Process for preparing maleimide
    102.
    发明公开
    Process for preparing maleimide 失效
    制备马来酰亚胺的方法

    公开(公告)号:EP0153597A3

    公开(公告)日:1988-04-27

    申请号:EP85100904

    申请日:1985-01-29

    申请人: Ashland Oil, Inc.

    发明人: Hupp, Stephen S.

    CPC分类号: C07D207/448

    摘要: A process for the preparation of maleimide by the vapor phase oxvdehydrogenation of succinimide over an iron phosphate catalyst which may also contain one or more alkali metal and alkaline earth metal components is described.

    摘要翻译: 描述了通过将琥珀酰亚胺氧化还原氢氧化成还可含有一种或多种碱金属和碱土金属组分的磷酸铁催化剂制备马来酰亚胺的方法。

    Method for production of maleimides
    105.
    发明公开
    Method for production of maleimides 失效
    一种用于生产马来酰亚胺的过程。

    公开(公告)号:EP0165574A2

    公开(公告)日:1985-12-27

    申请号:EP85107397.3

    申请日:1985-06-14

    IPC分类号: C07D207/448

    CPC分类号: C07D207/448

    摘要: A method for the production of maleimides, which comprises subjecting maleinamic acids to ring-closure imidation in an organic solvent capable of forming an azeotrope with water in the presence of an acid catalyst at a temperature in the range of 120° to 250°C while removing the formed water in the form of an azeotrope with said organic solvent and thereafter purifying the produced maleimides.