Propylene polymer, propylene copolymer, and propylene elastomer prepared using novel bridged indenyl containing metallocenes

摘要

The novel transition metal compound of the invention is represented by the following formula (I): and R2 are each a hydrogen atom, a hydrocarbon group or the like; R3 is an alkyl group of 2 to 20 carbon atoms; R4 is an alkyl group of 2 to 20 carbon atoms; X1 and X2 are each a halogen atom or the like; and Y is a divalent hydrocarbon group, a divalent silicon-containing group or the like. The transition metal compound is useful for an olefin polymerization catalyst with which a propylene (co)polymer having specific structure is prepared.