申请人:Ernst Martin
公开号:US20110060166A1
公开(公告)日:2011-03-10
The present invention relates to a process for preparing N,N-substituted 1,3-propanediamine by
a) reacting secondary amine with acrolein at a temperature of from (−50) to 100° C. and a pressure of from 0.01 to 300 bar, and
b) reacting the reaction mixture obtained in stage a) with hydrogen and ammonia in the presence of a hydrogenation catalyst at a temperature of from 40 to 400° C. and a pressure of from 1 to 400 bar,
wherein the molar ratio of secondary amine to acrolein in stage a) is 2:1 or more and the hydrogenation catalyst used in stage b) comprises cobalt. In a preferred embodiment, acrolein which has been obtained from glycerol based on renewable raw materials is used. The invention further relates to the use of N,N-dimethyl-1,3-propanediamine (DMAPA) based on renewable raw materials as a feedstock for lubricant soaps and other detergents, coagulants, polymers and comb polymers. In a further preferred embodiment, stage b) is performed in the presence of water.
本发明涉及一种制备N,N-取代1,3-丙二胺的方法,包括:
a) 在温度为(−50)至100°C和压力为0.01至300巴的条件下,将二级胺与丙烯醛反应,
b) 在存在氢化催化剂的条件下,将阶段a)得到的反应混合物与氢气和氨在温度为40至400°C和压力为1至400巴的条件下反应,
其中阶段a)中二级胺与丙烯醛的摩尔比为2:1或更高,并且阶段b)中使用的氢化催化剂包括钴。在一个优选实施例中,使用从可再生原料甘油制得的丙烯醛。本发明还涉及将基于可再生原料的N,N-二甲基-1,3-丙二胺(DMAPA)用作润滑皂和其他洗涤剂、凝聚剂、聚合物和共聚物的原料的用途。在另一个优选实施例中,阶段b)在水的存在下进行。