公开(公告)号：US07235694B2

公开(公告)日：2007-06-26

申请号：US11477954

申请日：2006-06-30

申请人： Xiaogen Feng ,  Nongyue Wang ,  Xiaohui Mao ,  Ruibiao Yu ,  Qianwen Cheng

发明人： Xiaogen Feng ,  Nongyue Wang ,  Xiaohui Mao ,  Ruibiao Yu ,  Qianwen Cheng

IPC分类号： C07C209/00

CPC分类号： C07C209/24 ,  B01D1/065 ,  C07C209/02 ,  C07C209/36 ,  C07C209/38 ,  C07C209/86 ,  Y02P20/584 ,  C07C211/56 ,  C07C211/54

摘要： A process for preparing 4-aminodiphenylamine having the steps of reacting nitrobenzene and aniline in the presence of a complex base catalyst, hydrogenating the reaction mixture with hydrogen, a powdery composite catalyst, and a hydrogenation solvent; separating, recovering, and reusing the complex base catalyst and the powdery composite catalyst from the reaction mixture; separating, recovering, and reusing aniline, and optionally water, from the the reaction mixture; refining the reaction mixture to obtain 4-aminodiphenylamine. The complex base catalyst comprises tetraalkyl ammonium hydroxide, and tetraalkyl ammonium salt.

摘要翻译： 一种制备4-氨基二苯胺的方法，其步骤是在复合碱催化剂存在下使硝基苯和苯胺反应，用氢氢化反应混合物，粉末复合催化剂和氢化溶剂; 从反应混合物中分离，回收和再利用复合碱催化剂和粉末复合催化剂; 从反应混合物中分离，回收和再利用苯胺和任选的水; 精制反应混合物得到4-氨基二苯胺。 复合碱催化剂包括四烷基氢氧化铵和四烷基铵盐。