Titanium trichloride catalyst system for polymerizing olefins

Details Titanium trichloride catalyst system for polymerizing olefins Titanium trichloride catalyst system for polymerizing olefins

1993-10-15

1996-05-21

Cross, E. Rollins

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

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502102, 502152, 526126, B01J 3100

Patent

active

055189733

ABSTRACT:
A TiCl.sub.3 catalyst system is disclosed employing the electron donor, dicyclopentyldimethoxysilane ("DCPMS"). Additionally disclosed is a process for polymerizing olefins in the presence of a catalyst system employing a titanium trichloride catalyst, an alkylaluminum cocatalyst, and dicyclopentyldimethoxysilane is provided. The polymerization process comprises providing a prepolymerized titanium trichloride catalyst, and polymerizing an .alpha.-olefin in the presence of the prepolymerized catalyst, a trialkylaluminum co-catalyst and dicyclopentyldimethoxysilane. The catalyst system of the invention provides increased catalyst activity for a TiCl.sub.3 catalyst and a very broad polymer molecular weight distribution.

REFERENCES:
patent: 4295991 (1981-10-01), Wristers
patent: 4990477 (1991-02-01), Kioka et al.
patent: 4990479 (1991-02-01), Ishimaru et al.
patent: 5244989 (1993-09-01), Hara et al.

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