Process for the preparation of a terpolymer of ethylene, an...

Details Process for the preparation of a terpolymer of ethylene, an... Process for the preparation of a terpolymer of ethylene, an...

C - Chemistry, Metallurgy

08

F

C08F 210/16 (2006.01) C08F 4/62 (2006.01) C08F 210/18 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2253514

The invention relates to process for the preparation of a terpolymer of ethylene, an .alpha.-olefin and a diene, and which comprises the use of a transition metal complex and a co-catalyst. The invention is characterized in that the polymerization is conducted using a transition metal complex consisting of a reduced transition metal complex, chosen from groups 4-6 of the Periodic Table of the Elements, with a multidentate monoanionic ligand and with two monoanionic ligands, at a temperature of between -10 and 220 ~C. In particular the reduced transition metal in the complex is titanium (Ti).

L'invention concerne un procédé de préparation d'un terpolymère d'éthylène, une .alpha.-oléfine et un diène, ce procédé consistant à utiliser un complexe d'un métal de transition et un co-catalyseur. L'invention se caractérise en ce que la polymérisation est effectuée à l'aide d'un complexe d'un métal de transition consistant en un complexe d'un métal de transition à balance réduite choisi dans les groupes 4 à 6 de la table périodique des éléments, avec un ligand monoanionique multidenté et avec deux ligands monoanioniques, à une température comprise entre -10 et 220 ·C. En particulier, le métal de transition réduit dans le complexe est le titane (Ti).

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