Abstract：The kinetics of α-olefin polymerization catalyzed by rac-Et(1-Ind)2ZrCl2/[Me2NHPh]+[B(C6F5)4]－/Al(iBu)3 were studied. According to the mechanism of polymerization reaction and experimental procedure, a single active center model was proposed and the model parameters were optimized. The results showed that the experimental data agreed well with the calculated values of the model. The parameters of the kinetic model reflected well the changes in the polymerization of coal-based mixed α-olefins catalyzed by metallocene system. The model can predict monomer concentration, number average molecular weight and weight average molecular weight under different reaction conditions and provide fundamental data for the process design of this polymerization.
