HIGH-PURITY DIARYL CARBONATE, AND METHOD FOR PREPARING THE SAME

PROBLEM TO BE SOLVED: To provide a high-purity and polymerization-inhibitor free diaryl carbonate of extremely high polymerization reactivity suitable as a raw material for preparing an aromatic polycarbonate by a melt transesterification method and capable of reducing the amount of polymerization c...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HYODO NARUTOSHI, TSUCHISADA HIDETAKA, SUGURO YOSHIO, KAWAI MICHIO
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To provide a high-purity and polymerization-inhibitor free diaryl carbonate of extremely high polymerization reactivity suitable as a raw material for preparing an aromatic polycarbonate by a melt transesterification method and capable of reducing the amount of polymerization catalyst to be added, and a method for preparing the same. SOLUTION: Disclosed are, (1) a diaryl carbonate with the content of aromatic monohydroxy compounds reduced to 100 ppm or lower by distillation, and (2) a method for preparing a diaryl carbonate characterized by reducing the content of aromatic monohydroxy compounds in a purified diaryl carbonate to 100 ppm or lower upon obtaining the purified diaryl carbonate from the bottom of a distillation column by distilling a crude diaryl carbonate comprising aromatic monohydroxy compounds. COPYRIGHT: (C)2009,JPO&INPIT