Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins

A catalyst system includes a metallocene compound having the formula R L L M R R , wherein R is a bridge between ligands L and L and M is a metal of Group IVB of the Periodic Table such as titanium, zirconium and hafnium and R and R can be hydrogen or aliphatic or aromatic groups. Bridge R can inclu...

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Bibliographische Detailangaben
Hauptverfasser:	WINTER ANDREAS, SCHOTTEK JOERG, SELL THORSTEN, PACZKOWSKI NICOLA STEFANIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A catalyst system includes a metallocene compound having the formula R L L M R R , wherein R is a bridge between ligands L and L and M is a metal of Group IVB of the Periodic Table such as titanium, zirconium and hafnium and R and R can be hydrogen or aliphatic or aromatic groups. Bridge R can include silicon, germanium or tin. The metallocene compound of the invention as synthesized has a racemic to meso isomer ratio of greater than 5 to 1, thereby precluding the need for subsequent separation of the meso isomer.