发明名称 |
MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY |
摘要 |
A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers, and at least one second microporous layer disposed between both surface layers, the first microporous layer comprising a first polyethylene resin containing 8% or more by mass of ultra-high-molecular-weight polyethylene having a weight-average molecular weight of 1x106 or more, the second microporous layer comprising a second polyethylene resin containing 7% or less by mass of the ultra-high-molecular-weight polyethylene, and having a structure in which a pore diameter distribution curve obtained by mercury intrusion porosimetry has at least two peaks, and the total thickness of the first microporous layers being 15-60% per 100% of the total thickness of the first and second microporous layers.
|
申请公布号 |
US2010021808(A1) |
申请公布日期 |
2010.01.28 |
申请号 |
US20070296242 |
申请日期 |
2007.04.09 |
申请人 |
TONEN CHEMICAL CORPORATION |
发明人 |
TAKITA KOTARO;KIKUCHI SHINTARO |
分类号 |
H01M2/16;B29C47/06;B32B3/26;B32B37/14 |
主分类号 |
H01M2/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|