Patent ID: 6897275
Filing Date: 2005-05-24
Classification: B01J,C07F,C08F

Abstract:
1. A process for the polymerization of olefins, comprising the step of contacting, at a temperature of about −100° C. to about +200° C., at least one polymerizable olefin with an active polymerization catalyst comprising a Group 3 through 11 (IUPAC) transition metal or a lanthanide metal complex of a ligand of the formula (I), (II) or (XII) wherein: R Y is CR X is O, CR A is O, S, Se, N, P or As; Z is O, Se, N, P or As; each Q is independently hydrocarbyl or substituted hydrocarbyl; R R R R each T is independently ═O or ═NR R R R R each R m is 0 or 1; s is 0 or 1; n is 0 or 1; and q is 0 or 1; and provided that: any two of R any two of R when said ligand is (I), Y is C(O), Z is O, and R