Preparation of polyphenylene ether resins
US4385167A · kind A · utility
5Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | May 24, 1983 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved method for the preparation of polyphenylene oxides is disclosed. The method comprises using a diamine catalyst system comprising a cupric compound, coupling the phenolic monomer in the absence of methanol, and adding a promoter to the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.