Patent ID: 6610627
Filing Date: 2003-08-26
Classification: C07F,C08F,Y10S

Abstract:
A catalyst composition comprising:a) a catalyst precursor compound having the formula: AqMLn wherein each A has the formula: â€ƒM is a Group 4 metal; each L is a monovalent, bivalent, or trivalent anion; Q is a bridging group containing one or more Group 13-16 atoms; X and Y are each heteroatoms selected from the group consisting of N, O, S and P, said Y being contained in a heterocyclic ring additionally comprising from 2 to 7 carbon atoms, and substituted with from 0 to 5 R2 groups, said Q being bonded to said heterocyclic ring at an atom other than Y; Cyclo is a cyclic moiety; each R1 is independently a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements, and two or more adjacent R1 groups may be joined to form a cyclic moiety; each R2 is independently a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements, and two or more adjacent R2 groups may be joined to form a cyclic moiety; each m is independently an integer from 0 to 5; n is an integer from 1 to 4; q is 1 or 2; and when q is 2, the A groups are optionally connected by a bridging group Z containing one or more Group IIIA, group IVA, Group VA, or Group VIA elements; and b) an activating cocatalyst.