Title:
POLYPROPYLENE FILM, METAL MEMBRANE LAYERED FILM USING SAME, AND FILM CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2023/188598
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polypropylene film that has excellent withstand voltage characteristics and reliability in high-temperature environments, and is suitable for a capacitor or the like used under high temperatures and high voltages. This polypropylene film includes a cyclic olefin resin, is such that when the strength in the main orientation direction measured at 23°C is F(A23) and the strength in the direction perpendicular to the main orientation direction measured at 23°C is F(B23) then F(A23) + F(B23) is 120 to 1000 MPa, and is such that the shrinkage rate in the main orientation direction measured at 150°C is -2.0 to 3.0%.
Inventors:
TATSUKI TOSHIUMI (JP)
OHKURA MASATOSHI (JP)
IMANISHI YASUYUKI (JP)
OHKURA MASATOSHI (JP)
IMANISHI YASUYUKI (JP)
Application Number:
PCT/JP2022/046637
Publication Date:
October 05, 2023
Filing Date:
December 19, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J5/18; B32B15/08; B32B27/32; H01G4/32
Domestic Patent References:
| WO2021070672A1 | 2021-04-15 | |||
| WO2016175331A1 | 2016-11-03 | |||
| WO2021176930A1 | 2021-09-10 | |||
| WO2022270577A1 | 2022-12-29 |
Foreign References:
| JP2022035487A | 2022-03-04 | |||
| JP6992929B1 | 2022-01-13 | |||
| JP2020521867A | 2020-07-27 | |||
| JP2020520127A | 2020-07-02 | |||
| JP7188651B1 | 2022-12-13 |
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