Method for producing a curing agent for low-emission epoxy resin compositions
US11225588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2018 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Aug 18, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/5033
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a curing agent for epoxy resins, in which an amine mixture including at least one parent amine of the formula (I) and at least one alkylated amine of the formula (II) is reacted or adducted with at least one glycidyl ether of the formula (III). The amine mixture is especially a reaction mixture from the partial alkylation of the amine of the formula (I). The process described enables, with low energy expenditure and high space-time yield, curing agents of low odor, low toxicity, low viscosity and high reactivity for epoxy resins and epoxy resin products that cure rapidly at ambient temperatures and especially also under cold conditions and at the same time enable high-quality coatings having an even, shiny surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.