Electrolytic process for manufacturing potassium peroxydiphosphate
US4626327A · kind A · utility
3Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Jun 6, 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 in the desired range 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 a separating means permeable to anions permitting hydroxyl ions to be transferred into the anolyte thereby maintaining the pH of the anolyte in the desired range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.