METALLOCENE CATALYSTS CONTAINING AN INDENYL MOIETY SUBSTITUTED AT THE 4-, 5-, 6- OR 7-POSITION BY A SILOXY OR GERMYLOXY GROUP

摘要

A metallocene catalyst in which the metal is coordinated by a eta5 cyclopentadienyl ligand which forms part of an indenyl or indenyloid moiety, characterized in that said moiety is directly or indirectly substituted at the 4-, 5-, 6- or 7-position by a pendant siloxy or germyloxy group.