Removal of alkyl alkanesulfonate esters from alkanesulfonic acids and other organic media
US7297813B2 · kind B2 · utility
1Cited by
4References
31Claims
0Family size
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Key dates
| Filing date | Aug 5, 2004 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jul 28, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods of removing alkyl alkanesulfonate esters from aqueous or anhydrous compositions are provided. The invention provides methods for the conversion of alkyl alkanesulfonate esters of the formula RSO3R′ to the corresponding acids of the formula RSO3H. The alkyl alkanesulfonate esters are present in an organic medium, which may contain significant amounts of water or which may be anhydrous or substantially anhydrous. In some embodiments, the invention provides methods for purifying aqueous or anhydrous alkanesulfonic acids by removing alkyl alkanesulfonate esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.