Title:
多層微多孔フィルム
Document Type and Number:
Japanese Patent JP5728473
Kind Code:
B2
Abstract:
The invention relates to microporous membranes having at least two layers, a first layer comprising polymethylpentene and a second layer which comprises a polymer and has a composition that is not substantially the same as that of the first layer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film in, e.g., lithium ion batteries.
Inventors:
Takeshi Ishihara
Satoshi Miyaoka
Satoshi Miyaoka
Application Number:
JP2012516126A
Publication Date:
June 03, 2015
Filing Date:
June 08, 2010
Export Citation:
Assignee:
Toray Battery Separator Film Co., Ltd.
International Classes:
B32B27/32; B32B5/32; H01M10/052; H01M50/403; H01M50/406; H01M50/489; H01M50/491
Domestic Patent References:
| JP2007023918A1 | ||||
| JP8250097A | ||||
| JP2009045774A | ||||
| JP2009045775A | ||||
| JP2004161899A | ||||
| JP2002343326A | ||||
| JP2002170541A | ||||
| JP2009160933A | ||||
| JP2011521413A |