Class 423/336 - By hydrolyzing vapor phase silicon compound

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Processes which include the step of hydrolyzing a silicon
No. of patents: 115
Last issue date: 02/01/2011

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Number	Title	Issue Date
7879304	Monodisperse mesoporous silica microspheres formed by evaporation-induced self-assembly of surfactant templates in aerosoles The present invention provides for evaporation induced self-assembly (EISA) within microdroplets produced by a vibrating orifice aerosol generator (VOAG) for the production of monodisperse mesoporous silica particles. The process of the present invention exploits th...	02/01/2011
7803342	Process for recycling high-boiling compounds within an integrated chlorosilane system Highly pure pyrogenic silica is produced in an integrated polycrystalline silicon production plant by separating offgas from polycrystalline silicon production into a high boiler fraction, vaporizing this fraction into a pyrogenic silica burner and reacting with air...	09/28/2010
7534411	Process for the preparation of pure silica A production process for producing high-purity silica from a crude silica source by means of fluosilic acid, including the steps of: (a) subjecting the crude silica souce and the fluosilicic acid to a reaction in a reaction stage, so as to produce silicon tetrafluor...	05/19/2009
7442357	Manufacture of silica aerogel via vapor phase reaction A kinetically controlled vapor reaction process for synthesizing silica areogel in a reaction container by injection of a precursor reagent vapor, a catalyst reagent vapor, super saturated steam as a component of the catalyst solution, and a hydrophobic reagent vapo...	10/28/2008
7431899	Apparatus for the continuous production of silicon oxide powder A silicon oxide powder can be continuously prepared by feeding a raw material powder mixture containing silicon dioxide powder into a reaction chamber (2) at a temperature of 1,100-1,600° C., to produce a silicon oxide gas, transferring the silicon oxide gas...	10/07/2008
RE40299	Mesoporous-silica films, fibers, and powders by evaporation This invention pertains to surfactant-templated nanometer-scale porosity of a silica precursor solution and forming a mesoporous material by first forming the silica precursor solution into a preform having a high surface area to volume ratio, then rapid drying or e...	05/06/2008
7351388	Pyrogenically produced silicon dioxide powder Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 300±25 m2/g, wherein the aggregates display an average surface area of 4800 to 6000 nm2, an average equivalent circle dia...	04/01/2008
7338982	Functionalized mesoporous silicate structures, and related processes A mesoporous material is described. It includes a network of interconnected pores within an L3 phase structure. The pores include pore walls of a silicate material functionalized with at least one metal cation—usually a transition metal. Articles which include the...	03/04/2008
7332144	Hydrophobic silica fine powder and making method A hydrophobic silica fine powder is prepared by premixing a hydrophilic silica fine powder with a dimer diol siloxane or cyclic siloxane as a hydrophobizing agent, mixing them in a ball mill for achieving dispersion and for achieving cleavage or disintegration and c...	02/19/2008
7255843	Low viscosity-increment fumed-silica and its slurry A fumed-silica, which can make a slurry having sufficient wettability to a polar liquid, excellent dispersibility, and low viscosity even in the high concentration, and a slurry thereof. A fumed-silica and its slurry are provided, wherein the water content is contro...	08/14/2007
RE39535	Method of making fused silica by decomposing siloxanes This invention relates to the production of high purity fused silica glass through oxidation or flame hydrolysis of a vaporizable silicon-containing compound. More particularly, this invention is directed to the use of vaporizable, halide-free compounds in said prod...	04/03/2007
7192461	High concentration silica slurry A high concentration silica slurry can be used for polishing of substrates, such as semiconductor materials. The slurry contains a silica powder dispersed in an solvent. The silica slurry has a silica concentration of more than 50% by weight and a viscosity of less ...	03/20/2007
7132157	Layer obtained from an aqueous dispersion containing a silicon/titanium mixed oxide powder prepared by flame-hydrolysis A layer which is obtained by thermal treatment from an aqueous dispersion applied to a substrate, the dispersion containing silicon/titanium mixed oxide powder prepared by flame hydrolysis. It is prepared by applying a dispersion which contains the silicon/titanium ...	11/07/2006
7133591	Jacket tube made of synthetically produced quartz glass and optical fibres produced using said jacket tube Jacket tubes of synthetically produced quartz glass as a semi-finished product for producing an outer cladding glass layer of an optical fiber are generally known. The invention relates to an improvement of a jacket tube in terms of inexpensive producibility and of ...	11/07/2006
7090809	Production of aluminum compounds and silica from ores A method for the production of inorganic aluminum substances and amorphous silica from aluminum oxide containing ores, comprising: (a) leaching of said ores with fluorosilicic acid to obtain aluminum fluosilicate solution; (b) filtering said leached solution from in...	08/15/2006
7083770	Amorphous, fine silica particles, and method for their production and their use The amorphous-silica particle having 0.1–0.7 μm of the average particle diameter, 5–30 m2/g of the specific surface area, less than 40% of the dispersion coefficient, and 20 μC/m2 of the absolute value of the triboelectrostatic charge, ca...	08/01/2006
7022299	Exfoliative clay and derivative thereof and method for producing the same The present invention discloses an exfoliative clay and a derivative thereof and a method for producing the same. The exfoliative clay is formed by emulsion exfoliating an inorganic layered silicate clay with an amphibious intercalating agent by powerfully stirring ...	04/04/2006
7000399	System for warming pressurized gas A plurality of vessels contains pressurized gas. Each vessel fluidly communicates with an adjacent vessel through a line. A heat exchanger is positioned in a heat conducting relationship with each line. The system includes an exhaust valve communicating with lower p...	02/21/2006
6994834	Surface-modified fine silica powder and use thereof A surface modified fine silica powder which has been treated, preferably, with a treating agent containing an amino group, characterized in that the powder exhibits an adsorption amount for an anion source compound of 150% or more of that of an original powder which...	02/07/2006
6979192	Burner head and gas burning appliance provided with such a burner head Disclosed is a burner head capable of securing heat resistance and durability characteristics and improving the quality of machining at the same time, capable of easily and stably machining a material into a complicated shape. A second metal primary material of the ...	12/27/2005
6972301	Process for producing organically modified metal oxides and products thereof A process of producing an organically modified metal oxide wherein an aqueous slurry of a metal oxide which can be peptized in the presence of an acid is admixed with an aqueous slurry of an oregano silage having the formula RySiX4-y, the mixtu...	12/06/2005
6932953	Particulate silica and its preparation Particulate silica is prepared by feeding a gas mixture of an organohalosilane gas, a flammable gas capable of generating water vapor when burned, and a free oxygen-containing gas to a reaction chamber through a multiple-tube burner, whereby the organohalosilane is ...	08/23/2005
6919054	Reactant nozzles within flowing reactors Improved reaction chamber designs are described that provide for improved control over the flow within the reaction chamber. The reaction chambers contain reactions for particle production from a flowing reactant stream. Improved reactant delivery nozzles are descri...	07/19/2005
6872402	Bactericidal silicon dioxide doped with silver Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/g...	03/29/2005
6835683	Quartz glass member and projection aligner A silica glass member of the present invention is one wherein when a composition thereof is expressed by SiOx, x is not less than 1.85 nor more than 1.95, wherein a concentration of hydrogen molecules included therein is not less than 1×1016 m...	12/28/2004
6800413	Low-silanol silica A silylated silica having an SiOH density per nm2 of less than 0.6, based on the BET-method surface area (DIN 66131 and 66132), is prepared by silylating silica in a process where loading, reacting, and purifying are performed in separate steps. ...	10/05/2004
6763683	Method for pure, fused oxide A method and furnace are described for producing a fused oxide body by decomposing a precursor compound of the oxide in a flame to form molten oxide particles and collecting those particles in a furnace constructed of a refractory material to form a fused oxide body...	07/20/2004
6759160	Silicon oxide powder and making method A silicon oxide powder represented by the formula: SiOx wherein 1.05≦x≦1.5 and having a BET specific surface area of 5-300 m2/g is useful as a negative electrode material to construct a lithium ion secondary cell having a high capacity and improved cy...	07/06/2004
6705127	Methods of manufacturing soot for optical fiber preforms and preforms made by the methods The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous...	03/16/2004
6696034	Method for producing hydrophobic silica fine powder Hydrophobic silica fine powder is produced by pyrolyzing a silane compound to form a silica fine powder and hydrophobizing the silica fine powder with an organohalosilane as hydrophobizing agent in a fluidization vessel. A portion of the silica fine powde...	02/24/2004
6696602	Method for the production of phosphonomethylglycine The present invention relates to a process for the preparation of phosphonomethylglycine, wherein N-phosphonomethyliminodiacetic acid N-oxide is brought into contact with a catalytically effective amount of thiocyanic acid or a salt thereof....	02/24/2004
6685906	Silicon oxide containing active silicon and its evaluation Silicon oxide containing active silicon represented by the general formula: SiOx wherein x is from 0.8 to 1.9, when analyzed by solid state NMR (29Si DD/MAS) with a sufficient relaxation time set, exhibits a spectrum having two separate peaks, a broad pea...	02/03/2004
6672110	Method of forming an optical fiber preform by combustionless hydrolysis A method for manufacturing a glass preform includes supplying a first gaseous or vapor phase composition to a reaction chamber; supplying water as a second gaseous or vapor phase composition to the reaction chamber; reacting the water and the first gaseou...	01/06/2004
6649268	Optical member made of silica glass, method for manufacturing silica glass, and reduction projection exposure apparatus using the optical member An optical member made of silica glass manufactured by the direct method where a material gas comprising an organosilicon compound is allowed to react in an oxidizing flame, said optical member having a 2×1014 molecules/cm3 or less ...	11/18/2003
6638982	Method of preparing a fumed metal oxide dispersion The invention provides a method of preparing a dispersion of a fumed metal oxide in a liquid carrier comprising the following sequential steps: (a) providing a liquid carrier at a pH that effects dissolution of the metal oxide at a rate the same as or gre...	10/28/2003
6622523	Method of converting halogenated compounds to glass The present invention provides a two stage process of thermal separation of CFCs and HCFCs followed by vitrification of the waste into a commercially viable glass. In the first stage, the hydrogenated compounds are reacted at elevated temperature with wat...	09/23/2003
6590116	Process for purifying siloxane The present invention is directed to a process for purifying siloxane. The invention relates to a method of making a purified siloxane feedstock for use in the manufacturing of silica glass. The invention further relates to solid phase extracting impuriti...	07/08/2003
6518210	Exposure apparatus including silica glass and method for producing silica glass A silica glass has a structure determination temperature of 1200 K or lower and an OH group concentration of at least 1,000 ppm. The silica glass is used for photolithography together with light in a wavelength region of 400 nm or shorter....	02/11/2003
6455455	Silicon-aluminum mixed oxide A silicon-aluminum mixed oxide produced by flame hydrolysis and having a composition of from 1 to 99.999 wt. % Al2 O3, the remainder being SiO2, which mixed oxide exhibits an amorphous structure in the X-ray diffraction pa...	09/24/2002
6432151	Preparing method of silica slurry for wafer polishing Disclosed herein is a method of preparing silica slurry for wafer polishing. This method includes pre-treating relatively inexpensive and commercially available fumed or colloidal silica particles as a seed by a settling, a crushing using a ball mill and ...	08/13/2002

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Class 423/336 - By hydrolyzing vapor phase silicon compound