High heat copolyimides, articles prepared therefrom, and methods of manufacturing copolyimide articles
US10899887B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | May 9, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | May 9, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolyimide includes the reaction product of an aromatic dianhydride component including a substituted or unsubstituted pyromellitic dianhydride or a functional derivative thereof and an aromatic bis(ether phthalic anhydride) or a functional derivative thereof, and an organic diamine component comprising a substituted or unsubstituted phenylene diamine and a diaminodiphenyl sulfone. Articles and compositions including the copolyimides and methods of manufacturing a polyimide film are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.