Polymerizing olefins with a novel catalyst
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United States of America Patent
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Mar 8, 1983
Grant Date -
N/A
app pub date -
Jan 23, 1981
filing date -
Jan 23, 1981
priority date (Note) -
Expired
status (Latency Note)
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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 alkylaluminum halide. 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.
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