METHOD FOR MANUFACTURING DIARYL CARBONATES

METHOD FOR MANUFACTURING DIARYL CARBONATES

The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of at least one optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KRÄMER, Korbinian, LIPSKI, Florian, KÖHLER, Karl-Heinz, SOMHOM, Weerachanan, HALLENBERGER, Kaspar, VANDEN EYNDE, Johan, KAHNIS, Henning, DENECKER, Gabriel, LEIBERICH, Ricarda
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of at least one optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of distillation and recovered.