Patent Number: 6,169,199

Title: Method for separating 6-aminocaproic acid nitrile from mixtures containing 6-aminocaproic acid nitrile and an imine

Abstract: A process for distillative removal of 6-aminocapronitrile from mixtures (I) comprising 6-aminocapronitrile and an imine (II) comprises performing the distillation in a distillation column using an average mean residence time for the distillation mixture of at least 5 minutes on at least one level of the distillation column.

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

Assignee: BASF Aktiengesellschaft

International Classification: C07C 253/00 (20060101); C07C 253/34 (20060101); C07C 255/00 ()

Expiration Date: 01/02/2018