Patent ID: 6573350
Filing Date: 2003-06-03
Classification: C08F,Y10S

Abstract:
A branched, semi-crystalline ethylene-propylene polymer composition produced by the process of:a) contacting propylene monomers and ethylene monomers in a single reactor with an inert hydrocarbon solvent or diluent and a catalyst composition comprising one single site catalyst compound in rac form capable of producing an ethylene-propylene polymer at a temperature from about 50Â° C. to about 180Â° C., wherein the ratio in the reactor of said propylene and ethylene monomers to said inert hydrocarbon solvent or diluent is less than 2.0, and further, wherein said propylene and ethylene monomers and said inert hydrocarbon solvent or diluent comprise at least 50 percent of the total contents of said reactor; and b) recovering a branched, semi-crystalline ethylene-propylene polymer composition, wherein the weight average branching index gâ€² for the higher molecular weight region of said ethylene propylene composition is less than 0.95.