Japan Polyethylene Corporation

Japan Polypropylene Corporation

Showa Denko K.k.

Masahiro Uematsu

Tomohiko Satou

Yoshika Yamada

Takaaki Hattori

Hiroyuki Shimizu

Yoshikuni Okumura

Junichi Kuroda

Minoru Kobayashi

Yuichiro Yasukawa

Shinya Hayashi

Kazunari Abe

Tetsuya Morioka

Toshiaki Egashira

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

A gas-barrier resin (A) having an oxygen permeability coefficient of 1.0&#xd7;10(cm&#xb7;cm/cm&#xb7;s&#xb7;Pa) or less; and a copolymer (B) containing monomer structural units represented by the formula (1), the formula (2), and the formula (3): where: Rrepresents a hydrogen atom or a methyl group; Rrepresents a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom, a hydroxy group, an alkoxy group, or an amino group; 1, m, and n represent numerical values representing molar proportions of the respective monomer structural units, and n may represent 0; and p represents an integer of from 1 to 4, wherein a ratio of a mass of the copolymer (B) to a total mass of the gas-barrier resin (A) and the copolymer (B) is from 1 mass % to 40 mass %.

Gas-barrier resin composition and use thereof

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).

Multi-component polar olefin copolymer and method for producing the same

A method of producing a polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene and &#x3b1;-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by structural formula (I) or (II), the method comprising random copolymerization in the presence of a transition metal catalyst to obtain a copolymer having a linear molecular structure.

Polar-group-containing olefin copolymer, polar-group-containing multinary olefin copolymer, olefin-based resin composition, and adhesive and layered product each using the same

An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.

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Kanagawa, Japan

Masahiro Uematsu