Process for purification of epsilon-caprolactam
    7.
    发明公开
    Process for purification of epsilon-caprolactam 失效
    Verfahren zur Reinigung von Epsilon己内酰胺。

    公开(公告)号:EP0641778A1

    公开(公告)日:1995-03-08

    申请号:EP94306137.4

    申请日:1994-08-19

    IPC分类号: C07D201/16

    CPC分类号: C07D201/16

    摘要: The invention provides a process for producing high quality ε-caprolactam which comprises allowing crude ε-caprolactam obtained by gas phase Beckmann rearrangement of cyclohexanone oxime to contact with hydrogen at 100-200°C in the presence of a hydrogenation catalyst.

    摘要翻译: 本发明提供了一种生产高品质ε-己内酰胺的方法,其包括在氢化催化剂存在下,使得通过环己酮肟气相贝克曼重排获得的粗ε-己内酰胺在100-200℃下与氢气接触。

    Process for producing a high purity caprolactam
    8.
    发明公开
    Process for producing a high purity caprolactam 失效
    Verfahren zur Herstellung von hochreinem己内酰胺。

    公开(公告)号:EP0570110A1

    公开(公告)日:1993-11-18

    申请号:EP93302948.0

    申请日:1993-04-15

    IPC分类号: C07D201/16

    CPC分类号: C07D201/16

    摘要: A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected

    (1) to mixing, while stirring, with at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons to form a liquid-liquid , two-layer liquid mixture, and then crystallizing caprolactam out of the liquid mixture;
    (2) to mixing with both at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons, and water to form a liquid mixture, separating the liquid mixture into a hydrocarbon layer and a water layer, and then recovering caprolactam from the water layer; or
    (3) to distillation in the co-presence of at least one aliphatic saturated hydrocarbon of 10 to 18 carbon atoms.

    摘要翻译: 公开了一种制备高纯度己内酰胺的方法,其中通过环己酮肟的催化重排获得的粗己内酰胺在搅拌下与至少一种选自脂族烃和脂环族烃的烃进行混合 形成液液两层液体混合物,然后从己烷溶液中混合出己内酰胺; (2)与选自脂族烃和脂环族烃的至少一种烃和水混合以形成液体混合物,将液体混合物分离成烃层和水层,然后从其中回收己内酰胺 水层; 或(3)在至少一种10至18个碳原子的脂族饱和烃的共存下进行蒸馏。

    Method for inhibiting thermal decomposition of cycloalkanone oximes
    9.
    发明公开
    Method for inhibiting thermal decomposition of cycloalkanone oximes 失效
    Verfahren zur Verhinderung thermischer Zersetzung von Cycloalkanonoximen。

    公开(公告)号:EP0550965A2

    公开(公告)日:1993-07-14

    申请号:EP92310820.3

    申请日:1992-11-26

    IPC分类号: C07C249/14 C07C251/44

    CPC分类号: C07C249/14

    摘要: Thermal decomposition of cycloalkanone oximes is inhibited by allowing nitrogen-containing compounds represented by the following formula (1) to coexist with the cycloalkanone oximes:



            NR₁R₂R₃   (1)



    (wherein R₁, R₂ and R₃ each represents a hydrogen atom or a lower alkyl group).

    摘要翻译: 通过使由下式(1)表示的含氮化合物与环烷酮肟共存,可以抑制环烷酮肟的热分解:NR1R2R3(1>(其中R1,R2和R3各自表示氢原子或低级烷基) 。