发明授权
US5359117A Processes for producing aromatic polycarbonate oligomer and aromatic
polycarbonate
失效
制备芳族聚碳酸酯低聚物和芳族聚碳酸酯的方法
- 专利标题： Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate
- 专利标题（中）： 制备芳族聚碳酸酯低聚物和芳族聚碳酸酯的方法
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申请号： US87340申请日： 1993-07-08
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公开(公告)号： US5359117A公开(公告)日： 1994-10-25
- 发明人: Yoshiyuki Totani , Motokazu Hirao , Tomonori Ito , Masakatsu Nakatsuka , Akihiro Yamaguchi , Ken-Ichi Goto , Takashi Kuroki , Yukiko Mori , Shoji Obuchi , Masahiro Ohta
- 申请人： Yoshiyuki Totani , Motokazu Hirao , Tomonori Ito , Masakatsu Nakatsuka , Akihiro Yamaguchi , Ken-Ichi Goto , Takashi Kuroki , Yukiko Mori , Shoji Obuchi , Masahiro Ohta
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-199553 19920727; JPX4-338582 19921218
- 主分类号： C08G64/24
- IPC分类号： C08G64/24 ; C07C69/96
摘要：
A process for producing continuously an aromatic polycarbonate oligomer by reacting an aromatic dihydroxy compound and an alkali metal base or an alkaline earth metal base with a carbonyl halide compound comprises:(1) feeding continuously to a tank reactor an aromatic dihydroxy compound, water, a molecular weight controlling agent, a polymerization catalyst, a carbonyl halide compound, and an organic solvent, and an alkali metal base or an alkaline earth metal base in an amount of 1.15-1.6 equivalents based on the aromatic dihydroxy compound,(2) carrying out the reaction with a residence time as defined by the following formula,log Y