Preparation of caprolactam from 6-aminocapronitrile
    2.
    发明授权
    Preparation of caprolactam from 6-aminocapronitrile 失效
    从6-氨基己腈制备己内酰胺

    公开(公告)号:US5693793A

    公开(公告)日:1997-12-02

    申请号:US707476

    申请日:1996-09-05

    CPC分类号: C07D201/12 C07D201/08

    摘要: A process for preparing caprolactam by cyclization of 6-aminocapronitrile in the presence of water at elevated temperature and in the presence or absence of a catalyst and a solvent, comprises a) removing from the cyclization reaction effluent ("reaction effluent I") caprolactam and all components boiling higher than caprolactam ("high boilers"), b) treating the high boilers of stage a) with phosphoric acid and/or polyphosphoric acid at from 200 to 350.degree. C. to obtain a reaction effluent II, and c) removing caprolactam formed and any 6-aminocapronitrile from reaction effluent II of stage b) to obtain separation from unconverted high boilers and acid used.

    摘要翻译: 在高温存在下和在存在或不存在催化剂和溶剂的情况下,通过6-氨基己腈的环化制备己内酰胺的方法包括:a)从环化反应流出物(“反应流出物I”)中除去己内酰胺和 所有组分沸点高于己内酰胺(“高锅炉”),b)用磷酸和/或多磷酸在200至350℃下处理阶段a)的高锅炉以获得反应流出物II,和c)除去 己内酰胺和来自阶段b)的反应流出物II的任何6-氨基己腈得到与未转化的高锅炉和酸的分离。

    Method for obtaining hexamethylene diamine from mixtures containing
hexamethylene diamine
    4.
    发明授权
    Method for obtaining hexamethylene diamine from mixtures containing hexamethylene diamine 有权
    从含有六亚甲基二胺的混合物中获得六亚甲基二胺的方法

    公开(公告)号:US6139693A

    公开(公告)日:2000-10-31

    申请号:US367070

    申请日:1999-08-09

    CPC分类号: C07C209/84 Y10S203/20

    摘要: A process for recovering hexamethylenediamine (I) from a mixture (II) including(I) hexamethylenediamine,(III) hexamethyleneimine,(IV) a compound selected from 2-aminomethylcyclopentylamine and 1,2-diaminocyclohexane,(V) an imine,(VI) adiponitrile and 6-aminocapronitrileincludes distilling(a) a mixture (II) to obtain(a1) a low boiling fraction (III),(a2) a medium boiling fraction (VII) (I), (IV) and (V), and(a3) a high boiling fraction (V) and (VI),(b) a mixture (VII) to obtain(b1) an overhead product (IV), and(b2) a mixture (VIII) (I) and (V) as bottom product, and(c) a mixture (VIII) to obtain(c1) (I) as overhead product, and(c2) a bottom product (V).

    摘要翻译: PCT No.PCT / EP98 / 00506 Sec。 371日期1999年8月9日 102(e)1999年8月9日PCT 1998年1月30日PCT PCT。 第WO98 / 34903号公报 日本1998年8月13日从含有(I)六亚甲基二胺,(III)六亚甲基亚胺,(Ⅳ)选自2-氨基甲基环戊胺和1,2-二氨基环己烷的化合物的混合物(II)中回收六亚甲基二胺(I)的方法,(V) (VI)己二腈和6-氨基己腈包括蒸馏(a)混合物(II)以获得(a1)低沸点馏分(III),(a2)中沸点馏分(VII)(I),(IV )和(V),(a3)高沸点馏分(V)和(VI),(b)混合物(VII)得到(b1)塔顶馏出物(IV),(b2)混合物 )(I)和(V)作为底部产物,和(c)得到(c1)(I)作为塔顶产物的混合物(VIII)和(c2)底部产物(V)。

    Method for producing hexamethylene diamine
    5.
    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)。