Dianhydride and polyimide
US9416229B2 · kind B2 · utility
1Cited by
21References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A dianhydride and a polyimide formed by the same are provided. The dianhydride has a chemical structure represented below:wherein Ar is a fluorene-containing group. The dianhydride can be polymerized with a diamine to form a polyimide with a repeating unit of a chemical formula:wherein Ar is the fluorene-containing group, and n is a positive integer from 1 to 5. The polyimide simultaneously has excellent thermal stability and hot workability, and can therefore be applied in several industries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.