| 发明名称 |
MULTILAYERED MICROPOROUS POLYOLEFIN FILM |
| 摘要 |
A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more:;Pore density=(P/A3)×104 (1);wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%). |
| 申请公布号 |
US2015037653(A1) |
申请公布日期 |
2015.02.05 |
| 申请号 |
US201314384014 |
申请日期 |
2013.03.18 |
| 申请人 |
Toray Battery Separator Film Co., Ltd. |
发明人 |
Saito Toshiya;Yamada Kazuhiro;Kikuchi Shintaro |
| 分类号 |
H01M2/16 |
主分类号 |
H01M2/16 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A polyolefin multilayer microporous membrane comprising:
at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between said both surface layers, wherein static friction coefficient of one of said surface layers of said polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more:
pore density=(P/A3)×104 (1) wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%). |
| 地址 |
Nasushiobara-shi JP |
