发明授权
- 专利标题： Method for producing polytetrafluoroethylene fine powder
- 专利标题（中）： 生产聚四氟乙烯细粉的方法
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申请号： US12910904申请日： 2010-10-25
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公开(公告)号： US08575287B2公开(公告)日： 2013-11-05
- 发明人: Shinya Higuchi , Yasuhiko Matsuoka , Shigeki Kobayashi
- 申请人： Shinya Higuchi , Yasuhiko Matsuoka , Shigeki Kobayashi
- 申请人地址： JP Tokyo
- 专利权人： Asahi Glass Company, Limited
- 当前专利权人： Asahi Glass Company, Limited
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2008-132657 20080521
- 主分类号： C08F14/18
- IPC分类号： C08F14/18
摘要：
To provide a method for producing a PTFE fine powder having a low paste extrusion pressure property by a simple method. The method for producing a PTFE fine power comprises emulsion polymerizing tetrafluoroethylene in the presence of an aqueous medium, a fluorinated surfactant and a radical polymerization initiator, to produce an aqueous PTFE emulsion, and coagulating it in the presence of at least one bulk density-reducing compound selected from the group consisting of ammonia, an ammonium salt and urea in an amount of from 0.4 to 10 parts by mass per 100 parts by mass of PTFE.
公开/授权文献
- US20110040054A1 METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE FINE POWDER 公开/授权日：2011-02-17
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