Process for stripping carbamate from ion exchange resin
US10898891B2 · kind B2 · utility
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3References
22Claims
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Inventor
Key dates
| Filing date | Aug 20, 2015 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jun 1, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a preferred embodiment, there is provided a process for separating an amine compound or a conjugate acid thereof and a carbamate compound or a conjugate acid thereof from a mixture having the amine compound, the carbamate compound, carbon dioxide and at least one anionic contaminant salt using an anionic exchange column, the process including passing the mixture through the column to obtain a first effluent and passing through the column an extraction fluid to obtain a second effluent, where the extraction fluid most preferably includes carbonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.