Process for separating sulfonic acids from the reaction products obtained when parafins are reacted with sulfur dioxide, oxygen and water in the presence of ultra-violet light
US4288389A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1980 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Dec 1, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for separating sulfonic acids from the reaction product obtained by reacting paraffins with sulfuric acids, oxygen and water in the presence of ultra-violet light where an alcohol is used as an extractant. The reaction product is treated with an aromatic alcohol as the extractant where the general formula of the alcohol is: ##STR1## wherein: R.sup.1 is a phenyl group possibly substituted by halogen atoms and/or alkyl groups with 1 to 6 C atoms; PA0 R.sup.2 and R.sup.3 denote hydrogen; PA0 n is an integer from 1 to 3; and PA0 R.sup.2 may also be a methyl group when n=1. Three phases are formed with the center phase as the alcohol phase. The alcohol phase is isolated from the remaining phases and the sulfonic acids are separated from this center alcohol phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.