A thermoplastic elastomer composition including an acrylic block copolymer (I) and a hydrogenated block copolymer (II). The content of the acrylic block copolymer (I) is 70 to 300 parts by mass with respect to 100 parts by mass of the hydrogenated block copolymer (II); the hydrogenated block copolymer (II) is a hydrogenated product of a block copolymer (P) including a polymer block (A1) containing structural units derived from an aromatic vinyl compound, and a polymer block (B1) containing 1 to 100 mass % of structural units (b1) derived from farnesene and 99 to 0 mass % of structural units (b2) derived from a conjugated diene other than farnesene, the mass ratio [(A1)/(B1)] of the polymer block (A1) to the polymer block (B1) being 1/99 to 70/30; and the hydrogenation ratio of carbon-carbon double bonds in the polymer block (B1) is 50 to 100 mol %.

Embodiments of the present disclosure are directed to thermoplastic elastomer blends comprising at least one non-hydrogenated styrene isoprene block copolymer (SIS) having a Weight Average Molecular Weight (Mw) greater than or equal to 50,000 g/mol and a Tan Delta Peak Temperature greater than or equal to 15° C. and less than or equal to 25° C. at least one of: at least one hydrogenated SIS having an Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C.; and a styrene-ethylene/butylene-styrene block copolymer (SEBS) having a Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C.; and a tackifier having a softening point greater than or equal to 80° C.

Embodiments of the present disclosure are directed to thermoplastic elastomer blends comprising at least one non-hydrogenated styrene isoprene block copolymer (SIS) having a Weight Average Molecular Weight (Mw) greater than or equal to 50,000 g/mol and a Tan Delta Peak Temperature greater than or equal to 15° C. and less than or equal to 25° C. at least one of: at least one hydrogenated SIS having an Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C.; and a styrene-ethylene/butylene-styrene block copolymer (SEBS) having a Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C.; and a tackifier having a softening point greater than or equal to 80° C.

Transluminally implantable cardiac valves configured for use in cardiac valve replacement and/or cardiac valve exclusion that are capable of percutaneous delivery on low-profile catheters having 15 French size or less. The implantable cardiac valves are fabricated of from a unitary metal material to form a lattice frame support having a main body portion and valve leaflet portion, and a plurality of elongate biasing arm members. A polymer coating or covering is disposed on the valve leaflet portion and the elongate biasing arm members and subtends space between adjacent pairs of elongate biasing arm members to form valve leaflet portions in which the elongate biasing arms and the polymer coating operate to share a mechanical load thereupon.

Transluminally implantable cardiac valves configured for use in cardiac valve replacement and/or cardiac valve exclusion that are capable of percutaneous delivery on low-profile catheters having 15 French size or less. The implantable cardiac valves are fabricated of from a unitary metal material to form a lattice frame support having a main body portion and valve leaflet portion, and a plurality of elongate biasing arm members. A polymer coating or covering is disposed on the valve leaflet portion and the elongate biasing arm members and subtends space between adjacent pairs of elongate biasing arm members to form valve leaflet portions in which the elongate biasing arms and the polymer coating operate to share a mechanical load thereupon.

A molded product of a polypropylene-based resin composition, without containing an inorganic filler, and obtained by a polypropylene-based resin composition that does not contain an inorganic filler and includes: 60 to 90 parts by mass of a polypropylene-based resin (A) including 30 to 80 parts of a propylene-based polymer (a-1) having an MFR of 120 to 250 g/10 min and having 98 to 100 mol % of a propylene constituent unit, and 0 to 30 parts of a propylene/ethylene copolymer (a-2) having an intrinsic viscosity [η] of 4 to 7 dl/g and having 30 to 60 mol % of an ethylene constituent unit; 10 to 40 parts of an ethylene/α-olefin copolymer (B) having an MFR of 0.1 to 7 g/10 min and having an ethylene content of 65 to 90 mol %; 0.2 to 1 part of a fatty acid amide (C); and 0.1 to 1 part of a surfactant (D).

A molded product of a polypropylene-based resin composition, without containing an inorganic filler, and obtained by a polypropylene-based resin composition that does not contain an inorganic filler and includes: 60 to 90 parts by mass of a polypropylene-based resin (A) including 30 to 80 parts of a propylene-based polymer (a-1) having an MFR of 120 to 250 g/10 min and having 98 to 100 mol % of a propylene constituent unit, and 0 to 30 parts of a propylene/ethylene copolymer (a-2) having an intrinsic viscosity [η] of 4 to 7 dl/g and having 30 to 60 mol % of an ethylene constituent unit; 10 to 40 parts of an ethylene/α-olefin copolymer (B) having an MFR of 0.1 to 7 g/10 min and having an ethylene content of 65 to 90 mol %; 0.2 to 1 part of a fatty acid amide (C); and 0.1 to 1 part of a surfactant (D).

A thermoplastic elastomer compound includes polyolefin elastomer, high softening point tackifier, and, optionally, styrenic block copolymer. When styrenic block copolymer is present, the weight ratio of polyolefin elastomer to styrenic block copolymer is no less than about 1:1. The polyolefin elastomer has a POE Tan Delta Peak Temperature, the styrenic block copolymer has a SBC Tan Delta Peak Temperature, and the thermoplastic elastomer compound has a Compound Tan Delta Peak Temperature. The Compound Tan Delta Peak Temperature is greater than the POE Tan Delta Peak Temperature. When styrenic block copolymer is present, Compound Tan Delta Peak Temperature is also greater than the SBC Tan Delta Peak Temperature. The thermoplastic elastomer compound exhibits useful damping properties at or above room temperature and can be formed into plastic articles, including foamed plastic articles and/or crosslinked plastic articles, which can be useful for a variety of damping applications.

A thermoplastic elastomer compound includes polyolefin elastomer, high softening point tackifier, and, optionally, styrenic block copolymer. When styrenic block copolymer is present, the weight ratio of polyolefin elastomer to styrenic block copolymer is no less than about 1:1. The polyolefin elastomer has a POE Tan Delta Peak Temperature, the styrenic block copolymer has a SBC Tan Delta Peak Temperature, and the thermoplastic elastomer compound has a Compound Tan Delta Peak Temperature. The Compound Tan Delta Peak Temperature is greater than the POE Tan Delta Peak Temperature. When styrenic block copolymer is present, Compound Tan Delta Peak Temperature is also greater than the SBC Tan Delta Peak Temperature. The thermoplastic elastomer compound exhibits useful damping properties at or above room temperature and can be formed into plastic articles, including foamed plastic articles and/or crosslinked plastic articles, which can be useful for a variety of damping applications.

A soft polyolefin resin composition and an article molded therefrom are provided. The polyolefin resin includes: (A) 50 to 95% by weight of an ethylene-propylene block copolymer obtained by polymerization of a propylene homopolymer or an ethylene-propylene random copolymer with an ethylene-propylene rubber copolymer in stages in reactors; (B) 4.8 to 40% by weight of an ethylene-α-olefin rubber copolymer; and (C) 0.2 to 10% by weight of a copolymer of ethylene and a polar monomer, based on the total weight of components (A) to (C). The glass transition temperature of the rubber component in the ethylene-propylene block copolymer appears at −60 to −40° C. when measured by a dynamic mechanical analyzer, the melt index of the polyolefin resin composition measured at 230° C. under a load of 2.16 kg is 0.5 to 20 g/10 minutes, and the glass transition temperature of the rubber component in the polyolefin resin composition appears at −60 to −40° C. when measured by a dynamic mechanical analyzer.