Abstract: Provided is a biodegradable foam composition that uses biodegradable materials instead of some rubber components to achieve high biodegradation efficiency. The biodegradable foam composition includes a polyalkylene adipate terephthalate (PAAT) resin, a peroxide crosslinking agent, a polymer capable of being crosslinked by the peroxide crosslinking agent, and a foaming agent.

Abstract: Provided is a rubber composition for a shoe sole. The rubber composition includes: an elastic polymer including a styrene butadiene rubber (SBR) and a styrene butadiene styrene (SBS) thermoplastic rubber; and a crosslinking agent. The total styrene content of the elastic polymer is at least 35% by weight.

Abstract: Provided is a method for producing a low specific gravity molded foam using a propylene-based polymer. The method includes: providing a foamable composition including a mixture of a propylene-based polymer and thermally expandable microspheres; introducing the foamable composition into a mold for producing a molded foam; raising the temperature of the foamable composition to at least the expansion start temperature (Tstart) of the thermally expandable microspheres to expand the foamable composition in the mold; forming a molded foam in a state in which the foamable composition is expanded to fill the mold; and releasing the molded foam from the mold.

Abstract: Provided is a composition for a low specific gravity molded foam. The composition includes at least one polymer component selected from the group consisting of a peroxide-crosslinkable thermoplastic resin, a peroxide-crosslinkable rubber and a peroxide-crosslinkable thermoplastic elastomer, thermally expandable microspheres, and an organic peroxide crosslinking agent.

Abstract: Provided is a rubber composition for a shoe sole. The rubber composition includes: an elastic polymer including a styrene butadiene rubber (SBR) and a styrene butadiene styrene (SBS) thermoplastic rubber; and a crosslinking agent. The total styrene content of the elastic polymer is at least 35% by weight.

Abstract: Provided is a rubber composition for injection molding. The rubber composition includes a rubber component selected from a natural rubber or a synthetic rubber and an ethylene oligomer. The ethylene oligomer is an ethylene homo-oligomer or an ethylene co-oligomer. The ethylene oligomer has a melting point of 130° C. or less, as determined by differential scanning calorimetry (DSC), and a weight average molecular weight of 40,000 or less, a number average molecular weight of 15,000 or less or a viscosity average molecular weight of 15,000 or less.

Abstract: Provided is an elastic infill for artificial turf. The elastic infill is produced by pelletization of an elastomer composition comprising a silane coupling agent and a mixture of an olefin copolymer-containing base resin and an inorganic filler. The silane coupling agent is present in admixture with the mixture. Alternatively, the silane coupling agent may be grafted onto the olefin copolymer to allow cross-linking of the olefin copolymer in the presence of water.

Abstract: Provided is a rubber composition for injection molding. The rubber composition includes a rubber component selected from a natural rubber or a synthetic rubber and an ethylene oligomer. The ethylene oligomer is an ethylene homo-oligomer or an ethylene co-oligomer. The ethylene oligomer has a melting point of 130° C. or less, as determined by differential scanning calorimetry (DSC), and a weight average molecular weight of 40,000 or less, a number average molecular weight of 15,000 or less or a viscosity average molecular weight of 15,000 or less.

Abstract: The present invention relates to an apparatus for producing a desired three-dimensional molded article. In the apparatus of the present invention, molding material particles are melted and the discharge position of the molten molding material particles is controlled. The apparatus of the present invention includes an extrusion unit for three-dimensional molding where the molding material particles are melted and discharged through a nozzle, a storage container where the molding material particles to be supplied to the extrusion unit are temporarily stored, a transfer pipe as a passage through which the molding material particles stored in the storage container are transferred to the extrusion unit, and a control unit for controlling the position of the extrusion unit. The transfer pipe consists of a plurality of connected unit transfer pipes.

Abstract: Provided is a method for manufacturing a concrete pump cleaning foam. The method comprises: providing a mixture of a polymer containing an olefin block copolymer (OBC) having a DSC melting point of 100° C. or higher and a natural or synthetic rubber, a liquid softening agent, and one or more additives selected from the group consisting of a crosslinking agent, a foaming agent, a metal oxide, stearic acid, an antioxidant, zinc stearate, titanium dioxide, a crosslinking coagent, and a pigment; placing the mixture in a mold and pressurizing the mixture at elevated temperature to form a polymer foam; and after the foaming, polishing the surface of the polymer foam to separate closed cells into a surface.

Abstract: Provided is an elastic infill for artificial turf. The elastic infill is produced by pelletization of an elastomer composition comprising a silane coupling agent and a mixture of an olefin copolymer-containing base resin and an inorganic filler. The silane coupling agent is present in admixture with the mixture. Alternatively, the silane coupling agent may be grafted onto the olefin copolymer to allow cross-linking of the olefin copolymer in the presence of water.

Abstract: Provided is a powder slush molding composition including a thermoplastic polyester elastomer (TPEE) having a peak melting point of 130 to 200° C., as measured by differential scanning calorimetry (DSC). The composition has a Shore A hardness not higher than 95 and a melt index (190° C., 2.16 kg) of 10 to 100 g/10 min.

Abstract: Provided is a polymer composition for a three-dimensional printer. The polymer composition includes a polymer matrix containing an olefin block copolymer. The olefin block copolymer has a peak melting point of 100 to 150° C., as measured by differential scanning calorimetry (DSC), and a Shore A hardness not higher than 95. The polymer matrix has a melt index (190° C., 2.16 kg) of 1 to 30 g/10 min.

Abstract: The present invention provides safety shoes with a built-in toe cap, wherein a foam shoe in which the outsole and the upper are integrated by foaming a synthetic resin is formed, and a toe cap is inserted into a toe cap groove before the foam shoe is cooled by forming the toe cap groove at the outsole and the upper at the front inner part of the foam shoe. In the toe cap, a support border, comprising a metal material, making contact with the bottom, is formed at the lower end of a cover portion making contact with the upper, and a reinforcing piece crossing the bottom is formed at the support border by welding; or a ground plate, comprising an engineering plastic, which is in contact with the bottom, is formed at the lower end of a cover portion making contact with the upper.

Abstract: A composition for a refrigerator gasket is provided. The composition includes, as a polymer base, a blend of an olefin/?-olefin (OAO) copolymer having a melting point of at least 100° C. and a styrene block copolymer (SBC). The polymer base has a melt index (190° C., 5 kg) of 0.01 to 15 g/10 min.

Abstract: Disclosed is a sponge composition for a shoe sole. The sponge composition includes an ethylene copolymer as a matrix, a crosslinking agent, a foaming agent, and a polyvinyl acetate as an adhesion improver. The sponge includes 100 parts by weight of a matrix including an ethylene copolymer, 0.02 to 1.5 parts by weight of a crosslinking agent, 1 to 6 parts by weight of a foaming agent, and 2 to 40 parts by weight of a polyvinyl acetate.

Abstract: The present invention relates to a bicycle tire. More particularly, the bicycle tire is formed by foaming synthetic resin materials and is mounted to a rim of a bicycle, wherein the tire is prevented from being unexpectedly separated from the rim in use. That is, the bicycle tire formed by injection-foam molding is characterized in that: a rim coupling portion of the bicycle tire is formed with a plurality of coupling holes at predetermined intervals; and stoppers formed of synthetic resin materials are fixed in the coupling holes, stopped by annular holding protrusions when the tire is mounted to the bicycle rim, and formed of arch surfaces, horizontal surfaces and tilted both end surfaces so that the tilted both end surfaces are protruded when the stoppers are fixed to the coupling holes.