Bis (difluoromaleimide) capped propolymers and polymers
US4173700A · kind A · utility
15Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1978 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Jun 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/123
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
End-capping an aromatic diamine or a precursor formed by reaction of an aromatic diamine with an aromatic dianhydride with difluoromaleic anhydride yields prepolymers which thermally cure at temperatures from about 150.degree. to about 200.degree. C. to form polymers which display long-term thermal stability at temperatures up to 300.degree. C. and more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.