Title:
POLYPROPYLENE FILM, POLYPROPYLENE FILM WITH INTEGRATED METAL LAYER, AND FILM CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2018/186424
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polypropylene film that exhibits superior DC dielectric breakdown strength at 120°C and superior AC dielectric breakdown strength at 120°C. The polypropylene film according to the present disclosure satisfies formula I and has a thickness of 1.0 to 19 μm. 31.5 ≤ enthalpy of fusion / √crystallite size ≤ 33.0 (I) In formula I, the unit of enthalpy of fusion is J/g, and the unit of crystallite size is nm. Crystallite size is calculated using the Scherrer equation from the full width at half maximum of a reflection peak in the α crystal (040) plane measured using wide-angle X-ray diffraction.
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Inventors:
ISHIDA TATSUJI (JP)
TOMINAGA TAKESHI (JP)
NAKATA MASAHIRO (JP)
ISHIWATA TADAKAZU (JP)
TOMINAGA TAKESHI (JP)
NAKATA MASAHIRO (JP)
ISHIWATA TADAKAZU (JP)
Application Number:
PCT/JP2018/014342
Publication Date:
October 11, 2018
Filing Date:
April 03, 2018
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
C08J5/18; B32B15/085; H01G4/32
Domestic Patent References:
| WO2016051496A1 | 2016-04-07 | |||
| WO2016167328A1 | 2016-10-20 | |||
| WO2013105552A1 | 2013-07-18 | |||
| WO2016017752A1 | 2016-02-04 |
Foreign References:
| JP2016012705A | 2016-01-21 | |||
| JP2014051657A | 2014-03-20 | |||
| JPS59211908A | 1984-11-30 | |||
| JP2016033211A | 2016-03-10 | |||
| JPH09148176A | 1997-06-06 | |||
| JP2010280795A | 2010-12-16 | |||
| JPS6238403B2 | 1987-08-18 | |||
| JP6089186B2 | 2017-03-08 | |||
| JP3689009B2 | 2005-08-31 |
Other References:
FUMIYUKIHAMADA: "High Polymers", vol. 16, 1967, KOBUNSHI, pages: 694 - 706
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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