Process for the production of a water-insoluble nitrogenous organic base, starting from an aqueous solution of an alkali metal bicarbonate and the hydrochloride of the said base and process for the manufacture of sodium bicarbonate
US4677229A · kind A · utility
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10Claims
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Key dates
| Filing date | Jul 15, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Jul 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for the production of a water-insoluble nitrogeneous organic base, from an aqueous solution of alkali metal bicarbonate and the base hydrochloride, according to which the solution (11) is treated with a complement of the base hydrochloride (12), and the resultant liquid (18) is treated with a basic agent (30) capable of decomposing the hydrochloride. The invention is applied to the regeneration of the amine in the process for the manufacture of sodium bicarbonate by the amines method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.