Dimethylaluminum chloride-activated olefin polymerisation...

Details Dimethylaluminum chloride-activated olefin polymerisation... Dimethylaluminum chloride-activated olefin polymerisation...

C - Chemistry, Metallurgy

08

F

252/109, 402/565

C08F 4/642 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2032543

F-5640-L ABSTRACT A catalyst composition for polymerisating olefins, particularly alpha-olefins, is prepared by contacting a magnesium compound in an electron donor compound with a titanium compound, contacting the resulting solution with a solid, inert porous carrier to form a catalyst precursor, and activating the precursor with dimethylaluminum chloride. The polymer products have lower melting points, and more homogeneous distribution of branches among the polymer molecules than polymers prepared with similar catalyst precursors but activated with different alkylaluminum activators, e.g., triethylaluminum or trimethylaluminum.

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