PROCESS FOR THE PREPARATION OF N,N-DIMETHYLAMINE

The present invention relates to a process for the preparation of N,N-dimethylamines by reaction of an aldehyde with dimethylamine and hydrogen under pressure and at elevated temperature in the presence of a hydrogenation catalyst containing Ni, Co, Cu, Mn, Fe, Rh, Pd and/or Pt. After unconverted di...

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Bibliographische Detailangaben
Hauptverfasser:	KNIEP, CLAUS, LUKAS, RAINER, KAMPMANN, DETLEF
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the preparation of N,N-dimethylamines by reaction of an aldehyde with dimethylamine and hydrogen under pressure and at elevated temperature in the presence of a hydrogenation catalyst containing Ni, Co, Cu, Mn, Fe, Rh, Pd and/or Pt. After unconverted dimethylamine and excess hydrogen have been separated off, formaldehyde or a formaldehyde-forming substance is added, and distillation is carried out.