PROCESS FOR PREPARATION OF N-METHYL-ALKYL AMINES

1,245,784. Reductive amminatian catalysts. HENKEL & CIE G.m.b.H. 6 Dec., 1968 [7 Dec., 1967], No. 57942/68. Heading B1E. [Also in Division C2] Oxidic Zn-Al or Zn-Cr catalysts in lump form are used in a process for the preparation of N-methyl-amines wherein a mono- or dicarboxylic acid, which doe...

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1. Verfasser:	HORST RUTZEN
Format:	Patent
Sprache:	eng
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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Zusammenfassung:	1,245,784. Reductive amminatian catalysts. HENKEL & CIE G.m.b.H. 6 Dec., 1968 [7 Dec., 1967], No. 57942/68. Heading B1E. [Also in Division C2] Oxidic Zn-Al or Zn-Cr catalysts in lump form are used in a process for the preparation of N-methyl-amines wherein a mono- or dicarboxylic acid, which does not form an internal anhydride under the reaction conditions, is hydrogenated at 200-400 C and 50-400 atmospheres pressure in the presence of an excess of mono- and/or dimethylamine or of methanol and ammonia from which said amines may be formed. The catalysts used in the Examples are prepared (a) by mixing pulverulent ZnO and Al(OH) 3 in water to give a paste which is dried, ground mixed with graphite and moulded into tablets and (b) by mixing ZnO and Cr 2 O 3 in water to a paste which is dried, ground, mixed with graphite and moulded into tablets, then reduced with H 2 .