Tetrafluoroethylene/hexafluoropropylene copolymer, and electric wire
US11021556B2 · kind B2 · utility
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Key dates
| Filing date | Jan 30, 2015 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Jun 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/445
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a tetrafluoroethylene/hexafluoropropylene copolymer which is less likely to form a lump, or is less likely to form a large lump even if a lump is formed, during the formation of an electric wire. The tetrafluoroethylene/hexafluoropropylene copolymer has a melt flow rate measured at 372° C. of 35.0 to 45.0 g/10 minutes and a swell of −8.0% to 5.0%, the sum of the numbers of —CF2H groups and unstable end groups being 120 or less per 1×106 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.