Process for the production of tertiary amine having long chain alkyl group

摘要

Tertiary monomethylamines having long chain alkyl groups are advantageously prepared from unsaturated aliphatic nitriles under a low pressure at a high yield by the steps of: (a) reducing the nitriles with hydrogen in the presence of a nickel hydrogenation catalyst at 200 DEG through 230 DEG C. and under a hydrogen pressure of 0 through 10 kg/cm2G, while the formed ammonia is removed; (b) reacting the resultant amines with a hydroxymethylation agent in the presence of the nickel catalyst at 150 DEG through 180 DEG C., while hydrogen is passed through the reaction zone under 0.3 through 7 kg/cm2G and the formed water is removed, and; (c) reducing the resultant tertiary amines with hydrogen in the presence of the nickel catalyst at 175 DEG through 210 DEG C. and under a hydrogen pressure of 5 through 10 kg/cm2G.