Method of manufacturing succinic acid and ammonium succinate solutions
US8034975B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 18, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | May 4, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/43
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method of manufacturing a highly pure ammonium succinate solution including the steps of (A) producing calcium succinate trihydrate by crystallization fermentation of a microorganism; (B) converting calcium succinate trihydrate to calcium succinate monohydrate by transition crystallization; (C) separating the calcium succinate monohydrate crystals; (D) substituting the calcium salt in the calcium succinate monohydrate with ammonium salt resulting in an ammonium succinate solution; and (E) removing the solid calcium carbonate from the ammonium succinate solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.