发明名称 |
PROCESS FOR THE PRODUCTION OF A MICROPOROUS FILM |
摘要 |
A microporous film of polyethylene having an intrinsic viscosity above 5 dl/g is prepared from a homogeneous solution in an evaporable solvent. The film is cooled and evaporable solvent is evaporated at a temperature below the dissolution temperature. The film is stretched to produce the micorporous film and is passed through a calender. The microporous films with a porosity of up to about 70% by volume and a battery separator quality factor (F) of at least 2.5 are described. Battery separators formed from the microporous films are also described. |
申请公布号 |
EP1092243(B1) |
申请公布日期 |
2003.03.05 |
申请号 |
EP19990925475 |
申请日期 |
1999.06.03 |
申请人 |
DSM N.V. |
发明人 |
CALIS, GIJSBERTUS, HENDRIKUS, MARIA |
分类号 |
C08J9/26;C08J5/18;H01M2/16 |
主分类号 |
C08J9/26 |
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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