发明名称 |
Method of producing a microporous polyolefin membrane |
摘要 |
<p>An efficient method of producing a microporous polyolefin membrane having improved tensile strength and pierce strength is provided, in which a solution having dissolved therein 5% by weight to 50% by weight of a polyolefin whose weight-average molecular weight is in the range of 5 x 10<5> to 2.5 x 10<6> and whose weight-average molecular weight to number-average molecular weight ratio is less than 10, is extruded and rapidly cooled to obtain a gel-like product which is then stretched and has remaining solvent removed therefrom.</p> |
申请公布号 |
EP0765900(B1) |
申请公布日期 |
2001.06.13 |
申请号 |
EP19960115491 |
申请日期 |
1996.09.26 |
申请人 |
TONEN CHEMICAL CORPORATION |
发明人 |
KAIMAI, NORIMITSU;TAKITA, KOTARO;KONO, KOICHI |
分类号 |
C08J9/28;B01D67/00;B01D71/26;B29C47/14;B29C55/12;B29K105/04;B29L7/00;C08J5/18;C08J9/00;H01M2/16;(IPC1-7):C08J5/18 |
主分类号 |
C08J9/28 |
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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