Abstract: Materials from the group consisting of a) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, in combination with one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates, wherein hybrid material and inorganic sol are crosslinked, b) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, c) one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates and d) one or more polyamides, polyimides and/or epox

Abstract: A method for producing a glass-like protective layer on an optionally pre-coated metal or glass substrate. The method comprises: (a) mixing one or more defined silicon compounds with NaOH and KOH, (b) adding water to the mixture obtained in (a) to hydrolyze the silicon compound(s), (c) adding at least one defined compound of formula MYm, where M is Pb, Ti, Zr, Al or B, to the hydrolyzed mixture obtained in (b), wherein the molar ratio M/Si is from 0.01/1 to 0.04/1, to obtain a coating sol, (d) applying the coating sol obtained in (c) to the substrate, and (e) thermal densification of the coating sol applied in d) at a temperature of from 300° C. to 500° C. to form the glass-like protective layer.

Abstract: The invention relates to the use of a coating of a layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a layer including an inorganic-organic hybrid matrix or of a double layer of a base layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a base layer including an inorganic-organic hybrid matrix and an alkali silicate-free and alkaline earth silicate-free top layer including a matrix of an oxidated silicon compound as the anti-limescale coating on at least one metal surface or inorganic surface of an object or material. The anti-limescale coating can be used for storage or transport devices for water or media containing water. The anti-limescale coating is suitable for pipelines, sand control systems or safety valves in the conveyance of oil or gas or the storage of oil or gas.

Abstract: Materials from the group consisting of a) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, in combination with one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates, wherein hybrid material and inorganic sol are crosslinked, b) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, c) one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates and d) one or more polyamides, polyimides and/or ep

Abstract: The invention relates to the use of a coating of a layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a layer including an inorganic-organic hybrid matrix or of a double layer of a base layer including an inorganic, glass-like matrix of an alkali silicate and/or alkaline earth silicate or a base layer including an inorganic-organic hybrid matrix and an alkali silicate-free and alkaline earth silicate-free top layer including a matrix of an oxidated silicon compound as the anti-limescale coating on at least one metal surface or inorganic surface of an object or material. The anti-limescale coating can be used for storage or transport devices for water or media containing water. The anti-limescale coating is suitable for pipelines, sand control systems or safety valves in the conveyance of oil or gas or the storage of oil or gas.

Abstract: Metallic substrates having a deformable vitreous coating, obtainable by applying an alkali metal silicate-containing coating sol to the substrate and thermally densifying the layer thus obtained in a two-stage heat treatment process, the heat treatment being carried out, in the first stage, either (A) in an oxygen-containing atmosphere or (B) in a vacuum at a residual pressure of ?15 mbar and, in the second stage, in a low-oxygen atmosphere up to full densification with formation of a vitreous layer.

Abstract: A coating which provides corrosion resistance, wear resistance, and, optionally, lubrication, for deposition on a threaded article is disclosed. The coating comprises a polymer matrix, such as a polyimide, which is modified with small amounts of a fluorine containing polymer modifier, as well as other compounds or additives to improve performance of the coating. Additionally, the coating can further comprise a solid lubricant or an anticorrosion compound dispersed within the polymer matrix.

Abstract: Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer. Also present in the coating compositions are corrosion inhibiting agents and inorganic particles having a mean diameter of between approximately 10 nm and 10 ?m. Solid lubricants, which may include at least one of PTFE, HDPE, Graphite, and MoS2, are optionally added to provide the first coating with a low coefficient of friction. The coating systems may further comprise a second coating composition, comprising a solid lubricant dispersed within an epoxy resin and a solvent. The first and second coating compositions are deposited on at least a portion of at least one of the pin and box members of the threaded connections.

Abstract: A consolidation agent for molded articles and geological formations from porous or particulate materials, containing a hydrolysate or precondensate of (a) at least one organosilane of the general formula (I) RnSiX4-n??(I) in which the radicals R are identical or different and are not hydrolytically removable groups, the radicals X are identical or different and are hydrolytically removable groups or hydroxyl groups, and n is 1, 2 or 3, and optionally (b) at least one hydrolyzable silane of the general formula (II) SiX4??(II) in which the radicals X have the meaning defined above.

Abstract: Described is a consolidant comprising a hydrolyzate or precondensate of at least one organosilane and at least one metal compound, where the molar ratio of silicon compounds to metal compounds is in the range of from 10 000:1 to 10:1. The consolidant can be used for the hydrolysis-stable consolidation of porous or particulate materials to form moldings. The consolidant can be used for the hydrolysis-stable coating of substrates.

Abstract: A process for the preparation of hydrolytically and hydrothermally stable consolidated proppants is described, in which (A) a consolidating agent comprising (A1) a hydrolysate or precondensate of at least one functionalized organosilane, a further hydrolyzable silane and at least one metal compound, the molar ratio of silicon compounds used to metal compounds used being in the range of 10 000:1 to 10:1, and (A2) an organic crosslinking agent are mixed with a proppant and (B) the consolidating agent is cured at elevated pressure and elevated temperature. The consolidated proppants obtained have high mechanical strength.

Abstract: A process for the preparation of a cement material for cementing. The process comprises adding to a cement material comprising cement and water a precondensate of at least one hydrolysable organosilane and, optionally, (nanoscale) particles.

Abstract: A substrate having an anti-adhesive coating thereon. The coating is made from a coating composition comprising solid particles of a release agent different from boron nitride and a binder comprising surface-modified nanoscale solid particles.

Abstract: A process for a consolidation which is hydrolytically stable under hydrothermal conditions and/or for changing the wetting behavior of a porous and/or particulate geological formation. The process comprises introducing into the geological formation a consolidant and curing the introduced consolidant under elevated pressure and elevated temperature. The consolidant comprises a hydrolyzate and/or a precondensate based on silanes and metal compounds.

Abstract: A process for the preparation of hydrolytically and hydrothermally stable consolidated proppants is described, in which (A) a consolidating agent comprising (A1) a hydrolysate or precondensate of at least one functionalized organosilane, a further hydrolyzable silane and at least one metal compound, the molar ratio of silicon compounds used to metal compounds used being in the range of 10 000:1 to 10:1, and (A2) an organic crosslinking agent are mixed with a proppant and (B) the consolidating agent is cured at elevated pressure and elevated temperature. The consolidated proppants obtained have high mechanical strength.

Abstract: A process for a consolidation which is hydrolytically stable under hydrothermal conditions and/or for changing the wetting behavior of a porous and/or particulate geological formation. The process comprises introducing into the geological formation a consolidant and curing the introduced consolidant under elevated pressure and elevated temperature. The consolidant comprises a hydrolyzate and/or a precondensate based on silanes and metal compounds.

Abstract: A method for producing a ceramic coating of metallic and/or ceramic surfaces and products in reactors, process plants and combustion plants includes applying a mixture of fine-particle boron nitride, at least one inorganic binding agent of medium particle size in the nanometer range, containing substantially Al2O3, AlO(OH), ZrO2, Y—ZrO2, TiO2, Fe2O3 and/or SnO2 or an associated precursor compound and at least one solvent and/or water onto a metallic and/or ceramic surfaces or product, and burning the applied mixture into a coating through heating.

Abstract: Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer. Also present in the coating compositions are corrosion inhibiting agents and inorganic particles having a mean diameter of between approximately 10 nm and 10 ?m. Solid lubricants, which may include at least one of PTFE, HDPE, Graphite, and MoS2, are optionally added to provide the first coating with a low coefficient of friction. The coating systems may further comprise a second coating composition, comprising a solid lubricant dispersed within an epoxy resin and a solvent. The first and second coating compositions are deposited on at least a portion of at least one of the pin and box members of the threaded connections.

Abstract: Described is a consolidant comprising a hydrolyzate or precondensate of at least one organosilane and at least one metal compound, where the molar ratio of silicon compounds to metal compounds is in the range of from 10 000:1 to 10:1. The consolidant can be used for the hydrolysis-stable consolidation of porous or particulate materials to form moldings. The consolidant can be used for the hydrolysis-stable coating of substrates.

Abstract: Metallic substrates having a deformable vitreous coating, obtainable by applying an alkali metal silicate-containing coating sol to the substrate and thermally densifying the layer thus obtained in a two-stage heat treatment process, the heat treatment being carried out, in the first stage, either (A) in an oxygen-containing atmosphere or (B) in a vacuum at a residual pressure of ?15 mbar and, in the second stage, in a low-oxygen atmosphere up to full densification with formation of a vitreous layer.