| abstract |
The invention provides a preparation method of a polybutadiene, which comprises the following steps: under the actions of a cocatalyst and a cobalt complex disclosed as Formula (I), carrying out polymerization reaction on butadiene in an organic solvent to obtain polybutadiene. In the polybutadiene preparation process, the cobalt complex disclosed as Formula (I) and the cocatalyst are used as the catalyst, the electrophilic chlorine atoms introduced into the ligand structure of the cobalt complex increase the electropositivity of the active center cobalt atom, thereby endowing the butadiene monomer with larger coordination space; and thus, the cobalt complex has higher catalytic activity, so the polybutadiene has higher yield. The experiment proves that the yield of polybutadiene is 72-97% in the butadiene catalytic polymerization process of the cobalt complex. |