Patent ID: 8436112
Filing Date: 2013-05-07
Classification: C08F,Y10T

Abstract:
1. A metallocene catalyst system (MCS) comprising: a support, wherein the support has an average pore diameter of from 240 Angstroms to 350 Angstroms; an activator comprising an aluminoxane, wherein the activator is dissolved in a solvent and added to the support at about the reflux temperature of the solvent; and a metallocene bound substantially throughout said support, wherein the metallocene is added to the support at approximately room temperature; wherein the metallocene loading is about 1% to about 2%, and wherein on exposure to a reaction environment comprising about 300 g to about 400 g propylene per Liter of reactor volume, about 23 ppm by weight of said MCS, about 37 ppm by weight H wherein said metallocene is selected from the group consisting of: rac-dimethylsilanediyl bis(2-methyl-4-phenylindenyl)zirconium dichloride; rac-dimethylsilanediyl bis(2-methyl indenyl)zirconium dichloride; rac-dimethylsilanediyl bis(2-methyl-4,5-benzoindenyl)zirconium dichloride; and rac-dimethylsilanediyl bis(2-methyl-4-(1-naphthyl)indenyl)zirconium dichloride.