PROCESS FOR PRODUCTION OF LACTAM
    7.
    发明公开
    PROCESS FOR PRODUCTION OF LACTAM 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON LACTAM

    公开(公告)号:EP1975155A1

    公开(公告)日:2008-10-01

    申请号:EP06832839.2

    申请日:2006-11-17

    CPC classification number: C07D201/08 C07D225/02

    Abstract: Disclosed is a process for production of a lactam (particularly, an industrially useful lactam, e.g., laurolactam) with high selectivity, comprising hydrogenating a cyclic dicarboxylic acid imide having a large of ring members (particularly, a 8-membered or more cyclic dicarboxylic acid imide) to produce a corresponding. The process is characterized by hydrogenating a 8-membered or more cyclic dicarboxylic acid imide in the presence of ruthenium of platinum. In the process, the ruthenium or platinum may be supported on activated charcoal and an alcohol may be used as a reaction solvent.

    Abstract translation: 公开了一种制备具有高选择性的内酰胺(特别是工业上可用的内酰胺)的方法,包括使具有大环成员的环状二羧酸酰亚胺(特别是8元以上的环状二羧酸 酰亚胺)生成相应的。 该方法的特征在于在铂的钌的存在下氢化8元或更多的环状二羧酸酰亚胺。 在此过程中,钌或铂可以负载在活性炭上,醇可用作反应溶剂。

    PROCESS FOR MAKING CAPROLACTAM
    9.
    发明公开
    PROCESS FOR MAKING CAPROLACTAM 有权
    己内酰胺生产工艺

    公开(公告)号:EP1858843A1

    公开(公告)日:2007-11-28

    申请号:EP06738306.7

    申请日:2006-03-15

    CPC classification number: C07D201/08

    Abstract: Lactams, in particular ϵ-caprolactam, are produced by the hydrolytic cyclization of aminonitriles, in particular 6-aminocapronitrile, in the vapor phase in a plurality of adiabatic fixed bed reaction zones arranged in succession wherein at least a portion of the heat of the exothermic reaction is removed between each of the successive reaction zones. Conducting the reaction in such a manner requires less capital for the reactor itself. It has also been found that the product exiting such a reaction system can be directly fed to a distillation unit without the need of additional cooling or storing.

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