Fiber-reinforced phthalonitrile composite cured with low-reactivity aromatic amine curing agent
US6001926A · kind A · utility
18Cited by
17References
16Claims
0Family size
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Key dates
| Filing date | Oct 2, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2933
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber-reinforced phthalonitrile composite is made by impregnating or coating a fibrous material with a phthalonitrile prepolymer mixture containing a phthalonitrile monomer and an aromatic amine curing agent that is thermally stable and nonvolatile at a temperature up to about 375.degree. C., and that contains at least one electron withdrawing substituent effective to reduce the reactivity of the aromatic amine curing agent with the phthalonitrile monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.