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US 4,544,647 AGranted
Catalyst prepared from organomagnesium compound, organic hydroxyl-containing compound, reducing halide source and transition metal compound
AssigneeThe Dow Chemical Company
InventorsRicardo Fuentes, Jr., Calvin P. Esneault
Life of this patent
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Abstract
A catalyst for polymerizing olefins is the product resulting from mixing in an inert hydrocarbon diluent a mixture of (A) an organomagnesium material, (B) an organic hydroxyl-containing material, (C) a reducing halide source and (D) a transition metal compound.
Claims5
A catalytic product resulting from admixing in an inert hydrocarbon diluent and in an atmosphere which excludes moisture and oxygen
- (A) at least one hydrocarbon soluble organomagnesium material;
- (B) at least one alcoholic organic hydroxyl-containing material;
- (C) at least one reducing halide source;
- and
- (D) at least one transition metal (Tm) compound;
- and wherein
- (1) the components are added in the order (A), (B), (C) and (D) or (A), (B), (D) and (C);
- and
- (2) the components are employed in quantities so as to provide the following atomic ratios
- Mg:Tm of from about 0.1:1 to about 100:1;
- Cl:Mg of from about 3:1 to about 20:1;
- and
- component B is present in a quantity such that for every magnesium and aluminum atom present in component (A) there remains on the average no more than about 0.75 hydrocarbon groups attached to a magnesium atom and an aluminum atom combined.
10 more elements
Dependencies are inferred from the claim text.