Process for the preparation of an ethylene and...

Details Process for the preparation of an ethylene and... Process for the preparation of an ethylene and...

C - Chemistry, Metallurgy

08

F

C08F 210/16 (2006.01) C08F 4/62 (2006.01) C08F 10/00 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01)

Patent

CA 2253542

The present process preparing an ethylene/.alpha.-olefin copolymer is conducted in the presence of a novel transition metal complex and co-catalyst. The process is further characterizable in that the transition metal complex is a reduced transition metal complex, selectable from groups 4-6 of the Periodic System of the Elements, with a multidentate monoanionic ligand and with two monoanionic ligands, at a temperature of between 100 and 220 ~C. In particular the reduced transition metal in the complex is titanium (Ti (III)).

L'invention concerne un procédé de préparation d'un copolymère d'éthylène .alpha.-oléfine, ce procédé se déroulant en présence d'un nouveau complexe d'un métal de transition et d'un co-catalyseur. Le procédé se caractérise également en ce que le complexe d'un métal de transition est un complexe d'un métal de transition réduit pouvant être choisi parmi 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 100 et 220 ·C. En particulier, le métal de transition réduit dans le complexe est le titane (Ti (III)).

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