Process for preparing a carbon fiber reinforced composite article which utilizes a polyimide matrix
US4395514A · kind A · utility
17Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1982 |
| Grant date | Jul 26, 1983 |
| Priority date | — |
| Expiry date | Jan 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides an improvement in a process for preparing carbon fiber reinforced polyimide compositions from a mixture of monomers by the application of heat in two stages. The improvement comprises incorporating a cyclic peroxyketal catalyst, such as 3,6,6,9,9,-pentamethyl-3-(ethylacetate)-1,2,4,5-tetraoxycyclononane, into the monomer mixture prior to reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.