Patent ID: 7001862

Claim:
A catalyst composition for polymerization of olefins comprising: (a) a solid catalyst precursor consisting essentially of at least one vanadium compound represented by the general formulas V(OR 1 ) n X 4−n , V(R 2 ) n X 4−n , VX 3 and VOX 3 wherein R 1 and R 2 represent an alkyl group, aryl group or cycloalkyl group having 1 to 20 carbon atoms, X represents a halogen and n represents a number satisfying 0≦n≦4, at least one further transition metal compound represented by the general formulas Ti(OR 3 ) n X 4−n , TiOX 3 and Ti(R 4 ) n X 4−n , wherein R 3 and R 4 represent an alkyl group, aryl group or cycloalkyl group having 1 to 20 carbon atoms, X represents a halogen atom and n represents a number satisfying 0≦n≦4 and/or at least one alcohol, at least one Grignard compound represented by the general formula R 6 MgX wherein R 6 is a hydrocarbon group having 1 to 20 carbon atoms and X is a halogen atom, and/or a dialkyl magnesium compound represented by the general formula R 7 R 8 Mg wherein R 7 and R 8 are each a hydrocarbon group having 1 to 20 carbon atoms and a polymeric support consisting of polyvinylchloride, polyvinylalcohol, polyketone, hydrolyzed polyketone, ethylene-vinylalcohol copolymer or polycarbonate; and (b) a cocatalyst comprising at least one aluminum compound.