Alpha-olefin polymerization catalyst and production of alpha-olefin polymer

摘要: PROBLEM TO BE SOLVED: To obtain a catalyst for producing an α-olefin polymer which has good particle size distribution and such high catalytic activity stereoregular polymn. capability as to dispense with the removal of residues amorphous polymers. SOLUTION: This comprises titanium (III)-compd.-contg. solid component (A), organoaluminum compd. (B), electron-donating (C). The is obtd. by reducing represented formula: Ti(OR )a X4-a (wherein R 1-20C hydrocarbon group; X halogen; 0