Phenalkamine epoxy curing agents from methylene bridged poly(cyclohexyl-aromatic) amines and epoxy resin compositions containing the same
US11891476B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Oct 22, 2020 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Oct 22, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a new structural class of phenalkamine, phenalkamine curing agent compositions, methods of making such phenalkamine, and methods of making such compositions. The phenalkamine curing agent compositions of the present invention can be prepared by reacting cardanol with an aldehyde compound and a mixture of methylene bridged poly(cycloaliphatic-aromatic)amines. These curing-agent compositions may be used to cure, harden, and/or crosslink an epoxy resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.