Patent ID: 9416206
Filing Date: 2016-08-16
CPC Classification: C08F,C08L,C10M,C10N

Claim Text:
1. A composition comprising an ethylene-propylene copolymer, which copolymer was prepared in a single reactor using a single catalyst system, comprising 40 wt % to 65 wt % of units derived from ethylene, and at least 35 wt % of units derived from propylene, wherein the composition has: 40-65 wt % units derived from ethylene; a melting point (Tm) in ° C., as measured by DSC, that satisfies the relation: a Mw/Mn ratio of about 1.5 to about 3.5; and a content of Group 4 metals derived from a catalyst of 25 ppm or less.