Prepreg for making a composite having high elongation and heat resistance and process for making such composite with the prepreg
US4482660A · kind A · utility
13Cited by
2References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1983 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Jan 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A prepreg for making a composite is disclosed. The prepreg comprising reinforcing fibers impregnated with a resin composition comprising (A) an epoxy resin, (B) a reaction product of an epoxy resin and a butadiene-acrylonitrile copolymer having carboxyl groups on at least both terminals of the molecular chain of the copolymer, and (C) 4,4'-diaminodiphenylsulfone as a curing agent. A composite produced by curing this prepreg is high in both tensile elongation and heat resistance and is used with advantage as primary and secondary structural materials in aircraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.