Abstract: A process for subsequent surface modification of finely structured structures formed from hard inorganic materials, and the structures obtainable by this process as such. The structure has, in at least one spatial direction, a material thickness M of not more than 1000 nm and as an overall structure having, in at least one spatial direction, a measurement which is at least 5 times the material thickness M. The process includes treating the structures with an organic liquid under supercritical conditions.

Abstract: The invention relates to a process for producing an organically modified aerogel, comprising the steps of a) reacting at least one soluble salt of an acidic or amphoteric oxygen-containing molecular anion with at least one acid to give a hydrogel, b) modifying the hydrogel with a mixture comprising a silylating agent having at least one organic radical and a nonpolar solvent, c) subcritically drying the organically modified gel, wherein the process does not comprise a step between step a) and step b) for exchange of the solvent and/or for removal of salts and the process is performed in the absence of alcohol. Additionally disclosed is the use of the organically modified aerogel obtained as a heat- or sound-insulating material, as a catalyst support, gas storage means or as an adsorbent.

Abstract: The present invention relates to a process for subsequent surface modification of finely structured structures formed from hard inorganic materials, and to the structures obtainable by this process as such.

Abstract: The invention relates to a process for producing a hydrogel, which is performed in a reactor which has a body A which rotates about an axis of rotation and a metering system. A component comprising at least i) a soluble salt of an acidic or amphoteric oxygen-containing molecular anion and ii) a component comprising a precipitant are applied with the aid of the metering system to the surface of the rotating body A, such that a mixture of components i) and ii) flows over the surface of the rotating body A to an outer region of the surface of the rotating body A, the mixture leaves the surface and the pH of the mixture after leaving the surface of the body A is between 2 and 12. Additionally disclosed is the use of the resulting hydrogels for production of aerogels.

Abstract: The invention relates to a method for removing water from a mixture containing at least one compound having at least one group reactive towards isocyanate and containing water, the mixture being applied to the surface of a rotating body A, the mixture flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and water evaporating from the mixture. In particular, this method is suitable for removing water from alcohols and amines.

Abstract: The invention relates to a process for preparing multimetal cyanide compounds by reacting the aqueous solution of a metal salt a) with the aqueous solution of a hexacyanometalate compound b), wherein the mixture of the solutions a) and b) flows over the surface of a rotating body A to an outer region of the surface of the rotating body A and is flung off from there.

Abstract: The proposed spinning disc reactor comprises substantially a horizontally rotatable, disc-like and thermostatable support element which has an outer reaction surface, feed means for feeding at least one reactant onto the reaction surface and internal structures for thermostating the reaction surface. In addition, it contains at least one separation apparatus for collecting and removing the reaction product from the reaction surface. The support element is characterized in particular in that it consists of two components a) and b) arranged horizontally one on top of the other and having substantially identical surface measures. These two components are connected to one another in an interlocking manner and tightly during the operating time and the lower component a) has, on its top facing the inner region of the support element, at least one substantially uninterrupted groove milled in over an extensive area and intended for receiving, conducting and discharging a heat-transfer fluid.

Abstract: The invention relates to a process for the preparation of copolymers containing acid monomer structural units and polyether macromonomer structural units, which is carried out in a continuous mode of operation in a reactor which has ?) a body B rotating about an axis of rotation and having a reaction surface, ?) a metering system and ?) a device for irradiating the reaction surface, i) the components of a starting reaction composition being applied individually and/or as a mixture with the aid of the metering system in a thin film on an inner region of the reaction surface of the rotating body B so that the thin film flows over the reaction surface of the rotating body B to an outer region of the reaction surface of the rotating body B, the thin film on the reaction surface being electromagnetically irradiated by means of the device for the irradiation of the reaction surface, ii) the thin film leaving the reaction surface as a reaction composition which has copolymer containing acid monomer structural uni

Abstract: The invention relates to a process for the preparation of silylated polyurethanes and/or polyureas, comprising the steps: a) application of a component ?) containing isocyanate and of a component ?) containing polyol and/or polyamine to at least one surface of body A, which surface rotates about an axis of rotation and has a temperature between 60 and 400° C., and b) reaction of the reaction product of ?) isocyanate and ?) polyol and/or polyamine with a silylating agent.

Abstract: The invention relates to a process for the preparation of metal nanoparticles, selected from the group consisting of lead, bismuth, zinc, antimony, indium, gold, nickel, cobalt, palladium, platinum, iridium, osmium, rhodium, ruthenium, rhenium, vanadium, chromium, manganese, niobium, molybdenum, tungsten, tantalum, cadmium, silver and/or copper, on a rotating body, characterized in that a reduction of corresponding metal salts, corresponding metal salt complexes, corresponding metal hydroxides and/or corresponding metal oxides by polyols having a number of hydroxyl groups in the polyol of 1 to 10 and a molecular weight of the polyols of 2000 to 18 000 Da is effected.

Abstract: The present invention relates to a method for removing isocyanate from a reaction product of isocyanate with compounds reactive towards isocyanates, the reaction product being applied to the surface of a rotating body A, the reaction product flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and isocyanate which was used for the preparation of the reaction product and has not reacted evaporating from the mixture in the process.

Abstract: The invention relates to a method for removing water from a mixture containing at least one compound having at least one group reactive towards isocyanate and containing water, the mixture being applied to the surface of a rotating body A, the mixture flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and water evaporating from the mixture. In particular, this method is suitable for removing water from alcohols and amines.