Cationic group-3 catalyst system

Details Cationic group-3 catalyst system Cationic group-3 catalyst system

C - Chemistry, Metallurgy

07

F

C07F 5/00 (2006.01) C08F 10/00 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2424370

A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by an anionic multidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle having at least five primary atoms, counting any .pi.-bound cyclopentadienyl group in the metallocycle as two primary atoms. Olefin polymerization is exemplified.

La présente invention concerne le groupe 3 cationique ou un complexe métallique lanthanide permettant de coordonner la polymérisation d'oléfines. Ce complexe métallique précurseur est stabilisé par un ligand auxiliaire multidenté anionique et par deux ligands monoanioniques. Ce ligand auxiliaire et ce métal de transition forment un métallocycle possédant au moins cinq atomes primaires, étant entendu qu'on compte chaque groupe cyclopentadiènyle à liaison .pi. de ce métallocycle comme deux atomes primaires. Cette invention présente aussi une polymérisation d'oléfine.

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