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    • 56. 发明授权
    • Continuous preparatin of tertiary aliphatic methyl amines
    • 叔脂肪族甲基胺的连续制备
    • US5091585A
    • 1992-02-25
    • US631844
    • 1990-12-21
    • Wei-Yang SuRobert L. Zimmerman
    • Wei-Yang SuRobert L. Zimmerman
    • B01J23/86C07B61/00C07C209/24C07C209/26C07C211/08
    • C07C209/26
    • A method for continuous production of tertiary aliphatic methyl amines, particularly fatty aliphatic methyl amines such as di-hydrogenated tallow methyl amine from fatty alkyl amines, such as di-hydrogenated tallow amine over a nickel catalyst has been discovered. The reaction gives high selectivity of tertiary methyl amine over the coproduced secondary amines. The reaction may be conducted continuously in the presence of hydrogen and a formaldehyde source. The formaldehyde source may be selected from the group consisting of formaldehyde alone, formalin, a solution of mixed formaldehyde and paraformaldehyde in methanol and water, trioxane and mixtures thereof. The nickel catalyst may be promoted with copper and/or chromium, in one embodiment.
    • 已经发现了通过镍催化剂连续生产叔脂肪族甲基胺,特别是脂肪族甲基胺如脂肪烷基胺如二氢化牛油胺的二氢化牛油甲胺的方法。 该反应使叔甲基胺的高选择性高于共生产的仲胺。 反应可以在氢气和甲醛源的存在下连续进行。 甲醛源可以选自单独的甲醛,福尔马林,甲醇和水中的混合甲醛和多聚甲醛的溶液,三恶烷及其混合物。 在一个实施方案中,镍催化剂可以用铜和/或铬促进。