METHOD FOR MANUFACTURING POLYCARBONATE

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polycarbonate having excellent characteristics, such as a hue and a mechanical physical property with stable quality and a high yield.SOLUTION: The method for manufacturing a polycarbonate comprises: continuously supplying a dihydroxy com...

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Bibliographische Detailangaben
Hauptverfasser:	NAGAO TAKEHITO, NAMIKI SHINGO, ODA YASUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for manufacturing a polycarbonate having excellent characteristics, such as a hue and a mechanical physical property with stable quality and a high yield.SOLUTION: The method for manufacturing a polycarbonate comprises: continuously supplying a dihydroxy compound including a specified dihydroxy compound, a diester carbonate and a polymerization catalyst to reactors; and performing poly-condensation. The plurality of reactors are connected at least in series, and the reaction condition of the last polymerization reactor satisfies a specified condition.