Process for producing highly stereoregular alpha -olefin polymers

摘要

alpha -Olefin polymers of high stereoregularity are prepared by polymerizing the alpha -olefin with a catalyst prepared by mixing components (A), (B) and (C): (A) a solid titanium component prepared from an organo-magnesium compound, a silicon halide compound and/or an aluminum halide compound, an electron donor and TiCl4, (B) an organoaluminum activator, and (C) an electron donor.