VERFAHREN ZUR GEWINNUNG VON MALEINSAEUREANHYDRID AUS DESTILLATIONSRUECKSTAENDEN

VERFAHREN ZUR GEWINNUNG VON MALEINSAEUREANHYDRID AUS DESTILLATIONSRUECKSTAENDEN

A process for the recovery of maleic anhydride from distillation residues containing the same is described whereby a residue containing phthalic anhydride is added to the residue of maleic anhydride prior to or after distillation of the maleic anhydride residue. By such a process maleic anhydride re...

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Bibliographische Detailangaben
Hauptverfasser: LENZ,GUENTHER,DR, HELLER,KARL-HEINZ,DR
Format: Patent
Sprache:ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for the recovery of maleic anhydride from distillation residues containing the same is described whereby a residue containing phthalic anhydride is added to the residue of maleic anhydride prior to or after distillation of the maleic anhydride residue. By such a process maleic anhydride recovery is improved and the distillation residue remaining from distillation of the maleic anhydride out of the maleic anhydride residue remains removable by simple mechanical means from the distillation vessel.