METHOD FOR REDUCING RESIDUAL MONOMERS IN LIQUID SYSTEMS BY ADDING AN OXIDATION-REDUCTION INITIATOR SYSTEM

METHOD FOR REDUCING RESIDUAL MONOMERS IN LIQUID SYSTEMS BY ADDING AN OXIDATION-REDUCTION INITIATOR SYSTEM

A process is described for reducing the residual monomer content in a liquid solution, mixture, melt, suspension or dispersion of a polymer by postpolymerization with addition of a redox initiator system at a reaction temperature appropriate to it and with an extremely short mixing time of the liqui...

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Bibliographische Detailangaben
Hauptverfasser: BAUER, GERHARD, MORRISON, BRADLEY, RONALD, LAWRENZ, SVEN, RUPANER, ROBERT, MEISTER, MARTIN, KIRCHNER, WERNER, NAHSTOLL, JUERGEN, BAECHER, REINHARD, HUEBINGER, WOLFGANG, SCHUMACHER, GERHARD, DOBBELAAR, JOHANNES, MUESELER, FRANZ-JOSEF
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:A process is described for reducing the residual monomer content in a liquid solution, mixture, melt, suspension or dispersion of a polymer by postpolymerization with addition of a redox initiator system at a reaction temperature appropriate to it and with an extremely short mixing time of the liquid system in the production reactor by metering-gradually, in portions or continuously-at least one of the redox initiator components required to initiate polymerization of the residual monomers over a period (metering time) which is from about 10 to 250 times the mixing time of the liquid system in said reactor.