Process for recovery of hexamethylendiamine from mixtures containing same

A process for recovering hexamethylenediamine (I) from a mixture (II) comprising (I) hexamethylenediamine, (III) hexamethyleneimine, (IV) a compound selected from the group consisting of 2-aminomethylcyclopentylamine and 1,2-diaminocyclohexane, (V) an imine, (VI) adiponitrile and 6-aminocapronitrile...

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Bibliographische Detailangaben
Hauptverfasser:	FISCHER, ROLF, LUYKEN, HERMANN, VOIT, GUIDO, REHFINGER, ALWIN, BABLER, PETER
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC CHEMISTRY TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A process for recovering hexamethylenediamine (I) from a mixture (II) comprising (I) hexamethylenediamine, (III) hexamethyleneimine, (IV) a compound selected from the group consisting of 2-aminomethylcyclopentylamine and 1,2-diaminocyclohexane, (V) an imine, (VI) adiponitrile and 6-aminocapronitrile comprises distilling. (a) a mixture (II) to obtain (a1) a low boiling fraction comprising essentially (III), (a2) a medium boiling fraction (VII) comprising (I), (IV) and (V), and (a3) a high boiling fraction (V) and (VI), (b) a mixture (VII) to obtain (b1) an overhead product comprising essentially (IV), and (b2) a mixture (VIII) comprising (I) and (V) as bottom product, and (c) a mixture (VIII) to obtain (c1) (I) as overhead product, and (c2) a bottom product comprising the essential portion of (V).