MICROPOROUS FILM AND METHOD FOR PRODUCTION THEREOF

Title:

MICROPOROUS FILM AND METHOD FOR PRODUCTION THEREOF

Document Type and Number:

WIPO Patent Application WO/2004/024809

Kind Code:

A1

Abstract:

A microporous film, which comprises polyethylene and has a thickness of 1 to 500 μm, a porosity of 20 to 80 %, a storage modulus in melting state of 4.5 MPa or more, a heat of melting for a higher melting point crystal of 2 J/g or more.

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JPH10100246	MANUFACTURE OF POLYOLEFIN MOLDING
JPH0497829	MANUFACTURE OF BIAXIALLY ORIENTED POLYOXYMETHYLENE FILM

Inventors:

HASEGAWA TAKUYA (JP)
TAKEDA HISASHI (JP)
HASHIMOTO SATOSHI (JP)

Application Number:

PCT/JP2003/011738

Publication Date:

March 25, 2004

Filing Date:

September 12, 2003

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)
HASEGAWA TAKUYA (JP)
TAKEDA HISASHI (JP)
HASHIMOTO SATOSHI (JP)

International Classes:

B29C55/18; H01M50/406; H01M50/417; H01M50/489; H01M50/491; (IPC1-7): C08J9/26; B29C55/18; H01M2/16

Foreign References:

JPH11302436A	1999-11-02
JPH11268118A	1999-10-05
JPS6048335A	1985-03-16

Attorney, Agent or Firm:

Watanabe, Junzo (Akasaka Habitation Building, 3-5, Akasaka 1-chom, Minato-ku Tokyo, JP)

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