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公开(公告)号：DE2801256A1
公开(公告)日：1978-07-13
申请号：DE2801256
申请日：1978-01-12
Applicant: STAMICARBON
Inventor： GEURTS GERARDUS ALPHONSUS , GOETTSCH REIJER
IPC: C07D201/16
Abstract: A method of recovering epsilon -caprolactam from the residue remaining from the distillation of impure epsilon -caprolactam wherein the residue is treated with sulphuric acid or oleum at a temperature between about 80 DEG C. and about 140 DEG C. and the resultant mixture neutralized. The lactam is then extracted with an organic solvent with the lactam then recovered from the resultant solution.
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