Process for producing .alpha.-olefin polymers

Details Process for producing .alpha.-olefin polymers Process for producing .alpha.-olefin polymers

C - Chemistry, Metallurgy

08

F

252/109, 402/645

C08F 4/64 (2006.01) C08F 10/00 (2006.01) C08F 297/08 (2006.01)

Patent

CA 1151142

ABSTRACT OF THE DISCLOSURE A process, for producing .alpha.-olefin polymers is provided which comprises: reacting an organoaluminum compound with an electron donor in a specified ratio in a solvent at a specified temperature to obtain a solid product (I); reacting solid product (I) with TiCl4 at a specified temperature in a specified ratio of A?/Ti and then removing a liquid portion from the resulting material followed by washing to obtain a solid product (II) having no free TiCl4: reacting solid product (II) with an electron donor and an electron acceptor in a specified ratio at a specified temperature to obtain a solid product (III); and polymerizing .alpha.-olefin(s) in the presence of a catalyst comprising a combination of solid product (III) with an organoaluminum compound. This process provides a catalyst having a high storing and thermal stability and a polymer having a uniform particle size.

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