Preparation of glyoxal from ethylene glycol
US4282374A · kind A · utility
6Cited by
4References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 5, 1979 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Jul 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of glyoxal by vapor phase oxidation of ethylene glycol with oxygen over a copper-containing oxidation catalyst at an elevated temperature and in the presence of a phosphorus compound which is volatile under the reaction conditions, the amount of phosphorus (calculated as P) being from 1 to 100 ppm, based on the weight of ethylene glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.