Process for the production of tertiary amine having long chain alkyl group
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United States of America Patent
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Feb 3, 1981
Grant Date -
N/A
app pub date -
Jul 3, 1979
filing date -
Jul 4, 1978
priority date (Note) -
Expired
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Abstract
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.degree. through 230.degree. C. and under a hydrogen pressure of 0 through 10 kg/cm.sup.2 G, while the formed ammonia is removed; (b) reacting the resultant amines with a hydroxymethylation agent in the presence of the nickel catalyst at 150.degree. through 180.degree. C., while hydrogen is passed through the reaction zone under 0.3 through 7 kg/cm.sup.2 G and the formed water is removed, and; (c) reducing the resultant tertiary amines with hydrogen in the presence of the nickel catalyst at 175.degree. through 210.degree. C. and under a hydrogen pressure of 5 through 10 kg/cm.sup.2 G.
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