Patent application number | Description | Published |
20080264299 | Aluminium Oxide Dispersion - Aluminium oxide dispersion, which is stable in a pH range 5 from 5 to 9 and has an aluminium oxide content of at least 40 wt. %, obtainable by dispersing pyrogenically produced aluminium oxide particles in an aqueous phase, wherein one or several at least dibasic hydroxycarboxylic acids present dissolved in the dispersion and at least one salt of a 10 dialkali metal hydrogen phosphate and/or alkali metal dihydrogen phosphate are added to the aqueous phase each mutually independently in a quantity of 0.3−3×10 | 10-30-2008 |
20090111919 | ALUMINIUM OXIDE-CONTAINING DISPERSION - Dispersion containing aluminium oxide and water, wherein the aluminium oxide is present in the form of aggregated primary particles with a BET surface area of 20 to 200 m | 04-30-2009 |
20090261309 | SILICON DIOXIDE DISPERSION COMPRISING POLYOL - Stable, pourable silicon dioxide dispersion, in which the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, and which comprises at least 35 wt. % of a silicon dioxide powder, 3 to 35 wt. % of at least one polyol, 20 to 60 wt. % of water, 0 to 10 wt. % of an additive and a substance having an alkaline action in an amount such that a pH of 1010-22-2009 | |
20100107930 | 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 m | 05-06-2010 |
20100117021 | Use of a Cationic Silicon Dioxide Dispersion as a Textile Finishing Agent - An aqueous dispersion for use as a finishing agent for textiles, wherein the dispersion contains a pyrogenically produced, aggregated silicon dioxide powder and a cationic polymer which is soluble in the dispersion, wherein the cationic polymer is present in a quantity such that the particles of the silicon dioxide powder exhibit a positive zeta potential. | 05-13-2010 |
20100203173 | SILICA DISPERSION - Dispersion containing, in addition to water, 0.5 to 20% by weight of hydrophobic silica, 0.01 to 10% by weight of a gelling additive, or viscosity-increasing additive which, as further components, contains at least one phenol or at least one phenol derivative and/or at least one aldehyde. It is prepared by dispersing the individual components successively or together in water, in which case the individual components are deaerated before and/or during the addition or the dispersion is deaerated during the individual dispersion steps and thereafter the residual air present in the dispersion is removed by application of vacuum. The dispersion can be used as insecticide and for controlling pathogenic agents. | 08-12-2010 |
20100242801 | PROCESS FOR PREPARING SILICON DIOXIDE DISPERSIONS - Process for preparing an alkaline dispersion of aggregated silicon dioxide particles by dividing a preliminary dispersion within a pH of 3 to 5 into at least two streams, placing these streams under a pressure of at least 50 bar and depressurizing them to a collision point, each via one nozzle, in a grinding chamber, and admixing the dispersion that runs off at the bottom, while still in the grinding chamber, with an alkaline substance in an amount such that the dispersion overall has a pH of more than 7. | 09-30-2010 |
20100288795 | SILICON DIOXIDE DISPERSION - Dispersion comprising hydrophobic pyrogenically prepared silicon dioxide, alcohol and at least one additive which promotes the dispersion and, as additional component, at least one insecticide and/or acaricide. The dispersion can be canned in spray cans and used as insecticide. | 11-18-2010 |
20100308287 | SILICON DIOXIDE DISPERSION COMPRISING POLYOL - Stable, pourable silicon dioxide dispersion, in which the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, and which comprises at least 35 wt. % of a silicon dioxide powder, 3 to 35 wt. % of at least one polyol, 20 to 60 wt. % of water, 0 to 10 wt. % of an additive and a substance having an alkaline action in an amount such that a pH of 1012-09-2010 | |
20110000397 | DISPERSION COMPRISING HYDROPHOBIZED SILICON DIOXIDE PARTICLES - Aqueous dispersion which comprises hydrophobized silicon dioxide particles and in each case one or more dispersing additives, a basic composition, and which is free of colour pigments, inactive fillers and binders, in which the hydrophobized silicon dioxide particles have a methanol wettability of 30 to 60 and are present in the dispersion with a proportion of 0.1 to 50% by weight,—the proportion of water is 30 to 90% by weight based on the dispersion,—the dispersing additive is at least one phosphate ester of an ethoxylated alcohol having 8 to 18 carbon atoms, the proportion of which is 3 to 25% by weight based on the proportion of the hydrophobized silicon dioxide particles,—the basic composition comprises or consists of one or more amines of the general formula RNH | 01-06-2011 |
20110079745 | USE OF A CATIONIC SILICON DIOXIDE DISPERSION AS A TEXTILE FINISHING AGENT - An aqueous dispersion for use as a finishing agent for textiles, wherein the dispersion contains a pyrogenically produced, aggregated silicon dioxide powder and a cationic polymer which is soluble in the dispersion, wherein the cationic polymer is present in a quantity such that the particles of the silicon dioxide powder exhibit a positive zeta potential. | 04-07-2011 |
20110086958 | PROCESS FOR PREPARING REDISPERSIBLE SURFACE-MODIFIED SILICON DIOXIDE PARTICLES - Process for preparing surface-modified silicon dioxide particles with a mean particle diameter of at most 100 nm, comprising the steps of: a) providing a predispersion b) high-pressure grinding of the predispersion to form a dispersion c) removing the liquid phase of the dispersion, the predispersion comprising a1) surface-modified silicon dioxide particles which are at least partly aggregated, are bonded to the surface-modifying component via Si—O—Si bonds and still have reactive groups on their surface, a2) one or more organosilicon compounds which have at least one silicon-carbon bond and at least one functional group which can react with the reactive groups to form a covalent Si—O—Si bond, and a3) one or more solvents. Redispersible, surface-modified silicon dioxide particles obtainable by this process. Use of these in toner powders, silicone rubber, adhesives and scratch-resistance surface coatings. | 04-14-2011 |
20110123806 | DISPERSION OF HYDROPHOBICIZED SILICON DIOXIDE PARTICLES AND GRANULES THEREOF - Process for preparing a dispersion of surface-modified silicon dioxide particles having an average particle diameter of not more than 100 nm by high-pressure milling of a preliminary dispersion comprising a) 10% to 50% by weight of surface-modified silicon dioxide particles, b) at least one glycol monoether of the general formula (A): H | 05-26-2011 |
20110155951 | PROCESS FOR THE PRODUCTION OF METAL OXIDE AND METALLOID OXIDE DISPERSIONS - Process for the production of an aqueous dispersion of pyrogenically produced metal oxide and metalloid oxide powders with a BET surface area of between 5 and 600 m | 06-30-2011 |
20120111224 | DISPERSION, SLURRY AND PROCESS FOR PRODUCING A CASTING MOULD FOR PRECISION CASTING USING THE SLURRY - Slurry which contains a) from (50) to (80) % by weight of refractory particles having an average particle size of from (0.5) m to (150) m, b) from (5) to (35) % by weight of aluminium oxide particles having an average particle diameter of less than (300) nm and c) from (5) to (35) % by weight of water and d) a pH of from (5) to (12). Process for producing the slurry using a dispersion, and also the dispersion itself. Process for producing a casting mould, and also the casting mould itself. | 05-10-2012 |
20120156370 | PROCESS FOR THE INFILTRATION OF POROUS CERAMIC COMPONENTS - Process for the infiltration of porous ceramic components, in which a dispersion containing metal oxide particles and having a metal oxide content of at least 30% by weight, based on the dispersion, is used, where the particle size distribution d | 06-21-2012 |