| http://www.w3.org/ns/prov#value | - As the inert hydrocarbon solvent used in the preparation of the first olefin polymerization solid catalyst and the first olefin polymerization catalyst, there may be mentioned an aliphatic hydrocarbon, such as propane, butane, pentane, hexane, heptane, octane, decane, dodecane and kerosene;
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