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Title:
BIAXIALLY ORIENTED POLYPROPYLENE FILM, METALLIZED FILM, AND CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2018/124300
Kind Code:
A1
Abstract:
The present invention is a biaxially oriented polypropylene film containing a polypropylene resin, the film having a thickness of 1.0 to 3.0 μm, and a molecular orientation coefficient ΔNx of 0.013 to 0.016, as calculated according to formula (1) on the basis of a birefringence value ΔNxy in the slow axis direction with respect to the fast axis direction and a birefringence value ΔNxz in the slow axis direction with respect to the thickness direction, as measured via optical birefringence measurement.

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Inventors:
TOMINAGA TAKESHI (JP)
SUEYOSHI MICHIKO (JP)
OKUYAMA YOSHIMUNE (JP)
FUJISHIRO YOSHIKAZU (JP)
NAKATA MASAHIRO (JP)
ISHIWATA TADAKAZU (JP)
Application Number:
PCT/JP2017/047353
Publication Date:
July 05, 2018
Filing Date:
December 28, 2017
Export Citation:
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Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
B29C55/14; B32B15/085; C08J5/18; H01G4/18; B29K23/00; B29L7/00; B29L9/00; B29L31/34
Domestic Patent References:
WO2012002123A12012-01-05
Foreign References:
JP2014051657A2014-03-20
JP2014231584A2014-12-11
JP2007084813A2007-04-05
JP2010254868A2010-11-11
JPS5929838B21984-07-23
JP2014055276A2014-03-27
JP3752747B22006-03-08
JP3791038B22006-06-28
JP5660261B12015-01-28
JP2014231604A2014-12-11
Other References:
HIROSHI AWAYA, GUIDE FOR POLARIZATION MICROSCOPE OF HIGH-MOLECULAR-WEIGHT MATERIAL, 2001, pages 105 - 120
T. HAYASHI ET AL., POLYMER, vol. 29, 1988, pages 138
A. TURNER-JONES ET AL., MAKROMOL. CHEM., vol. 75, 1964, pages 134
See also references of EP 3564009A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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