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公开(公告)号：DE2135085A1
公开(公告)日：1973-02-01
申请号：DE2135085
申请日：1971-07-14
Applicant: BASF AG
Inventor： BECKER LOTHAR DIPL ING , KAHR KURT DR , RAPP GUENTHER DR , WASCHKA OTTO DR
IPC: C07D201/16 , C07D41/06
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.
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