Abstract: The invention relates to novel mixed metal oxides of the formula AXO3 and to mixtures of such mixed metal oxides. The particle size of the inventive substances is preferably in the nanoscale region, i.e. well into the sub-?m range. The novel compounds can be used in particular for the detection of gases, in particular of incombustible gases such as CO2.

Abstract: Nano-sized delivery systems consisting of an inorganic nano particle moiety covalently bonded to at least one organic pro-perfume or pro-drug moiety are disclosed. The systems of the invention are able to deliver perfuming or pharmaceutical active ingredients. Other aspects of the present invention include the use of such systems in perfumery as well as the perfuming compositions or perfumed articles that incorporate these delivery systems.

Abstract: In a filtration device (1) comprising a pressure-resistant housing (2) with a liquid inlet opening (3) and an outlet opening (4) for filtered matter, into which a collecting channel (12) terminates, at least one filter element (8–11) designed as flat membrane is connected to the collecting channel (12) in a pressure-tight manner. This device provides a high liquid throughput at the same time having a compact construction.

Abstract: In a method for producing a porous ceramic compound, a green layer is disposed onto a previously sintered ceramic substrate and is sintered with the previously sintered substrate at temperatures between 500° C. and 1300° C., wherein the green layer comprises exclusively ceramic particles having a particle size of x?100 nm and the sintered green layer being a functional layer has a layer thickness of s?2.5 ?m. The functional layer produced in this method is flawless and fine-pored and therefore particularly suited for filtration processes.

Abstract: The invention relates to a process for producing a composite material which has properties permitting it to be used as what is known as a “photonic crystal”. The process is a template-based process. Moreover, the invention relates to the composite materials produced by the process and to the use of these materials.

Abstract: In methods for the production of nanoscale particles having a so-called core and at least one so-called shell, either nanoscale particles of an inorganic material having a particle size of <100 nm or nanoscale particles of a magnetic material having a particle size of <100 nm are used as the core. Either at least one metal is applied by radiation-induced redox reaction or at least one inorganic material is applied by means of a pH change brought about by at least one enzyme, as a shell, in solution or in suspension, to these particles forming the core. Accordingly, core/shell particles having a core of an inorganic material or a core of a magnetic material with a shell of a metal or a shell of an inorganic material are provided. These core/shell particles are distinguished in that they are present substantially, preferably completely, as nonagglomerated particles.

Abstract: The invention relates to a method for the production of ceramic coatings on metallic and/or ceramic surfaces, especially pipe walls and the linings of pipe wall in boilers, in order to protect coated surfaces from corrosion and adhesion problems, in addition to relating to coatings which can be produced according to said method. The ceramic coatings are characterised in that the coating contains boron nitride in order to form a low-energy surface, and ceramic nanoparticles as temperature-stable binding agents which, on account of their high specific powder surfaces, act as binders, or alternatively glass-type binder systems based on metal organyl compounds.

Abstract: In a filtration device (1) comprising a pressure-resistant housing (2) with a liquid inlet opening (3) and an outlet opening (4) for filtered matter, into which a collecting channel (12) terminates, at least one filter element (8-11) designed as flat membrane is connected to the collecting channel (12) in a pressure-tight manner. This device provides a high liquid throughput at the same time having a compact construction.

Abstract: The invention relates to a method for producing ceramic hollow fibers from nanoscale particles and to hollow fibers produced in such a manner. The inventive method is characterized in that the ceramic material has a solids content of >25% by volume, preferably >30% by volume and is processed by means of extrusion and spinning. The hollow fiber is sintered according to conventional sintering methods. A hollow fiber produced in this manner is used for metal, polymer and ceramic matrix reinforcements, for artificial organs, for microsystems technology components, for fiber optical waveguides, for ceramic membranes, for solid electrolyte in fuel cells (SOFC), for tissue engineering and for producing extremely light ceramic parts, such as heat shields or brake systems, that are subjected to temperature stresses. The inventive ceramic batch can also be processed by means of silk screening whereby resulting in the production of filigree structures over the ceramic silk screening.

Abstract: The present invention provides compositions containing transparent thermoplastic polymer, surface-modified oxide particles with a particle size of less than 200 nm, and organic NIR absorbers. The compositions of the present invention may find use in reducing diathermancy in sheets, films, glazing systems and roofing systems which may be incorporated into automobiles and buildings.

Abstract: The cosmetic agent contains from 0.01 to 10 percent by weight of at least one silane of formula RmSiX4-m, wherein m=0 to 4, R is a nonhydrolyzable organic group and X is a hydrolysable group, or a salt thereof. The method for improving the condition of hair, particularly in terms of protection, hardening, strengthening, sealing, restructuring, repairing, stabilizing, enhancing the luster, facilitating the combability and shortening the hair-drying time, includes bringing the aforesaid cosmetic agent into contact with the hair for a period of 10 seconds to 60 minutes at a temperature between 20° C. and 60° C.

Abstract: Nanoscale corundum powders are obtained by first producing an Al2O3 precursor by adding seed crystals to an aqueous solution of an aluminium compound and adding a base and then converting the Al2O3 precursor into corundum by calcination at a high temperature. Before the calcination, the salts that are present in addition to the Al2O3 precursor are separated off. The resulting product is calcined at temperatures of 700 to 975° C. and any fines that may be present are removed. The resulting corundum powders can be sintered at temperatures of ?1200° C. to produce compacts or components of multiple layer systems.

Abstract: A colloidal system of ceramic nanoparticles in a dispersion medium is characterized in that the nanoparticles dispersed in the dispersion medium are distributed by 90% or more portions as unimodal nanoparticles having the same particle size in the dispersion medium, wherein the particle size variation decreases from 50%, related to nanoparticles of 1 nm, to 10% for nanoparticles of 100 nm, and the atoms and/or ions located in the surface of the nanoparticles are saturated in terms of valence in dependence on the concentration of the nanoparticles in the dispersion medium using a surface modificator such that an energetic balance of the nanoparticles in the dispersion medium is obtained. The presented colloidal system is characterized by a great stability and keeps the unimodal/monomodal nanoparticles homogeneously distributed and suspended in the dispersion medium.

Abstract: The invention relates to nanoscale rutile or oxide powder that is obtained by producing amorphous TiO2 by mixing an alcoholic solution with a titanium alcoholate and with an aluminium alcohalate and adding water and acid. The amorphous, aluminum-containing TiO2 is isolated by removing the solvent, and is redispersed in water in the presence of a tin salt. Thermal or hydrothermal post-processing yields rutile or oxide that can be redispersed to primary particle size. The n-rutile or the obtained oxide having a primary particle size ranging between 5 and 20 nm can be incorporated into all organic matrices so that they remain transparent. Photocatalytic activity is suppressed by lattice doping with trivalent ions. If the amorphous precursor is redispersed in alcohol, or not isolated, but immediately crystallized, an anatase is obtained that can be redispersed to primary particle size.

Abstract: The invention concerns a method for producing porous ceramic layers on metallic, ceramic, enameled or glass substrates using crystalline nanoparticles of particle sizes of between 3 nm and 100 nm via a wet-chemical process and functionalising of this porous ceramic layer through introducing a second component into the pores of the porous ceramic layer which serves as carrier layer. The porous ceramic layers can be filled with hydrophobizing, hydrophilizing, dirt-repellent and corrosion-inhibiting substances which remain in the substrate or are supplied later on demand, or with bactericidal substances, aromatics, perfumes or inhalation substances which are delivered to the room air in precise doses.

Abstract: An antimicrobial polymeric coating system comprises core-shell particles, the core comprising nanoscale particles of an inorganic material having a particle size <100 nm and the shell being formed by at least one substance having an antimicrobial action. Of preferred possibility for use are core-shell particles having a titanium dioxide core and a copper or silver shell. This allows permanent protection against bacteria to be provided.

Abstract: An inorganic binder for the production of ceramic, glass ceramic and other mineral materials and composite materials comprises at least one inorganic compound having a mean particle size of <100 nm and at least one solvent. The inorganic compounds are preferably compounds selected from the group consisting of the chalcogenides, the carbides and/or the nitrides. Further preference is given to the mean particle size being <50 nm, in particular <25 nm. The solvent is, in particular, a polar solvent, especially water.

Abstract: This invention relates to adhesive compositions of which the binder system contains nanoscale particles with ferromagnetic, ferrimagnetic, superparamagnetic or piezoelectric properties. The invention also relates to dissolvable adhesive bonds and to a process for dissolving adhesive bonds.

Abstract: The invention concerns a method for producing a highly-porous ceramic layer and for application of this layer onto metallic, ceramic, enameled and/or glass substrates using porous, ceramic particles, preferably aluminum oxide, titanium oxide and zircon oxide, and an inorganic binder system. The inorganic binder system contains at least one ceramic nanoparticle of a particle size of less than 100 nm, preferably less than 50 nm and particularly preferred less than 25 nm, the solvent being water. Layers produced in this fashion are suited as self-cleaning catalytically active layers e.g. in ovens, in combustion engines etc. or for general coating of substances to considerably increase their specific surface e.g. for catalytic substrates.

Abstract: The invention concerns a method for producing porous ceramic layers on metallic, ceramic, enameled or glass substrates using crystalline nanoparticles of particle sizes of between 3 nm and 100 nm via a wet-chemical process and functionalising of this porous ceramic layer through introducing a second component into the pores of the porous ceramic layer which serves as carrier layer.