Patent ID: 7060765
Filing Date: 2006-06-13
Classification: C07F,C08F,Y10S

Abstract:
1. A process for polymerizing olefin(s) to produce a polyethylene, the process comprising contacting in a gas phase reactor ethylene and 1-hexene with a catalyst system, wherein the catalyst system comprises a low comonomer incorporating metallocene catalyst compound having at least one fused ring cyclopentadienyl based ligand and a second ligand, wherein the at least one fused ring cyclopentadienyl base ligand is directed to the front of the molecule by an angle α which is greater than 30 degrees, wherein the low comonomer incorporating metallocene catalyst compound comprises a bridging group having greater than 2 atoms, characterized in that the density of the polyethylene produced using the metallocene catalyst compound, as a function of 1-hexene to ethylene molar ratio, varies by a function greater than y=14.318x 2 −1.4146x+0.9523, wherein y is the density function and x is the 1-hexene:ethylene monomer mole ratio.