Patent ID: 6841631

Claim:
A continuous gas phase polymerization process comprising combining in a single gas phase reactor olefin monomers with a catalyst composition comprising an activator, a first catalyst compound comprising a Group 15-containing metal compound and a second catalyst compound; wherein the Group 15-containing metal compound is represented by the formula: wherein M is a Group 4 metal, each X is independently a leaving group, n is the oxidation state of M, m is the formal charge of the ligand comprising Y, Z and L, L is a Group 15 element, Y is a Group 15 element, Z is a Group 15 element, R 1 and R 2 are independently a C 1 to C 20 hydrocarbon group, or a heteroatom containing group having up to twenty carbon atoms, the heteroatom selected from the group consisting of silicon, germanium, tin, lead, and phosphorus; wherein optionally, R 1 and R 2 are interconnected to each other, and/or R 4 and R 5 may be interconnected to each other, R 3 is absent, a hydrocarbon group, a hydrogen, a halogen, or a heteroatom containing group, R 4 and R 5 are independently an alkyl group, an aryl group, a substituted aryl group, a cyclic alkyl group, a substituted cyclic alkyl group, a cyclic arylalkyl group, a substituted cyclic arylalkyl group or a multiple ring system, and R 6 and R 7 are independently absent, hydrogen, an alkyl group, halogen, heteroatom or a hydrocarbyl group; wherein a polyolefin is produced; and wherein the melt index (I 2 ) of the polyolefin is changed by altering the relative amounts of the first catalyst compound and the second catalyst compound.