PREPARATION OF ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE

摘要

An ultra-high-molecular-weight polyethylene (UHMWPE) is disclosed. The UHMWP E has a weight average molec-ular weight (Mw) greater than about 3,000,000 and molecular weight distribution less than about 5. A process for making the UHMWPE is also disclosed. The process is performed with a heteroatomic ligan d- containing single-site catalyst in the presence of a non-alumoxane activator, but in the absence of an .alpha.-olefin, an aromatic solvent, and hydrogen.