Process of recovering aldehydes
US4792636A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for the recovery of an optionally substituted C.sub.7 to C.sub.17 aldehyde from a liquid hydroformylation product medium obtained by rhodium catalyzed hydroformylation of an optionally substituted C.sub.6 to C.sub.16 olefin which contains (i) a rhodium complex hydroformylation catalyst containing rhodium in complex combination with carbon monoxide and with a ligand, (ii) excess ligand, (iii) at least one optionally substituted C.sub.7 to C.sub.17 aldehyde, and (iv) aldehyde condensation products, which process comprises: PA0 (a) degassing said liquid hydroformylation medium; PA0 (b) passing the degassed liquid hydroformylation medium through an evaporation zone maintained under temperature and pressure conditions conducive to evaporation of said at least one C.sub.7 to C.sub.17 aldehyde; PA0 (c) recovering from the evaporation zone a liquid catalyst-containing stream; PA0 (d) cooling the catalyst-containing stream exiting the evaporation zone; PA0 (e) recovering a vaporous stream from the evaporation zone containing (i) at least one optionally substituted C.sub.7 to C.sub.17 aldehyde, (ii) ligand and (iii) a minor amount of said aldehyde condensation products;…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.