METHOD OF MANUFACTURING epsi-CAPROLACTAM

METHOD OF MANUFACTURING epsi-CAPROLACTAM

PROBLEM TO BE SOLVED: To provide a method of manufacturing a high quality lactam from a crude lactam by continuously, effectively and economically removing impurities in an industrial scale. SOLUTION: This method of manufacturing -caprolactam comprises concurrently pouring (A) melted crude -caprolac...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SHIMAZU YASUKI, FUKAO MASAMI, KAIDA HIROYUKI
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method of manufacturing a high quality lactam from a crude lactam by continuously, effectively and economically removing impurities in an industrial scale. SOLUTION: This method of manufacturing -caprolactam comprises concurrently pouring (A) melted crude -caprolactam and (B) an aliphatic hydrocarbon solvent or (B') a mixed solvent comprising the aliphatic hydrocarbon solvent and a small amount of an organic solvent having a higher polarity than that of the aliphatic hydrocarbon at a temperature lower than the component (A) into a vessel and mixing to crystalline the -caprolactam and then carrying out a solid-liquid separation.