公开(公告)号：US3855080A

公开(公告)日：1974-12-17

申请号：US26945672

申请日：1972-07-06

Applicant: BASF AG

Inventor： BECKER L ,  KAHR K ,  RAPP G ,  WASCHKA O

IPC: C07D201/16 ,  B01D1/22 ,  C07D41/06

CPC classification number: C07D201/16

Abstract: Caprolactam is recovered from a mixture which contains caprolactam and oligomers of the same by distillation at temperatures above the melting point of the oligomers or mixture thereof contained in the residue at atmospheric or slightly increased pressure. The process is of importance for removing residues of caprolactam oligomer residues and thus for effluent pollution control.

Abstract translation: 通过在高于大气压或稍微增加的压力下残留物中的低聚物或其混合物的熔点的温度下蒸馏，从含有己内酰胺及其低聚物的混合物中回收己内酰胺。 该过程对于去除己内酰胺低聚物残留物的残留物以及用于污水污染控制是重要的。