专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1997008227A1 PROCESS FOR PRODUCING POLYCARBONATE PREPOLYMER GRANULES FOR SOLID-STATE POLYMERIZATION 审中-公开
标题翻译：生产用于固态聚合的聚碳酸酯预聚物颗粒的方法
公开(公告)号：WO1997008227A1
公开(公告)日：1997-03-06
申请号：PCT/JP1996002046
申请日：1996-07-22
申请人： IDEMITSU PETROCHEMICAL CO., LTD. , MOTEGI, Hiroaki , KUNISHI, Noriyuki , SHISHIKURA, Akihiro
发明人： IDEMITSU PETROCHEMICAL CO., LTD.
IPC分类号： C08J03/14
CPC分类号： C08J3/14 , B29B9/12 , B29K2069/00 , C08G64/20 , C08J3/12 , C08J2369/00 , Y10T428/24372 , Y10T428/24405 , Y10T428/249953 , Y10T428/2982
摘要： A process for producing polycarbonate prepolymer granules for solid-state polymerization characterized by dissolving a polycarbonate prepolymer in a solvent under heating, followed by cooling for effecting crystallization, and granulation. This process suppresses the fusion of prepolymer granules among themselves in the polymerization step and expedites the polymerization.
摘要翻译：一种用于制备用于固态聚合的聚碳酸酯预聚物颗粒的方法，其特征在于将聚碳酸酯预聚物在加热下溶解在溶剂中，然后冷却以进行结晶和造粒。该方法抑制聚合步骤中预聚物颗粒彼此之间的融合并加速聚合。

2. 发明申请

WO1996023832A1 PROCESS FOR PRODUCING POLYCARBONATE 审中-公开
标题翻译：生产聚碳酸酯的方法
公开(公告)号：WO1996023832A1
公开(公告)日：1996-08-08
申请号：PCT/JP1996000178
申请日：1996-01-31
申请人： IDEMITSU KOSAN CO., LTD. , KUZE, Shigeki , TANAKA, Kenji , SUGA, Kouichi , SEINO, Yoshikatsu , SHISHIKURA, Akihiro , KUNISHI, Noriyuki
发明人： IDEMITSU KOSAN CO., LTD.
IPC分类号： C08G64/22
CPC分类号： C08G64/307 , C08G64/22 , C08G64/24
摘要： A process for producing polycarbonate through transesterification using, as the polymerization catalyst: (1) a combination of a nitrogenous organic base compound and a quaternary phosphonium salt, (2) a tetraarylphosphonium salt having a specific structure or (3) a quaternary phosphonium salt having a specific structure bearing a branched alkyl group; and a process for producing polycarbonate comprising preparing a polycarbonate prepolymer by prepolymerization and subjecting the prepolymer to solid-phase polymerization using a quaternary phosphonium salt as the catalyst. According to these processes, a high-quality polycarbonate excellent in appearance, resistances to heat and hydrolysis and so on can be produced extremely efficiently.
摘要翻译：作为聚合催化剂，通过酯交换生产聚碳酸酯的方法：（1）含氮有机碱化合物和季鏻盐的组合，（2）具有特定结构的四芳基鏻盐或（3）季鏻盐，其具有具有支链烷基的特定结构; 以及生产聚碳酸酯的方法，包括通过预聚合制备聚碳酸酯预聚物，并使用季鏻盐作为催化剂使预聚物进行固相聚合。根据这些方法，可以非常有效地制造外观优异，耐热性和水解性优异的高品质聚碳酸酯等。

3. 发明申请

WO1996023831A1 PROCESS FOR PRODUCING POLYCARBONATES 审中-公开
标题翻译：生产聚碳酸酯的方法
公开(公告)号：WO1996023831A1
公开(公告)日：1996-08-08
申请号：PCT/JP1996000220
申请日：1996-02-02
申请人： IDEMITSU PETROCHEMICAL CO., LTD. , SHISHIKURA, Akihiro , TAKAHASHI, Masahiro , TAKAHASHI, Seiji , KUNISHI, Noriyuki , MOTEGI, Hiroaki
发明人： IDEMITSU PETROCHEMICAL CO., LTD.
IPC分类号： C08G64/20
CPC分类号： C08G64/20 , C08G64/24 , C08G64/307
摘要： A process for producing high-quality and high-molecular-weight polycarbonates by solid-phase polymerization, which comprises conducting the solid-phase polymerization of polycarbonate oligomers either in an atmosphere containing a swollen solvent gas or in the flow of a poor-solvent gas, thus solving such problems of the conventional processes for producing the desired polycarbonates that they require relatively many process steps and a long time.
摘要翻译：一种通过固相聚合生产高质量和高分子量聚碳酸酯的方法，其包括在含有溶胀溶剂气体的气氛中或在不良溶剂气体流中进行聚碳酸酯低聚物的固相聚合，从而解决了生产所需聚碳酸酯的常规方法的这些问题，它们需要相对多的工艺步骤和长时间。

4. 发明申请

WO1997019975A1 PROCESSES FOR THE PRODUCTION OF POLYCARBONATE 审中-公开
标题翻译：生产聚碳酸酯的方法
公开(公告)号：WO1997019975A1
公开(公告)日：1997-06-05
申请号：PCT/JP1996003427
申请日：1996-11-22
申请人： IDEMITSU PETROCHEMICAL CO., LTD. , SHISHIKURA, Akihiro , TAKAHASHI, Seiji
发明人： IDEMITSU PETROCHEMICAL CO., LTD.
IPC分类号： C08G64/20
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，其简化在固相聚合之前进行的结晶，从而允许在处理时间内进一步缩短。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反应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，同时预聚物保持在流体状态。制备聚碳酸酯的另一种方法的特征在于，通过芳香族二羟基化合物与碳酸二酯和聚碳酸酯预聚物的酯交换反应制备的非晶形聚碳酸酯预聚物的混合物在固相中在含有气态溶胀溶剂。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式