POLYOLEFIN COMPOSITIONS, ARTICLES MADE THEREFROM AND METHODSFOR PREPARING THE SAME

摘要

The invention provides compositions for blow molding applications and other applications, where such compositions comprise a high density ethylene polym er and a high molecular weight ethylene polymer. In these compositions, the hig h density ethylene polymer has a density greater than the density of the high molecular weight ethylene polymer, and the high molecular weight ethylene polymer has a weight average molecular weight greater than the weight averag e molecular weight of the high density ethylene polymer, and in addition, the high density ethylene polymer has a density from 0.94 g/cm3 to 0.98 g/cm3 , and a molecular weight distribution, Mw/Mn, greater than 8, and the high molecular weight ethylene polymer has a weight average molecular weight greater than 200,000 g/mole, and a molecular weight ratio, Mz/Mw, less than 5.