Polymerization catalysts for producing polymers with low levels of long chain branching

This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging h5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene polymers with low levels...

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Bibliographische Detailangaben
1. Verfasser:	JENSEN MICHAEL,MARTIN JOEL L.,MCDANIEL MAX P.,ROLFING DAVID C.,YANG QING,THORN MATTHEW G.,SUKHADIA ASHISH,YU YOULU,LANIER JERRY T
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging h5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.