Patent ID: 6268306
Filing Date: 2001-07-31
Classification: C08F

Abstract:
A method for the preparation of a catalyst suitable for use in polymerizing an olefin 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 materials, whereupon the reaction product I is separated from the solid materials;b) adding an alkoxy group or 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 formed is purified to obtain a reaction product II, andc) contacting said purified 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.