Process for preparing 4-aminodiphenylamine
    1.
    发明授权
    Process for preparing 4-aminodiphenylamine 有权
    制备4-氨基二苯胺的方法

    公开(公告)号:US08686188B2

    公开(公告)日:2014-04-01

    申请号:US13104900

    申请日:2011-05-10

    IPC分类号: C07C209/00

    摘要: A method for refining an organic composition containing 4-aminodiphenylamine, aniline, azobenzene, and phenazine, having the steps of feeding the organic composition to a first rectification column, producing a first effluent composition containing aniline, azobenzene, phenazine, and a small amount of 4-aminodiphenylamine at the top of the first rectification column and a second effluent composition containing crude 4-aminodiphenylamine at the bottom of the first rectification column, feeding the second effluent composition to a second rectification column, and producing a 4-aminodiphenylamine composition at the top of the second rectification column and a residual composition at the bottom of the second rectification column.

    摘要翻译: 一种精制含有4-氨基二苯胺,苯胺,偶氮苯和吩嗪的有机组合物的方法,具有将有机组合物进料到第一精馏塔中的步骤,制备含有苯胺,偶氮苯,吩嗪和少量 第一精馏塔顶部的4-氨基二苯胺和在第一精馏塔底部含有粗4-氨基二苯胺的第二流出物组合物,将第二流出物组合物进料到第二精馏塔,并在第二精馏塔中产生4-氨基二苯胺组合物 第二精馏塔的顶部和第二精馏塔底部的残留组成。