Aromatic polyetherketones
US6909015B2 · kind B2 · utility
21Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to polyetherketones and to a process for the preparation of aromatic polyetherketones which process comprises: a) self-condensing a compound of formula (I) wherein n represents 0 or 1 in the presence of an alkyl or optionally substituted aryl sulphonic acid solvent and in the absence of phosphorous pentoxide; or b) condensing a compound of general formula (II) and a compound of general formula (III) wherein p and q independently represent 0 or 1, in the presence of an alkyl or optionally substituted aryl sulphonic acid solvent and in the absence of phosphorous pentoxide; or c) a combination of a) and b)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.