发明授权
- 专利标题： Process for preparing 4-aminodiphenylamine
- 专利标题（中）： 制备4-氨基二苯胺的方法
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申请号： US13104900申请日： 2011-05-10
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公开(公告)号： US08686188B2公开(公告)日： 2014-04-01
- 发明人: Xiaogen Feng , Nongyue Wang , Xiaohui Mao , Ruibiao Yu , Qianwen Cheng , Renping Jiao
- 申请人： Xiaogen Feng , Nongyue Wang , Xiaohui Mao , Ruibiao Yu , Qianwen Cheng , Renping Jiao
- 申请人地址： CN Taizhou, Jiangsu Province
- 专利权人： Jiangsu Sinorgchem Technology Co., Ltd.
- 当前专利权人： Jiangsu Sinorgchem Technology Co., Ltd.
- 当前专利权人地址： CN Taizhou, Jiangsu Province
- 代理机构： Mei & Mark LLP
- 代理商 Manni Li
- 优先权： CN03148194 20030704; CN03148195 20030704; CN03148196 20030704; CN03148198 20030704; CN03148199 20030704; CN03148200 20030704; CN03148565 20030704; CN03148566 20030704
- 主分类号： C07C209/00
- 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.
公开/授权文献
- US20120053367A1 PROCESS FOR PREPARING 4-AMINODIPHENYLAMINE 公开/授权日：2012-03-01
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