Method of purifying isosaccharinate
US7790134B1 · kind B1 · utility
3Cited by
2References
9Claims
0Family size
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Key dates
| Filing date | Apr 2, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Aug 30, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of purifying isosaccharinate by mixing sodium carbonate, potassium carbonate, sodium hydroxide or potassium hydroxide with calcium isosaccharinate, removing the precipitated calcium carbonate and adjusting the pH to between approximately 4.5 to 5.0 thereby removing excess carbonate and hydroxide to provide an acidic solution containing isosaccharinate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.