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8592504 Amorphous siliceous powder, process for production thereof, resin composition, and semiconductor encapsulation material  
A semiconductor encapsulation material which exhibits a low viscosity and further improved moldability in encapsulation even when highly loaded with an inorganic filler; an amorphous siliceous...
8545788 Low-surface area fumed silicon dioxide powder  
Fumed silicon dioxide powder with a BET surface area of 20 to 35 m2/g, characterized in that a) the number-based median particle diameter is 60 to 150 nm, and b) the proportion of particles with a...
8507033 Surface-modified, pyrogenically prepared silicas  
Surface-modified, pyrogenically prepared silica is prepared by subjecting the pyrogenically prepared silica, which is in the form of aggregates of primary particles and possesses a BET surface...
8480846 Silica and also epoxy resins  
Fumed silicon dioxide powder in the form of aggregated primary particles having a BET surface area of 175±15 m2/g and a thickening effect, based on the BET surface area, of greater than 18 mPas...
8404774 Adhesive and sealant systems  
Adhesive and sealant systems Adhesive and sealant systems on the basis of unsaturated polyester resins, epoxy resins, polyurethane, silane-terminated polymers, vinyl ester resins, acrylates,...
8389617 Silicas  
The invention provides structurally modified, pyrogenically prepared silicas obtained by reaction of pyrogenic silicas with cyclic polysiloxanes of the type —[O—Si(R2)]n—, where R is a C1 to C6...
8354088 Methods and apparatus for recovery of silicon and silicon carbide from spent wafer-sawing slurry  
Methods, systems, and apparatus are disclosed herein for recovery of high-purity silicon, silicon carbide and PEG from a slurry produced during a wafer cutting process. A silicon-containing...
8337794 Silicone rubber  
Silicone rubber containing a fumed silica doped with potassium by means of aerosol.
8257674 Particles having a small specific surface and a great thickening effect  
Particles having a relative viscosity or thickening effect ηrelof more than 2, measured in a liquid medium having a viscosity of 1 Pas at a temperature of 25° C. and measured at a shear gradient...
8252853 Process for preparation of rubber mixtures containing silicon dioxide  
Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185...
8192522 Chemical process for generating energy  
A process for generating energy comprises process comprises exothermically reacting Mg with SiO2 to yield at least Mg2Si and Si; b)reacting the Mg2Si to yield at least lower silanes, and at least...
8142753 Pyrogenic silica produced in a production facility with high capacity  
A large scale process for preparing fumed silica with consistent product parameters wherein a silica precursor compound is fed to a burner at ≧100 Kg/h along with a combusting gas at ≧300 m3/h and...
8084392 Crystalline silica-free diatomaceous earth filter aids and methods of manufacturing the same  
A method of producing a range of diatomaceous earth filter aids having selectable permeabilities and less than about 1 percent by weight total crystalline silica. The method includes milling...
8057772 Mesoporous silica particles and preparation method thereof  
Disclosed are mesoporous silica particles and a preparation method thereof, particularly, a method of preparing mesoporous silica particles, including mixing a silica precursor, an...
8053507 Highly filled elastomeric resin compositions with added microsilica for processability  
The present invention relates to elastomeric compounds having a high filler content additionally containing 1 to 400% by weight of resin of microsilica as a modifier to improve the processability....
8038971 Fumed silica of controlled aggregate size and processes for manufacturing the same  
The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as...
7981211 Surface-modified silicas  
Surface-modified, fumed silica having the data: BET surface area, m2/g: 25-400; Average primary particle size, nm: 5-50; pH: 3-10; Carbon content, % by weight: 0.1-10; Potassium content...
7976807 Method for detoxifying HCD gas and apparatus therefor  
Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and...
7955582 Method for producing crystallized silicon as well as crystallized silicon  
A method for producing crystallized silicon according to the EFG process by using a shaping part, between which part and a silicon melt, crystallized silicon grows in a growth zone. Inert gas and...
7910081 Process for the production of fumed silica  
The invention provides a process for the production of fumed silica. The process comprises providing a silicon halide feedstock comprising about 80% to 100% methyltrichlorosilane, combining the...
7892510 Silicon dioxide dispersion  
Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis...
7893182 Manufacture of resins  
A method of forming a powder and/or discrete gel particles of a compound selected from the group of a metallic oxide, a metalloid oxide, a mixed oxide, an organometallic oxide, an organometalloid...
7892643 Metal and oxides thereof and methods to make same  
Metal oxides and metals are described. The metal oxides and metals, such as silica, are preferably obtained by removing a removable template to obtain a metal oxide or metal material. Applications...
7888396 Silicon dioxide dispersion  
Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis...
7850938 Silicon particles, silicon particle superlattice and method for producing the same  
A production method, comprising a step of synthesizing silicon particle-containing silicon oxide particles by performing a gas phase reaction of monosilane gas and oxidizing gas for oxidizing the...
7842269 Pyrogenically prepared silicon dioxide compacted to give crusts  
Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if...
7824643 Silicon dioxide dispersion  
Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis...
7799303 Method of preparing silica nanoparticles from siliceous mudstone  
There is provided a method of preparing silica (SiO2) nanoparticles from siliceous mudstone which is silica mineral sources, using a chemical reaction. The method of preparing silica nanoparticles...
7785560 Purification of finely divided, pyrogenically prepared metal oxide particles  
Process for removing halide compounds adhering to finely divided metal oxide particles by means of steam, wherein the metal oxide particles are applied to the upper part of an upright column and...
7763564 Titanium catalyst, its preparation and its use in epoxidation reactions  
The invention relates to a process for the preparation of a titanium catalyst which process comprises: (a) drying a silica carrier at a temperature of from 300 to 800° C. to obtain a dried...
7722849 Pyrogenic silicon dioxide and a dispersion thereof  
Pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than...
7615201 Spherical particles of silica-containing compound oxide and method of production  
By using a halogen-free siloxane and an organometallic compound containing at least one metal other than silicon as feed stocks, and simultaneously atomizing and burning them in a flame, spherical...
7585481 Method for producing amorphous silica ash  
The invention provides apparatus and a method for exothermic treatment of feed material to provide an ash. The apparatus includes a housing extending about a central axis and having first and...
7585480 Highly pure ultra-fine SiOx powder and method for production thereof  
A highly pure ultra-fine SiOx (wherein x is from 0.6 to 1.8) powder having a specific surface area of at least 10 m2/g and a total content of Na, Fe, Al and Cl of at most 10 ppm is provided. The...
7572423 Fumed metal oxide particles and process for producing the same  
The invention provides a process for producing fumed metal oxide particles comprising providing a stream of a liquid feedstock comprising a volatizable, non-halogenated metal oxide precursor,...
7541014 Pyrogenically produced silica  
Pyrogenically produced silica powder with a BET surface of 30 to 90 m2/g, a dibutyl phthalate number of at least 80 and a tamped density of no more than 110 g/l. It is produced in that at least...
7534410 Method for making silica nanoparticles by flame spray pyrolysis adopting two-fluid nozzle  
The invention relates to a method for making silica nanoparticles using a flame reactor, which includes a droplet spray having a two-fluid nozzle and a burner of a quintuple tube structure. In...
7534409 Pyrogenic silicon dioxide powder and dispersion thereof  
Pyrogenically produced silicon dioxide powder with a specific surface area of between 5 and 600 m2/g and a carbon content of less than 500 ppm, which displays a specific dibutyl phthalate...
7507389 Hydrophobic fumed silica  
A hydrophobic fumed silica treated with a cyclic dimethylsiloxane, the hydrophobic fumed silica having an M-value representing an oleophilic degree in a range of 48 to 65, a tapping bulk density...
7494636 Highly dispersible fine hydrophobic silica powder and process for producing the same  
A high dispersible hydrophobic fine silica powder can be made, wherein the silica powder has hydrophobicity of more than 50%, triboelectrostatic charge of more than −500 μC/g, decomposition rate...
7439298 Pyrogenically produced silicon dioxide powder and silicone sealing compound containing this powder  
Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 150±15 m2/g, wherein the aggregates display an average surface area of...
7438882 Gel and powder making  
A method of forming a gel and/or powder of a metallic oxide, metalloid oxide and/or a mixed oxide or resin thereof from one or more respective organometallic liquid precursor(s) and/or...
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...
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...
7214363 Method for preparing composite microparticles  
Composite microparticles having thin coating layers can be simply prepared by bringing a host particle precursor into contact with a flame generated in a burner movably mounted at the bottom of a...
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...
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...
7090815 Nanometer engineering of metal-support catalysts  
A method of forming a catalyst body by forming a first layer of hemispherical grain polysilicon over a substrate, and oxidizing at least a portion of the first layer to form a second layer of...
7090821 Metal oxide powder for high precision polishing and method of preparation thereof  
The present invention relates to a metal oxide powder for high precision polishing and prepartion thereof, comprising aggregates formed by cohesion of primary particles, which has a cohesive...
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...
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