Novel polymerization catalyst and process for using same to poly

Details Novel polymerization catalyst and process for using same to poly Novel polymerization catalyst and process for using same to poly

1982-07-26

1983-08-09

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526129, 526351, C08F 464, C08F 1000

Patent

active

043980058

ABSTRACT:
There is provided a solid, particulate, catalytic complex suitable for the stereospecific polymerization of olefins prepared by reducing TiCl.sub.4, contacting the resultant reduced solid with a complexing agent to obtain a treated solid and contacting the treated solid with TiCl.sub.4 in the presence of silica which has been treated with an aromatic ester. When such a catalyst complex is combined with a suitable activator to polymerize olefins, a high degree of stereospecificity is attained, the activity of the catalyst complex is reduced for polymerization control and the efficiency of the titanium employed is enhanced.

REFERENCES:
patent: 4081589 (1978-03-01), Peters et al.
patent: 4210735 (1980-07-01), Hermans et al.
patent: 4210738 (1980-07-01), Hermans et al.
patent: 4282341 (1981-08-01), Klaerner et al.
patent: 4315999 (1982-02-01), Matsumra et al.

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