公开(公告)号：EP2077989A1

公开(公告)日：2009-07-15

申请号：EP07820444.3

申请日：2007-09-21

Applicant: BASF SE

Inventor： SCHMIDTKE, Helmut ,  RUDLOFF, Martin

IPC: C07C213/02 ,  C07C217/08

CPC classification number: C07C213/02 ,  C07C217/08

Abstract: The invention relates to a method for producing electronic grade 2,2'-aminoethoxyethanol by reacting diethylene glycol with ammonia in a reactor in the presence of a catalyst, thereby obtaining a reaction mixture. A crude 2,2'-aminoethoxyethanol stream is separated from said mixture and is purified by distillation in a pure product column. The method according to the invention is characterized by drawing off from the pure product column a side stream that contains electronic grade 2,2'-aminoethoxyethanol. For this purpose, the diethylene glycol is guided across a filter having a separation degree of at least 99% for solid particles with a maximum particle size of ≤1.5 μm before it is supplied to the reactor.