Chevron Phillips Chemical Company LP

Steve J Secora

Qing R Yang

Errun Ding

Rex E Murray

William B Beaulieu

Gary L Glass

Alan L Solenberger

Ted H Cymbaluk

Albert P Masino

Kumudini Jayaratne

The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.

Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates

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.

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

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Bartlesville, OK, United States of America

Steve J Secora