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: 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: Zinc sulfide phosphor that has high energy efficiency and color purity and that emits blue light is provided. Specifically, a zinc sulfide phosphor adapted for use as a light source or in a display by being applied to powder EL elements is provided. The zinc sulfide blue phosphor comprises copper, silver or both elements and nickel, iron or both elements. The phosphor is obtained by adding a compound comprising copper, silver or both elements, a zinc compound, a sulfidizing agent and a compound comprising nickel, iron or both elements as an aqueous solution to an organic solvent to form a reaction mixture, heating the mixture and removing water from the reaction mixture by azeotropic dehydration of water and the organic solvent to obtain a zinc sulfide phosphor precursor, further sintering the zinc sulfide phosphor precursor.

Abstract: The present invention provides a sodium secondary battery. The sodium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution, the separator is composed of a porous laminate film in which a heat resistant porous layer and a porous film are stacked each other, and the heat resistant porous layer is disposed on the positive electrode side.

Abstract: The present invention provides an ultrafine barium sulfate particle, which improves, even if the particle is mixed in a water-borne composition, such as a water-borne coating composition or a water-borne ink composition, color saturation and gloss of color pigments, such as carbon black, or improve orientation of aluminum flakes or pearl pigments, which have been used in metallic coating compositions. The present invention also provides a water-borne coating composition and a water-borne ink composition, which contain the ultrafine barium sulfate particle. The present invention provides an ultrafine barium sulfate particle, comprising barium sulfate; and (1) a hydroxide and/or an oxide of at least one metallic element selected from the group consisting of Al, Si and Zr; and/or (2) a phosphate of at least one metallic element selected from the group consisting of Mg, Ca, Sr and Ba; the barium sulfate being coated with the hydroxide and/or oxide (1) and/or the phosphate (2).

Abstract: The present invention provides a sodium secondary battery. The sodium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution, the separator is composed of a porous laminate film in which a heat resistant porous layer and a porous film are stacked each other, and the heat resistant porous layer is disposed on the negative electrode side.

Abstract: A phosphor having a high brightness after being exposed to plasma and a phosphor paste containing the phosphor. The phosphor comprises a fluorescent substance A1 containing a compound represented by the following formula (I) and at least one activator selected from the group consisting of Eu and Mn, and a fluorescent substance B1 containing an aluminate; mM1O.nM2O.2M3O2??(I) [in the formula (I), M1 is at least two selected from the group consisting of Ca, Sr and Ba, or Ca alone or Ba alone; M2 is at least one selected from the group consisting of Mg and Zn; M3 is at least one selected from the group consisting of Si and Ge; 0.5?m?3.5; and 0.5?n?2.5].

Abstract: The present invention provides an ultrafine barium sulfate particle, which improves, even if the particle is mixed in a water-borne composition, such as a water-borne coating composition or a water-borne ink composition, color saturation and gloss of color pigments, such as carbon black, or improve orientation of aluminum flakes or pearl pigments, which have been used in metallic coating compositions. The present invention also provides a water-borne coating composition and a water-borne ink composition, which contain the ultrafine barium sulfate particle. The present invention provides an ultrafine barium sulfate particle, comprising barium sulfate; and (1) a hydroxide and/or an oxide of at least one metallic element selected from the group consisting of Al, Si and Zr; and/or (2) a phosphate of at least one metallic element selected from the group consisting of Mg, Ca, Sr and Ba; the barium sulfate being coated with the hydroxide and/or oxide (1) and/or the phosphate (2).

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: A phosphor and a vacuum ultraviolet excited light-emitting device are disclosed. The phosphor comprises a compound represented by the following formula (1) Ca1?a?bSraEubMgSi2O6??(1) wherein 0.1<a?0.35 and 0.003?b?0.02. The phosphor is excited by vacuum ultraviolet and emits blue light with high brightness. The vacuum ultraviolet excited light-emitting device comprises the above phosphor.

Abstract: Disclosed are a phosphor, a phosphor paste, and a light-emitting device. The phosphor comprises a compound represented by the formula (1): CaaSrbEu1-a-bMgSi2O6??(1) wherein 0.4?a?0.7, 0.4?b?0.7, and a+b?0.990. The phosphor paste comprises the above phosphor and an organic compound. The light-emitting device comprises the above phosphor and an electrode.

Abstract: A process for producing a vacuum ultraviolet ray-excited light-emitting phosphor comprising the steps of mixing a phosphor with a aluminum-based coupling agent, and calcining the mixture.

Abstract: A phosphor and a vacuum ultraviolet excited light-emitting device are disclosed. The phosphor comprises a compound represented by the following formula (1) Ca1?a?bSraEubMgSi2O6??(1) wherein 0.1<a?0.35 and 0.003?b?0.02. The phosphor is excited by vacuum ultraviolet and emits blue light with high brightness. The vacuum ultraviolet excited light-emitting device comprises the above phosphor.

Abstract: A phosphor having a high brightness after being exposed to plasma and a phosphor paste containing the phosphor. The phosphor comprises a fluorescent substance A1 containing a compound represented by the following formula (I) and at least one activator selected from the group consisting of Eu and Mn, and a fluorescent substance B1 containing an aluminate; mM1O.nM2O.2M3O2??(I) [in the formula (I), M1 is at least two selected from the group consisting of Ca, Sr and Ba, or Ca alone or Ba alone; M2 is at least one selected from the group consisting of Mg and Zn; M3 is at least one selected from the group consisting of Si and Ge; 0.5?m?3.5; and 0.5?n?2.5].

Abstract: A phosphor layer having a high luminance, and a vacuum ultra-violet radiation excited light emitting element are provided. A phosphor layer having a voidage of not less than 60 vol %, the phosphor layer in which a phosphor having a BET specific surface area of not less than 3 m2/g is used, and a vacuum ultra-violet radiation excited light emitting element are provided.

Abstract: The object of the present invention is to provide a process for producing particles of a metal compound having a spherical particle shape and an average particle diameter larger than 0.3 ?m without employing high-pressure conditions. This object is achieved by a process for producing particle of a metal compound comprising a step of adjusting pH of an aqueous solution containing urea and at least one metal element to from 4 to 8, a step of heating the aqueous solution under normal pressure, a step of separating a solid from the solution, and a step of drying the solid.

Abstract: The object of the present invention is to provide a production method for a silicate phosphor having high brightness. This object is achieved by the method for producing a silicate phosphor comprising a step of calcining a mixture of metal compounds, wherein one of the metal compounds is silicon oxide having BET specific surface area of not less than 10 m2/g.

Abstract: A fluorescent substance for vacuum ultraviolet radiation excited light-emitting devices which emits light with a high luminance and is subject to only a small decrease in luminance due to exposure to plasma or the like, and a vacuum ultraviolet radiation excited light-emitting device including the fluorescent substance are provided. The fluorescent substance is represented by the general formula: mM1O·nM2O·2M3O2, wherein M1 is at least one metal selected from the group consisting of Ca, Sr and Ba, M2 is at least one metal selected from the group consisting of Mg and Zn, M3 is at least one metal selected from the group consisting of Si and Ge, and m and n satisfy 0.5≦m≦3.5 and 0.5≦n≦2.5, respectively. Either Eu and Mn can be used as an activator.

Abstract: A method of preparing a rigid polyurethane foam having improved thermal conductivity, and a composition for such rigid polyurethane foam is provided. In the preparation a rigid polyurethane foam from a composition comprising an aromatic polyisocyanate, a polyol, a blowing agent, a catalyst, a surfactant and other aids, the blowing agent is a blend of cyclopentane and water, and the polyol contains a polyether polyol prepared by addition-polymerizing an alkylene oxide to o-toluenediamine as an initiator.

Abstract: It is desired to provide an aluminate phosphor having a high emission luminance, a method for producing the same, and a vacuum ultra-violet radiation excited light emitting element in which the aluminate phosphor is used. A method for producing an aluminate phosphor by mixing an &agr;-alumina powder, an aqueous solution containing a cation of a metal composing the aluminate phosphor, and a precipitant that precipitates the cation, and drying and calcining an obtained mixture of precipitates is provided. The foregoing method is further arranged so that the cation is a cation of at least one metal selected from the group consisting of Ba, Mg, Eu, Mn, Sr, Ca, Tb, Ce, and Zn is provided. An aluminate phosphor in which particles of the aluminate phosphor having a primary particle diameter of 0.05 &mgr;m to 30 &mgr;m account for not less than 80 percent by mass is provided by the foregoing method.