Process for removing impurities in an oxidation mixture
US3950431A · kind A · utility
2Cited by
2References
12Claims
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Key dates
| Filing date | Sep 20, 1973 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Sep 20, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C407/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Impurities, that is, by-products, in an oxidation product solution obtained by oxidation of diisopropylbenzene by molecular oxygen or in the oxidation product solution freed from diisopropylbenzene dihydroperoxide, are removed by extracting the by-products such as carbinols, ketones and styrenes from the solution with a mixture of an aqueous alkaline solution and at least one of alcohols having 1 to 3 carbon atoms such as methanol, ethanol, and isopropanol, as an extracting reagent at a temperature of 20.degree. to 80.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.