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    • 60. 发明授权
    • Preparation of caprolactam
    • 己内酰胺的制备
    • US06683179B2
    • 2004-01-27
    • US10258941
    • 2002-10-29
    • Peter BasslerDieter BaumannRolf-Hartmuth FischerEberhard FuchsJohann-Peter MelderFrank Ohlbach
    • Peter BasslerDieter BaumannRolf-Hartmuth FischerEberhard FuchsJohann-Peter MelderFrank Ohlbach
    • C07D20108
    • C07D201/08
    • A process for the preparation of caprolactam is provided, wherein a) a mixture (I) containing 6-aminocapronitrile and water is reacted in the gas phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammonia, water, high-boiling components and low-boiling components, b) ammonia is then removed from the mixture (II) to give a mixture (III) containing caprolactam, water, high-boiling components and low-boiling components, c) water is then removed from the mixture (III) to give a mixture (IV) containing caprolactam, high-boiling components and low-boiling components, and d) a solid (V) containing caprolactam is then obtained from the mixture (IV) by crystallization, the proportion by weight of caprolactam in the solid (V) being greater than in the mixture (IV).
    • 提供了制备己内酰胺的方法,其中a)含有6-氨基己腈和水的混合物(I)在催化剂存在下在气相中反应,得到含己内酰胺,氨,水的混合物(II) ,高沸点组分和低沸点组分,b)然后从混合物(II)中除去氨,得到含有己内酰胺,水,高沸点组分和低沸点组分的混合物(III),c)然后将水 从混合物(III)中除去,得到含有己内酰胺,高沸点组分和低沸点组分的混合物(IV),然后通过结晶从混合物(IV)获得含有己内酰胺的固体(V),比例 的固体(V)中的己内酰胺的量大于混合物(IV)中的。