Claims
- 1. A method for the polymerization or copolymerization of monoolefins which comprises contacting said monolefin with a catalyst system composed of an aluminum derivative of the formula AlR.sub.p X.sub.3-p in which R is a hydrocarbonaceous radical, X is a halogen radical and p is a number from 1 to 3; in combination with a composition based on a titanium halide in which said titanium has a valence of three or greater and a halide of a metal, said metal selected from zirconium, molybdenum, zinc or calcium, said composition prepared by reacting a titanium compound with the vapors of one or more of said metals in the presence of a halogen donor, and wherein the metal:titanium molar ratio is greater than 1:n, n being the valency of the metal with the greatest valency.
- 2. The method of claim 1 wherein said titanium compound is selected from titanium halides, titanium alcoholates, titanium amides or titanium chelates.
- 3. The method of claim 2 wherein said titanium compound is the titanium halide titanium tetrachloride.
- 4. The method of claim 2 wherein said titanium compound is the titanium halide, in complex form, TiCl.sub.3 AlCl.sub.3.
- 5. The method of claim 1 wherein said vaporized metal is selected from zinc or calcium.
- 6. The method of claim 1 wherein said halogen donor is selected from organic halides of the formula C.sub.m H.sub.2m+2-x X.sub.x in which X is Cl or Br, m is a number from 1 to 18 and x is a number from 1 to 4; or an inorganic halide.
- 7. The method of claim 6 wherein said halogen donor is the organic halide 1-chlorohexane.
- 8. The method of claim 6 wherein said halogen donor is an inorganic halide selected from SnCl.sub.4, SbCl.sub.5, POCl.sub.3 or VCl.sub.4.
- 9. The method of claim 1 wherein said aluminum derivative is Al(isobutyl).sub.3.
- 10. The method according to claim 1 wherein the polymerization reaction is carried out in the presence of a hydrocarbonaceous solvent.
- 11. The method according to claim 1 wherein the polymerization reaction is carried out at a temperature from 20.degree. C. to 200.degree. C.
- 12. The method according to claim 1 wherein the polymerization reaction is carried out under a pressure between 1 and 60 atm.
- 13. The method according to claim 1 wherein the olefine is ethylene.
- 14. The method according to claim 1 wherein as the monomer to be polymerized a mixture of ethylene with one or more alphaolefines is employed.
Priority Claims (1)
Number |
Date |
Country |
Kind |
25232 A/77 |
Jun 1977 |
ITX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a division of application Ser. No. 915,998, filed June 16, 1978 (now U.S. Pat. No. 4,203,866, issued May 20, 1980).
US Referenced Citations (6)
Non-Patent Literature Citations (1)
Entry |
Timms, "Synthetic Reactions of Metal Atoms at Temperatures of 10.degree. to 273.degree. K.," Angewandte Chemie, 14, No. 5, pp. 273-277, May, 1975. |
Divisions (1)
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Number |
Date |
Country |
Parent |
915998 |
Jun 1978 |
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