PROCESS FOR PURIFYING ADIPONITRILE

PROCESS FOR PURIFYING ADIPONITRILE

A process for purifying crude adiponitrile which comprises contacting crude liquid adiponitrile with oxygen or a gas containing molecular oxygen at a temperature of from 120 DEG to 300 DEG C. to thereby convert impurities in the crude adiponitrile into colored high-boiling compounds, and separating...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NISHIMURA K,JA, TOSHIMITSU T,JA, INABA Y,JA, YAMADA K,JA, FURUSAKI S,JA
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for purifying crude adiponitrile which comprises contacting crude liquid adiponitrile with oxygen or a gas containing molecular oxygen at a temperature of from 120 DEG to 300 DEG C. to thereby convert impurities in the crude adiponitrile into colored high-boiling compounds, and separating adiponitrile from the colored, high-boiling compounds by distillation under reduced pressure.