Finely divided aluminoxane, process for producing same and its use
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsMamoru Kioka, Norio Kashiwa
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Abstract
A finely divided aluminoxane comprising an aluminoxane represented by formula [I] or [II] ##STR1## wherein R denotes a hydrocarbon group having 1 to 10 carbon atoms and m denotes an integer of 2 to 50, an average particle size being 5 to 200 .mu.m and a specific an average particle size being 5 to 200 .mu.m and a specific surface area being 20 to 1000 m.sup.2 /g, a process for producing same, and a catalyst component for polymerization of olefins being said finely divided aluminoxane.
Claims32
A finely divided aluminoxane comprising an aluminoxane represented by formula [I] or [II] ##STR15## wherein R denotes a hydrocarbon group having 1 to 10 carbon atoms and m denotes an integer of 2 to 50,
- an average particle size being 5 to 200 .mu.m and a specific surface area being 20 to 1,000 m.sup.2 /g.
A process for producing a finely divided aluminoxane which comprises contacting a solution of an aluminoxane represented by formula [I] or [II] ##STR23## wherein R denotes a hydrocarbon group having 1 to 10 carbon atoms and m denotes an integer of 2 to 50, with an aluminoxane-insoluble or -sparingly soluble solvent to precipitate a finely divided solid aluminoxane in suspension.
A process for producing a finely divided aluminoxane which comprises spray drying a solution of an aluminoxane represented by formula [I] or [II] ##STR29## wherein R denotes a hydrocarbon group having 1 to 10 carbon atoms and m denotes an integer of 6 to 50,
- to form a finely divided solid aluminoxane.
Dependencies are inferred from the claim text.