Process for isolation and purification of polyphenylene ethers
US4088634A · kind A · utility
4Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Dec 9, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the recovery of polyphenylene ethers comprises precipitation with a "wet" acetone. In a preferred feature, the metallic catalyst from a polymerization mixture is simultaneously removed by use of a chelating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.