Catalyst component for polymerization of olefins
AssigneeToa Nenryo Kogyo Kabushiki Kaisha
InventorsTakeshi Nomura, Kouji Maruyama, Hiroshi Ueno, Naomi Inaba
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Abstract
A catalyst component for the polymerization of olefins and particularly ethylene which is prepared by contacting a contact product of a magnesium alkoxide, a halogenated hydrocarbon, a halogenated silane with a titanium compound. The catalyst component in combination with a organoaluminum cocatalyst is useful for the polymerization of ethylene having a high melt index.
Claims10
A catalyst component for use in the polymerization of olefins which is obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R".sub.m SiX.sub.4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
A catalyst for the polymerization of olefins comprising (a) an organoaluminum compound represented by the formula R"".sub.n AlX.sub.3-n, wherein R"" is an alkyl or aryl group, X" is a halogen atom, alkoxy group or hydrogen atom, and is in the range of 1.ltoreq.n.ltoreq.3, and (b) a catalyst component obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R".sub.m SiX.sub.4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
Dependencies are inferred from the claim text.