发明名称 |
POLYOLEFIN MICROPOROUS MEMBRANE, SEPARATOR FOR BATTERY USINGTHE MEMBRANE, AND BATTERY |
摘要 |
A microporous polyolefin membrane made of a polyethylene resin as a main component, and having (a) a shutdown temperature of 135°C or lower, at which the air permeability measured while heating at a temperature-elevating speed of 5°C/minute reaches 1 x 10 5 sec/100 cm 3 , (b) an air permeability change ratio of 1 x 10 4 sec/100 cm 3 /°C or more, which is a gradient of a curve representing the dependency of the above air permeability on a temperature at the air permeability of 1 x 10 4 sec/100 cm 3 , and (c) a meltdown temperature of 150°C or higher, at which the air permeability measured while further heating after reaching the above shutdown temperature becomes 1 x 10 5 sec/100 cm 3 again. |
申请公布号 |
CA2627811(A1) |
申请公布日期 |
2007.05.10 |
申请号 |
CA20062627811 |
申请日期 |
2006.10.31 |
申请人 |
TONEN CHEMICAL CORPORATION |
发明人 |
KAIMAI, NORIMITSU;KIMISHIMA, KOTARO |
分类号 |
C08J9/00;C08J9/26;H01M2/16;H01M10/0565 |
主分类号 |
C08J9/00 |
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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