发明授权
- 专利标题： Process for preparing polyphenylene ethers
- 专利标题（中）： 制备聚苯醚的方法
-
申请号： US466746申请日： 1983-02-15
-
公开(公告)号： US4463164A公开(公告)日： 1984-07-31
- 发明人: William O. Dalton , Michael K. Rinehart , Akitoshi Sugio
- 申请人： William O. Dalton , Michael K. Rinehart , Akitoshi Sugio
- 申请人地址： WV Parkersburg
- 专利权人： Borg-Warner Chemicals, Inc.
- 当前专利权人： Borg-Warner Chemicals, Inc.
- 当前专利权人地址： WV Parkersburg
- 主分类号： C08G65/44
- IPC分类号： C08G65/44 ; C08G65/46
摘要：
An improved method for the production of polyphenylene ethers is disclosed. The method comprises oxidatively coupling monohydric phenols in the presence of a complex catalyst and in a liquid medium which is a solvent for the monomer and catalyst and a non-solvent for the polyphenylene ether. The polyphenylene ether precipitates to form a slurry of particulate solids which is then washed with an aqueous solution of a chelating agent to remove catalyst residue.
公开/授权文献
- US5649543A Pulse-wave propagation time basis blood pressure monitor 公开/授权日：1997-07-22
信息查询
