Claims
- 1. A solid, hydrocarbon-insoluble alpha-olefin polymerization catalyst component comprises a product formed by:
- A. Forming a solution of a magnesium carbonate or a magnesium carboxylate;
- B. Precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and a morphology affecting component;
- C. Reprecipitating such solid particles from a mixture containing a cyclic ether; and
- D. Treating the reprecipitated particles with a transition metal compound and an electron donor.
- 2. The catalyst component of claim 1 wherein the transition metal halide in Step B is a titanium tetrachloride.
- 3. The catalyst component of claim 1 wherein the transition metal compound in Step D is a titanium tetrachloride.
- 4. The catalyst component of claim 1 wherein the cyclic ether is tetrahydrofuran, tetrahydropyran or 2-methyltetrahydrofuran.
- 5. The catalyst component of claim 1 wherein the cyclic ether in Step C is tetrahydrofuran.
- 6. The catalyst component of claim 1 wherein the particles from Step C are treated in Step D with titanium tetrachloride and then with titanium tetrachloride in the presence of an electron donor.
- 7. The catalyst component of claim 1 wherein the electron donor is a dialkylphthalate ester.
- 8. The catalyst component of claim 1 wherein the electron donor is diisobutylphthalate, diethylphthalate, di-t-butylphthalate, or di-n-butylphthalate.
- 9. A solid, hydrocarbon-insoluble alpha-olefin polymerization catalyst component comprises a product formed by:
- A. Forming a solution of a magnesium carbonate or a magnesium carboxylate;
- B. Precipitating solid particles from such magnesium-containing solution by treatment with a titanium halide;
- C. Reprecipitating such solid particles from a mixture containing a cyclic ether; and
- D. Treating the reprecipitated particles with a transition metal compound and an electron donor.
- 10. The catalyst component of claim 9 wherein the solution of magnesium-containing species is formed from a magnesium alkoxide and carbon dioxide.
- 11. The catalyst component of claim 10 wherein the titanium halide in Step B is a titanium tetrachloride.
- 12. The catalyst component of claim 11 wherein the titanium halide in Step D is a titanium tetrachloride.
- 13. The catalyst component of claim 12 wherein the cyclic ether is tetrahydrofuran, tetrahydropyran or 2-methyltetrahydrofuran.
- 14. The catalyst component of claim 13 wherein the cyclic ether in Step C is tetrahydrofuran.
- 15. The catalyst component of claim 14 wherein the electron donor is a dialkylphthalate ester.
- 16. The catalyst component of claim 15 wherein the dialkylphthalate ester is diisobutylphthalate, diethylphthalate, di-t-butylphthalate, or di-n-butylphthalate.
- 17. The catalyst component of claim 1 wherein the solution of magnesium-containing species is formed from a magnesium alkoxide and carbon dioxide.
- 18. The catalyst component of claim 1 wherein the solution of magnesium-containing species is formed from a magnesium ethoxide and carbon dioxide.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a division of application Ser. No. 186,359 filed Apr. 25, 1988, now U.S. Pat. No. 4,866,022, which is a continuation of Ser. No. 055,430 filed May 28, 1987, abandoned, which is a continuation-in-part to Ser. No. 875,180 filed June 17, 1986, abandoned, which is a continuation-in-part to Ser. No. 741,858 filed June 6, 1985, now U.S. Pat. No. 4,612,299, which is a continuation-in-part to Ser. No. 629,106 filed Jul. 9, 1984, abandoned, and Ser. No. 592,910 filed Mar. 23, 1984, now U.S. Pat. No. 4,540,679; the specifications and claims of which are incorporated herein by reference.
US Referenced Citations (21)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0086643 |
Aug 1983 |
EPX |
0086645 |
Sep 1986 |
EPX |
1539900 |
Feb 1979 |
GBX |
2111066 |
Jun 1983 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Chemicky Primysl (Chemical Industry), 6/61, 72(1986), No. 2. |
"High Yield Catalysts in Olefin Polymerization," Die Angewandte Makromolekulare Chemie, 120 (1984), pp. 73-90. |
Divisions (1)
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Number |
Date |
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Parent |
186359 |
Apr 1988 |
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Continuations (1)
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Number |
Date |
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Parent |
55430 |
May 1987 |
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Continuation in Parts (3)
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Number |
Date |
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Parent |
875180 |
Jun 1986 |
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Parent |
741858 |
Jun 1985 |
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Parent |
629106 |
Jul 1984 |
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