Patent application number | Description | Published |
20080217591 | Stabilised Aluminium Zirconium Mixed Oxide Powder - Mixed oxide powder consisting of particles with the components zirconium dioxide, aluminium oxide and at least a third component selected from the group including yttrium oxide, magnesium oxide or calcium oxide, wherein mixed oxide powder has an aluminium oxide content 0.01 to 10 wt. % and is homogeneously distributed in the mixed oxide particles, the content of aluminium oxide, zirconium dioxide and yttrium oxide is at least 99.5 wt. %, based on the total quantity of the powder, and the BET surface area is 20 to 80 m2/g. It is obtained by atomising a solution containing at least one starting compound for each of aluminium oxide, zirconium dioxide and the third component, allowing the atomised solution to react with oxygen in a reaction chamber at a reaction temperature 700 to 15000° C., cooling the hot gases and the solid products and then separating the solid product from the gases. It can be used as a dental material. | 09-11-2008 |
20080267852 | Process for Preparing Pulverulent Solids - Process for preparing pulverulent solids, in which one or more oxidizable and/or hydrolysable metal compounds are reacted in a high-temperature zone in the presence of oxygen and/or steam, the reaction mixture is cooled after the reaction, and the pulverulent solid is removed from gaseous substances, wherein at least one metal compound is introduced into the high-temperature zone in solid form and the evaporation temperature of the metal compound is below the temperature of the high-temperature zone. | 10-30-2008 |
20080305022 | Goldcatalyst on Ceria-Containing Support - Goldcatalyst Goldcatalyst comprising gold on a support of ceria or ceria-manganese oxide is used for the oxidation of CO in a H | 12-11-2008 |
20090087496 | PROCESS FOR PREPARING MIXED METAL OXIDE POWDERS - Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated and oxidized, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein as starting materials, at least one pulverulent metal and at least one metal compound, the metal and the metal component of the metal compound being different and the proportion of metal being at least 80% by weight based on the sum of metal and metal component from metal compound, together with one or more combustion gases, are fed to an evaporation zone of a reactor, where metal and metal compound are evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the starting materials and combustion gases completely. | 04-02-2009 |
20090202427 | PROCESS FOR PREPARING MIXED METAL OXIDE POWDERS - Process for preparing mixed metal oxide powders Abstract Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated in an evaporation zone of a reactor and oxidized in the vaporous state in an oxidation zone of this reactor, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein at least one pulverulent metal, together with one or more combustion gases, is fed to the evaporation zone, the metal is evaporated completely in the evaporation zone under nonoxidizing conditions, an oxygen-containing gas and at least one metal compound are fed, separately or together, in the oxidation zone to the mixture flowing out of the evaporation zone, the oxygen content of the oxygen-containing gas being at least sufficient to oxidize the metal, the metal compound and the combustion gas completely. | 08-13-2009 |
20100003179 | PROCESS FOR PREPARING METAL OXIDE POWDERS - Process for preparing a metal oxide powder, in which starting materials are evaporated and oxidized, wherein a metal melt in the form of droplets and one or more combustion gases are fed to the evaporation zone of a reactor, where the metal melt is evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the metal and the combustion gases completely. | 01-07-2010 |
20100008872 | SILICA COATED ZINC OXIDE PARTICLES OBTAINABLE BY A FLAME PYROLYSIS PROCESS - Zinc silicon oxide particles with a core-shell structure which have a Zn/Si ratio of from 2 to 75, in atom %/atom %, whose fraction of Zn, Si and O is at least 99% by weight, based on the zinc silicon oxide particles, which have a BET surface area of from 10 to 60 m | 01-14-2010 |
20100029080 | AQUEOUS CERIUM OXIDE DISPERSION - Aqueous cerium oxide dispersion Aqueous cerium oxide dispersion, containing 5 to 60% by weight cerium oxide. It can be used to polish SiO | 02-04-2010 |
20100040567 | SURFACE-MODIFIED ZINC OXIDE-SILICON DIOXIDE CORE-SHELL PARTICLES - Surface-modified zinc-silicon oxide particles which consist of a core, a first coating layer surrounding the core, and a second coating layer surrounding the first coating layer, where the core is crystalline and consists of aggregated zinc oxide primary particles having a primary particle diameter of from 10 to 75 nm, the first coating layer consists of one or more compounds containing the elements Zn, Si and O, the second coating layer comprises linear and/or branched alkylsilyl groups having 1 to 20 carbon atoms bonded chemically to the first coating layer, which have an average aggregate area of less than 40 000 nm | 02-18-2010 |
20100092411 | HYDROPHOBIC ZINC OXIDE POWDER - Hydrophobic zinc oxide powder in the form of partially or completely coated aggregates of zinc oxide primary particles having a carbon content of from 0.4 to 1.5% by weight, based on the hydrophobic zinc oxide powder, and a BET surface area of from 25 to 100 m | 04-15-2010 |
20100204033 | ZIRCONIUM DIOXIDE POWDER AND ZIRCONIUM DIOXIDE DISPERSION - Zirconium dioxide powder in the form of aggregated primary particles, having a BET surface area of 30 to 150 m2/g and a Berger whiteness of at least 88%. It is prepared by atomizing a solution which comprises an organic zirconium compound and mixing it with a combustion gas and air and allowing the mixture to burn in a flame into a reaction chamber surrounded by a casing, where the temperature in the reaction chamber and along the side of the wall of the casing facing the reaction chamber is at least 500° C. Dispersion comprising the zirconium dioxide powder. Use of the zirconium dioxide powder and of the dispersion for producing ceramics. | 08-12-2010 |
20110006247 | HYDROPHOBIZED SILICON-IRON MIXED OXIDE - Hydrophobized silicon-iron mixed oxide powder, characterized in that it has the following physicochemical characteristics: BET surface area 20 to 75 mVg; Carbon content 0.5 to 10% by weight; Tamped density 150 to 600 g/l; Chlorine content 0.1 to 3.0%; Drying loss 0.1 to 4% by weight; DVS isotherm (60%) 0.5 to 1.5% by weight; Heating rate (Is, 10%) 50 to 550° C./s; 90% range (number) 5 to 50 nm; 90% range (weight) 5 to 150 nm; Overall range 2 to 200 nm, is prepared by treating a silicon-iron mixed oxide powder with the surface modifier either in spray form or in vapour form, and then heat treating it. The surface-modified oxidic particles can be used as a filler in adhesives. Further fields of use are use for data carriers, as a contrast agent in imaging processes, for biochemical separation and analysis processes, for medical applications, as an abrasive, as a catalyst or as a catalyst support, as a thickener, for thermal insulation, as a dispersing aid, as a flow aid and in ferrofluids. | 01-13-2011 |
20110147641 | SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES - Surface-modified superparamagnetic oxidic particles, characterized by the following physicochemical characteristics: BET surface area 20 to 75 m2/g; Carbon content 0.5 to 6.0% by weight; Tamped density 150 to 500 g/l; Chlorine content 50 to 1000 ppm; Drying loss 0.1 to 4.0% by weight are prepared by contacting the oxides with the surface modifier either by spraying or vapour deposition and then heat-treating them. The surface-modified oxidic particles can be used as a filler in adhesives. Further fields of application are use for data carriers, as a contrast agent in imaging processes, for biochemical separation and analysis processes, for medical applications, as an abrasive, as a catalyst or as a catalyst support, as a thickener, for thermal insulation, as a dispersing assistant, as a flow assistant and in ferrofluids. | 06-23-2011 |
20110207869 | IRON-SILICON OXIDE PARTICLES WITH A CORE-SHELL STRUCTURE - Iron-silicon oxide particles with a core-shell structure, which have a) a BET-surface area of 10 to 80 m | 08-25-2011 |
20110244387 | LOW-SURFACE AREA FUMED SILICON DIOXIDE POWDER - Fumed silicon dioxide powder with a BET surface area of 20 to 35 m | 10-06-2011 |
20120080637 | COMPOSITE MATERIAL COMPRISING POLYETHYLENE AND MAGNETIC PARTICLES - Composite material which is in pellet form and which comprises particles with a core-shell structure, where the core of the particles comprises one or more magnetic materials, and the shell comprises silicon dioxide, and which comprises a polyethylene crosslinkable in the presence of a heat-activatable free-radical initiator and/or polyethylene-containing copolymers. Process for the crosslinking of polyethylenes, by mixing the composite material, one or more heat-activatable free-radical initiator(s) and at least one polyethylene, and heating the mixture inductively. | 04-05-2012 |
20120130023 | HEAT-ACTIVATABLE FREE-RADICAL INITIATORS AND COMPOSITE MATERIAL WHICH COMPRISES MAGNETIC PARTICLES - Composite material comprising—one or more heat-activatable free-radical initiators selected from the group consisting of organic peroxides and/or initiators having labile carbon-carbon bonds and particles which have a core-shell structure and the core of which comprises one or more magnetic materials, while the shell comprises silicon dioxide. | 05-24-2012 |
20130040202 | MIXED OXIDE POWDER CONTAINING THE ELEMENTS LITHIUM, MANGANESE, NICKEL AND COBALT AND METHOD FOR PRODUCING SAME - Mixed oxide which has the composition Li | 02-14-2013 |
20130045158 | METHOD FOR PRODUCING MIXED OXIDES COMPRISING LITHIUM - Process for preparing a lithium-containing mixed oxide powder, wherein
| 02-21-2013 |
20130303658 | IRON-SILICON OXIDE PARTICLES HAVING AN IMPROVED HEATING RATE IN AN ALTERNATING MAGNETIC AND ELECTROMAGNETIC FIELD - Iron-silicon oxide particles with a core and an outer shell have improved heating rates in a magnetic field. The core contains maghemite, magnetite, and haematite. The outer shell is essentially or exclusively silicon dioxide. The crystallite diameter of the haematite determined by X-ray diffraction is greater than 120 nm. A ratio of the brightness of the Debye-Scherrer diffraction ring by electron diffraction at a lattice plane spacing of 0.20+/−0.02 nm, comprising maghemite and magnetite, to the brightness of the Debye-Scherrer diffraction ring by electron diffraction at a lattice plane spacing of 0.25+/−0.02 nm, comprising maghemite, magnetite and haematite, is no more than 0.2. | 11-14-2013 |