Hydrogenation of aromatic amines
    24.
    发明授权
    Hydrogenation of aromatic amines 失效
    芳香胺的氢化

    公开(公告)号:US3914307A

    公开(公告)日:1975-10-21

    申请号:US42899673

    申请日:1973-12-27

    发明人: MASSIE STEPHEN N

    CPC分类号: C07C209/72

    摘要: Aromatic amines are hydrogenated by treatment with an atmosphere of a hydrogen-containing gas in the presence of a catalyst system comprising a metal independently selected from Group VIII of the Periodic Table dispersed on an inorganic oxide support and a polyheterocyclic amine having at least one nitrogen atom in the bridgehead position.

    摘要翻译: 在含有独立地选自分散于无机氧化物载体上的元素周期表Ⅷ的金属的催化剂体系和具有至少一个氮原子的多杂环胺的存在下,通过用含氢气体气氛进行处理来芳族胺氢化 在桥头位置。

    Separation of diamine isomers
    26.
    发明授权
    Separation of diamine isomers 失效
    DIAMINE异构体的分离

    公开(公告)号:US3767707A

    公开(公告)日:1973-10-23

    申请号:US3767707D

    申请日:1971-10-04

    发明人: CLEARY J

    IPC分类号: C07C87/36

    CPC分类号: C07C405/00

    摘要: A FRACTIONAL CRYSTALLIZATION METHOD FOR SEPARATING A MIXTURE OF CID-AND TRANS-DIAMINES OR AN AQUEOUS SOLUTION OF DIACID SALTS OF CIS-AND TRANS-DIAMINES INTO AT LEAST TWO FRACTIONS WITH AT LEAST ONE OF SAID FRACTIONS HAVING A HIGHER CONTENT OF TRANS-ISOMER. SEPARATION IS EFFECTED IN AN AQUEOUS SOLUTION HAVING A WATER TO DIACID SALT RATIO IN THE RANGE OF ABOUT 0.5 TO ABOUT 10 BY WEIGHT, CAUSING A PRECIPITATE TO FORM BY LOWERING THE TEMPERATURE OF THE AQUEOUS SOLUTION, AND SEPARATING THE PRECIPITATED FRACTION HAVING THE HIGHER CONTENT OF TRANS-ISOMER. THE FRACTION WHICH IS IN SOLUTION WHICH HAS A HIGHER CONTENT OF THE CIS-ISOMER THAN THE ORIGINAL CAN ALSO BE RECOVERED AND USED IN SUITABLE APPLICATIONS.