Abstract

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 Me2 Si(2-Me-Ind)2 ZrCl2 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. Copyright © Taylor & Francis Group, LLC.