Supported catalysts for the polymerization of ethylene

Details Supported catalysts for the polymerization of ethylene Supported catalysts for the polymerization of ethylene

C - Chemistry, Metallurgy

08

F

252/109

C08F 4/02 (2006.01) C08F 4/64 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1175035

ABSTRACT "Improvements in supported catalysts for the polymeriza- tion of ethylene". A process for the preparation of a catalyst which is highly active in the polymerization of gaseous ethylene is described the process comprising the steps of spray drying an ethanolic solution of MgCl2 to obtain MgCl2 particles of from 3 to 100 microns in size and with a residual alcoholic OH-groups content of from 1.5% to 20% by wt., the MgCl2 in said particles having an X-ray spectrum with a maximum peak at 10.8 angstrom, reacting said particles with a titanium halide in liquid or vapor phase and mixing the obtained reaction product with an alkylaluminium or an alkylaluminium halide in such amount to obtain an atomic ratio Al:Ti of from 100:1 to 5,000:1.

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