Loading patent…
AssigneeChemie Linz Aktiengesellschaft
InventorsCarlo Kos, Friedrich Hebesberger, Eduard Artner, Engelbert Kloimstein, Robert Haar, Ernst Lust
Estimating the term…
Process for preparing primary amines from aldehydes by mixing an aldehyde with a diluent, where in the case of an alcohol or of water as diluent the mixing temperature is at most 5.degree. C. to prevent the formation of the hemiacetal or the aldehyde hydrate, and bringing the mixture into contact with a mixture of ammonia, hydrogen and hydrogenation catalyst, whereby the formation of an imine is prevented, at temperatures of from 60.degree. to 180.degree. C. and pressures of from 20 to 60 bar, at least 15 mol of ammonia being used per mol of aldehyde group, and also an apparatus for carrying out the process.
Process for preparing primary amines from aldehydes in the presence of a diluent, ammonia, using at least 15 mol of ammonia per mol of aldehyde group, a hydrogenation catalyst, hydrogen and isolating the amine formed from the reaction mixture, wherein an aldehyde is mixed with a diluent, where in the case of an alcohol or of water as diluent the mixing temperature is at most 5.degree. C., so that no hemiacetal or aldehyde hydrate is formed and directly afterwards the mixture is practically simultaneously brought into contact with ammonia, hydrogen and the hydrogenation catalyst at temperatures of from 60.degree. to 180.degree. C. and pressures of from 20 to 60 bar.
Dependencies are inferred from the claim text.