Separation of aromatic aldehydes
US9018421B2 · kind B2 · utility
2Cited by
4References
22Claims
0Family size
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Key dates
| Filing date | Jul 17, 2009 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jan 23, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for separating and recovering an aromatic aldehyde from a mixture thereof that also contains tar and light and heavy impurities, includes feeding the liquid flow containing this mixture into an evaporator, vaporizing the mixture in order to separate, on the one hand, a gaseous flow containing the aromatic aldehyde, the light impurities, the heavy impurities that can be vaporized at the selected evaporation temperature and pressure and, on the other hand, a liquid flow essentially containing the tar, and recovering the aromatic aldehyde from the separated gaseous flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.