发明名称 |
MICROPOROUS POLYOLEFIN FILM WITH THERMALLY STABLE POROUS LAYER AT HIGH TEMPERATURE |
摘要 |
Provided is a microporous film for a secondary battery, and more particularly, to a microporous film for a secondary battery with excellent quality stability and heat resistance, the microporous film comprising a 3 layer microporous film wherein: an inner layer that includes polypropylene of 20-80 wt % having a melting temperature of 150° C. or higher and a filler of 80-20 wt % having a melting temperature of 140° C. or higher, wherein a gross content of the filler and polypropylene in the inner layer is 60 wt % or more, and both surface layers which include polyethylene, wherein at least one layer of the both surface layers includes polyethylene of 70 wt % or more. |
申请公布号 |
EP2274787(A2) |
申请公布日期 |
2011.01.19 |
申请号 |
EP20090746764 |
申请日期 |
2009.05.14 |
申请人 |
SK ENERGY CO., LTD. |
发明人 |
RHEE, JANG-WEON;JUNG, INHWA;KANG, GWIGWON;LEE, YOUNGKEUN |
分类号 |
H01M10/02;B32B27/32;H01M2/16;H01M10/0525 |
主分类号 |
H01M10/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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