Organo zirconium-chromium compound, catalyst prepared therefrom

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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252429C, 252430, 252441, 526114, C08F 464

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active

043760651

ABSTRACT:
Dual transition metal compounds containing zirconium and chromium are prepared by reacting a tetrahydrocarbyloxy zirconium compound such as tetraisopropoxy zirconium or a tetravalent hydrocarbyloxy zirconium halide such as triisopropoxy zirconium halide with a chromium compound such as CrO.sub.3. These compounds, as well as combinations of other soluble chromium and zirconium compounds, are useful in the polymerization of .alpha.-olefins to produce polymers having a high molecular weight and a narrow molecular weight distribution.

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