Patent ID: 9688646
Date: 2017-06-27
CPC Classifications: C07C,C07D

Claim:
1. A process for producing a primary or a secondary methylated N-methyl or N,N-dimethyl amines comprising reacting a primary or a secondary amine compound as a starting material, carbon dioxide as a methylating agent, and hydrogen gas as a reducing agent in a reaction medium in a sealed reactor for 6 to 48 hours at a reaction temperature of 80° C. to 180° C. in the presence of a composite catalyst to provide the primary or the secondary methylated N-methyl or N,N-dimethyl amines, wherein the composite catalyst is formed of oxides of at least two metals, or of an oxide of at least one metal and at least another metal element, each of said metals or metal element is selected from the group consisting of aluminum, bismuth, zinc, tin, gold, silver, copper, nickel, palladium, platinum, iridium, rhodium, cobalt, iron, ruthenium, osmium, manganese, rhenium, chromium, molybdenum, tungsten, vanadium, titanium, zirconium, lanthanum, yttrium, cerium, magnesium, calcium, and barium, wherein the primary or secondary amine compound is an aliphatic amine having a structure of  wherein R  wherein R