VERFAHREN ZUR HERSTELLUNG VON REINER FUMARSAEURE AUS MALEINSAEURE ENTHALTENDEN NEBENPRODUKTEN

A process for the preparation of pure fumaric acid from a solution of maleic acid comprises purifying the solution by contacting with activated charcoal and isomerizing the maleic acid in the presence of this urea and Hcl and either NaHSO3 or Na2SO3.

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Bibliographische Detailangaben
Hauptverfasser:	KORE,IREN,.. HORVATH,GEB, TUBA,GYULA, KOVACS,TIBOR, RETI,TAMAS, HALAS,GYOERGY, KOLONICS,ZOLTAN, BASSA,ROBERT, MESZAROS,PAL, BOGNAR,JOZSEF, LEGRADI,LASZLO
Format:	Patent
Sprache:	ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A process for the preparation of pure fumaric acid from a solution of maleic acid comprises purifying the solution by contacting with activated charcoal and isomerizing the maleic acid in the presence of this urea and Hcl and either NaHSO3 or Na2SO3.