Poly(ether ketone ketone) (PEKK) composites
US12297321B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jun 17, 2019 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Oct 17, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly(ether ketone ketone) (PEKK) composites include reinforcing fibers in a PEKK polymer matrix that includes a PEKK polymer. It was surprisingly discovered that by washing unneutralized PEKK polymer powder with an acid or base, the melt stability of the PEKK polymers can be improved, as compared with PEKK polymers prepared by conventional methods. The PEKK composites are especially well-suited for fabrication of thick composite parts where melt stability is especially important.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.