Preparation of caprolactam by Beckmann rearrangement of cyclohexanone oxime

Preparation of caprolactam by Beckmann rearrangement of cyclohexanone oxime

A process for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at from 85 DEG to 125 DEG C. in a plurality of rearrangement stages arranged in series entails returning a portion of the reaction mixture leaving the last rearrangement stage to at least one of the prece...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NEUBAUER, GERALD, RITZ, JOSEF, FUCHS, HUGO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:A process for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime with oleum at from 85 DEG to 125 DEG C. in a plurality of rearrangement stages arranged in series entails returning a portion of the reaction mixture leaving the last rearrangement stage to at least one of the preceding rearrangement stages.