A METHOD OF RECOVERING PHENOL IN A MELT POLYCARBONATE POLYMERIZATION

In an embodiment, a method of manufacture of a melt polycarbonate comprises melt polymerizing a bisphenol and diphenyl carbonate to form phenol and the melt polycarbonate in a polymerization unit; removing an overhead stream comprising the phenol in a gas phase from the polymerization unit; combinin...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GUNALE, Tukaram, ANAPAT, Samir, MATEOS SALVADOR, Fernan, IMAM, Rayees Ahamed
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	In an embodiment, a method of manufacture of a melt polycarbonate comprises melt polymerizing a bisphenol and diphenyl carbonate to form phenol and the melt polycarbonate in a polymerization unit; removing an overhead stream comprising the phenol in a gas phase from the polymerization unit; combining the overhead stream with a gas stream comprising a solvent in a gas phase to form a combined gas stream; wherein the combined gas stream has a freezing point at less than 3 mbar absolute that is less than the triple point of phenol; and condensing the combined gas stream in a condenser to form a condensed stream comprising the phenol and the solvent in a liquid phase.