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公开(公告)号：US5359141A
公开(公告)日：1994-10-25
申请号：US863938
申请日：1992-04-06
IPC分类号： B01J27/02 , B01J27/10 , B01J27/16 , B01J31/02 , B01J31/04 , C07B61/00 , C07C209/78 , C07C209/82 , C07C211/50 , C07C209/84
CPC分类号： C07C209/78 , Y02P20/584
摘要： The invention relates to an improved process for the production of polynuclear aromatic polyamines by condensation of aniline with formaldehyde in the presence of water and acidic catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent, the acid catalyst accumulating in the aqueous phase of the extraction step being reused.
摘要翻译： 本发明涉及通过在水和酸性催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取反应混合物进行处理，酸催化剂在水相中积聚 的提取步骤被重复使用。
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公开(公告)号：US5196591A
公开(公告)日：1993-03-23
申请号：US863613
申请日：1992-04-06
IPC分类号： B01J27/08 , C07B61/00 , C07C209/78 , C07C209/82 , C07C211/50 , C07C211/54
CPC分类号： C07C209/78 , Y02P20/584
摘要： The invention relates to an improved process for the production of polynuclear aromatic polyamines by condensation of aniline with formaldehyde in the presence of water and acidic catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent, the acid catalyst accumulating in the aqueous phase of the extraction step being reused.
摘要翻译： 本发明涉及通过在水和酸性催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取反应混合物进行处理，酸催化剂在水相中积聚 的提取步骤被重复使用。
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公开(公告)号：US4914236A
公开(公告)日：1990-04-03
申请号：US185762
申请日：1988-04-25
IPC分类号： B01J38/00 , C07B61/00 , C07C67/00 , C07C209/00 , C07C209/78 , C07C211/00 , C07C211/26 , C07C211/49 , C07C211/57 , C08G12/08 , C08G73/02 , C09B11/02
CPC分类号： C07C209/78
摘要： The present invention relates to an improved process for the preparation of multinuclear aromatic polyamines by the condensation of aniline with formaldehyde in the presence of water and acid catalysts and working up of the reaction mixture by extraction with a hydrophobic solvent. The acid catalyst obtained in the aqueous phase of extraction is reused.
摘要翻译： 本发明涉及通过在水和酸催化剂的存在下苯胺与甲醛缩合制备多核芳族多胺的改进方法，并通过用疏水性溶剂萃取来处理反应混合物。 在萃取水相中获得的酸催化剂被重复使用。
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