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1. 发明公开

EP0708128A1 PROCESS FOR PRODUCING POLYCARBONATE 失效
标题翻译： VERFAHREN ZUR HERSTELLUNG VON POLYCARBONAT
公开(公告)号：EP0708128A1
公开(公告)日：1996-04-24
申请号：EP94919850.1
申请日：1994-07-05
申请人： IDEMITSU PETROCHEMICAL CO., LTD.
发明人： OKUMURA, Ryozo , KUZE, Shigeki , TAKAHASHI, Seiji
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： The present invention is directed to a process for preparing a polycarbonate in accordance with an ester exchange reaction of a dihydroxy compound (A) and a carbonic acid diester (B) by adjusting, to 2 ppm or less, the concentration of oxygen in an atmosphere in which the ester exchange reaction is carried out.
According to the present invention, there can efficiently be prepared the polycarbonate which is free from residence burn and which is excellent in hydrolysis resistance and color tone.
摘要翻译：本发明涉及一种通过将二氧化合物（A）和碳酸二酯（B）的酯交换反应通过将气氛中的氧浓度调节至2ppm以下来制备聚碳酸酯的方法其中进行酯交换反应。根据本发明，可以有效地制备不含停留的聚碳酸酯，其耐水解性和色调优异。

2. 发明授权

EP0708128B2 PROCESS FOR PRODUCING POLYCARBONATE 失效
公开(公告)号：EP0708128B2
公开(公告)日：2005-03-23
申请号：EP94919850.1
申请日：1994-07-05
申请人： IDEMITSU PETROCHEMICAL CO., LTD.
发明人： OKUMURA, Ryozo , KUZE, Shigeki , TAKAHASHI, Seiji
IPC分类号： C08G64/30
CPC分类号： C08G64/307

3. 发明授权

EP0864597B1 PROCESSES FOR THE PRODUCTION OF POLYCARBONATE 失效
标题翻译：生产聚碳酸酯的方法
公开(公告)号：EP0864597B1
公开(公告)日：2002-02-06
申请号：EP96939301.6
申请日：1996-11-22
申请人： Idemitsu Petrochemical Co., Ltd.
发明人： SHISHIKURA, Akihiro Idemitsu Petrochemical Co.Ltd. , TAKAHASHI, Seiji
IPC分类号： C08G64/20 , C08G64/30
CPC分类号： C08G64/307 , C08G64/20
摘要： Processes for producing polycarbonate by solid phase polymerization which simplify the crystallization to be conducted prior to the solid phase polymerization to thereby permit further shortening in the treatment time. A process for producing polycarbonate is characterized in that an amorphous polycarbonate prepolymer prepared by transesterification of an aromatic dihydroxy compound with a diester of carbonic acid is polymerized in a solid phase in an atmosphere containing a gaseous swollen solvent while the prepolymer is kept in a fluid state. Another process for producing polycarbonate is characterized in that a mixture comprising an amorphous polycarbonate prepolymer prepared by transesterification of an aromatic dihydroxy compound with a diester of carbonic acid and a polycarbonate prepolymer which has undergone crystallization is polymerized in a solid phase in an atmosphere containing a gaseous swollen solvent.
摘要翻译：通过固相聚合生产聚碳酸酯的方法简化了在固相聚合之前进行的结晶，从而可以进一步缩短处理时间。制备聚碳酸酯的方法的特征在于，通过芳族二羟基化合物与碳酸二酯的酯交换制备的无定形聚碳酸酯预聚物在含有气体溶胀溶剂的气氛中在固相中聚合，同时预聚物保持流体状态。另一种生产聚碳酸酯的方法的特征在于，将包含通过芳族二羟基化合物与碳酸二酯和已经结晶的聚碳酸酯预聚物进行酯交换反应制备的无定形聚碳酸酯预聚物的混合物在固相中在含有气态溶胀的溶剂。

4. 发明授权

EP0708128B1 PROCESS FOR PRODUCING POLYCARBONATE 失效
公开(公告)号：EP0708128B1
公开(公告)日：1999-03-17
申请号：EP94919850.1
申请日：1994-07-05
申请人： IDEMITSU PETROCHEMICAL CO., LTD.
发明人： OKUMURA, Ryozo , KUZE, Shigeki , TAKAHASHI, Seiji
IPC分类号： C08G64/30
CPC分类号： C08G64/307

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