Fluoroelastomers with perfluorinated thermoplastic fillers
US12134669B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 30, 2022 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Jun 30, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fluoroelastomers containing at least 25 weight percent perfluorinated thermoplastic fillers are described. The perfluorinated thermoplastic fillers comprise a first perfluorinated thermoplastic filler having a first d50 particle size of 10 to 250 nanometers, and a second perfluorinated thermoplastic filler having a second d50 particle size of 5 to 500 micrometers. The first thermoplastic filler may be obtained from a latex while the second thermoplastic filler may be obtained as a dry powder. Methods of making such materials and cured articles prepared from them are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.