Thermoplastic-toughened cyanate ester resin composites with low heat release properties
US8404777B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24132
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Composite materials that contain thermoplastic-toughened cyanate ester resins as the resin matrix. The composite materials exhibit low levels of heat release when burned. The matrix resins are composed of from 50 to 80 weight percent of a cyanate ester resin component. The matrix resin composition also includes from 10 to 40 weight percent of a thermoplastic blend that is composed of polyetherimide and polyamideimide. The epoxy resin composition further includes from 1 to 10 weight percent of a curative agent. The composite materials may be used for primary structures in aircraft and other load-bearing structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.