Biaxially stretched polypropylene film for capacitors
US10759929B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A main object is to provide a biaxially stretched polypropylene film for capacitors that has high voltage resistance at high temperatures and excellent dielectric breakdown properties and that can be formed into an ultrathin film. Furthermore, a capacitor obtained by using the biaxially stretched polypropylene film for capacitors described above is provided.The biaxially stretched polypropylene film for capacitors, includes a polypropylene resin, and the film has a spacing value of (040) face of α-crystal measured by X-ray diffraction of 0.525 to 0.530 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.