CATALYST FOR POLYBUTADIENE POLYMERIZATION, POLYBUTADIENE, AND PRODUCTION METHOD THEREOF

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To provide a catalyst for polybutadiene polymerization capable of producing polybutadiene having high linearity, capable of obtaining a rubber composition excellent in crack propagation resistance and rolling resistance.SOLUTION : A catalyst for polybutadiene polymerization contains a metal compound containing an element of group 3-12 in the periodic table or a rare-earth element, an organic aluminum compound and a fluorine-containing organic compound.SELECTED DRAWING : None