| 摘要 |
PURPOSE:To obtain a catalyst component which produces a olefin polymer having a high bulk density, high stereoregularity and less content of fine polymer powders, by a method wherein a specified amount of a liquid hydrocarbon is incorporated into a solid titanium catalyst component. CONSTITUTION:A magnesium cpd. or magnesium metal, a titanium cpd. and an electron donor are heated or ground together to closely contact them with one another and thereby a solid titanium catalyst component contg. titanium, magnesium, halogen and the electron donor is obtd. After the completion of the reaction, the titanium catalyst component is thoroughly washed with an inert liquid hydrocarbon to purify the titanium catalyst component. Examples of liquid hydrocarbons are n-pentane and cyclohexane. Then the titanium catalyst component in the wet state is dried until the liquid hydrocarbon content becomes 1-10% based on the weight of solid titanium catalyst component.
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