Hardeners for epoxy resins, which comprise pyridinyl groups
US9394399B2 · kind B2 · utility
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2References
18Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 8, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Feb 20, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to hardeners for epoxy resins, which contain secondary amino groups having pyridinyl groups. They harden surprisingly quickly together with epoxy resins even under cold and humid conditions and without producing blushing to give films with a high degree of hardness, the highest degrees of hardness being obtained with a surprisingly low amount of hardener required. They are especially suitable for low-emission coatings with high resistance requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.