Claims
- 1. A catalyst system for the polymerization of olefins consisting essentially of
- (A) an organoaluminum compound represented by the formula: AlR.sub.m.sup.1 X.sub.3-m.sup.1 wherein R.sup.1 is a hydrocarbon group having 1 to 8 carbon atoms, X.sup.1 is a halogen atom or an alkoxy group having 1 to 8 carbon atoms and m is a number in the range of 1 to 3, and
- (B) a product prepared by reacting a solid organomagnesium halide which is obtained by the reaction of magnesium and a halogenated hydrocarbon compound represented by the formula: R.sup.3 X.sup.3 wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms and X.sup.3 is a halogen atom in an hydrocarbon solvent and has a general formula: MgR.sub.l.sup.3 X.sub.2-l.sup.3 wherein R.sup.3 and X.sup.3 are as defined above and l is a number in the range of 1.25.gtoreq.l.gtoreq.0.01 with an ether selected from the group consisting of diethyl ether, di-n-propyl ether, di-n-butyl ether, di-isoamyl ether, anisole, ethyl phenyl ether, diphenyl ether, tetrahydrofuran and dioxane in a hydrocarbon solvent at 0.degree. C. to 50.degree. C., the molar ratio of ether to solid organomagnesium halide being in the range of 0.01/1 to 10/1, and reacting the thus obtained activated solid organomagnesium halide with a titanium compound selected from the group represented by the formula: Ti(OR.sup.2).sub.p X.sub.q.sup.2 wherein R.sup.2 is a hydrocarbon group having 1 to 8 carbon atoms, X.sup.2 is a halogen atom and p and q are each a number satisfying the following ranges: 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4 and p+q=3 or 4, at a temperature of -60.degree. C. to 200.degree. C., the molar ratio of titanium compound to activated organomagnesium halide being in the range of 0.01/1 to 100/1.
- 2. A catalyst system according to claim 1, wherein said solid organomagnesium halide is a member selected from the group consisting of methyl-, ethyl-, butyl- and octyl-magnesium chloride, bromide and iodide, naphthyl magnesium chloride, p-tolylmagnesium chloride, and 2,4,6-trimethylphenylmagnesium chloride.
- 3. A catalyst system according to claim 1, wherein l is a number in the range of 0.95.gtoreq.l.gtoreq.0.01.
- 4. A catalyst system according to claim 1, wherein the hydrocarbon solvent used for the reaction of an ether with solid organomagnesium halide or the reaction of magnesium and a halogenated hydrocarbon compound is a member selected from the group consisting of n-hexane, cyclohexane, n-heptane, benzene, and toluene.
- 5. A catalyst system according to claim 1, wherein the amount of the ether is in the range of 0.1 to 2 moles per 1 mole of the organomagnesium halide.
- 6. A catalyst system according to claim 1, wherein the organoaluminum compound is a trialkylaluminum of the formula: Al(R.sup.1).sub.3 wherein R.sup.1 is an alkyl group having 1 to 8 carbon atoms.
- 7. A catalyst system according to claim 1, wherein the organoaluminum compound is a mixture of a trialkylaluminum of the formula: Al(R.sup.1).sub.3 and a dialkylaluminum halide of the formula: Al(R.sup.1).sub.2 X.sup.1 wherein R.sup.1 is an alkyl group having 1 to 8 carbon atoms and X.sup.1 is a halogen atom, in a mixed ratio of the trialkylaluminum to the dialkylaluminum halide of 4:1 to 1:4 by mole.
- 8. A catalyst system according to claim 1, wherein the titanium compound is titanium tetrachloride.
- 9. A catalyst system according to claim 1, and further including an ester of a carboxylic acid in an amount of up to 1 mole per 1 mole of the organoaluminum compound (A), wherein the organoaluminum compound (A) is used in an amount of 1 to 10,000 moles per 1 molar atom of titanium atom in the product (B).
- 10. A process for producing an olefin polymer which comprises polymerizing an olefin having 2 to 8 carbon atoms at 20.degree. to 200.degree. C. under normal pressure to 100 kg/cm.sup.2 in the presence of a catalyst system as set forth in anyone of claims 1, 9, 2, 3, 4, 5, 6, 7 or 8.
- 11. A process according to claim 10, wherein said monomer is a member selected from the group consisting of ethylene, propylene and butene-1.
- 12. A process according to claim 10, wherein said monomer is a member selected from the group consisting of ethylene and propylene.
Priority Claims (1)
Number |
Date |
Country |
Kind |
53/11157 |
Feb 1978 |
JPX |
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Parent Case Info
This is a Continuation-in-Part application of Ser. No. 7,844 filed on Jan. 30, 1979, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (8)
Number |
Date |
Country |
2125107 |
Dec 1971 |
DEX |
2230752 |
Dec 1972 |
DEX |
2633195 |
Jan 1977 |
DEX |
51-64586 |
Jun 1976 |
JPX |
52-78691 |
Jul 1977 |
JPX |
52-152485 |
Dec 1977 |
JPX |
52-153896 |
Dec 1977 |
JPX |
1464909 |
Feb 1977 |
GBX |
Non-Patent Literature Citations (2)
Entry |
G. E. Coats, M. L. H. Green, P. Powell, K. Wade; "Principles of Organometallic Chemistry", 1968, Methuen & Co., Ltd., London. |
"Hand Book of Organometallic Compound", issued by Asakura Shoten, Tokyo, 1967, pp. 38-41. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
7844 |
Jan 1979 |
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