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陕西延长石油(集团)有限责任公司开发出一种芳香族聚碳酸酯及其制备方法。该方法包括碳酸二芳基酯与芳族二羟基化合物原料除氧处理,原料与催化剂熔融混合,预聚合,预聚物与携带剂气.液混合,混合物换热和在多段导流降膜式缩聚反应器中的聚合反应等步骤。该方法解决了现有界面缩聚法产生的环
Shaanxi Yanchang Petroleum (Group) Co., Ltd. has developed an aromatic polycarbonate and its preparation method. The method comprises the following steps of: deoxidizing raw materials of a diaryl carbonate and an aromatic dihydroxy compound; melt-mixing a raw material and a catalyst; pre-polymerizing a prepolymer and a carrier gas; Polycondensation reactor polymerization and other steps. The method solves the ring generated by the existing interface polycondensation method