Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor

Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor

The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these po...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BEAULIEU WILLIAM B, DING ERRUN, MURRAY REX E, GLASS GARY L, YANG QING, SOLENBERGER ALAN L, SECORA STEVE J
Format: Patent
Sprache:eng
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:The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.