| http://www.w3.org/ns/prov#value | - The process for preparing components of catalysts for polymerizing ethylene or mixtures thereof with minor amounts of alpha-olefins of formula CH2 ???CHR, in which R is an alkyl radical containing from 1 to 6 carbon atoms, said components comprising the product obtained by reacting a solid halogenated Ti compound selected from the group consisting of TiCl3 and Ti halogen-alcoholates with a Grignar
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