Production of amines by hydrogenation of nitrile compounds
US8227642B2 · kind B2 · utility
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3References
14Claims
0Family size
Inventors
Key dates
| Filing date | Sep 13, 2007 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Nov 7, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C211/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing amines by the hydrogenation of nitrile compounds in the presence of a catalyst, notably a method for producing diamines by the continuous hydrogenation of dinitrile compounds in the presence of a Raney-metal catalyst, includes controlling the molar flow of nitrile compounds and the mass flow of catalyst in a hydrogenation piston reactor in order to minimize the occurrence of impurities and deterioration of the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.