To provide a separator for an oven resistance characteristics storage device with which a storage device having superior oven resistance characteristics can be manufactured.
A storage device having superior oven resistance characteristics and a separator for an oven resistance characteristics storage device are produced, by using a microporous membrane whose product of diffusion coefficients in respective directions determined by field gradient NMR method satisfies the relation D(Z)×D(MD)×D(TD)<4.5×10-31 as a separator for the storage device. D(Z), where D(MD), D(TD) indicate coefficients in the film thickness direction and the MD (longitudinal) direction, the TD (lateral) direction of the separator determined by a field gradient NMR method, respectively.
MORIKAWA TAKUYA
ASAHI KASEI CORP
| JP2002252028A | 2002-09-06 | |||
| JP2005069895A | 2005-03-17 | |||
| JP2006114284A | 2006-04-27 |
| WO2009099088A1 | 2009-08-13 |
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Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito