷基或碳原子数为 7 至 30 的芳烷基)}。
通过该工艺可生产出具有高分子量的芳香族聚
碳酸酯。