Preparation of violet ticl.sub.3

Details Preparation of violet ticl.sub.3 Preparation of violet ticl.sub.3

C - Chemistry, Metallurgy

08

F

252/109, 23/161,

C08F 110/00 (2006.01) C08F 4/16 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1095017

ABSTRACT OF THE DISCLOSURE A process is disclosed for the preparation of violet TiCl3 suitable for use as a catalyst in olefin polymerization. The process involves reducing TiCl4 with an organo-aluminium compound and is characterized in that: (a) the TiCl4 is premixed with a complexing agent in an inert organic solvent, the molar ratio complexing agent: TiCl4 being within the range from 0.3:1 to 2:1, (b) the organo-aluminium compound is premixed with a complexing agent in an inert organic solvent, the molar ratio complexing agent: organo-aluminium compound being at least 0.25:1; (c) the reduction is carried out over a period of less than one hour at a temperature within the range 60° to 110°C; and (d) the final concentration of violet TiCl3 in the reaction mixture is at least 0.2 mol./litre.

280290

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