Abstract: A multi-component ionomer, wherein, in a multi-component copolymer (D) comprising, as essential constitutional units, a structural unit (A) derived from at least one selected from the group consisting of ethylene and an ?-olefin containing 3 to 20 carbon atoms, a structural unit (B) derived from a monomer containing at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group, and a structural unit (C) derived from a specific acyclic monomer, at least a part of at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group of the structural unit (B) is converted into a specific metal-containing carboxylate, and wherein a phase angle ? at which an absolute value G* of a complex modulus measured with a rotational rheometer is 0.1 MPa (G*=0.1 MPa) is from 50 degrees to 75 degrees.

Abstract: This is a resin composition for a film containing an ionomer which comprises, in a copolymer (P) containing a structural unit (A) derived from ethylene and/or an ?-olefin having 3 to 20 carbon atoms, and a structural unit (B) derived from a monomer having a carboxyl group(s) and/or a dicarboxylic anhydride group(s) as essential constitutional units, at least a part of the carboxyl groups and/or the dicarboxylic anhydride groups in the copolymer (P) being converted into a metal-containing carboxylic acid salt(s) containing at least one kind of a metal ion(s) selected from Group 1, Group 2 or Group 12 of the periodic table, and having a phase angle ? at an absolute value G*=0.1 MPa of a complex modulus of elasticity measured by a rotary rheometer of 50 degrees to 75 degrees, and a molded body molded by using the same.

Abstract: A multi-component ionomer, wherein, in a multi-component copolymer (D) comprising, as essential constitutional units, a structural unit (A) derived from at least one selected from the group consisting of ethylene and an ?-olefin containing 3 to 20 carbon atoms, a structural unit (B) derived from a monomer containing at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group, and a structural unit (C) derived from a specific acyclic monomer, at least a part of at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group of the structural unit (B) is converted into a specific metal-containing carboxylate, and wherein a phase angle ? at which an absolute value G* of a complex modulus measured with a rotational rheometer is 0.1 MPa (G*=0.1 MPa) is from 50 degrees to 75 degrees.