Product, and method for producing stretched porous material
US11981762B2 · kind B2 · utility
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5References
7Claims
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Key dates
| Filing date | Mar 17, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Aug 7, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
To provide a modified PTFE excellent in heat resistance. The modified polytetrafluoroethylene comprises a polymer having units based on tetrafluoroethylene and a polymer having units based on a fluorine-free monomer, wherein the endothermic amount ratio R calculated by a prescribed method is at least 0.65.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.