Late-addition catalyst formulation, reactor system, and method for producing polycarbonate

Late-addition catalyst formulation, reactor system, and method for producing polycarbonate

The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt% water. The formulation also...

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Hauptverfasser: AVILES ISABEL MACIAN, KAZUTOYO UNO, FERNANDEZ FERNANDO OLMEDO, AGUDA JORGE A GARCIA, FERNANDEZ IGNACIO VIC
Format: Patent
Sprache:chi ; eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator AVILES ISABEL MACIAN
KAZUTOYO UNO
FERNANDEZ FERNANDO OLMEDO
AGUDA JORGE A GARCIA
FERNANDEZ IGNACIO VIC
description The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt% water. The formulation also preferably includes a liquid carrier system having phenol and a cosolvent. The melt transesterification catalyst can be present in the formulation in a range of 50 ppm to 60,000 ppm.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Late-addition catalyst formulation, reactor system, and method for producing polycarbonate
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