Patent ID: 8729201
Filing Date: 2014-05-20
Classification: B01J,C07D,C07F,C08F

Abstract:
1. A process for polymerizing an olefin monomer, the process comprising a step of contacting together a catalytic amount of a catalyst comprising a mixture or reaction product of components (a) and (b), wherein component (a) comprises a metal-ligand complex and component (b) comprises an activating co-catalyst; and an olefin monomer as component (c); the component (a) being one or more metal-ligand complexes of formula (I): wherein: M is a metal of Group 4 of the Periodic Table of the Elements, the metal being in a formal oxidation state of +3 or +4; n is an integer of from 1 to 5; each X independently is a monodentate ligand that is neutral, monoanionic, or dianionic; or two X are taken together to form a bidentate ligand that is neutral, monoanionic, or dianionic; X and n are chosen in such a way that the metal-ligand complex of formula (I) is, in aggregate, neutral; each of R R each of the aforementioned hydrocarbyl and heterohydrocarbyl independently is unsubstituted or substituted with one or more substituents R each R the component (b) being one or more activating co-catalysts, or a reaction product thereof, wherein the ratio of total number of moles of the one or more metal-ligand complexes of formula (I) to total number of moles of the one or more activating co-catalysts is from 1:10,000 to 100:1; wherein the contacting step is performed under olefin polymerizing conditions and prepares a polyolefin, and wherein the metal-ligand complex of formula (I) is a metal-ligand complex of formula (Ip), (Ia), (Ia-1), (Ia-1.1), or (Ia-2): wherein at least one of R wherein in formula (Ia) each of R wherein in formula (Ia-1) each of R or wherein in formula (Ia-1.1) each of R 72 to R 76 independently is a hydrogen atom, a (C 1 -C 40 )alkyl, or R S , wherein R S is as defined previously; or wherein in formula (Ia-1.2) each of R 72 to R 76 independently is a hydrogen atom, a (C 1 -C 40 )alkyl, or R S , wherein R S is as defined previously.