Curable epoxy resin systems containing mixtures of amine hardeners and an excess of epoxide groups
US9688808B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fiber reinforced epoxy resin composites are produced using a specific epoxy resin system. The epoxy resin system contains at least one polyglycidyl ether of a polyphenol. The system also contains a hardener that contains a mixture of aminocyclohexanealkylamine and polyalkylene polyamine hardeners. The ratio of epoxy resin groups to amine hydrogen groups is from 1.05 to 1.50. The epoxy resin system contains a tertiary amine catalyst such as a tertiaryaminophenol, a benzyl tertiary amine or an imidazole compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.