Composite materials containing benzoxazines and method for making the same
US11566106B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 2, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jun 2, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/34
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A curable composition containing more than 80% by weight of a blend of benzoxazines, wherein the blend includes (A) one or more multifunctional benzoxazines and (B) a liquid, non-halogenated monofunctional benzoxazine. This composition has been found to be stable at high temperatures, e.g. 180° C.-250° C., and suitable for making composite materials using conventional techniques such as prepregging and liquid resin infusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.