Japan Polypropylene Corporation

Japan Polyethylene Corporation

Yoshika Yamada

Masahiro Uematsu

Tomohiko Satou

Minoru Kobayashi

Kohei Takamitsu

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 α-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 δ 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.

Multi-component ionomer

Provided is a polar group-containing multi-component olefin copolymer comprising: structural units (A) derived from ethylene or an α-olefin; structural units (B) having a carboxyl group or a structure which forms a carboxyl group by an elimination reaction due to heat or an acid; and structural units (C) derived from acrylic acid, which do not have a carboxyl group, and which do not cause an elimination reaction due to heat or an acid under the same conditions as those for the elimination reaction due to heat or an acid in which the structural units (B) form a carboxyl group.

Polar group-containing olefin copolymer

An object of the present invention is to provide a multi-component polar olefin copolymer which has sufficiently improved solvent solubility without impairing mechanical properties and the like. The present invention relates to a multi-component polar olefin copolymer containing: one kind of unit of nonpolar monomer (X1) that is ethylene or an &#x3b1;-olefin having 3 to 10 carbon atoms; one or two or more kinds of units of polar monomers (formula (1), Z1); and structural unit(s) of one or two or more kinds of units of nonpolar monomers (X2) that are different from the above X1 and/or one or two or more kinds of units of polar monomers (formula (2), Z2):HC&#x2550;CH&#x2014;COOQT1&#x2003;&#x2003;(1)HC&#x2550;CH-T2&#x2003;&#x2003;(2).

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Mie, Japan

Yoshika Yamada