Title:
METHOD FOR MANUFACTURING MICROPOROUS FILM AND MICROPOROUS FILM
Document Type and Number:
WIPO Patent Application WO/2016/136881
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a microporous film, said method comprising: using polypropylene (PP) as a resin component; preparing a resin composition that comprises 0.01-20 parts by weight, per 100 parts by weight of the resin component, of a chemically modified cellulose or chemically modified cellulose nanofiber and 0.01-3 parts by weight, per 100 parts by weight of the resin component, of a β- type crystallization nucleating agent; melt-molding the composition into a membrane-shaped product wherein the crystal phase of the polypropylene component in the resin composition is substantially a β-crystal phase; and then stretching the membrane-shaped product at a temperature of 60-160°C. Also provided is a microporous film.
Inventors:
ISHIGURO RYOU (JP)
NAKAMURA SATORU (JP)
YOSHIOKA MARIKO (JP)
NAKAMURA SATORU (JP)
YOSHIOKA MARIKO (JP)
Application Number:
PCT/JP2016/055644
Publication Date:
September 01, 2016
Filing Date:
February 25, 2016
Export Citation:
Assignee:
JAPAN STEEL WORKS LTD (JP)
International Classes:
C08J9/00; C08K5/20; C08L1/02; C08L23/12; H01M50/489; H01M50/491; H01M50/494
Domestic Patent References:
| WO2013035786A1 | 2013-03-14 |
Foreign References:
| JP2010171005A | 2010-08-05 | |||
| JPH0680832A | 1994-03-22 | |||
| JPS4999777A | 1974-09-20 | |||
| JPS5019146B1 | 1975-07-04 |
Other References:
AMASH A. ET AL.: "Morphology and properties of isotropic and oriented samples of cellulose fibre-polypropylene composites", POLYMER, vol. 41, 2000, pages 1589 - 1596, XP004244148, DOI: doi:10.1016/S0032-3861(99)00273-6
See also references of EP 3263636A4
See also references of EP 3263636A4
Attorney, Agent or Firm:
Shin-Ei Patent Firm, P. C. (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
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