发明授权
- 专利标题： Crystalline polymer microporous membrane, method for producing the same, and filter for filtration
- 专利标题（中）： 结晶聚合物微孔膜，其制造方法和过滤用过滤器
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申请号： US12549664申请日： 2009-08-28
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公开(公告)号： US08151998B2公开(公告)日： 2012-04-10
- 发明人: Hirohisa Hokazono
- 申请人： Hirohisa Hokazono
- 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
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2008-225164 20080902
- 主分类号： B01D39/00
- IPC分类号： B01D39/00 ; B01D29/07 ; B29C49/08 ; D02J1/06
摘要：
To provide a crystalline polymer microporous membrane including: a microstructure on the side of one surface of the membrane, the microstructure being composed of series of nodules interconnected with one another by fibrils, wherein the average pore diameter at the one surface of the membrane is larger than the average pore diameter at another surface of the membrane, and the average pore diameter continuously changes from the one surface toward the other surface, and wherein the nodules have an aspect ratio (length/width) of 25 or greater.
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