公开(公告)号：US20110021741A1

公开(公告)日：2011-01-27

申请号：US12922632

申请日：2009-04-15

申请人： Lao-Jer Chen ,  Jorge Jimenez

发明人： Lao-Jer Chen ,  Jorge Jimenez

IPC分类号： C08G73/02

CPC分类号： C08G73/0266

摘要： A method for preparing aromatic polyamines comprising (1) preparing a non-aqueous aminal solution; (2) contacting the non-aqueous aminal solution and an acidic siliceous catalyst to form a benzylamine intermediate; (3) contacting the benzylamine intermediate and an ion exchange resin catalyst based on a styrene-divinylbenzene copolymer to form an aromatic polyamine reaction mixture containing a polyaminopolyphenyl methane product; and (4) recovering the polyaminopolyphenyl methane product from the aromatic polyamine reaction mixture. The method, which may be practiced continuously, offers high 4,4′-methylene dianiline yield, reduced impurities, extended catalyst life, and, therefore, improved economics, when compared with many conventional methods to prepare polyaminopolyphenyl methanes.

摘要翻译： 一种制备芳族多胺的方法，包括（1）制备非水性的丙烯酸溶液; （2）使非水性氨基溶液和酸性硅质催化剂接触以形成苄胺中间体; （3）使苄胺中间体和基于苯乙烯 - 二乙烯基苯共聚物的离子交换树脂催化剂接触以形成含有多氨基多苯基甲烷产物的芳族多胺反应混合物; 和（4）从芳族多胺反应混合物中回收聚氨基多苯基甲烷产物。 当与制备聚氨基多苯基甲烷的许多常规方法相比时，可以连续实施的方法提供高的4,4'-亚甲基二苯胺产率，减少的杂质，延长的催化剂寿命，并因此提高经济性。