Patent ID: 9029487
Filing Date: 2015-05-12
Classification: C07D,C07F,C08F

Abstract:
1. A process for copolymerizing polymerizable olefins, the process comprising contacting together ethylene, a (C 3 -C 40 ) olefin comonomer, a first aprotic solvent, and a catalytic amount of a catalyst, wherein the catalyst is prepared before the contacting step as a solution in a second aprotic solvent and wherein the catalyst comprises a mixture or reaction product of a metal-ligand complex and at least one activating co-catalyst; wherein the metal-ligand complex is at least one metal-ligand complex (1) or (2): (2′,2″-(propane-1,3-diylbis(oxy))bis(3-(3,6-di-tert-butyl-9H-carbazol-9-yl)-5′-fluoro-5-(2,4,4-trimethylpentan-2-yl)biphenyl-2-ol)dimethyl-hafnium, (1); or (2′,2″-(propane-1,3-diylbis(oxy))bis(3-(3,6-di-tert-butyl-9H-carbazol-9-yl)-5′-chloro-5-(2,4,4-trimethylpentan-2-yl)biphenyl-2-ol)dimethyl-hafnium, (2); wherein the ratio of total number of moles of the at least one metal-ligand complex to total number of moles of the at least one activating co-catalyst is from 1:10,000 to 100:1; wherein the contacting is performed under olefin polymerizing conditions that include a reaction temperature of from 30 degrees Celsius to 300 degrees Celsius and prepares a polyolefin copolymer comprising repeat units comprising residuals of ethylene and the (C wherein the process forms reactive chains (in situ) and is characterized by a reaction rate constant k wherein the first and second aprotic solvents comprise (C