Eco-friendly process for recovery of pyridine and/or its derivatives
US8057643B2 · kind B2 · utility
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12References
9Claims
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Key dates
| Filing date | Nov 17, 2006 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process recovers of pyridine and/or its derivatives from their aqueous mass and/or manufacturing reaction mass by liquid-liquid extraction employing an alkyl acetate. The process further involves effective recovering and recycling of solvents from the aqueous phase and other waste obtained during the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.