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    • 8. 发明公开
    • METHOD FOR CONTINUOUS PRODUCTION OF HIGH-MOLECULAR-WEIGHT POLYCARBONATE RESIN
    • VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON HOCHMOLEKULAREM POLYCARBONATHARZZ
    • EP2799464A4
    • 2015-08-05
    • EP12861519
    • 2012-12-27
    • MITSUBISHI GAS CHEMICAL CO
    • ISAHAYA YOSHINORIHIRASHIMA ATSUSHIHARADA HIDEFUMIITO MAKIHAYAKAWA JUN-YAISOBE TAKEHIKOTOKUTAKE TAICHISHINKAI YOUSUKE
    • C08G64/30C08G64/16
    • C08G64/307B01J19/0066B01J19/1856B01J19/1862B01J19/20B01J2219/00094B01J2219/00779
    • The present invention provides an improved method for continuously producing a high-molecular-weight polycarbonate resin by carrying out a linking and highly-polymerizing reaction of an aromatic polycarbonate prepolymer with an aliphatic diol compound wherein the retention time of the reaction mixture in the linking and highly-polymerizing reactor is shortened to achieve excellent performance. The process comprises a process (A) for producing an aromatic polycarbonate prepolymer by polycondensation reaction of an aromatic dihydroxy compound with diester carbonate and a process(B) for conducting linking and highly-polymerizing reaction of the aromatic polycarbonate prepolymer with an aliphatic diol compound in the linking and highly-polymerizing reactor, wherein the aromatic polycarbonate prepolymer produced by the process (A) is fed continuously to the linking and highly-polymerizing reactor, while the aliphatic diol compound is fed continuously thereto under reduced pressure of 10 torr or less to carry out the reaction.
    • 本发明提供了一种通过进行芳族聚碳酸酯预聚物与脂族二醇化合物的连接和高度聚合反应连续生产高分子量聚碳酸酯树脂的改进方法,其中反应混合物在连接和 高聚合反应器缩短以达到优异的性能。 该方法包括通过芳族二羟基化合物与二酯碳酸酯的缩聚反应制备芳族聚碳酸酯预聚物的方法(A)和用于使芳族聚碳酸酯预聚物与脂族二醇化合物进行连接和高度聚合反应的方法(B) 连接高分子化反应器,其中通过方法(A)制备的芳族聚碳酸酯预聚物连续进料到连接和高度聚合的反应器中,同时将脂族二醇化合物在10托或更低的压力下连续供给至 进行反应。