Reduction of aldehydes in amine catalysts
US10766994B2 · kind B2 · utility
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Key dates
| Filing date | Jan 13, 2015 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Aug 23, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a non-cyclic amide substituted with an isocyanate reactive group, a guanidine substituted with an isocyanate reactive group, a polyether amine adducted with a urea compound or a guanidine compound, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.