Polyolefin composition with molecular weight maximum occurring in that part of the composition that has the highest comonomer content

A polyolefin copolymer composition produced with a catalyst having a metallocene complex in a single reactor in a process for the polymerisation of an alpha-olefin monomer with one or more olefin comonomers, the composition having a molecular weight maximum which occurs in that 50% by weight of the...

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Hauptverfasser:	WINTER, J MARK, PARTINGTON, S ROY, PEIL, KEVIN P, SPENCER, LEE, PARIKH, DEEPAK R, FRYE, CHRISTOPHER J, HOWARD, PHILIP, KARJALA, TERESA, WILSON, DAVID R, MUNRO, IAN, CADY, LARRY D, WILLIAMS, PETER S, MADDOX, PETER J, VAN VOLKENBURGH, WILLIAM R
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	A polyolefin copolymer composition produced with a catalyst having a metallocene complex in a single reactor in a process for the polymerisation of an alpha-olefin monomer with one or more olefin comonomers, the composition having a molecular weight maximum which occurs in that 50% by weight of the composition which has the highest weight percent comonomer content, as expressed by having a comonomer partitioning factor Cpf which is equal to or greater than 1.10 and/or a molecular weight partitioning factor Mpf which is equal to or greater than 1.15. A preferred composition also have at least 0.01 long chain branches per 1000 carbon atoms along the polymer backbone. These compositions with reverse molecular engineering have superior properties and are easily processable due to the simultaneous presence of the association of high molecular weight with high comonomer content and of long chain branching.