Process for producing polyphenylene ether
US4617372A · kind A · utility
2Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyphenylene ethers are produced by oxidative polymerization of phenols in the presence of a catalyst comprising the combination of divalent manganese salts, an oxine or derivatives thereof, an alkanolamine, and an alkaline compound. This catalyst has an increased polymerization activity and achieves a higher productivity. In addition, the catalyst enables the polymerization to conduct at relatively high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.