Prepregs of curable epoxy resin compositions with 9,9-Bis (4-aminophenyl) fluorenes as curatives
US6007917A · kind A · utility
32Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31511
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Curable epoxy resin compositions, preferably solvent-free, wherein a fluorene amine curative is partially melt dissolved and partially dispersed as a solid in at least one aromatic polyepoxide. The compositions provide prepregs which exhibit tack with surprisingly good shelf life properties. Cured composites comprising the prepregs are also provided. The cured composites exhibit little resin migration and glass transition temperatures that are comparable to those of cured neat resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.