Process for preparing a carbon fiber reinforced composite article which utilizes a polyimide matrix
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United States of America Patent
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Jul 26, 1983
Issued Date -
N/A
app pub date -
Jan 29, 1982
filing date -
Apr 18, 1980
priority date (Note) -
Expired
status (Latency Note)
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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.
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