Process for the production of titanium trichloride catalyst

Details Process for the production of titanium trichloride catalyst Process for the production of titanium trichloride catalyst

C - Chemistry, Metallurgy

08

F

252/109, 402/584

C08F 4/16 (2006.01) B01J 27/10 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1095495

ABSTRACT OF THE DISCLOSURE A titanium trichloride catalytic complex is produced by reducing titanium tetrachloride with an alkylaluminum halide composition at low temperature and then treating the resulting reduced solids product by contact- ing it at elevated temperature with a dialkyl-ether having alkyl groups of 4 to 5 carbon atoms and with hexachloroethane, the proportion of dialkyl ether being at least 1 mol per 1 mol of hexachloroethane and the proportion of hexa- chloroethane being at least greater than about 0.5 mol per 1 gram atom of titanium in the reduced solids product. The resulting titanium trichloride complex composition, when empolyed as cocatalyst with an organo-metal compound for Ziegler-type catalysts in polymerization of -olefins, results in uniform polymer grains with unexpectedly high polymerization activity and high stereo- regular polymer yielding rations.

307955

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