Patent Number: 6,252,115

Title: Method for separating an imine from a mixture containing an amine and an imine

Abstract: A process for distillative separation of part or all of an imine (III) from a mixture (II) comprising an amine (I) and said imine (III) comprises adding to the distillation mixture a compound (IV) which is inert toward said amine (I) under distillation conditions and whose boiling point is above the boiling point of said amine (I) under said distillation conditions to obtain, after the distillation, a mixture (VI) comprising essentially said compound (IV).

Inventors: Luyken; Hermann (Ludwigshafen, DE), Bassler; Peter (Viernheim, DE), Rehfinger; Alwin (Mutterstadt, DE)

Assignee: BASF Aktiengesellschaft

International Classification: C07C 209/00 (20060101); C07C 209/86 (20060101); C07D 223/04 (20060101); C07D 223/00 (20060101); C07C 251/12 (20060101); C07C 251/00 (20060101); C07C 211/12 (20060101); C07C 255/24 (20060101); C07C 255/00 (20060101); C07C 211/00 (20060101); C07C 209/00 ()

Expiration Date: 06/26/2018