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| Number | Title | Issue Date |
| 8163080 | Fumed silanized and ground silica The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica. ... | 04/24/2012 |
| 8092587 | Stable aqueous dispersions of precipitated silica The invention relates to stabilized dispersions of precipitated silicon dioxide, to a process for production thereof and to the use thereof, especially for production of paper coatings for glossy photo paper for inkjet printing. ... | 01/10/2012 |
| 8052788 | Method of producing silica sols with controllable broad size distribution and minimum particle size Colloidal silica having a controllable broad particle size distribution and a controllable minimum particle size is disclosed and claimed. Particles below a predetermined size are excluded from the product colloidal silica of the invention. A method for continuously... | 11/08/2011 |
| 8025726 | Sulfur containing silica particle A silica containing composition is disclosed. The composition comprises a compound having the following formula: (SiO2)x(OH)yMzSaF: wherein M is at least one of the following metal or metalloid cations: boron, m... | 09/27/2011 |
| 7959728 | Mesoporous silica particles and production process thereof A process for wet pulverizing mesoporous silica particles while a surfactant exists in mesopores, and mesoporous silica particles having an average particle diameter of 1 μm or less, wherein the volume of mesopores having a diameter of 2 to 50 nm is 0.7 mL/g or mor... | 06/14/2011 |
| 7918933 | Dispersion of high surface area silica Dispersion comprising water and mixed potassium silicon oxide powder, where—the mixed oxide powder is in the form of aggregates of primary particles, has a BET surface area of 100 to 400 m2/g, has an average aggregate diameter in the dispersion of less ... | 04/05/2011 |
| 7799126 | Pigment Disclosed are a pigment comprising a flake-form substrate, where natural and synthetic clay minerals are excluded as substrate, and an anion-binding layer, in particular comprising a layered double hydroxide, where the anion-binding layer comprises anion-forming org... | 09/21/2010 |
| 7641730 | Glass flake and method of manufacrturing the same The present invention provides a glass flake having sufficiently high visible-light absorptivity. The glass flake of the present invention includes a glass composition that contains a transition metal oxide such as an iron oxide and that allows the glass flake to ha... | 01/05/2010 |
| 7625445 | Aggregate for making a molded article and a method of making the aggregate An aggregate for making a molded article and a method of making the aggregate is disclosed. The aggregate consists of an acrylate based resin matrix and anti abrasive particles chiefly quartz particles having a size of between 0.1 mm and 1.2 mm, at least 30 percent ... | 12/01/2009 |
| 7537653 | Microsilica materials with improved pozzolanic activity A new pozzolanic material basically conformed of microsilica with a minimum of silica of 85% in its composition is described, where the silica of the material is conformed mainly of cristobalite and tridimite. Unlike microsilica conformed basically of quartz, the mi... | 05/26/2009 |
| 7503971 | Radiative cooling surface coatings A surface coating composition which exhibits low solar absorption and preferential emission at wavelengths corresponding to atmospheric windows in the infra-red regions is provided by the addition of microspheres to a composition containing a solar reflective pigmen... | 03/17/2009 |
| 7413838 | External additives for electrophotographic toner, electrophotographic toner, electrophotographic developer, image forming method and image forming apparatus An external additives for electrophtographic toner comprising finely divided oxide particulate including a silicon compound and a compound for doping said oxide particulate, wherein particle diameter of the primary particle of said finely divided oxide particulate i... | 08/19/2008 |
| 7374609 | Optically variable pigments having an asymmetrical layer structure The present invention relates to pigments whose particles have a length of from 2 μm to 5 mm, a width of from 2 μm to 2 mm and a thickness of from 50 nm to 1.5 μm and a ratio of length to thickness of at least 2:1, the particles having a core of a metallically re... | 05/20/2008 |
| 7335342 | Process for the preparation of sodium silicate from Kimberlite tailing In the present invention a process for the preparation of sodium silicate from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting Kimberlite tailing with mineral acid to remove acid soluble impurities foll... | 02/26/2008 |
| 7335250 | Dental composites based on X-ray-opaque mixed oxides prepared by flame spraying The present invention relates to dental composites comprising at least one nanoparticulate mixed oxide (a) of SiO2 with X-ray-opaque metal oxides of one or more elements selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, ... | 02/26/2008 |
| 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 |
| 7326289 | Film containing a photo-catalyst apatite, its formation method, coating liquid, and electronic device having portion coated with photo-catalyst apatite-containing film A film containing a photo-catalyst apatite contains an inorganic coating main material, and a powdered photo-catalyst apatite and powdered titanium oxide that disperse within the inorganic coating main material, in which the total content of the photo-catalyst apati... | 02/05/2008 |
| 7318861 | Effect pigment An effect pigment is constituted by coated laminar platelets in which the platelets are a mixture of different platelet materials, one of which is platy glass or platy aluminum oxide, and in which the pigment exhibits visual homogeneity. ... | 01/15/2008 |
| 7291216 | Platelet-shaped pigments The present invention relates to platelet-shaped pigments comprising (a) a layer obtained by calcination of a layer comprising SiOz wherein 0.03≦z≦2.0 and a metal, to a process for the production thereof, and to the use thereof in paints, text ink-jet... | 11/06/2007 |
| 7285162 | Titanium dioxide pigment having improved light stability In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints. ... | 10/23/2007 |
| 7285330 | Texture-coated silica Texture-coated silica can be prepared by spraying a fumed silica with water and a coating agent, for example a thermoplastic elastomer, while mixing in a suitable mixing vessel, then milling and subsequently drying the mixture. The texture-coated silica can b... | 10/23/2007 |
| 7285508 | Glass flake The present invention provides a glass flake that is substantially free of boron trioxide (B2O3), barium oxide (BaO), zinc oxide (ZnO), and fluorine (F) and has sufficient heat resistance and good formability for glass flake. The glass flake of... | 10/23/2007 |
| 7282264 | Composition and method for controlling moisture A composition and method which exhibits enhanced moisture sealing properties, suitable for use with flooring materials, such as concrete, and flooring installations, such as carpeting, wood, tiles, etc. are provided. The composition is preferably non-water-based and... | 10/16/2007 |
| 7273522 | Plane-parallel structures of silicon/silicon oxide The present invention relates to plane-parallel structures of silicon/silicon oxide (silicon/silicon oxide flakes), obtainable by heating plane-parallel structures of SiOy in an oxygen-free atmosphere at a temperature above 400° C., wherein 0.70≦y≦1.... | 09/25/2007 |
| 7255736 | Effect pigments based on thin SiO flakes Effect pigments having improved optical properties based on SiO2 flakes coated with one or more layers, where the SiO2 flakes have a thickness of from 50 nm to 150 nm; processes for the preparation thereof; and use of these pigments in cosmetic... | 08/14/2007 |
| 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 |
| 7253224 | Silica-based particulates A silica-based particulate material that may contain less than 5 wt. % of a multivalent cation and a method of preparing such a silica-based particulate material. The silica-based particulate material may be characterized as having a median particle size of at least... | 08/07/2007 |
| 7241336 | Pyrogenically produced aluminum-silicon mixed oxides Pyrogenically produced aluminum-silicon mixed oxides with a BET surface of more than 300 m2/g and a composition of 0.01 to 99.99% by wt. AI2O3, remainder SiO2 are produced in accordance with the method of flame pyrolysis o... | 07/10/2007 |
| 7220305 | Particulate metal oxide A particulate metal oxide having the mean length of the primary particles in the range from 50 to 90 nm, the mean width of the primary particles in the range from 5 to 20 nm, and the median volume particle diameter of the secondary particles is less than 45 nm. The ... | 05/22/2007 |
| 7220793 | Curable film-forming composition exhibiting improved resistance to degradation by ultraviolet light A curable film-forming composition is provided comprising (i) 10 to 90 percent by weight based on the total weight of resin solids in the film-forming composition of a crosslinking agent; (ii) 10 to 90 percent by weight of a polymer containing a plurality of functio... | 05/22/2007 |
| 7217318 | Nacreous pigment and method for the manufacture thereof In a method for the manufacture of a nacreous pigment, in which a multi-layer film is produced by vacuum evaporation coating on a substrate and, after release from the substrate, the particles thus produced are comminuted to pigment particles of a desired size, vapo... | 05/15/2007 |
| 7208038 | Silane-modified biopolymeric, biooligomeric, oxidic or siliceous filler, process for its production and its use Silane-modified biopolymeric, biooligomeric, oxidic or siliceous filler obtainable by reacting at least one biopolymeric, biooligomeric, oxidic or siliceous filler in a compressed gas with at least one silane. The silane-modified biopolymeric, biooligomeric, oxidic ... | 04/24/2007 |
| 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 |
| 7186440 | Process for producing hydrophobic silica powder A process for producing a hydrophobic silica powder, comprises the steps for hydrophobic treatment of: adding to a silica sol in mixed solvent having a silica concentration of 5 to 50 mass % obtained by mixing an aqueous silica sol containing hydrophilic colloidal s... | 03/06/2007 |
| 7169322 | Aqueous dispersion, process for its production and use Aqueous dispersion containing a silicon-aluminum mixed oxide powder, the powder containing 0.1 to 99.9 wt. % Al2O3 and Si—O—Al-bonds. The dispersion can be produced using dispersing and/or grinding devices which a achieve an energy input of... | 01/30/2007 |
| 7169223 | Effect pigments having a strong color flop The present invention relates to effect pigments having a color flop comprising metal oxide-coated SiO2 flakes having a uniform layer thickness, where the color flop runs through all four quadrants of the a,b color coordinate system (CIELAB L,a,b system).... | 01/30/2007 |
| 7163999 | Resin particle and method for preparation thereof A method for preparing a resin particle having a large surface area and a shape factor (SF-1) of 110 to 800, which comprises a step of applying a shear force to an aqueous dispersion having a viscosity of 300 to 100,000 mPa·s formed by adding a thickener to an aque... | 01/16/2007 |
| 7157025 | Transparent coloring composition and color filter The transparent coloring composition comprises a solvent and an organic-inorganic composite pigment comprising (i) fine white inorganic particles and an organic pigment adhered to the surface of the respective fine white inorganic particles, or (ii) fine white inorg... | 01/02/2007 |
| 7156174 | Contained micro-particles for use in well bore operations The present invention relates to well bore operations, and more particularly, to contained micro-particles, and methods for using such contained micro-particles in cementing operations. An exemplary method of facilitating the use of micro-particles in a well bore fl... | 01/02/2007 |
| 7144628 | Spherical silica-titania-based fine particles surface-treated with silane, production process therefor, and external additive for electrostatically charged image developing toner using same Spherical silica-titania-based fine particles surface-treated with silane are provided. The fine particles have a titanium atom content of 0.001 to 5% by weight, a frictional electrification with iron powder of −100 to −300 μC/g, a bulk density of 0.2 to 0.4 g/... | 12/05/2006 |
