Abstract: The purpose of the present invention is to provide a plasma spray material which is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates. When used as a plasma spray material, hydroxyapatite powder having a modal diameter of 550-1000 nm in a pore diameter of at most 5000 nm as measured by a mercury intrusion method is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates.

Abstract: The present invention addresses the problem of providing a plasma spraying material with which it is possible to form an HAp film that has high hardness and is not susceptible to abrasion, even under conditions involving plasma spraying with low flame energy. In the present invention, an HAp powder having an average particle diameter (D50) of 15-40 ?m and a pore volume of 0.01-0.30 cc/g at a pore diameter of 2000 nm or less as measured through mercury intrusion makes it possible to form an HAp film that has high hardness, is not susceptible to abrasion, and can be subjected to plasma spraying, even under conditions involving plasma spraying with low flame energy.

Abstract: An object of the present invention is to provide a calcium phosphate powder that enables the preparation of a slurry for additive manufacturing with excellent dispersion stability, and enables the production of a three-dimensional additive manufacturing article with high strength, in additive manufacturing. Provided is a calcium phosphate powder, having an average particle size (D50) of 0.1 to 5.0 ?m, and having a pore volume of mesopores (pore size: 2 to 50 nm) of 0.01 to 0.06 cc/g as measured by a gas adsorption method. The calcium phosphate powder has excellent dispersion stability in a slurry for additive manufacturing, and, by performing additive manufacturing using a slurry for additive manufacturing containing the calcium phosphate, it is possible to produce a three-dimensional additive manufacturing article with high strength, which is useful as an implant, such as an artificial bone.

Abstract: As a sintered body for a radiation shielding material, which can effectively shield mainly low-energy-level neutrons, that is, thermal neutrons and lower, slow neutrons, and has excellent physical properties such as bending strength and Vickers hardness, leading to high machining strength, a sintered body for a radiation shielding material comprising LiF ranging between 99 wt. % to 5 wt. %, and one or more fluorides selected from among MgF2, CaF2, AlF3, KF, NaF, and/or YF3 ranging between 1 wt. % to 95 wt. %, having physical properties of a relative density of 92% or more, a bending strength of 50 MPa or more, and a Vickers hardness of 100 or more, is provided.

Abstract: The purpose of the present invention is to provide a plasma spray material which is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates. When used as a plasma spray material, hydroxyapatite powder having a modal diameter of 550-1000 nm in a pore diameter of at most 5000 nm as measured by a mercury intrusion method is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates.

Abstract: Provided is a powder containing ferric pyrophosphate that affords high iron absorbability, as a main component of an oral iron preparation. The present invention relates to a composite powder containing ferric pyrophosphate, which is a powder containing ferric pyrophosphate and a sodium component, wherein (1) the content of ferric pyrophosphate is 95 wt % or higher, and (2) a (Fe+Na)/P molar ratio is 0.8 to 1.0.

Abstract: Provided is a powder containing ferric pyrophosphate that affords high iron absorbability, as a main component of an oral iron preparation. The present invention relates to a composite powder containing ferric pyrophosphate, which is a powder containing ferric pyrophosphate and a sodium component, wherein (1) the content of ferric pyrophosphate is 95 wt % or higher, and (2) a (Fe+Na)/P molar ratio is 0.8 to 1.0.

Abstract: A P2O5—BaO—ZnO—Nb2O5 type optical glass contains 25-50 wt. % P2O5, 15-35 wt. % BaO, 1-25 wt. ZnO, and 3-10 wt. % Nb2O5. The optical glass has a high refractive index (particularly preferably the refractive index nd of 1.6 or more), low dispersion (an Abbe number ?d of 42 or more), a low deformation point, and improved resistance to devitrification upon molding, and is suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure.

Abstract: An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO2, 30.5-50.0 wt. % B2O3, 1.1-8.0 wt. % Li2O, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % Y2O3, and 10.0-19.5 wt. % La2O3.

Abstract: A linear polyimide is produced from mellophanic dianhydride, diamine (NH2-A-NH2), and a monofunctional acid anhydride and contains a repeating unit represented by the following general formula (3): wherein A represents a divalent aromatic diamine residue or aliphatic diamine residue, B represents a monofunctional acid anhydride residue, and n represents a degree of polymerization.

Abstract: An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO2, 30.5-50.0 wt. % B2O3, 1.1-8.0 wt. % Li2O, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % Y2O3, and 10.0-19.5 wt. % La2O3.

Abstract: A P2O5—BaO—ZnO—Nb2O5 type optical glass contains 25-50 wt. % P2O5, 15-35 wt. % BaO, 1-25 wt. ZnO, and 3-10 wt. % Nb2O5. The optical glass has a high refractive index (particularly preferably the refractive index nd of 1.6 or more), low dispersion (an Abbe number ?d of 42 or more), a low deformation point, and improved resistance to devitrification upon molding, and is suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure.

Abstract: Disclosed is a linear polyimide precursor having an intrinsic viscosity of not less than 0.5 dL/g and composed of a repeating unit represented by at least one formula selected from the group consisting of the general formula (1) below and the general formula (2) below. In the general formulae (1) and (2), X represents a divalent aromatic group other than a residue of 1,4-bis(4-aminophenoxy)benzene and a residue of bis(4-amino-3-methylphenyl)methane or an aliphatic group. Since this linear polyimide precursor has high glass transition temperature and high toughness, while exhibiting excellent solubility and thermoplasticity, it is suitably used as a raw material for an asymmetric polyimide which is useful as an adhesive resin for flexible printed circuits (FPC) or the like.

Abstract: A method for preparation of 1,2,3,4-benzenetetracarboxylic acid includes oxidizing 1,2,3,4,5,6,7,8-octahydrophenanthrene with potassium permanganate.

Abstract: A method for producing a polymerized hydrocarbon includes a step of a dehalogenation of a halogenated hydrocarbon with a magnesium-diene complex. Low-molecular-weight compounds, such as dimers or trimers of hydrocarbon units, oligomers of hydrocarbon units, or polymers of hydrocarbon units can be produced by this method while generating significantly less odor.

Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.

Abstract: A process is provided for the production of 2,7-dibromofluorenone. According to the process, a 2,7-dibromofluorene-contianing raw material is oxidized with molecular oxygen in the presence of a phase transfer catalyst such as a quaternary ammonium salt in a heterogeneous, mixed solvent of an aqueous solution of a caustic alkali and a water-insoluble organic solvent. Crude crystals of 2,7-dibromofluorenone, which have been obtained by the oxidization, can be purified by recrystallization to recover 2,7-dibromofluorenone as crystals having a purity of at least 99 wt. %.

Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.

Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.

Abstract: A method for producing a polymerized hydrocarbon includes a step of a dehalogenation of a halogenated hydrocarbon with a magnesium-diene complex. Low-molecular-weight compounds, such as dimers or trimers of hydrocarbon units, oligomers of hydrocarbon units, or polymers of hydrocarbon units can be produced by this method while generating significantly less odor.