Dynamic model of the homopolymerization of propylene with the Me2Si(2-Me-Ind)2ZrCl catalyst:: The effect of reaction variables

The effect of four variables-temperature, propylene pressure, Al/Zr ratio, and catalyst concentration-on catalyst productivity and molecular weight of the polymer synthesized with Me2Si(2-Me-Ind) 2ZrCl2 was studied. A mathematical model was developed based on the method of the moments that fit the experimental data. A special effect was seen with respect to the co-catalyst (MAO) on productivity, and therefore it was necessary to add deactivation-reactivation mechanisms associated with MAO to the model. With respect of the molecular weight of the polymer, a bimolecular transfer reaction associated with the active center was added to fit the experimentally observed data.