Process for crystallization of alkali metal bicarbonate salts
US6042622A · kind A · utility
4Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1996 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Jul 31, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alkali metal bicarbonate salts, e.g., sodium bicarbonate, are crystallized from aqueous solutions thereof in the presence of a crystal growth promoting amount of lecithin or lecithin containing compositions. Alkali metal bicarbonate salts include sodium bicarbonate, potassium bicarbonate and lithium bicarbonate. The process is described as providing increased amounts of large crystals and a narrower and more uniform crystal size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.