RDI Overview
| Type | Name | Sector | Description |
|---|---|---|---|
| patent | Zinc Oxide Photoelectrodes and Methods of Fabrication | Energy | A substrate-supported photoelectrode, which includes an essentially two-dimensional transparent conductive oxide (TCO) film supported by a substrate, wherein the film is doped with at least one element of Group III,... A substrate-supported photoelectrode, which includes an essentially two-dimensional transparent conductive oxide (TCO) film supported by a substrate, wherein the film is doped with at least one element of Group III, and one or more single crystal essentially one-dimensional nanostructures that are integral with the film and grown upwardly therefrom without a boundary layer therebetween, wherein the film and the nanostructures are essentially identical in composition and include zinc oxide or a zinc oxide alloy. Methods for preparing the substrate-supported photoelectrode and solar cells incorporating the substrate-supported photoelectrode are also provided. |
| patent | Zinc oxide-based fine particles, process for producing the same, and use thereof | Construction | A process for producing zinc oxide fine particles comprising heating a mixture comprising a zinc source, a carboxyl-containing compound, and an alcohol; a process for producing zinc oxide-polymer composite particles,... A process for producing zinc oxide fine particles comprising heating a mixture comprising a zinc source, a carboxyl-containing compound, and an alcohol; a process for producing zinc oxide-polymer composite particles, which comprises heating a mixture comprising a zinc source, a carboxyl-containing compound, a polymer, and an alcohol at a temperature of 100 DEG C or higher; a process for producing inorganic compound particles having on their surface a cluster of thin plate like zinc oxide crystals with their tip projecting outward, which comprises heating a mixture comprising a zinc source, a carboxyl-containing compound, lactic acid or a compound thereof, and an alcohol at a temperature of 100 DEG C or higher; a process for producing zinc oxide-based particles comprising heating a mixture comprising a zinc source, a carboxyl-containing compound, at least one element additive selected from the group consisting of the group IIIB metal elements and the group IVB metal elements, and an alcohol at a temperature of 100 DEG C or higher; zinc oxide-based fine particles obtained by these processes; and uses of the zinc oxide-based fine particles. |
| patent | ZIRCONIA CORE PARTICLES COATED WITH CERIA PARTICLES, PRODUCTION PROCESS THEREOF AND EXHAUST GAS PURIFYING CATALYST | Environment | |
| patent | ZIRCONIA CORE PARTICLES COATED WITH CERIA PARTICLES, PRODUCTION PROCESS THEREOF AND EXHAUST GAS PURIFYING CATALYST | Environment | The present invention provides a metal oxide particle for a catalyst support comprising multiple species of metal oxides and capable of satisfactorily exerting the properties of the respective metal oxides,... The present invention provides a metal oxide particle for a catalyst support comprising multiple species of metal oxides and capable of satisfactorily exerting the properties of the respective metal oxides, and also provide a production process therefor and an exhaust gas purifying catalyst obtained from this metal oxide particle. A metal oxide particle of the present invention comprises a core part 1 relatively rich in a first metal oxide and a surface layer 2 relatively rich in a second metal oxide, the core part and the surface layer each comprising a plurality of primary particles (1a, 2a), and the primary particle diameter of the second metal oxide being smaller than the primary particle diameter of the first metal oxide. |
| patent | ZIRCONIA SINTERED BODIES WITH HIGH TOTAL LIGHT TRANSMISSION AND HIGH STRENGTH, USES OF THE SAME, AND PROCESS FOR PRODUCING THE SAME | Health | The invention relates to the use of a sintered body obtained by subjecting a primary sintered body having a relative density of 95% or higher produced from a fine yttria-containing... The invention relates to the use of a sintered body obtained by subjecting a primary sintered body having a relative density of 95% or higher produced from a fine yttria-containing zirconia powder to HIP sintering at a temperature of 1,200-1,600° C. and a pressure of 50 MPa or higher. This sintered body is either a sintered body which has a total light transmittance, as measured at a thickness of 0.5 mm, of 43% or higher and a three-point bending strength of 1,700 MPa or higher or a zirconia sintered body which has a total light transmittance, as measured at a thickness of 1 mm, of 40% or higher and a three-point bending strength of 500 MPa or higher and which combines high strength and total light transmission. |
| patent | Zirconia sintered bodies with high total light transmission and high strength, uses of the same, and process for production thereof | Health | The present invention relates to a translucent yttria-containing zirconia sintered body and a dental material, an orthodontic bracket and an artificial tooth, comprising said sintered body, as well as a... The present invention relates to a translucent yttria-containing zirconia sintered body and a dental material, an orthodontic bracket and an artificial tooth, comprising said sintered body, as well as a mill blank for dental materials comprising said sintered body. |
| patent | ZIRCONIUM OXIDE DISPERSION AND MANUFACTURING METHOD THEREFOR | Construction | The invention provides a process for producing an aqueous dispersion of zirconium oxide comprising: reacting a zirconium salt with an alkali in water to obtain a slurry of particles of... The invention provides a process for producing an aqueous dispersion of zirconium oxide comprising: reacting a zirconium salt with an alkali in water to obtain a slurry of particles of zirconium oxide; filtering, washing, and repulping the slurry; adding an organic acid to the resulting slurry in an amount of one mole part or more per mole part of the zirconium in the slurry; hydrothermally treating the resulting mixture at a temperature of 170°C or higher; and washing the resulting aqueous dispersion of particles of zirconium oxide. The invention also provides a process for producing an aqueous dispersion of solid solution of zirconium oxide containing at least one stabilizing element selected from aluminum, magnesium, titanium, and rare earth elements. The invention further provides a process for producing a dispersion of zirconium oxide of which dispersion medium is an organic solvent, the process comprising replacing the dispersion medium of the aqueous dispersion of zirconium oxide obtained by the process mentioned above by the organic solvent. |
| patent | ZIRCONIUM OXIDE DISPERSION AND MANUFACTURING METHOD THEREFOR | Construction | Disclosed is a method for manufacturing an aqueous dispersion of zirconium oxide which has excellent transparency and for which fine zirconium oxide particles are uniformly dispersed in a dispersion medium,... Disclosed is a method for manufacturing an aqueous dispersion of zirconium oxide which has excellent transparency and for which fine zirconium oxide particles are uniformly dispersed in a dispersion medium, said method being characterized in that zirconium salt is reacted with an alkali in water to obtain a zirconium oxide particle slurry; next, this slurry is filtered, cleaned, and re-pulped, and at least one part by mole of an organic acid with respect to one part by mole of the zirconium in the slurry is added to the obtained slurry; and the obtained aqueous dispersion of zirconium oxide particles is cleaned after hydrothermal processing is performed at a temperature of 170°C or higher. Further disclosed is a method for manufacturing an aqueous dispersion of zirconium oxide which is a solid solution containing at least one type of stabilizing element selected from aluminum, magnesium, titanium, and rare earth elements. |
| patent | ZIRCONIUM OXIDE DISPERSION AND METHOD FOR PRODUCING THE SAME | Construction | PROBLEM TO BE SOLVED: To provide a method for producing a zirconium oxide dispersion wherein fine zirconium oxide is uniformly dispersed in a dispersion medium, and the zirconium oxide dispersion... PROBLEM TO BE SOLVED: To provide a method for producing a zirconium oxide dispersion wherein fine zirconium oxide is uniformly dispersed in a dispersion medium, and the zirconium oxide dispersion obtained thereby. SOLUTION: A water dispersion of zirconium oxide wherein fine zirconium oxide is uniformly dispersed in water can be obtained by: reacting a zirconium salt with an alkali in water so as to obtain a slurry of zirconium oxide particles; subsequently filtering, washing and re-pulping the slurry; adding ≥1 pts.mol organic acid to the obtained slurry per 1 pt.mol zirconium in the slurry; carrying out a hydrothermal treatment at ≥170°C; and washing the obtained water dispersion of zirconium oxide particles. A zirconium oxide dispersion using an organic solvent as the dispersion medium can be obtained by using the organic solvent as the dispersion medium instead of water in the water dispersion of zirconium oxide. COPYRIGHT: (C)2010,JPO&INPIT |
| patent | ZIRCONIUM OXIDE DISPERSION, METHOD FOR PRODUCING THE SAME AND RESIN COMPOSITION CONTAINING THE SAME | Construction | PROBLEM TO BE SOLVED: To provide a zirconium oxide dispersion having a low viscosity even at a high concentration and a high transparency, and a method for producing the same.... PROBLEM TO BE SOLVED: To provide a zirconium oxide dispersion having a low viscosity even at a high concentration and a high transparency, and a method for producing the same. SOLUTION: According to the invention, a zirconium oxide dispersion with a zirconium oxide particle content of 20 wt.% or more which has a permeability at a wavelength of 400 nm of 35% or more, a permeability at a wavelength of 800 nm of 95% or more and a viscosity at 25°C of 20 mPa s or less is provided. Such a zirconium oxide water dispersion having a high transparency, a low viscosity and a zirconium oxide particle content of 20 wt.% or more as this is obtained by reacting a zirconium salt with an alkali in water to obtain a slurry of zirconium oxide particles, then filtering the slurry, washing and repulping, and adding into the obtained slurry an organic acid of 1 molar part or more to zirconium of 1 molar part in the slurry, hydrothermally treating at 170°C or above to obtain a zirconium oxide particle water dispersion, and then washing and condensing this. By replacing water which is a dispersion medium by an organic solvent, similarly, a zirconium oxide dispersion having a zirconium oxide particle content of 20 wt.% or more, a high transparency and a low viscosity is obtained, in which the organic solvent is a dispersion medium. COPYRIGHT: (C)2010,JPO&INPIT |