End-capped quinoxaline-containing hyperbranched aromatic poly(ether-ketones)
US6974857B1 · kind B1 · utility
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5References
4Claims
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Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Apr 14, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/0694
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An end-capped quinoxaline-containing hyperbranched ether-ketone polymer having repeating units of the formula: wherein n represents the degree of polymerization for the parent hyperbranched polymer, x represents the degree of endgroup functionalization, x has a value of 0.05 to 1.0, and G is selected from the group consisting of and alkyl having 2 to 16 carbon atoms, and a method for preparing the polymer are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.