Patent ID: 6569965
Filing Date: 2003-05-27
Classification: C08F,Y10S

Abstract:
A process for producing a branched ethylene-propylene composition comprising:a) contacting propylene monomers and ethylene monomers in a reactor with an inert hydrocarbon solvent or diluent and a catalyst composition comprising one or more single site catalyst compounds in rac forms 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 no more than 90 percent of the total contents of said reactor; and b) recovering a branched ethylene-propylene 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.