Hafnocene catalyst compounds and process for use thereof
Abstract:
This invention relates to hafnium metallocene compounds having a group substituted (preferably at the 3 position) on at least one cyclopentadienyl ring represented by the formula —R20—SiR′3 or —R20—CR′3 where R20 is a C1 to C4 hydrocarbyl (preferably methyl) and R′ is a C1 to C20 substituted or unsubstituted hydrocarbyl.
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