PROCESS FOR DISTILLING ALKALINE CAPROLACTAM PRODUCT AT REDUCED PRESSURE

PROCESS FOR DISTILLING ALKALINE CAPROLACTAM PRODUCT AT REDUCED PRESSURE

A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolact...

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Bibliographische Detailangaben
Hauptverfasser: JOOSTEN, RITA, DIMPHINA, BINDELS, JOSEPH, JOHANNES, GERARDUS, GROOT ZEVERT, LOUISE, ANNEMARIE, LEMMENS, JOANNES, ALBERTUS, WILHELMUS, MOSTERT, EELCO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; (b) reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and (c) distilling the caproate-enriched caprolactam product at reduced pressure.