| http://www.w3.org/ns/prov#value | - The condition of the preliminary polymerization is preferably adjusted so that the intrinsic viscosity [??] (measured in decalin at 135??? C.) of the product of preliminary polymerization is at least 0.2 dl/g, preferably at least 0.5 dl/g, and amount of the product of preliminary polymerization per 1 mmol of transition metal in catalyst is 1 to 10000 g, particularly 10 to 1000 g.
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