Method for preparing a poly(ether sulfonimide or -amide) copolymer using cyclic oligomers
US8586700B2 · kind B2 · utility
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2References
10Claims
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Key dates
| Filing date | Oct 7, 2010 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Oct 7, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer using cyclic oligomers, and more particularly, to a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer by preparing a cyclic ether sulfone oligomer and a cyclic imide or amide oligomer and subjecting the cyclic ether sulfone oligomer and the cyclic imide or amide oligomer to ring-opening copolymerization in the presence of an alkali metal fluoride catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.