Title:
POLYOLEFIN MICROPOROUS FILM
Document Type and Number:
WIPO Patent Application WO/2007/116672
Kind Code:
A1
Abstract:
A polyolefin microporous film being a laminate of three or more layers including two
surface layers and at least one interlayer, characterized in that the limiting viscosity
[η] of the interlayer is 3.0 dl/g or higher, and that the limiting viscosity
[η] of the surface layers is smaller than the limiting viscosity [η]
of the interlayer, and that the absolute value of the difference between the pore
closing temperature of the surface layers and the pore closing temperature of
the interlayer is less than 10°C.
Inventors:
INAGAKI, Daisuke (1-2 Yuraku-cho 1-chome, Chiyoda-ku Tokyo, 40, 1008440, JP)
稲垣 大助 (〒40 東京都千代田区有楽町一丁目１番２号 Tokyo, 1008440, JP)
稲垣 大助 (〒40 東京都千代田区有楽町一丁目１番２号 Tokyo, 1008440, JP)
Application Number:
JP2007/056170
Publication Date:
October 18, 2007
Filing Date:
March 26, 2007
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation (1-2 Yuraku-cho 1-chome, Chiyoda-ku Tokyo, 40, 1008440, JP)
旭化成ケミカルズ株式会社 (〒40 東京都千代田区有楽町一丁目１番２号 Tokyo, 1008440, JP)
INAGAKI, Daisuke (1-2 Yuraku-cho 1-chome, Chiyoda-ku Tokyo, 40, 1008440, JP)
旭化成ケミカルズ株式会社 (〒40 東京都千代田区有楽町一丁目１番２号 Tokyo, 1008440, JP)
INAGAKI, Daisuke (1-2 Yuraku-cho 1-chome, Chiyoda-ku Tokyo, 40, 1008440, JP)
International Classes:
B32B27/32; B01D69/12; B01D71/26; B32B5/32; H01G9/02; H01M2/16; H01M10/40
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