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

1985-09-24

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526139, 526140, 526141, 526142, 526351, 526904, C08F 464, C08F 1006

Patent

active

045434000

ABSTRACT:
A titanium trichloride catalyst component containing a minor amount of prepolymerized alpha-olefin 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 activate 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.

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patent: 4187385 (1980-02-01), Iwao et al.
patent: 4200717 (1980-04-01), Abe et al.
Chem. Abst. 88:121933g Polyolefin Catalyst Raw Material or Component p. 17 Citing Jap. Appln. No. 77142691.

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