POLYOLEFIN RESIN COMPOSITION

摘要

Disclosed is a polyolefin resin composition having a sufficient stabilizing effect and an excellent cost performance. This polyolefin resin composition contains a polyolefin resin, for which a phenol antioxidant represented by general formula (I) has been masked with an organic aluminum compound, and a phosphorous antioxidant, are added to a catalyst system or a polymerization system and polymerized prior to or during polymerization of an olefin monomer; wherein 0.001-0.5 parts by mass of the phenol antioxidant represented by the general formula (I) and 0.001-3 parts by mass of the phosphorous antioxidant are added with respect to 100 parts by mass of the olefin monomer. (In the formula, R represents an alkyl group having 1-30 carbon atoms or an alkylene group having 2-30 atoms, and which can have a branch and/or a cycloalkyl group; a cycloalkyl group having 3-12 carbons atoms which can have a substituent group; or an aryl group having 6-18 carbon atoms which can have a substituent group.)