PRODUCTION METHOD FOR AROMATIC POLYCARBONATE RESIN HAVING INCREASED MOLECULAR WEIGHT
申请人:Mitsubishi Gas Chemical Company, Inc.
公开号:EP2921515A1
公开(公告)日:2015-09-23
The invention provides a process for producing a highly polymerized aromatic polycarbonate resin including a molecular weight-increasing step of reacting an aromatic polycarbonate prepolymer with an aliphatic diol compound represented by Formula (g2) in the presence of a transesterification catalyst to obtain a highly polymerized aromatic polycarbonate resin. In the formula, Ra and Rb each independently represent a hydrogen atom, a halogen atom, a linear or branched alkyl group, a cycloalkyl group, an aryl group or an alkoxy group, or Ra and Rb may be bonded to each other to form a ring; R1 to R4 each independently represent a hydrogen atom, a halogen atom or an alkyl group; and n represents an integer of 0 to 30.
本发明提供了一种生产高度聚合的芳香族聚碳酸酯树脂的工艺,包括一个增加分子量的步骤,即在酯交换催化剂存在下,芳香族聚碳酸酯预聚物与由式(g2)表示的脂肪族二元醇化合物反应,得到高度聚合的芳香族聚碳酸酯树脂。式中,Ra 和 Rb 各自独立地代表氢原子、卤素原子、直链或支链烷基、环烷基、芳基或烷氧基,或 Ra 和 Rb 可相互键合形成环;R1 至 R4 各自独立地代表氢原子、卤素原子或烷基;n 代表 0 至 30 的整数。