Recovery of hydrogen peroxide
US5194067A · kind A · utility
2Cited by
16References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided whereby the hydrogen peroxide-containing oxidate from methyl benzyl alcohol oxidation is extracted with water and with ethyl benzene extractive solvent and an aqueous hydrogen peroxide phase is separated from an ethyl benzene solvent phase which also contains methyl benzyl alcohol and acetophenone, the improvement being that ethyl benzene is introduced into the extraction zone below the point of introduction of the oxidate, thus avoiding the possibility of formation of an aqueous hydrogen peroxide phase concentrated to a hazardous degree in hydrogen peroxide in the extraction zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.