Verfahren zur Reinigung von Lactamen

Verfahren zur Reinigung von Lactamen

1318459 Purifying lactams INVENTA AG 29 Sept 1971 [1 Oct 1970] 45406/71 Heading C2C A process for purifying a (C 6 -C 12 ) lactam comprises treating the lactam in the crystalline state with a (C 5 -C 12 ) aliphatic or cycloaliphatic hydrocarbon. The process is preferably carried out at a temperature...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DR.. CLAU BERTHER, RUTHILD HENN, ER.NAT.. HANS-JOACHIM SCHULTZE
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:1318459 Purifying lactams INVENTA AG 29 Sept 1971 [1 Oct 1970] 45406/71 Heading C2C A process for purifying a (C 6 -C 12 ) lactam comprises treating the lactam in the crystalline state with a (C 5 -C 12 ) aliphatic or cycloaliphatic hydrocarbon. The process is preferably carried out at a temperature of from 10‹ to 45‹ C., for 5 to 60 minutes using a weight ratio of lactam to extracting agent of at most 1 : 1. The hydrocarbon is suitably a (C 5 or C 6 ) unsubstituted cycloalkane or a (C 1 -C 10 ) alkyl derivative thereof, a (C 5 -C 10 ) straight or branched chain aliphatic hydrocarbon, or petroleum ether. Examples describe the purification of caprolactam and laurolactam.