Abstract: An electrochemical reaction device in an embodiment includes: an electrochemical reaction cell including a first accommodation part for accommodating carbon dioxide, a second accommodation part for accommodating an electrolytic solution containing water, or water vapor, a diaphragm provided between the first accommodation part and the second accommodation part, a reduction electrode arranged in the first accommodation part, and an oxidation electrode arranged in the second accommodation part, a detection unit detecting a reaction amount in the electrochemical reaction cell; a regulation unit regulating an amount of the carbon dioxide to be supplied to the first accommodation part, and a control unit controlling the regulation unit based on a detection signal of the detection unit.

Abstract: An electrochemical reaction device in an embodiment includes: a reaction unit including a first accommodation part to accommodate carbon dioxide and a second accommodation part to accommodate an electrolytic solution containing water; a reduction electrode to reduce the carbon dioxide; an oxidation electrode to oxidize the water; a power supply to pass current between the reduction electrode and the oxidation electrode; a pressure regulator to regulate a pressure in the first accommodation part; a reaction product detector to detect at least one of an amount and a kind of a substance produced at the reduction electrode; and a controller to control the pressure regulator based on a detection signal of the reaction product detector.

Abstract: Provided is a sealing material having abrasion resistance usable for even construction machinery operated under severe conditions while keeping mechanical strength thereof. The sealing material includes a fluorinated resin composition containing the following materials (1) and (2), and further containing the following material (3) or (4). The materials are: (1) fluorinated resin, (2) bronze, (3) tricobalt tetraoxide, (4) a composite metal oxide containing cobalt and aluminum, and further containing at least one of metals selected from the group of chromium, titanium, magnesium, calcium, and lithium. Preferably, the fluorinated resin is polytetrafluoroethylene. Further, the sealing material is usable for construction machinery.

Abstract: Provided are a polyurethane elastomer composition excellent in the abrasion resistance and swelling resistance, and a bearing material formed of the polyurethane elastomer composition. The polyurethane elastomer composition contains a polyurethane elastomer of 100 parts by mass, polyethylene wax of 3˜25 parts by mass, and paraffin wax of 1˜10 parts by mass. Further, preferably the polyurethane elastomer composition contains a cobalt based compound of 0.1˜10 parts by mass.

Abstract: Provided is a sealing material having abrasion resistance usable for even construction machinery operated under severe conditions while keeping mechanical strength thereof. The sealing material includes a fluorinated resin composition containing the following materials (1) and (2), and further containing the following material (3) or (4). The materials are: (1) fluorinated resin, (2) bronze, (3) tricobalt tetraoxide, (4) a composite metal oxide containing cobalt and aluminum, and further containing at least one of metals selected from the group of chromium, titanium, magnesium, calcium, and lithium. Preferably, the fluorinated resin is polytetrafluoroethylene. Further, the sealing material is usable for construction machinery.

Abstract: Provided are a polyurethane elastomer composition excellent in the abrasion resistance and swelling resistance, and a bearing material formed of the polyurethane elastomer composition. The polyurethane elastomer composition contains a polyurethane elastomer of 100 parts by mass, polyethylene wax of 3˜25 parts by mass, and paraffin wax of 1˜10 parts by mass. Further, preferably the polyurethane elastomer composition contains a cobalt based compound of 0.1˜10 parts by mass.

Abstract: A PHA copolymer comprising (R)-3-hydroxy-4-methyl valeric acid units and a production method thereof are provided. A polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units; and a method of producing a polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units, wherein in the presence of a carbon source and a precursor of (R)-3-hydroxy-4-methyl valeric acid, a transformant in which the gene of polyhydroxyalkanoic acid-polymerizing enzyme has been introduced in a microorganism selected from Escherichia coli, Ralstoniau sp., and Pseudomonas sp. is cultured, and from the culture obtained a polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units is collected.

Abstract: A PHA copolymer comprising (R)-3-hydroxy-4-methyl valeric acid units and a production method thereof are provided. A polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units; and a method of producing a polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units, wherein in the presence of a carbon source and a precursor of (R)-3-hydroxy-4-methyl valeric acid, a transformant in which the gene of polyhydroxyalkanoic acid-polymerizing enzyme has been introduced in a microorganism selected from Escherichia coli, Ralstoniau sp., and Pseudomonas sp. is cultured, and from the culture obtained a polyhydroxyalkanoic acid copolymer comprising at least (R)-3-hydroxy-4-methyl valeric acid units is collected.