Curing epoxy resin with N-cyanoethylated toluenediamines
US6759503B2 · kind B2 · utility
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1References
9Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 31, 2003 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C255/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides N-cyanoethylated toluenediamines (CNTDAs), processes for synthesizing them, and compositions containing them. In preferred embodiments, the CNTDAs are represented by the following formula: where the nitrogen atoms are ortho or meta to each other on the aromatic ring. The CNTDAs are particularly suitable for use as latent curing agents for epoxy resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.