Abstract:
PURPOSE:To obtain a skin external preparation excellent in ultraviolet light- screening ability and transparency, developing no whitish spots, also feeling well when applied. CONSTITUTION:This skin external preparation contains flaky zinc oxide powder >=0.1mum but =3 in average lamella ratio, 0.005-1.0mol, based on 100mol of the zinc, of divalent or higher valent element(s) except the zinc integrated with said flaky zinc oxide powder, and powder >=70% in light transmittance at a wavelength of 500nm.
Abstract:
PURPOSE:To stably produce a hardly water-soluble salt suitable for extender pigment and having a uniform particle size by forming a hardly water-soluble salt by reacting an unreacted raw material with a new raw material in the supply line to a reactor and supplying the same as a seed crystal. CONSTITUTION:In a method for producing a hardly water soluble salt by continuously introducing two or more kinds of raw materials (a), (b) into a tubular reactor 6, the hardly water-soluble salt obtained by reacting the unreacted raw material contained in a mother liquor with a new raw material while the mother liquor is circulated is supplied to the reactor 6 as a seed crystal to uniformize the generation of a nucleus and the growth of a crystal. At this time, a bypass line allowing a raw material soln. containing the seed crystal to pass as it is and a filtrate line removing the seed crystal through a solid- liquid separator are provided and, by controlling the amt. of the soln. passed through both lines, the supply amt. of the seed crystal is suitably controlled. By this constitution, the hardly water-soluble salt crystal having a desired particle size is obtained.
Abstract:
PURPOSE:To obtain an external agent for skin having a high ultraviolet- protection activity, free from sticky feeling in use and excellent in a humectation activity by compounding silicon carbide alone or in combination with a water-soluble polyhydric alcohol. CONSTITUTION:Since powder of silicon carbide, which is useful as an abrasive material and a material for a chemical reaction vessel, has a high ultraviolet- protection activity and a low surface activity, it is excellent in the safety as a compounding component of an external agent for skin. Accordingly, an external agent for skin which is excellent in transparency and stability and has high ultraviolet-protection activity is obtained by using the silicon carbide powder. Further, since the silicon carbide powder has a high affinity with a water- soluble polyhydric alcohol, the use of the silicone carbide powder in combination with the water-soluble polyhydric alcohol imparts the external agent for skin a long acting humectation activity and excellent feeling in use free from a sticky feeling. The water-soluble polyhydric alcohol is e.g. ethylene glycol, glycerol, glucose or erythritol.
Abstract:
PROBLEM TO BE SOLVED: To provide a polishing liquid composition for semiconductor substrate having a large polishing speed ratio (polishing speed of silicon oxide film/polishing speed of silicon nitride film), and capable of ensuring a polishing speed of silicon oxide film required for securing high productivity while suppressing the polishing of silicon nitride film, and to provide a method of producing a semiconductor substrate using the polishing liquid composition for semiconductor substrate.SOLUTION: The polishing liquid composition for semiconductor substrate contains ceria particles, at least one kind of abrasive assistant out of a surfactant represented by R-O-(EO)-CHCOOM and a surfactant represented by R-O-(EO)-POM, and an aqueous medium. When the total mass of the ceria particles, abrasive assistant and the aqueous medium is 100 mass%, the content of the abrasive assistant is 0.20-1.2 mass%, and the polishing speed ratio is 20 or more.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing titanic acid nanosheets having a highly versatile moderate particle diameter and having excellent transparency, and a method for controlling the particle diameter of titanic acid nanosheets. SOLUTION: (1) The method for producing the titanic acid nanosheets includes a step of hydrothermally treating a titanic acid nanosheet dispersion undiluted solution obtained by hydrolyzing a titanium alkoxide and/or a titanium salt in the presence of amines and/or phosphoniums. There are also provided (2) the method for controlling the particle diameter of titanic acid nanosheets, (3) titanic acid nanosheets having an average particle diameter on a volume basis of 2-100 nm in a dispersion having a TiO 2 concentration of 1 mass%, and (4) a dispersion containing the titanic acid nanosheets. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition hardly causing discoloration by light exposure while maintaining a high refractive index even when a titanium-based compound is contained and to provide a method for producing the resin composition. SOLUTION: The resin composition comprises a titanium-containing compound obtained by the coexistence of one or more kinds of titanium sources selected from the group consisting of titanium alkoxides and titanium salts, a nitrogen-containing organic base and water and a resin. For further detail, the resin composition comprises the titanium-containing compound prepared by hydrolyzing the one or more kinds of titanium sources selected from the group consisting of the titanium alkoxides and titanium salts in the presence of the nitrogen-containing organic base and the resin. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a solid acid catalyst capable of producing in a simple process, having a higher activity, selectivity and affinity to organic substances in comparison to a conventional solid acid catalyst. SOLUTION: The solid acid catalyst containing laminar nano sheets of titanic acid having a proton and/or an organic cation is obtained by contacting and reacting a titanium alkoxide or titanium hydroxide with the organic cation in a solution. Preferably, the solid acid catalyst containing laminar nano sheets of titanic acid having a proton and/or an organic cation and a silicate is obtained by mixing and reacting a mixture of a titanium alkoxide and a silicon alkoxide or a mixture of titanium hydroxide and the silicate with the organic cation in a solution. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a detergent composition free of a characteristic smell, safe, simple to handle, and in addition, having an effect on soiling equivalent or superior to conventional technique even under feeble light sources, such as fluorescent lamp that is common lighting. SOLUTION: This detergent composition contains (a) a photocatalyst, (b) a compound containing a metal ion whose reduction potential is nobler than the conduction band potential of the photocatalyst, and capable of existing stably in a neutral region, and (c) at least one peroxide selected from the group consisting of peroxides that receive an electron to generate a radical in an aqueous solution and peroxides that generate hydrogen peroxide. A washing method using this detergent composition is also provided, wherein visible light is irradiated to produce the detergent action. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a detergent composition useful for a detergent that is odor-free, safe and easily handled and also is not less effective against dirt than prior arts even under a weak light source such as a fluorescent light generally used, particularly a bleaching detergent, a detergent for wet surroundings or a detergent against mold. SOLUTION: The detergent composition is characterized by comprising an oxidizing agent or a peroxide that can generate hydrogen peroxide, and a photocatalyst that contains titanium oxide. COPYRIGHT: (C)2004,JPO
Abstract:
PURPOSE: To provide the subject powder having transparency and high light- scattering property and, accordingly, useful as an additive for cosmetics, etc., effective for masking the wrinkles while preventing the white appearance. CONSTITUTION: This spherical inorganic powder has a refractive index of 1.5-2.0, a volume-average particle diameter of 0.1-4μm and a transmitted light scattering ratio of >=70% and a total transmittance of >=80%. The transmitted light scattering ratio and the total transmittance are defined by the formulas, Td/(Tp+ Td)}×100 and (Tp+Td), respectively, wherein Tp is a parallel light transmittance and Td is a scattered light transmittance measured by a haze meter on a thin film produced by uniformly dispersing a specimen in a dispersion medium having a refractive index of 1.4-1.5 at a concentration of 20wt.% and forming a thin film having a thickness of 15μm.