Diamine compound, polyimide precursor using same, and polyimide film
US11952343B2 · kind B2 · utility
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4References
15Claims
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Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Sep 15, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a novel diamine having a structure of comprising an intramolecular imide group, and further comprising aromatic cyclic groups linked by an ester group to both sides of the imide group. When the novel diamine is used as a polymerizable component for preparing a polyimide, a polyimide film having remarkably improved mechanical and thermal properties while maintaining optical properties can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.