Verfahren zur Reinigung von Lactamen

Lactams are purified by forming a melt of crude lactam and adding to it sufficiently finely divided solid crude lactam to make a mixture in which the melt forms 50-90% by weight, maintaining the mixture in an adiabatic state and, after melting equilibrium is reached, separating crystals of purified...

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Hauptverfasser:	SAILER,RICHARD, BERTHER,CLAU
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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creator	SAILER,RICHARD BERTHER,CLAU
description	Lactams are purified by forming a melt of crude lactam and adding to it sufficiently finely divided solid crude lactam to make a mixture in which the melt forms 50-90% by weight, maintaining the mixture in an adiabatic state and, after melting equilibrium is reached, separating crystals of purified lactam from the mixture. The process is particularly suitable for the purification of lactams having 7-13 ring members. The crude lactam may be subjected to a preliminary treatment with potassium permanganate prior to purification.
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The process is particularly suitable for the purification of lactams having 7-13 ring members. 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title	Verfahren zur Reinigung von Lactamen
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