There are provided;
- (i) a solid catalyst component obtained by contacting a trivalent titanium
atom-containing solid catalyst component precursor (C) with a halogeno compound
(A) of the 13 or 14 group of elements in the periodic table of the elements and
an electron donor (B), or a solid catalyst component obtained by contacting an
intermediate product with a titanium-halogen bond-carrying compound (D), the intermediate
product being obtained by contacting the solid catalyst component precursor (C)
with a halogeno compound (A) of the 14 group of elements in the periodic
table of the elements and the electron donor (B), or a solid catalyst component
comprising a magnesium atom, a titanium atom, a halogen atom and an electron donor
and having a relative surface area of not more than 30 m2/g, the catalyst
component being superior in a particle form, and
- (ii) a catalyst comprising the solid catalyst component and an organoaluminum
compound, the catalyst being high in polymerization activity.
|
|
|
