发明申请
- 专利标题： CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER
- 专利标题（中）： 晶体聚合物微孔膜，其制造方法和过滤器
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申请号： US12829861申请日： 2010-07-02
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公开(公告)号： US20110000846A1公开(公告)日： 2011-01-06
- 发明人: Kenichi ISHIZUKA , Nobuhiro Nishita
- 申请人： Kenichi ISHIZUKA , Nobuhiro Nishita
- 申请人地址： JP Tokyo
- 专利权人： FUJIFILM Corporation
- 当前专利权人： FUJIFILM Corporation
- 当前专利权人地址： JP Tokyo
- 优先权： JP2009-160081 20090706
- 主分类号： B01D71/44
- IPC分类号： B01D71/44 ; B29C55/04 ; B29C55/12
摘要：
A crystalline polymer microporous membrane, which contains: a microporous film formed of a crystalline polymer, which has a plurality of pores; and a hydrophilic polymer containing a hydroxyl group, which covers exposed surfaces of the microporous film, wherein the plurality of pores have a larger average pore diameter at a first surface of the film than the average pore diameter at a second surface of the film, and the average pore diameter of the pores continuously changes from the first surface to the second surface.