发明申请
- 专利标题： PROCESS FOR PRODUCING POLYTETRAFLUOROETHYLENE FINE POWDER
- 专利标题（中）： 生产聚四氟乙烯微粉的方法
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申请号： US13810323申请日： 2011-09-29
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公开(公告)号： US20130122302A1公开(公告)日： 2013-05-16
- 发明人: Masayoshi Miyamoto , Taku Yamanaka , Yasuhiko Sawada
- 申请人： Masayoshi Miyamoto , Taku Yamanaka , Yasuhiko Sawada
- 申请人地址： JP Osaka-shi, Osaka
- 专利权人： DAIKIN INDUSTRIES, LTD.
- 当前专利权人： DAIKIN INDUSTRIES, LTD.
- 当前专利权人地址： JP Osaka-shi, Osaka
- 国际申请： PCT/JP2011/073039 WO 20110929
- 主分类号： C08F14/26
- IPC分类号： C08F14/26
摘要：
A process for producing a polytetrafluoroethylene fine powder including: (1) a step of preparing an aqueous dispersion containing polytetrafluoroethylene, water and a surfactant (A); (2) a step of initiating coagulation of the polytetrafluoroethylene in said aqueous dispersion by agitating said aqueous dispersion; (3) a step of adding a surfactant (B) after the step (2); (4) a step of terminating coagulation after the step (3); (5) a step of collecting a wet powder of the polytetrafluoroethylene; and (6) a step of drying the wet powder of the polytetrafluoroethylene.
公开/授权文献
- US09309335B2 Process for producing polytetrafluoroethylene fine powder 公开/授权日：2016-04-12
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