Generation of organosulfonic acid from its salts
US6187169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Apr 8, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C1/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A procedure for the generation of organosulfonic acids from solutions of corresponding metal organosulfonate compounds by electrowinning, electrolytically driven hydrolysis or chemically driven hydrolysis is described. Appropriate organosulfonate compounds include the water soluble salts of alkanesulfonic and aromatic sulfonic acids which incorporate metals from Group VIB, VIIB, VIIIB, IB, IIB or VA of the periodic table. The electrowinning and electrolytic techniques described can be applied in divided or undivided cells and can be operated in continuous fashion to provide the greatest efficiency. Hydrolysis based methods can employ either anodic oxidation or oxidation both of which function to oxidize the metal cation(s) present to hydrolytically unstable higher oxidation states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.