Multifunctional benzoxazines and composite materials incorporating the same
US9822219B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Dec 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable resin composition containing a blend of multifunctional benzoxazines, and composite materials derived therefrom. The benzoxazine blend contains the combination of (A) a difunctional benzoxazine component and (B) a multifunctional benzoxazine component with functionality of greater than 2. Cured matrix resins and cured composite materials containing such benzoxazine blend exhibit a significant retardation in the rate of organic solvent uptake as compared to the same cured matrix resins and composite materials without component (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.