Patent ID: 7019157

Claim:
A metallocene compound represented by the following general formula (2): wherein M represents a titanium atom, a zirconium atom or a hafnium atom; Y is a bridge group representing methylene, ethylene, tetraalkylethylene with C 1 –C 6 alkyl groups, dialkylmethylene with C 1 –C 6 alkyl groups, or a divalent bridge group containing a silicon atom, a germanium atom, an oxygen atom, a nitrogen atom, a phosphorus atom or a boron atom; X represents a halogen atom, C 1 –C 6 alkyl, C 6 –C 16 aryl, alkylaryl having a C 1 –C 6 alkyl group and a C 6 –C 16 aryl group, or arylalkyl having a C 6 –C 16 aryl group and a C 1 –C 6 alkyl group; each R 1 independently represents C 1 –C 6 alkyl, a C 1 –C 6 halogen-containing alkyl group, a C 1 –C 6 silicon-containing alkyl group, C 6 –C 6 aryl, a C 6 –C 16 halogen-containing aryl group, a 2-furyl group, a substituted 2-furyl group, a 2-thienyl group, a substituted 2-thienyl group, a 2-furfuryl group or a substituted 2-furfuryl group; and each R 2 independently represents C 1 –C 6 alkyl, a C 1 –C 6 halogen-containing alkyl group, a C 1 –C 6 silicon-containing alkyl group, C 6 –C 16 aryl substituted with one or more C 1 –C 6 hydrocarbon groups, a C 6 –C 16 halogen-containing aryl group, a 2-furyl group, a substituted 2-furyl group, a 2-thienyl group, a substituted 2-thienyl group, a 2-furfuryl group or a substituted 2-furfuryl group, with the proviso that at least one of the two R 1 's is a substituted 2-furyl group or a substituted 2-thienyl group.