A METHOD FOR SEPARATING N, N-DIALKYLBISAMINOALKYLETHER FROM MIXTURES COMPRISING, N, N-DIALKYLBISAMINOALKYLETHER AND AT LEAST ONE OF N, N, N' - TRIALKYLBISAMINOALKYLETHER AND N, N, N', N' - TETRAALKYLBISAMINOALKYLETHER

摘要

According to the present invention, a method for separating a primary amine being an N,N- dialkyl-bisaminoalkylether, from mixtures comprising said primary amine and at least one of a secondary amine being an N,N,N'-trialkyl-bisaminoalkylether and a tertiary amine being an N,N,N'N'-tetraalkylbisaminoalkylether, comprising the steps: (a) joining said mixture and at least one of a ketone and an aldehyde for reacting said primary amine with said at least one of a ketone and an alde-hyde, thereby providing a primary amine based imine by a Schiff base reaction; (ß) separating the primary amine based imine from said at least one of the secondary or tertiary amine; and (y) recovering the primary amine from its primary amine based imine by hydrolysis of the primary amine based imine.