Patent ID: 6777510
Filing Date: 2004-08-17
Classification: C08F

Abstract:
A catalyst composition for use in an olefin polymerization process, the catalyst composition comprising:a late transition metal selected from the group consisting of IUPAC convention Group 7 (Mn column), Group 8 (Fe column), Group 9 (Co column), Group 10 (Ni column) and Group 11 (Cu column) transition metals; and a ligand complexed with the late transition metal; the ligand being characterized by the general formula: whereineach E is N; each Y is a linking group independently selected from the group consisting of â€”Oâ€”, â€”NRâ€”, â€”CR2â€”, â€”Sâ€”, â€”PRâ€”, â€”SiR2â€”, and â€”G(CR2)mâ€”, where each R is a substituent independently selected from the group consisting of H, halide, alkyl, substituted alkyl, heteroalkyl, aryl, substituted aryl, and heteroaryl, and where one or more R substituents can be incorporated in a ring structure, G is selected from the group consisting of O, N, and CR2, and m is an integer greater than or equal to 1; each A is a Lewis acid; each X is an electron-withdrawing group independently selected from the group consisting of Cl, F, Br, I, CF3, C6F5, H, alkyl, C6H5, C6R5, and CR3, where each R is a substituent independently selected from the group consisting of H, halide, alkyl, substituted alkyl, heteroalkyl, aryl, substituted aryl, and heteroaryl, and where one or more R substituents can be incorporated in a ring structure; each Z is a substituent independently selected from the group consisting of H, halide, alkyl, substituted alkyl, heteroalkyl, aryl, substituted aryl, and heteroaryl, where one or more of X, Y and/or Z can be incorporated in a ring structure; wherein the late transition metal is also complexed with one or more additional ligands selected from the group consisting of ligands that are capable of adding to an olefin in a polymerization process and ligands that are capable of being displaced by the olefin.