abstract |
PROBLEM TO BE SOLVED: To provide a polymerization catalyst capable of producing poly (α-olefin) having high stereoregularity and good fluidity. SOLUTION: (A) A solid component containing magnesium, titanium, halogen and an electron donating compound as essential components, (B) -1) an organoaluminum compound in which the sum of the poling electronegativity values of the atoms bonded to one Al atom is less than 7.8, (B-2) the organic aluminum compound bonded to one Al atom An α-olefin polymerization catalyst comprising an aluminum compound having a total of Pauling's electronegativity values of 7.8 or more, and (C) an alkylalkoxysilane compound. |