A process for producing a (co)polycarbonate having excellent thermal resistance, hue and impact resistance and a high molecular weight, which comprises conducting a melt-polycondensation of a dihydroxy compound and a carbonic diester as monomers in the presence of a transesterification catalyst in a tank reactor, while removing a monohydroxy compound formed by the melt-polycondensation, thereby obtaining a reaction mixture comprising a prepolymer in a molten state (the first step), cooling the molten reaction mixture obtained in the first step to solidify it (the second step), and conducting a melt-polycondensation of the reaction mixture comprising the prepolymer in a horizontal polycondensation reactor, thereby obtaining a reaction mixture comprising a high-molecular-weight (co)polycarbonate (the third step).
一种生产具有优异耐热性、色调和抗冲击性以及高分子量的(共)聚
碳酸酯的工艺,包括在罐式反应器中,在酯交换催化剂存在下,将二羟基化合物和
碳酸二酯作为单体进行熔融缩聚,同时除去熔融缩聚形成的单羟基化合物、从而获得包含熔融状态预聚物的反应混合物(第一步),冷却第一步中获得的熔融反应混合物使其固化(第二步),在
水平缩聚反应器中对包含预聚物的反应混合物进行熔融缩聚,从而获得包含高分子量(共)聚
碳酸酯的反应混合物(第三步)。