| 摘要 |
A solid catalyst component which can produce alpha -olefin polymers having a high stereoregularity and a good powder fluidity, stably and with a good efficiency in gas phase polymerization, particularly in gas phase copolymerization, a catalyst for alpha -olefin polymerization using the above solid catalyst component and a process for producing the above catalyst component, are provided, which solid catalyst component is charcterized in that it contains titanium as an active ingredient and is in the form of hollow fine particles, and which process is characterized by adding a reaction product (I) of an organoaluminum compound (A) with an electron dnor (B1) to TiCl4 and reacting these under agitation in a baffle ratio of 0.35 or less with a power required for agitation of 2.50 KW/m3 or less at a temperature of 0 DEG to 70 DEG C. for a period of 1 to 10 hours and further reacting an electron donor (B2) and an electron acceptor (E) with the resulting solid product (II) to obtain a solid product (III) i.e. the solid catalyst component. |
