Polymerization of an .alpha.-olefin

Details Polymerization of an .alpha.-olefin Polymerization of an .alpha.-olefin

C - Chemistry, Metallurgy

08

F

402/423, 402/636

C08F 4/62 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1138405

ABSTRACT OF THE DISCLOSURE A process for polymerizing an a-olefin comprising contacting the olefin in liquid phase at a temperature of about 120 to about 320°C with a catalyst comprising a component (A) and an organometal component (B), the component (A) being produced by reacting a hydrocarbon-soluble organomagnesium component (i) of the formula Image wherein o, p, q, r and s each independently is 0 or a number greater than 0, .beta. is 1 or a number greater than 1, p + q + r + s = m.alpha. + 2.beta., O S (r + m)/(.alpha. + .beta.) < 2, m is the valence of M, M is a metal of the 1st to 3rd groups of the Periodic Table. R1 and R2 each independently is a hydrocarbon group having 1 to 20 carbon atoms, X1 and X2 each independently is hydrogen or an organic electronegative group containing O, M or S, with (ii) a halide of boron, silicon, germanium, tin, phosphorus, antimony, bismuth or zinc, and contacting the product of (i) + (ii) with (iii) a compound of titanium or (iii) a compound of titanium plus a compound of vanadium at a concentration of titanium plus vanadium of at most about 2 mols per liter of the inert reaction solvent, the atomic ratio of Mg/Ti or (Ti + V) in (A) being about 3 to about 500.

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