公开(公告)号：US06858728B2

公开(公告)日：2005-02-22

申请号：US10464104

申请日：2003-06-17

Applicant: Gregory S. Kirby ,  John J. Ostermaier

Inventor： Gregory S. Kirby ,  John J. Ostermaier

IPC: C07D201/08 ,  C07D201/00 ,  C07D201/02

CPC classification number: C07D201/08

Abstract: Method for making caprolactam from 6-aminocapronitrile that contains greater than 500 ppm tetrahydroazepine and its derivatives (THA) in which the THA is not removed from the method until after the caprolactam is produced.

Abstract translation: 从6-氨基己腈制备己内酰胺的方法，其含有大于500ppm的四氮氮平及其衍生物（THA），其中THA不从该方法中除去，直到己内酰胺生产。