Patent ID: 6051666
Filing Date: 2000-04-18
Classification: C08F

Abstract:
A method for polymerizing at least one olefin comprising:contacting said at least one olefin with a polymerization catalyst and an organometallic compound containing a metal from group 1, 2, 12 or 13 of the Periodic System of Elements under effective polymerization conditions, wherein said catalyst is obtained by a method consisting essentially of(a) contacting metallic magnesium with an aromatic halide represented by RX, wherein R represents an aromatic group containing from 6 to 20 carbon atoms and X represents a halide, under conditions effective to obtain a reaction product I and solid residual products, whereupon the reaction product I is separated from the solid residual products,(b) adding an alkoxy group or an aryloxy group-containing silane compound to the reaction product I at a temperature of from -20.degree. C. to 20.degree. C. to obtain a precipitate whereupon the precipitate is purified to obtain a reaction product II, and(c) subsequently contacting said reaction product II with a halogenized titanium compound comprising titanium tetrachloride to obtain a further product and purifying said further product to obtain said catalyst.