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EP0306874A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for working-up distillation residues obtained during the purification of caprolactam

Assignee: BASF SE
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Filing: 1988-09-03
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Granted: —
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Expires: 2008-09-03
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Abstract

Abstract Translated from German Verfahren zur Aufarbeitung von Destillationsrückständen, die bei der Reinigung von Caprolactam anfallen, dadurch gekennzeichnet, daß man die Destillationsrückstände in Gegenwart von Natrium- oder Kaliumhydroxid und in Gegenwart eines hochsiedenen Kohlenwasserstoffs auf eine Temperatur von 250 bis 500°C erhitzt und Caprolactam fortlaufend auf dem Reaktionsgemisch entfernt. Process for working up distillation residues which are obtained in the purification of caprolactam, characterized in that the distillation residues are heated to a temperature of 250 to 500 ° C. in the presence of sodium or potassium hydroxide and in the presence of a high-boiling hydrocarbon and caprolactam is continuously added to the reaction mixture away.

Inventors

  • 👤 Hugo Dr. Fuchs

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 17:11
CPC Classifications
C; C07; C07D; C07D201/00; C07D201/16

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