Olefin polymerization catalyst component, olefin polymerization catalyst and process for the polymerization of olefins
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsMamoru Kioka, Toshiyuki Tsutsui, Akinori Toyota
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Abstract
In accordance with the present invention, there are provided olefin polymerization catalyst components comprising an organoaluminum oxy-compound having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C., and olefin polymerization catalyst containing said olefin polymerization catalyst components. The olefin polymerization catalysts have excellent polymerization activities, and are capable of giving olefin (co)polymers having a narrow molecular weight distribution and a narrow composition distribution.
Claims15
An olefin polymerization catalyst component comprising an organoaluminum oxy-compound having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C., a ratio (D.sub.1220 /D.sub.1220) of an absorbance (D.sub.1260) at 1260 cm.sup.-1 to an absorbance (D.sub.1220) at 1220 cm.sup.-1, both obtained by infrared spectrophotometry, of less than 0.09, and the organoaluminum oxy-compound being prepared by bringing a solution of aluminoxane into contact with water or an active hydrogen containing compound.
An olefin polymerization catalyst component comprising an organoaluminum oxy-compound having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C., a ratio (D.sub.1260 /D.sub.1220) of an absorbance (D.sub.1260) at 1260 cm.sup.-1 to an absorbance (D.sub.1220) at 1220 cm.sup.-1, both obtained by infrared spectrophotometry, of less than 0.09, and the organoaluminum oxy-compound being prepared by bringing a solution of organoaluminum compound into contact with water, wherein the water is used in such an amount that the organoaluminum atoms dissolved in the reaction system become less than 20% based on the total organoaluminum atoms.
Dependencies are inferred from the claim text.