| http://www.w3.org/ns/prov#value | - The use of other catalysts or catalyst components--namely, solid, transition metal-based catalyst components for the polymerization or copolymerization of alpha-olefins, including such solid components supported on a metal oxide, halide or other salt such as widely-described magnesium-containing, titanium halide-based catalyst components--than those described as being useful for the process disclo
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