Bis(benzoxazinyl)phthalimidine and associated curable composition and composite
US10487077B1 · kind B1 · utility
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45References
14Claims
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Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/357
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A bis(benzoxazinyl)phthalimidine has the structure wherein R1, R2, R3, R4, j, and k are defined herein. The bis(benzoxazinyl)phthalimidine is useful as a component of a curable composition. It exhibits a high melting temperature and a high exotherm onset temperature. Also described is a composite that includes a reinforcing filler and the curing product of the bis(benzoxazinyl)phthalimidine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.