Polyarylether ketone copolymer
US11708457B2 · kind B2 · utility
0Cited by
9References
17Claims
0Family size
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Key dates
| Filing date | Oct 24, 2017 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Sep 12, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K7/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention pertains to certain copolymers (PEDEK/PEEK), comprising a majority of “PEDEK”-type recurring units, which, thanks to the predominance of PEDEK-type units, their structural homogeneity and regularity, and absence of chlorinated end groups, possess a suitable molecular structure and crystallization behaviour so as to deliver improved mechanical properties and outstanding chemical resistance, and which are useful in numerous fields of endeavours, including notably in the oil&gas industry, and more specifically for the manufacture of parts used in oil and gas extraction systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.