Olefin polymer and method for producing olefin polymer

Abstract

Provided is a novel olefin polymer having excellent lightness, excellent moldability, high rigidity, and excellent bending elasticity of a molded product. An olefin polymer characterized by comprising a propylene initial polymer and a polypropylene part, wherein the propylene initial polymer is a propylene initial polymer formed in the presence of an olefin polymerization catalyst, wherein the olefin polymerization catalyst is a contact reaction product of the following substances: a solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and an internal electron donor compound; an organic aluminum compound selected from at least one of the general formula (I); and a first external electron donor compound. The polypropylene part comprises a polymer of propylene formed in the presence of the olefin polymerization catalyst and a second external electron donor compound, wherein the second external electron donor compound has a higher adsorption to the surface of the solid catalyst component for olefin polymerization than the first external electron donor compound.