Method for producing hexamethylene diamine
    3.
    发明授权
    Method for producing hexamethylene diamine 有权
    六亚甲基二胺的制备方法

    公开(公告)号:US06359178B1

    公开(公告)日:2002-03-19

    申请号:US09762798

    申请日:2001-02-13

    IPC分类号: C07C20948

    CPC分类号: C07C209/48 C07C211/12

    摘要: A process for catalytic hydrogenation of adiponitrile to hexamethylenediamine at elevated temperature and elevated pressure in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent comprises a) hydrogenating adiponitrile at from 70 to 220° C. and from 100 to 400 bar in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent to obtain a mixture comprising adiponitrile, 6-aminocapronitrile, hexamethylenediamine and high boilers until the sum total of the 6-aminocapronitrile concentration and the adiponitrile concentration is within the range from 1 to 50% by weight, based on the ammonia-free hydrogenation mixture, b) removing ammonia from the hydrogenation effluent, c) removing hexamethylenediamine from the remaining mixture, d) separating 6-aminocapronitrile and adiponitrile from high boilers individually or together, and e) returning 6-aminocapronitrile, adiponitrile or mixtures thereof into step a).

    摘要翻译: 在基于作为催化活性组分的元素铁和作为溶剂的氨的催化剂存在下,在升高的温度和升高的压力下将己二腈催化氢化为己二胺的方法包括在70-220℃和100-400巴下氢化己二腈 在基于作为催化活性成分的元素铁和作为溶剂的氨的催化剂存在下,得到包含己二腈,6-氨基己腈,六亚甲基二胺和高沸点剂的混合物,直到6-氨基己腈浓度和己二腈浓度的总和在范围内 基于无氨氢化混合物,从1至50重量%,b)从氢化流出物中除去氨,c)从剩余的混合物中除去六亚甲基二胺,d)分别或一起从高锅炉中分离6-氨基己腈和己二腈, 和),返回6-氨基己腈,己二腈或其混合物 n步骤a)。

    Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine
    10.
    发明授权
    Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine 失效
    从含有6-氨基己腈,己二胺和六亚甲基二胺的混合物中除去6-氨基己腈的方法

    公开(公告)号:US06972075B2

    公开(公告)日:2005-12-06

    申请号:US10311376

    申请日:2001-06-13

    摘要: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

    摘要翻译: 本发明涉及一种通过以下方法:从含有6-氨基己腈,己二腈和六亚甲基二胺的混合物中蒸馏除去6-氨基己腈,方法是a)从混合物中除去六亚甲基二胺,同时得到六亚甲基二胺含量少的混合物(I) 超过1wt。 - %,b)从混合物(I)中完全或部分地除去6-氨基己腈,同时得到其在蒸馏条件下具有较高沸点的物质中的含量为6-氨基己腈的混合物(II),并且不能通过二聚反应形成 当6-氨基己腈被热处理时小于1wt。 - %,和c)在获得六亚甲基二胺含量高于混合物(II)的混合物(Ⅳ)的同时,可能存在的六亚甲基二胺的混合物(II)完全或部分地除去,和(VI)的六亚甲基二胺含量 低于混合物(II)。