High molecular weight poly(2,6-dimethyl-1,4-phenylene ether) and process therefor
US8025158B2 · kind B2 · utility
11Cited by
19References
25Claims
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Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A poly(2,6-dimethyl-1,4-phenylene ether) having a high molecular weight and a reduced content of low molecular weight species can be prepared by a method that includes specific conditions for the oxidative polymerization, chelation, and isolation steps. The poly(2,6-dimethyl-1,4-phenylene ether) is particularly useful for the fabrication of fluid separation membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.