Catalyst and process for polymerizing alpha-olefins

Details Catalyst and process for polymerizing alpha-olefins Catalyst and process for polymerizing alpha-olefins

C - Chemistry, Metallurgy

08

F

C08F 4/643 (2006.01) C08F 4/645 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/02 (2006.01)

Patent

CA 2104634

1. "CATALYST AND PROCESS FOR POLYMERIZING ALPHA-OLEFINS" Abstract An active catalyst in the polymerization of alpha-olefins is obtained by: (i) bringing a dialkyl magnesium, or an alkyl magnesium halide into contact with a silicon or tin halide, in solution in an inert organic solvent, until a granular solid precipitates off; (ii) suspending said solid precipitate in an inert organic solvent and bringing it into contact with a compound which can be defined by the formula: Image wherein M represents a metal from Group IVB of the Periodic Table of Elements, and each R and Cp has the meaning as reported in the disclosure, in order to form a granular solid catalyst; and 2. (iii) recovering said solid catalyst from the resulting suspension.

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