Abstract: A thermoplastic elastomer composition including: 100 parts by mass of a hydrogenated block copolymer (a); from 10 to 50 parts by mass of a polypropylene resin (b); from 5 to 100 parts by mass of a polyphenylene ether resin (c); and from 75 to 200 parts by mass of a non-aromatic softener (d), wherein the hydrogenated block copolymer (a) contains a hydrogenated block copolymer (a-1) obtained by hydrogenation, the hydrogenated block copolymer (a-1) comprising at least one polymer block A1 including mainly a vinyl aromatic hydrocarbon compound monomer unit, and at least one polymer block B1 including mainly a conjugated diene compound monomer unit, a weight-average molecular weight of the hydrogenated block copolymer (a-1) is from 100,000 to 550,000, and a content of all vinyl aromatic hydrocarbon compound monomer units in the hydrogenated block copolymer (a-1) is more than 20% by mass and 50% by mass or less.

Abstract: A hydrogenated block copolymer (P) obtained by hydrogenation of a coupled polymer represented by (A-B)n-X, wherein the content of the vinyl aromatic monomer unit in the hydrogenated block copolymer (P) is 10 mass % to 40 mass %, the peak top molecular weight of a diblock component corresponding to (A-B) in (A-B)n-X is 160,000 to 225,000, the proportion of a dibranched component corresponding to a case in which n is 2 in (A-B)n-X is 10 mass % to 30 mass % based on the total hydrogenated block copolymer (P), the proportion of a tribranched component corresponding to a case in which n is 3 in (A-B)n-X is 40 mass % to 70 mass % based on the total hydrogenated block copolymer (P), and the ratio of the tribranched component to the dibranched component M (mass of tribranched component/mass of dibranched component) is 2 or more.

Abstract: A thermoplastic elastomer composition including: 100 parts by mass of a hydrogenated block copolymer (a); from 10 to 50 parts by mass of a polypropylene resin (b); from 5 to 100 parts by mass of a polyphenylene ether resin (c); and from 75 to 200 parts by mass of a non-aromatic softener (d), wherein the hydrogenated block copolymer (a) contains a hydrogenated block copolymer (a-1) obtained by hydrogenation, the hydrogenated block copolymer (a-1) comprising at least one polymer block A1 including mainly a vinyl aromatic hydrocarbon compound monomer unit, and at least one polymer block B1 including mainly a conjugated diene compound monomer unit, a weight-average molecular weight of the hydrogenated block copolymer (a-1) is from 100,000 to 550,000, and a content of all vinyl aromatic hydrocarbon compound monomer units in the hydrogenated block copolymer (a-1) is more than 20% by mass and 50% by mass or less.

Abstract: A polyolefin-based resin composition comprising: a polyolefin-based resin, and a hydrogenated block copolymer having a polymer block A mainly containing a vinyl aromatic monomer unit and a polymer block B mainly containing a conjugated diene monomer unit, wherein a mass ratio of the polyolefin-based resin/the hydrogenated block copolymer is 95 to 5 parts by mass/5 to 95 parts by mass, a total vinyl aromatic monomer unit content in the hydrogenated block copolymer is 12 to 25 mass %, a degree of hydrogenation of double bonds based on the conjugated diene monomer unit in the hydrogenated block copolymer is 90 mol % or more, and a melt flow rate value is 7 to 26 g/10 min.

Abstract: The present invention provides a foam which maintains high hardness while being lightweight and has excellent peel strength and permanent compression set, and a foamable composition used to obtain the aforementioned foam. A foamable composition comprising (A) an olefin-based copolymer; (B) a copolymer that is (B-I) and/or (B-II) described below, (B-I) a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and a conjugated diene, and/or a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and alkylene, (B-II) an ethylene-based copolymer having an unsaturated group; (C) an inorganic filler; (D) an organic silane coupling agent; and (E) a foaming agent; wherein a mass ratio of the component (A) to the component (B), (A/B), is from 5/95 to 100/0; an amount of the component (C) is from 0.5 to 35 mass parts, and an amount of the component (E) is from 0.

Abstract: This thermoplastic elastomer composition comprises: 100 parts by mass of a hydrogenated block copolymer (a); from 3 to 50 parts by mass of a polypropylene-based resin (b), from 5 to 100 parts by mass of a polyphenylene ether resin (c), and from 50 to 200 parts by mass of a non-aromatic softener (d), the hydrogenated block copolymer (a) is able to be formed by hydrogenating a block copolymer that comprises at least one polymer block A comprising a vinyl aromatic hydrocarbon compound monomer unit as a primary component and at least one polymer block B comprising a conjugated diene compound monomer unit as a primary component, and a weight average molecular weight of the hydrogenated block copolymer (a) is from 100,000 to 350,000.

Abstract: A polyolefin-based resin composition comprising: a polyolefin-based resin, and a hydrogenated block copolymer having a polymer block A mainly containing a vinyl aromatic monomer unit and a polymer block B mainly containing a conjugated diene monomer unit, wherein a mass ratio of the polyolefin-based resin/the hydrogenated block copolymer is 95 to 5 parts by mass/5 to 95 parts by mass, a total vinyl aromatic monomer unit content in the hydrogenated block copolymer is 12 to 25 mass %, a degree of hydrogenation of double bonds based on the conjugated diene monomer unit in the hydrogenated block copolymer is 90 mol % or more, and a melt flow rate value is 7 to 26 g/10 min.

Abstract: This thermoplastic elastomer composition comprises: 100 parts by mass of a hydrogenated block copolymer (a); from 3 to 50 parts by mass of a polypropylene-based resin (b), from 5 to 100 parts by mass of a polyphenylene ether resin (c), and from 50 to 200 parts by mass of a non-aromatic softener (d), the hydrogenated block copolymer (a) is able to be formed by hydrogenating a block copolymer that comprises at least one polymer block A comprising a vinyl aromatic hydrocarbon compound monomer unit as a primary component and at least one polymer block B comprising a conjugated diene compound monomer unit as a primary component, and a weight average molecular weight of the hydrogenated block copolymer (a) is from 100,000 to 350,000.

Abstract: The present invention provides a crosslinked foam having an excellent balance of various physical properties in terms of lightness, flexibility, permanent compression set, tear strength, impact resilience, and molding stability; a shoe midsole; and a crosslinkable and foamable composition that provides the crosslinked foam and shoe midsole. A crosslinkable and foamable composition comprising (A) an ethylene-based copolymer; (B) a copolymer comprising a vinyl aromatic monomer unit and an unsaturated bond-containing a conjugated diene monomer unit; (C) an organic peroxide; and (D) a foaming agent; a mass ratio of the component (A) to the component (B), (A/B), being from 97/3 to 50/50; and the component (B) comprising 5 mass % or more and 80 mass % or less of the vinyl aromatic monomer unit, and 5 mass % or more and 55 mass % or less of the conjugated diene monomer unit.

Abstract: It is an object of the present invention to provide a hydrogenated block copolymer pellet, which has the ability to become a molded product that is excellent in transparency, flexibility, bleeding resistance, and low combustion ash content, without causing blocking among pellets. A hydrogenated block copolymer pellet having 100 parts by mass of a pellet molded product of hydrogenated block copolymer A and 0.01 to 1.

Abstract: It is an object of the present invention to provide a hydrogenated block copolymer pellet, which has the ability to become a molded product that is excellent in transparency, flexibility, bleeding resistance, and low combustion ash content, without causing blocking among pellets. A hydrogenated block copolymer pellet having 100 parts by mass of a pellet molded product of hydrogenated block copolymer A and 0.01 to 1.

Abstract: The present invention provides a foam which maintains high hardness while being lightweight and has excellent peel strength and permanent compression set, and a foamable composition used to obtain the aforementioned foam. A foamable composition comprising (A) an olefin-based copolymer; (B) a copolymer that is (B-I) and/or (B-II) described below, (B-I) a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and a conjugated diene, and/or a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and alkylene,(B-II) an ethylene-based copolymer having an unsaturated group; (C) an inorganic filler; (D) an organic silane coupling agent; and (E) a foaming agent; wherein a mass ratio of the component (A) to the component (B), (A/B), is from 5/95 to 100/0; an amount of the component (C) is from 0.5 to 35 mass parts, and an amount of the component (E) is from 0.

Abstract: The present invention provides a crosslinked foam having an excellent balance of various physical properties in terms of lightness, flexibility, permanent compression set, tear strength, impact resilience, and molding stability; a shoe midsole; and a crosslinkable and foamable composition that provides the crosslinked foam and shoe midsole. A crosslinkable and foamable composition comprising (A) an ethylene-based copolymer; (B) a copolymer comprising a vinyl aromatic monomer unit and an unsaturated bond-containing a conjugated diene monomer unit; (C) an organic peroxide; and (D) a foaming agent; a mass ratio of the component (A) to the component (B), (NB), being from 97/3 to 50/50; and the component (B) comprising 5 mass % or more and 80 mass % or less of the vinyl aromatic monomer unit, and 5 mass % or more and 55 mass % or less of the conjugated diene monomer unit.