CATALYST FOR CONJUGATED DIENE POLYMERIZATION, MANUFACTURING METHOD OF CONJUGATED DIENE POLYMER, CO

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PROBLEM TO BE SOLVED : To provide a conjugated diene polymer having higher percentage content of cis-1, 4 structure with higher activity than conventional ones by using a rare earth metal-based alkoxide compound. SOLUTION : The invention relates to a catalyst for conjugated diene polymerization containing a rare earth metal-based alkoxide compound (A) excluding a Sm-based alkoxide compound and a Yb-based alkoxide compound, an ionic compound consisting of non-coordinating anion and cation (B) and an organic metal compound of an element selected from II Group, XII group and VIII group in the periodic table (C). SELECTED DRAWING : None COPYRIGHT : (C)2016, JPO&INPIT