Process for separating sulfuric acid from sulfoxidation output
US4310473A · kind A · utility
4Cited by
8References
4Claims
0Family size
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Key dates
| Filing date | Mar 3, 1981 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Mar 3, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The process for separating sulfuric acid from the sulfoxidation output obtained when paraffins are reacted with sulfuric acid, oxygen and water in the presence of ultraviolet light, using an alcohol containing at least 5 C atoms, is improved by treating the sulfoxidation output with a 0.25 to 2.5 fold amount by weight of a mixture of PA0 (a) 40 to 95% by weight of alcohol, and PA0 (b) 5 to 60% by weight of paraffins and the aqueous phase formed thereby is separated with the sulfuric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.