VERFAHREN ZUR HERSTELLUNG VON TERTIAEREN N,N-DIMETHYLAMINEN

A process for the preparation of tertiary N,N-dimethylamines by reaction of primary amines with formaldehyde and hydrogen as starting substances under pressure and at elevated temperature on a nickel- containing hydrogenation catalyst in the liquid phase. The hydrogenation catalyst is suspended in a...

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Bibliographic Details
Main Authors WEBER,JUERGEN,.DR, KAMPMANN,DETLEF,.DR, KNIEP,CLAUS
Format Patent
LanguageGerman
Published 22.06.1989
Subjects
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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Summary:A process for the preparation of tertiary N,N-dimethylamines by reaction of primary amines with formaldehyde and hydrogen as starting substances under pressure and at elevated temperature on a nickel- containing hydrogenation catalyst in the liquid phase. The hydrogenation catalyst is suspended in a solvent and the nickel concentration is 0.1 to 10% by weight relative to primary amine to be employed. The starting substances are introduced into the catalyst suspension separately from one another, but simultaneously, at 80 to 150 DEG C and 1 to 15 MPa with mixing, and reacted to give tertiary N,N-dimethylamines in one reaction step.
Bibliography:Application Number: DE19873741726