Titanium trichloride catalyst component and the process for the

Details Titanium trichloride catalyst component and the process for the Titanium trichloride catalyst component and the process for the

1982-05-12

1984-02-14

Garvin, Patrick

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C08F 464

Patent

active

044315694

ABSTRACT:
A titanium trichloride catalyst component containing a minor amount of prepolymerized alpha-olifin and useful in the polymerization of alpha-olefins is produced by reducing titanium tetrachloride with an organoaluminum compound at low temperatures and then treating the resulting reduced solids product with about 1 to 1,000 wt. % alpha-olefin so as to obtain a prepolymerized titanium trichloride reduced solid. The prepolymerized reduced solid can thereafter be activated to a highly active prepolymerized titanium trichloride by treating the prepolymerized reduced solid with a halogenated hydrocarbon and a Lewis base complexing agent or titanium tetrachloride and a Lewis base complexing agent. The prepolymerized reduced solid and the prepolymerized activated titanium trichloride manifests substantially no evidence of friability upon being subjected to mechanical shearing forces. The resulting prepolymerized activated titanium trichloride composition, when employed in combination with an organo-metal compound results in an unexpectedly highly active catalyst obtaining polymers with high heptane insolubles.

REFERENCES:
patent: 3922322 (1975-11-01), Roger et al.
patent: 4200717 (1980-04-01), Abe et al.
patent: 4295991 (1981-10-01), Wristers
Chem. Abst. 88:121933g Polyolefin Catalyst Raw Material or Component, p. 17, Citing Jap. Appln. 77142691.

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