发明名称 |
POLYETHYLENE MICROPOROUS MEMBRANE, PROCESS FOR PRODUCTION THEREOF, AND BATTERY SEPARATOR |
摘要 |
A microporous polyethylene membrane made of a polyethylene resin having a ratio (mass-average molecular weight / number-average molecular weight) of 5 to 300 and comprising 1% or more by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 7 x 10 5 or more, the microporous polyethylene membrane comprising (a) a coarse-structure layer having an average pore diameter of more than 0.04 µm, which is formed on at least one surface, and (b) a dense-structure layer having an average pore diameter of 0.04 µm or less, an area ratio of the coarse-structure layer to the dense-structure layer in a membrane cross section being 0.1 to 0.8. |
申请公布号 |
EP1932875(A4) |
申请公布日期 |
2012.02.15 |
申请号 |
EP20060810147 |
申请日期 |
2006.09.14 |
申请人 |
TORAY TONEN SPECIALTY SEPARATOR GODO KAISHA |
发明人 |
TAKITA, KOTARO;KIKUCHI, SHINTARO;YAMADA, KAZUHIRO;NAKAMURA, TEIJI;KONO, KOICHI |
分类号 |
C08J9/00;B01D67/00;B01D69/02;B01D71/26;H01M2/16 |
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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