Catalyst for olefin polymerization and process for olefin polymerization using the same.

摘要

Catalyst for olefin polymerization comprising (A) a compound of a transition metal in Group IVB of the periodic table which contains a ligand having a cyclopentadienyl skeleton, (B) an organoaluminum compound and (C1) a Broensted acid; (C2) a material obtainable by contacting (c-1) a magnesium compound with (c-2) an electron donor; or (C3) a material obtainable by contacting (c-1), a magnesium compound, (c-2) an electron donor and (c-3) an organometallic compound with each other. Processes for polymerizing an olefin in the presence of the above-mentioned catalysts are excellent in olefin polymerization activity and economical efficiency.