Process for the production of ethylene glycol through the hydroformylation of glycol aldehyde
US4496781A · kind A · utility
12Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1984 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Apr 5, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation and purification of a glycol aldehyde intermediate which is later hydrogenated to ethylene glycol is disclosed. The process proceeds via the catalytic reaction of formaldehyde, carbon monoxide and hydrogen and utilizes a novel class of lipophilic rhodium phosphine amide catalysts and an effective solvent mixture, which enables efficient catalyst separation and recycle without the loss of a substantial amount of the expensive catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.