Patent ID: 9012578
Filing Date: 2015-04-21
Classification: C08F,C10M,C10N

Abstract:
1. A process for preparing an ethylene-propylene copolymer comprising: polymerizing propylene and ethylene in a solution process and in the presence of a catalyst system comprising a catalyst and an activator; a. wherein the catalyst comprises a metallocene compound; b. wherein the activator comprises a cationic component and an anionic component; c. wherein the cationic component of the activator corresponds to the formula: d. wherein the anionic component of the activator corresponds to the formula [B(R wherein the ethylene-propylene copolymer comprises from about 65 wt % to about 90 wt % ethylene-derived units, based on the weight of the ethylene-propylene copolymer; and wherein the ethylene-propylene copolymer has a melting temperature of from about 95° C. to about 200° C.