Bisphenol-A dianhydride-based polyimide matrix resins and method of preparation
US4988544A · kind A · utility
14Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 23, 1988 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Dec 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1064
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing high molecular weight highly thermal and oxidatively stable aryl polyimide compositions is provided which comprises reacting by application of heat, a mixture of bisphenol-A dianhydride, an aromatic diamine and a monoalkyl or dialkyl ester of a dicarboxylic acid or the corresponding anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.