Hyperbranched ether-ketone co-polymers
US6743889B1 · kind B1 · utility
3Cited by
1References
4Claims
0Family size
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Key dates
| Filing date | Jul 10, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Aug 28, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/4012
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel ether-ketone hyperbranched co-polymers are prepared by co-polymerizing 3,5-bis(4-fluorobenzoyl)phenol and 4-fluoro-4′-hydroxybenzophenone. The resulting copolymer has repeating units of the formula: wherein n has a value of 0.25 to 0.99.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.