发明授权
- 专利标题： Method for production of polybenzazole
- 专利标题（中）： 生产聚吲哚的方法
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申请号： US835850申请日： 1997-04-30
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公开(公告)号： US5919890A公开(公告)日： 1999-07-06
- 发明人: Kiyoshi Hotta , Fuyuhiko Kubota , Yoshio Araki , Masakatsu Ohguchi
- 申请人： Kiyoshi Hotta , Fuyuhiko Kubota , Yoshio Araki , Masakatsu Ohguchi
- 申请人地址： JPX Osaka
- 专利权人： Toyo Boseki Kabushiki Kaisha
- 当前专利权人： Toyo Boseki Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX8-109202 19960430
- 主分类号： C08G73/18
- IPC分类号： C08G73/18 ; C08G73/22 ; C08G75/00 ; C08G75/32 ; C08G63/00
摘要：
A method for producing polybenzazole, which comprises reacting a PBZ monomer salt with an AA-PBZ monomer or a BB-PBZ monomer in a non-oxidizing solvent having a dehydrating action to give an oligomer, and adding the AA-PBZ monomer or BB-PBZ monomer, which has not been subjected to the above reaction, to allow reaction with the oligomer, whereby to give a polymer having a desired polymerization degree. According to this method, the polymerization degree of the polymer to be obtained finally and of the polymer during production process can be easily controlled.
公开/授权文献
- US4724364A CRT Control circuit 公开/授权日：1988-02-09
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