Electrolytic process for manufacturing potassium peroxydiphosphate
US4663002A · kind A · utility
2Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Jul 29, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B1/28
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention provides a process to maintain the anolyte pH within a range of 1 pH unit while manufacturing potassium peroxydiphosphate on a commercial scale. The process comprises electrolyzing an alkaline anolyte containing potassium, phosphate, and hydroxyl ions at a platinum or noble metal anode optionally in the presence of a reaction promoter. The catholyte, an alkali metal hydroxide, is separated from the anolyte by at least two separating means, one separating means permeable to either anions or cations, but not both, and the other separating means permeable to an ion excluded by the first separating means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.