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    • 2. 发明授权
    • Preparation of both hexamethylene diamine and aminocapronitrile
    • 六亚甲基二胺和氨基己腈的制备
    • US07973192B2
    • 2011-07-05
    • US12090125
    • 2006-10-16
    • Philippe Leconte
    • Philippe Leconte
    • C07C255/00
    • C07C253/32C07C209/48C07C209/82C07C209/86C07C253/30C07C211/12C07C255/24
    • Hexamethylenediamine and aminocapronitrile are simultaneoussly produced by hemihydrogenation of adiponitrile, which includes a stage of separation of the hexamethylenediamine from the hydrogenate by distillation of the hexamethylenediamine, the distillation of the hexamethylenediamine being carried out from the hydrogenate containing a free acid and/or an alkali metal or ammonium acid salt, whereby a top fraction A recovered at the column top of the stage of distillation of the hexamethylenediamine is essentially crude hexamethylenediamine and a small amount of THA; the amount of THA (tetrahydroazepine) present in the crude hexamethylenediamine constitutes a small proportion of the THA present in the hydrogenate.
    • 六亚甲基二胺和氨基己腈通过己二腈的半氢化同时产生,其包括通过蒸馏六亚甲基二胺将六亚甲基二胺与氢化物分离的阶段,从含有游离酸和/或碱金属的氢化物中进行的六亚甲基二胺的蒸馏 或铵盐,由此在六亚甲基二胺的蒸馏阶段的塔顶回收的顶馏分A基本上是粗己二胺和少量的THA; 存在于粗六亚甲基二胺中的THA(四氢氮杂)的量占氢化物中存在的THA的一小部分。
    • 6. 发明申请
    • Process for the purification of lactams
    • 内酰胺纯化方法
    • US20080230368A1
    • 2008-09-25
    • US12155065
    • 2008-05-29
    • Daniel AmorosPhilippe LecontePierre Coqueret
    • Daniel AmorosPhilippe LecontePierre Coqueret
    • B01D3/34
    • C07D201/16C07D201/08Y10S203/90
    • A method and a plant are disclosed for purifying lactams, particularly lactams obtained by cyclizing hydrolysis of aminonitrile. The purification of ε-caprolactam obtained by cyclizing hydrolysis of aminocapronitrile is described which includes eliminating the ammonia from the reaction medium of the hydrolysis, then recovering the lactam from said medium in purified form. The recovery is carried out by performing at least a distillation of the lactam in the presence of a base producing optionally a fronts fraction comprising compounds more volatile than the lactam, a fraction comprising the lactam to be recovered to the degree of desired purity and a distillation tails comprising the lactam and compounds less volatile than the lactam. The distillation tails are treated by various processes such as evaporation in thin layers to recover the major part of the caprolactam and recycling the latter in the purification process.
    • 公开了一种用于纯化内酰胺,特别是通过环化氨基腈水解获得的内酰胺的方法和设备。 描述了通过环化氨基己腈水解获得的ε-己内酰胺的纯化,其包括从水解反应介质中除去氨,然后以纯化形式从所述介质中回收内酰胺。 回收是通过在碱的存在下至少进行内消旋而进行的,所述碱生产任选地含有比内酰胺更易挥发的化合物的前列馏分,包含待回收的内酰胺至所需纯度的馏分和蒸馏 尾部包含内酰胺和化合物比内酰胺更不易挥发。 蒸馏尾部通过各种方法处理,例如在薄层中蒸发以回收大部分己内酰胺并在纯化过程中回收己内酰胺。
    • 7. 发明授权
    • Methods for hydrogenating nitrile functions into amine functions
    • 用于氢化腈的方法用于胺官能团
    • US06790994B2
    • 2004-09-14
    • US10220821
    • 2003-01-10
    • Vincent BoschatPhilippe Leconte
    • Vincent BoschatPhilippe Leconte
    • C07C20948
    • C07C253/30C07C209/48C07C211/12C07C255/24
    • The present invention relates to a process for the hydrogenation of nitrile functional groups to amine functional groups. It relates more particularly to a process for the complete or partial hydrogenation of dinitrile compounds to diamine or aminonitrile compounds. The invention relates to a process for the hydrogenation of nitrile functional groups to amine functional groups using hydrogen in the presence of a hydrogenation catalyst and of a strong inorganic base preferably deriving from an alkali metal or alkaline earth metal. According to the invention, the process comprises a stage of conditioning the catalyst which consists in mixing the hydrogenation catalyst, a predetermined amount of strong inorganic base and a solvent in which the strong inorganic base is not very soluble. This solvent is an amine compound, such as hexamethylenediamine in the case of the hydrogenation of adiponitrile to HMD and/or aminocapronitrile.
    • 本发明涉及将腈官能团氢化成胺官能团的方法。 更具体地涉及二腈化合物完全或部分氢化为二胺或氨腈化合物的方法。本发明涉及使用氢气在氢化催化剂存在下将腈官能团氢化成胺官能团的方法,以及 优选衍生自碱金属或碱土金属的强无机碱。 根据本发明,该方法包括一种调节催化剂的步骤,该催化剂包括将氢化催化剂,预定量的强无机碱和强无机碱不易溶解的溶剂混合。 在己二腈加氢成HMD和/或氨基己腈的情况下,该溶剂是胺化合物,例如六亚甲基二胺。