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AssigneesKyoto University, Zeon Corporation
InventorsFumiaki Bando, Shingo Okuno, Shigetaka Hayano, Mitsuo Sawamoto, Makoto Ouchi
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Conjugated diene polymer comprising at least a conjugated diene monomer unit, the conjugated diene polymer has a number-average molecular weight (Mn) in terms of polystyrene of 1,000 to 1,000,000, a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of lower than 2.0 and the polymer bears a halogen atom at a terminal of the polymer chain. Method for producing the conjugated diene polymer comprises subjecting a monomer containing at least a conjugated diene to living radical polymerization using a polymerization initiator comprising a halogenocyclopentadienyl triorganophosphine η2-olefin ruthenium complex represented by formula (6) (and an organic halide.
A conjugated diene polymer comprising at least a conjugated diene monomer unit, wherein the conjugated diene polymer has a number-average molecular weight (Mn) in terms of polystyrene of 1,000 to 1,000,000, a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of lower than 2.0 and the polymer bears a halogen atom at a terminal of the polymer chain.
A ruthenium complex represented by formula (6),
Dependencies are inferred from the claim text.