| abstract |
A catalyst comprising a cocatalyst and a catalyst component obtained by contacting a silicon-containing metallocene compound with an inorganic support to chemically bond the metallocene compound to the inorganic support, wherein the silicon-containing metallocene compound has a formula (I): wherein: M is a metal selected from [the group consisting of] group 4, 5, or 6 of the periodic table; each X is independently selected from the group consisting of hydrogen, halogen, C1-C10 alkyl, C1-C10 alkoxy, C6-C10 aryl, C6-C10 aryloxy, C2-C10 alkenyl, C7-C40 arylalkyl, C7-C40 alkylaryl, and C8-C40 arylalkenyl; A1 and A2 are independently selected from the group consisting of cyclopentadienyl, substituted cyclopentadienyl, indenyl, fluorenyl, substituted indenyl, and substituted fluorenyl, wherein the substituents are independently C1-C10 linear or branched alkyl, C5-C7 cycloalkyl, optionally substituted by an alkyl group, C6-C10 aryl, C6-C10 aryloxy, C2-C10 alkenyl, C7-C40 arylalkyl, C7-C40 alkylaryl, or C8-C40 arylalkenyl. |