| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing 1, 2-polybutadiene having a high crystallinity using a particular catalyst system. SOLUTION: The method comprises polymerizing 1, 3-butadiene preferably in a non-halogen type hydrocarbon solvent to obtain the high crystallinity 1, 2-polybutadiene by using the catalyst system containing (A) a cobalt salt, (B) a phosphine compound having an aliphatic group with a branch of 3 or more carbon atoms, or one alicyclic group having 5 or more carbon atoms and two aromatic groups, and (C) an organic aluminum compound. COPYRIGHT: (C)2004,JPO
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