Addition curable phenyl-quinoxaline compositions and their synthesis
US3966729A · kind A · utility
16Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | May 19, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | May 19, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/0694
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An aromatic bis(o-diamine) is reacted with an aromatic bisbenzil to provide a benzil end-capped quinoxaline oligomer which is then reacted with 4-(3-ethynylphenoxy)orthophenylene diamine to give an ethynyl terminated polyquinoxaline. Because the polyquinoxalines can be cured to provide thermally stable polymer compositions having superior mechanical properties, the compositions are particularly suitable for use in the fabrication of reinforced composite structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.