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    • 21. 发明授权
    • Process for producing saturated aliphatic carboxylic acid amide
    • 饱和脂肪族羧酸酰胺的制造方法
    • US06291712B1
    • 2001-09-18
    • US08979802
    • 1997-11-26
    • Shinya SaihataMasaaki KatayamaHitoshi NakamuraToshiyuki Aizawa
    • Shinya SaihataMasaaki KatayamaHitoshi NakamuraToshiyuki Aizawa
    • C07C23102
    • C07C231/02C07C233/05
    • A process for producing a saturated aliphatic carboxylic acid amide, comprising reacting a saturated aliphatic carboxylic acid with ammonia to thereby obtain a saturated aliphatic ammonium carboxylate and subjecting the saturated aliphatic ammonium carboxylate to a dehydration reaction for obtaining a saturated aliphatic carboxylic acid amide, wherein the dehydration reaction of the saturated aliphatic ammonium carboxylate is conducted while supplying water to a reaction system in which the dehydration reaction is carried out. Preferably, water is continuously supplied to the reaction system so that the production of the saturated aliphatic carboxylic acid amide is carried out in a continuous manner and the amount of water present in a steady state ranges from 20 to 70 mol per 100 mol of a total of the saturated aliphatic carboxylic acid, the ammonia, the saturated aliphatic ammonium carboxylate, the saturated aliphatic carboxylic acid amide and the water. This process enables simplification of the production steps, ensures high operation efficiency, lowers production facility constructing and operating costs, reduces the amount of by-products and enables producing a high-purity carboxylic acid amide at a high selectivity, at a high yield and on an industrial scale.
    • 一种饱和脂肪族羧酸酰胺的制造方法,其包括使饱和脂肪族羧酸与氨反应,得到饱和脂肪族羧酸铵,并使饱和脂肪族羧酸铵进行脱水反应,得到饱和脂肪族羧酸酰胺,其中, 在向进行脱水反应的反应体系供给水的同时进行饱和脂肪族羧酸铵的脱水反应。 优选地,将水连续地供给到反应体系中,使得饱和脂肪族羧酸酰胺的生产以连续的方式进行,并且稳定状态下的水的量为每100摩尔总共为20至70摩尔 的饱和脂肪族羧酸,氨,饱和脂肪族羧酸铵,饱和脂肪族羧酸酰胺和水。 该方法能够简化生产步骤,确保高的运行效率,降低生产设施的构建和运行成本,减少副产物的量并且能够以高的选择性和高产率生产高纯度的羧酸酰胺 工业规模。