Patent ID: 8003739

Claim:
A polymerization process comprising: providing a multi-component catalyst system consisting essentially of: a first catalyst component generally represented by the formula XCp A Cp B MA n , wherein X is a structural bridge, Cp A and Cp B each denote a cyclopentadienyl group or derivatives thereof, each being the same or different and which may be either substituted or unsubstituted, M is a transition metal and A is an alkyl, hydrocarbyl or halogen group and n is an integer between 0 and 4; a second catalyst component generally represented by the formula XCp A Cp B MA n , wherein X is a structural bridge, Cp A and Cp B each denote a cyclopentadienyl group or derivatives thereof, each being the same or different and which may be either substituted or unsubstituted, M is a transition metal and A is an alkyl, hydrocarbyl or halogen group and n is an integer between 0 and 4 and wherein the second catalyst component exhibits a higher ethylene response than the first catalyst component and is capable of forming a higher level of xylene solubles than the first catalyst component; a support, wherein the support consists essentially of silica, alumina, magnesia, titania, zirconia or combinations thereof; and an activator; introducing the multi-component catalyst system to a reaction zone; introducing propylene monomer to the reaction zone; introducing ethylene monomer to the reaction zone; contacting the multi-component catalyst system with the propylene monomer and the ethylene monomer to form a heterophasic copolymer; and withdrawing the heterophasic copolymer from the reaction zone.