Title:
POROUS FILM AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3965833
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a porous film that has excellent organic solvent permeation properties and excellent face strength.
SOLUTION: This porous film comprises a polyolefin resin in which (a) the thickness of the film is 5-100 μm, (b) the propylene carbonate permeation time is ≤7 seconds calculating the film thickness as 25 μm and (c) the pin sticking strength is ≥400 gf/25 μm.
Inventors:
Kazuhiro Kato
Yasu Usami
Kyosuke Watanabe
Yasu Usami
Kyosuke Watanabe
Application Number:
JP19403699A
Publication Date:
August 29, 2007
Filing Date:
July 08, 1999
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C08J9/00; C08J9/26; B29C55/14; B29C67/20; C08K5/00; C08L23/02; (IPC1-7): C08J9/26; B29C55/14; B29C67/20; C08K5/00; C08L23/02; //B29K23:00; B29K105:04
Domestic Patent References:
| JP11060789A |
Attorney, Agent or Firm:
Hasegawa Soji
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