Insulating film
US10438746B2 · kind B2 · utility
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4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2010 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a highly insulating film having excellent electrical characteristics (breakdown voltage), heat resistance, and handling properties such as windability and processability. The highly insulating film is a biaxially stretched film made of a styrene polymer having a syndiotactic structure as a main component. The highly insulating film contains specific inert fine particles A, antioxidant, and polymer Y having a glass transition temperature Tg by DSC of 130° C. or more each in a specific amount, and has a refractive index in the thickness direction of 1.5750 or more and 1.6350 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.