Abstract:
PROBLEM TO BE SOLVED: To provide a covered substrate with electromagnetic shielding characteristics which ensures shielding of electromagnetic radiation, can be manufactured at low cost and simplifies covering of space, and to provide a method for manufacturing the same.SOLUTION: A method for covering a substrate includes the steps of: a) preparing a substrate; b) applying a composition containing an inorganic compound and a conductive substance at least on one face of the substrate; c) drying the composition which has been applied in the step b); d) applying at least one covering containing silane, oxide particles and an initiator at least one face of the substrate to which the composition has been applied in the step b); and e) drying the covering which has been applied in the step d). The covered substrate is also provided.
Abstract:
PROBLEM TO BE SOLVED: To make obtainable a distribution as narrow as possible of particle characteristics such as primary particle grain size, aggregate grain size, the number of primary particles per aggregate, specific surface area, and the like by introducing a reaction mixture into a reaction chamber through at least one molding with a channel penetrating in the flow direction. SOLUTION: A starting gas mixture comprising air, hydrogen, a volatile metal and a metalloid compound, e.g. silicon tetrachloride is introduced into a supply pipe 6 similar to a wind tunnel from a mixing chamber, and it is made to communicate with a molding 7, around which an annular suction inlets for air and hydrogen are provided. The molding 7 is a member of a burner designed as a sealed burner. That is, the air introduced from the side of the molding 7 is not sucked but is metered and introduced by a metering device. In order to create a uniform flow condition, a burner flame is introduced into a pipe 8, and then a silicon dioxide generated thereafter can be guided further into a reaction chamber 9.
Abstract:
Mixed oxide powder containing indium and tin, with a proportion of indium oxide of between 90 and 98 wt.% and a BET surface area of 40 to 120 m²/g, which is in the form of aggregates having an average circumference of less than 500 nm, consists of at least 95% of an indium oxide phase and displays an oxygen content that is lower than the content that theoretically results from In2O3 and SnO2. It is produced by mixing a solution of an indium compound with a solution of a tin compound, atomising this mixture of solutions, pyrolysing the atomised mixture of solutions in a first zone of a reactor and in a second zone of the reactor, following pyrolysis, adding reducing gases to the pyrolysed mixture at one or more points in a quantity such that overall a reducing atmosphere is established in this second zone, and separating the resulting solid from the waste gases in a further, third zone, in which a reducing atmosphere likewise still prevails. It can be used for the production of transparent, electroconductive paints and coatings.
Abstract:
The present invention relates to a process for coating substrates, comprising the steps: a) providing a substrate, b) applying a composition to at least one side of the substrate, the composition containing one inorganic compound containing at least one metal and/or semi-metal and an element selected from the group Te, Se, S, O, Sb, As, P, N, C, Ga, c) drying the composition applied in step b), d) applying at least one coating to the at least one side of the substrate, the coating containing a silane, oxide particles selected from the oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce, and an initiator, e) drying the coating applied in step d), f) applying at least one further coating to the at least one side of the substrate, the further coating containing a silane, an antimicrobial and/or biocidal substance, selected from substances containing Zn, Zn salts, Zr, Ag, Ag salts, Ag complexes, Sn, Sn-compounds, and an initiator, and g) drying the further coating applied in step f). The invention also relates to a coated substrate obtained in this way.
Abstract:
Production of particles coated with titanium dioxide comprises continuously feeding a mixture of finely divided titanium dioxide and jet particles through a flame of a reactor with the aid of conveying air; and sintering the titanium dioxide onto the surfaces of the particles at 600-1200 degrees C for 0.1-5 seconds. An Independent claim is also included for a process for increasing the adhesion between a metal structure and blended materials in dentures. Preferred Features: The mixture is blown into an annular flame operated using fuel gas using conveying air at a velocity of 1-50 m/s. The jet particles consist of ceramic, glass or metal as base material, preferably aluminum oxide. The particles have a diameter of 1-500, preferably 20-250 micro m. The titanium dioxide particles have a diameter of 0.001-10, preferably 0.01-0.1 micro m. The mixture contains (in wt.%) 0.1-30, preferably 1-5 titanium dioxide, and 70-99.9, preferably 95-99 jet particles.
Abstract:
The synthesis of a solid comprises feeding a reaction mixture as a whole or in steps through one or more molded bodies having through channels in the streaming direction. Independent claims are included for: (1) a pyrogenic product in which the primary particle size distribution has a standard deviation of approximately 1.4; and (2) an apparatus for conducting the synthesis comprising a mixing chamber, a reaction space, a reaction mixture feed line, and a burner (1) in which one or more molded bodies (5) with through channels are arranged in the reaction mixture feed line to the burner.