Abstract: A resin composition, including: a resin component containing propylene units, and a resistance-imparting agent, wherein the resistance-imparting agent is a monomer having a phenol skeleton with hydrogen or an alkyl group having 1 to 3 carbon atoms, bonded to at least one of ortho positions to the hydroxyl group of the phenol skeleton, and has a melting point of 215° C. or less and a molecular weight of 200 or more and 500 or less, a content of the resistance-imparting agent is 0.4 parts by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the resin component, and a content ratio of metal impurities is 0.02% by volume or less.

Abstract: A resin composition, including a resin component containing propylene units, and a resistance-imparting agent, wherein the resistance-imparting agent is a monomer having a phenol skeleton with hydrogen or an alkyl group having 1 to 3 carbon atoms, bonded to at least one of ortho positions to the hydroxyl group of the phenol skeleton, and has a melting point of 145° C. or less and a molecular weight of 200 or more and 500 or less, and a content of the resistance-imparting agent is 0.4 parts by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the resin component.

Abstract: A resin composition contains propylene, ethylene, and styrene, and has a melting point of 140° C. or more and 150° C. or less, and the enthalpy of fusion of the resin composition is 55 J/g or more and 90 J/g or less.

Abstract: A resin composition contains propylene and ethylene and has a melting point of 140° C. or more and 150° C. or less, and an enthalpy of fusion of the resin composition is 60 J/g or more and 100 J/g or less.