Process for preparing polyarlethers
US6437080B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Aug 24, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for the preparation of a polymer composition comprising at least one aromatic or a mixture thereof, the process comprising: i) obtaining a reaction mixture comprising polymer precursors in a first fluid boiling in excess of 100 C.; ii) subjecting the reaction mixture to a first elevated temperature in excess of 100 C. to generate the alkali metal salts of polymer precursors and the polymer reaction products thereof; and iii) subjecting the reaction product mixture to at least a second temperature and isolating the reaction product in the form of a polymer composition which is substantially insoluble in a second fluid, form the first fluid which is substantially soluble in the second fluid, by contacting with an amount of second fluid; wherein the process is conducted in substantial absence of an effective amount of an azeotrope; novel intermediates thereof, polymer composition obtained thereby; resin formulation thereof; method for manufacture of composites thereof, and uses thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.