Patent ID: 7091272
Filing Date: 2006-08-15
Classification: C08F

Abstract:
1. A composition comprising a clay and an ultra-high molecular weight polyethylene (UHMWPE); said composition is made by a process comprising polymerizing ethylene at a temperature within the range of about 40° C. to about 110° C. in the presence of a supported Group 4 transition metal complex having at least one pyridine moiety-containing ligand, a clay, and a non-alumoxane activator, in the absence of aromatic solvent, α-olefin comonomer, or hydrogen, said UHMWPE having a weight average molecular weight (Mw) greater than about 3,000,000, molecular weight distribution (Mw/Mn) less than about 5.0, and a bulk density greater than 0.26 g/cc.