发明授权
- 专利标题： Process for preparation of filter-containing polytetrafluoroethylene fine powder
- 专利标题（中）： 含过滤聚四氟乙烯细粉的制备方法
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申请号： US171907申请日： 1980-07-24
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公开(公告)号： US4451616A公开(公告)日： 1984-05-29
- 发明人: Shoji Kawachi , Toshinori Kadowaki , Katsutoshi Yamamoto
- 申请人： Shoji Kawachi , Toshinori Kadowaki , Katsutoshi Yamamoto
- 申请人地址： JPX Osaka
- 专利权人： Daikin Kogyo Co., Ltd.
- 当前专利权人： Daikin Kogyo Co., Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX54-94460 19790724
- 主分类号： C08L27/12
- IPC分类号： C08L27/12 ; C08J3/00 ; C08J3/16 ; C08J3/21 ; C08K7/06 ; C08L1/00 ; C08L7/00 ; C08L21/00 ; C08L27/00 ; C08L27/18 ; C08L77/00 ; C08L87/00 ; C08K5/02
摘要：
A process for preparation of filler-containing polytetrafluoroethylene fine powder by coagulating polytetrafluoroethylene together with at least one filler selected from the group consisting of polyimide resins, polyamide-imide resins, polyamide resins and carbon fiber powders from their aqueous dispersion, characterized in that a water-insoluble organic liquid having a boiling point of from 30.degree. to 150.degree. C. and a surface tension of not more than 35 dyne/cm at 20.degree. C. is added to the aqueous dispersion under agitation at any stage from the start to the end of the coagulation.
公开/授权文献
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