Abstract: Disclosed are a method of producing fine particulate alkali metal niobate in a liquid phase system, wherein the size and shape of the particulate alkali metal niobate can be controlled; and fine particulate alkali metal niobate having a controlled shape and size. One of specifically disclosed is a method of producing a substantially rectangular cuboid particulate alkali metal niobate represented by MNbO3 (1), wherein M represents one element selected from alkaline metals, including specific four steps. Another one of specifically disclosed is particulate alkali metal niobate represented by the formula (1) having a substantially rectangular cuboid shape, wherein the substantially rectangular cuboid shape has a longest side and a shortest side, the length of the longest side represented by an index Lmax is 0.10 to 25 ?m, and the length of the shortest side represented by an index Lmin is 0.050 to 15 ?m.

Abstract: The present invention has an object to provide a method for producing particulate barium carbonate having desired properties such as high purity, fineness, and has a spherical shape. The present invention relates to a method of producing substantially spherical barium carbonate, including (A) mixing, in an aqueous medium, a barium compound with at least one first ingredient selected from the group consisting of gluconic acid or salts thereof, gluconolactone, glucoheptonic acid or salts thereof, and glucoheptonolactone, to prepare a mixture; and (B) reacting the barium compound with carbon dioxide or a water-soluble carbonate in the mixture, to produce substantially spherical barium carbonate.

Abstract: The invention provides a surface-modified titanium dioxide particle inhibited in photocatalytic activity and reduced in amount of volatile water. The surface-modified titanium dioxide particle has on the surface a crystalline composite compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium complexed with titanium dioxide in an amount of 0.1-20% by weight based on the weight of the surface-modified titanium dioxide particle in terms of oxide of the alkaline earth metal. The surface-modified titanium dioxide particle is produced by heating a compound of an alkaline earth metal and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with titanium dioxide to form a crystalline composite compound on the surface of the titanium dioxide particle in an amount of 0.1-20% by weight based on the weight of the surface-modified titanium dioxide particle in terms of oxide of the alkaline earth metal.

Abstract: The object of the present disclosure is to obtain zinc oxide particle having large particle diameter and being high-density and to obtain an exoergic resin composition, an exoergic grease and an exoergic coating composition than show an excellent exoergic property by using it. A zinc oxide particle being high-density, which has density of 4.0 g/cm3 or more and median size (D50) of 17 to 10000 ?m.

Abstract: The present invention has an object to provide a high concentration dispersion of zinc oxide or titanium dioxide which is free of volatile silicones, as well as a cosmetic composition which gives little sticky feel after spreading on the skin. The present invention relates to a dispersion which contains: zinc oxide or titanium dioxide; an isoparaffin having the average polymerization degree of 3 to 10; and a polyether-modified silicone having an HLB value of 2 to 5, as a dispersant; the amount of the zinc oxide or titanium dioxide being not less than 60% by mass of the whole amount of the dispersion.

Abstract: The object of the present disclosure is to obtain zinc oxide particle having large particle diameter and being high-density and to obtain an exoergic resin composition, an exoergic grease and an exoergic coating composition that show an excellent exoergic property by using it. A zinc oxide particle being high-density, which has density of 4.0 g/cm3 or more and median size (D50) of 17 to 10000 ?m.

Abstract: The object of the present disclosure is to obtain zinc oxide particle having large particle diameter and being high-density and to obtain an exoergic resin composition, an exoergic grease and an exoergic coating composition that show an excellent exoergic property by using it. A zinc oxide particle being high-density, which has density of 4.0 g/cm3 or more and median size (D50) of 17 to 10000 ?m.

Abstract: The present disclosure provides a magnesium oxide particle that can be used more suitably than common magnesium oxide in the application such as an exoergic filler and the like. A magnesium oxide particle having (median size)/(specific surface diameter obtained from specific surface area) ratio of 3 or less and D90/1)10 of 4 or less is provided.

Abstract: The present disclosure provides an exoergic filler composition which is able to exert superior exoergic property, and a resin composition, a grease, and a coating composition which having superior exoergic property, respectively, by using the above-mentioned exoergic filler composition. The exoergic filler composition contains 1 to 50 volume % of a needle-shaped zinc oxide having an average long diameter of 0.1 to 10 ?m, an average short diameter of 0.025 to 2.5 ?m, aspect ratio defined by (average long diameter)/(average short diameter) of 4 or more and specific surface area according to BET method of 50 m2/g or less, and 50 to 99 volume % of other exoergic filler.

Abstract: The invention provides a surface-modified titanium dioxide particle inhibited in photocatalytic activity and reduced in amount of volatile water. The surface-modified titanium dioxide particle has on the surface a crystalline composite compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium complexed with titanium dioxide in an amount of 0.1-20% by weight based on the weight of the surface-modified titanium dioxide particle in terms of oxide of the alkaline earth metal. The surface-modified titanium dioxide particle is produced by heating a compound of an alkaline earth metal and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with titanium dioxide to form a crystalline composite compound on the surface of the titanium dioxide particle in an amount of 0.1-20% by weight based on the weight of the surface-modified titanium dioxide particle in terms of oxide of the alkaline earth metal.

Abstract: The invention provides a titanium dioxide pigment particle inhibited in photocatalytic activity and reduced in amount of volatile water which has on the surface a composite compound of alkaline earth meta complexed with the titanium dioxide in an amount of 0.1-20% by weight based on the weight of the titanium dioxide pigment particle in terms of oxide of the alkaline earth metal, wherein the composite compound is obtained by heating a compound of at least one of alkaline earth metals selected from magnesium, calcium, barium and strontium and a titanium dioxide particle at a temperature of 60° C. or higher so that the alkaline earth metal is complexed with the titanium dioxide on the surface of the titanium dioxide pigment particle.

Abstract: A titanium oxide photocatalyst that is capable of improving a decomposition rate, and a method for producing the same are provided. The titanium oxide photocatalyst of the present invention is a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.

Abstract: The present disclosure provides a zinc oxide particle that can be used more suitably than common zinc oxide in the application such as an exoergic filler and the like, and can be used in the other applications. A zinc oxide particle having a median size of 1 to 30 ?m and D90/D10 of 4 or less is provided.

Abstract: The present invention has an object to provide a flaky particulate material giving skin an excellent smoothness, which is free from whitening problem upon use thereof owing to its high transparency. The present invention also has another object to provide a cosmetic composition containing the flaky particulate material. The present invention relates to flaky particulate material, which has an average coefficient of friction is not more than 0.50, and a total light transmittance is not less than 85%. A particle in the flaky particulate material comprises a substrate particle made of one material selected from the group consisting of mica, a synthetic mica, sericite, talc, barium sulfate and aluminum oxide. The present invention provides a flaky particulate material that gives skin excellent smoothness, a natural tone, and a matt appearance. The flaky particulate material of the present invention gives a cosmetic composition which provides great comfort of use, and an excellent appearance.

Abstract: An object of the invention is to provide an iodide single crystal material that provides a scintillator material for the next-generation TOF-PET, and a production process for high-quality iodide single crystal materials. The iodide single crystal material of the invention having the same crystal structure as LuI3 and activated by a luminescence center RE where RE is at least one element selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb is characterized in that a part or the whole of lutetium (Lu) in said iodide single crystal material is substituted by Y and/or Gd.

Abstract: It is an object of the present invention to provide hydrotalcite which can inhibit a white discoloration by water of a polyolefin film for agricultural uses, a blooming to the surface of a vinyl chloride resin film, a reduction in electric resistance in the case of using the hydrotalcite as a stabilizer of a vinyl chloride resin for covering wires, the occurrence of die drool in the case of using the hydrotalcite as a neutralizer of an acid catalyst residue in a polyolefin resin or a copolymer thereof, and coloring (yellowing) in extrusion in preparing pellets and can be suitably used as a resin additive, a method of producing the same and a synthetic resin composition containing the same. Hydrotalcite expressed by the following formula (1); [(Mg)x(Zn)y]1?z(Al)z(OH)2(An?)z/n.mH2O ??(1) in the formula An? represents an anion having a valence of n, and x, y, z and m are values which satisfy the following expressions, 0.5?x?1, 0?y?0.5, x+y=1, 0.1?z?0.

Abstract: The invention provides a process for production of a composition comprising a perovskite structure compound, the process comprising: a first process to heat a hydrous oxide of at least one B group element selected from the group consisting of Ti, Zr, Hf, and Sn at a temperature within a range of 80 to 300° C. in the presence of an aqueous medium so as to dehydrate the hydrous oxide; and a second process to heat a reaction product obtained in the first process and a hydroxide of at least one A group element selected from the group consisting of Ba, Sr, Ca, Mg and Pb at a temperature within a range of 100 to 300° C. in the presence of an aqueous medium. The process provides a composition comprising an ABO3 compound in the form of uniform and fine spherical particles which have an average particle diameter of 1 ?m or less, preferably within a range of 0.01 to 0.5 ?m, high crystallinity, and a controlled A/B ratio as desired, as well as few internal pores in the crystalline particles.

Abstract: The invention provides a process for production of powder of perovskite compound which comprises: the first step for obtaining an aggregate of perovskite compound which comprises at least one A group element selected from the group consisting of Mg, Ca, Sr, Ba and Pb and at least one B group element selected from the group consisting of Ti, Zr, Hf and Sn, and which is represented by the general formula ABO3 wherein A is at least one A group element and B is at least one B group element; and the second step for heating the aggregate of perovskite compound obtained in the first step in a solvent at a temperature in a range from 30° C. to 500° C. whereby disintegrating the aggregate.

Abstract: An ion wind generator is provided at the back of a light source. The ion wind generator negatively ionizes air by corona discharges using negative-side needle electrodes and draws the negatively-ionized air to a ground-side mesh electrode to allow an airflow to be occurred. A photocatalyst filter is provided at the back of the ion wind generator. Even if ozone (O3) is generated and a lower fatty acid is composed by the ozone and alcohol remained in a casing, the lower fatty acid is decomposed into alcohol and oxygen by the photocatalyst filter.

Abstract: The invention provides a zinc oxide particle having suppressed surface activity which gives safe and effective UV ray shielding ability (especially at longer wavelengths) to a variety of products such as resin molds, coating compositions or cosmetics, and a process for the production of the same. The zinc oxide particle of the invention has on the surface a cover layer formed of zinc silicate in an amount of 0.5-50% by weight in terms of zinc silicate (Zn2SiO4) relative to the zinc oxide. The zinc oxide particle which contains solid solution iron or cobalt therein as well as a cover layer formed of zinc silicate has effective UV ray shielding ability at much longer wavelengths while it is suppressed in the surface activity.