Olefin polymerization catalysts

Details Olefin polymerization catalysts Olefin polymerization catalysts

C - Chemistry, Metallurgy

08

F

252/109, 402/640

C08F 4/64 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1121329

A B S T R A C T A process for the preparation of an olefin polymerisation catalyst comprising reducing TiC14 with an organo aluminium compound in the presence of a dialkyl ether, characterized in that TiC14 is re- duced with an aluminium trihydrocarbyl compound in a molar ratio of Ti:Al of 2.7:1 to 4.0:1 in the presence of diisoamyl ether and a hydrocarbon solvent by gradually adding TiC14 to the aluminium trihydro- carbyl compound at a temperature of from 15 to 50°C during a period of from 0.7 to 2.5 hours to produce a precipitate of TiC13, whereupon this precipitate is converted into active TiC13 by heating at a temperature of from 80 to 110°C during at least 30 minutes.

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