Process for preparing purified caprolactam from the Beckmann rearrangement of cyclohexane oxime (US Patent 8841445)

Patent number: 8841445 Kind code: B2 Granted: 2014-09-23 Filed: 2013-12-18 Inventors: Rolf-Hartmuth Fischer (Heidelberg, DE) Assignees: BASF SE (DE)

Abstract

A process is described for preparing purified caprolactam, comprising the steps a) extraction of crude caprolactam, obtained from the Beckmann rearrangement of cyclohexanone oxime, with an organic extractant, b) removal of the organic phase from step a), c) distillative separation of the organic extractant from the