AQUEOUS SILICA DISPERSION WITH LONG SHELF LIFE FOR FIRE-RESISTANT GLASS

The invention relates to aqueous silica dispersion with a pH in the range from 8 to 14, comprising a base chosen from the group consisting of alkali metal hydroxides, (akyl)ammonium hydroxides or a mixture thereof, at least 35% by weight of silica particles surface-treated with an amino-organosilane...

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Bibliographische Detailangaben
Hauptverfasser:	BERGMANN, Gabriele, COSTA, Fulvio, HENTSCHEL, Corinna, CORNELIUS, Maximilian
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOUNDS THEREOF DYES GLASS INORGANIC CHEMISTRY JOINING GLASS TO GLASS OR OTHER MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS PAINTS PERFORMING OPERATIONS POLISHES PREPARATION OF CARBON BLACK SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	The invention relates to aqueous silica dispersion with a pH in the range from 8 to 14, comprising a base chosen from the group consisting of alkali metal hydroxides, (akyl)ammonium hydroxides or a mixture thereof, at least 35% by weight of silica particles surface-treated with an amino-organosilane (I) and/or a product of hydrolysis of compound of formula (I), 3% to 35 % by weight of at least one polyol, 20% to 60 % by weight of water, preparation of such dispersion and the use thereof in fire-resistant glass. L'invention concerne une dispersion aqueuse de silice présentant un pH dans la plage de 8 à 14, comprenant une base choisie dans le groupe constitué par les hydroxydes de métal alcalin, les hydroxydes d'(alkyl)ammonium ou un mélange correspondant, au moins 35 % en poids de particules de silice traitées en surface par un amino-organosilane (I) et/ou un produit d'hydrolyse du composé de formule (I), 3 % à 35 % en poids d'au moins un polyol, 20 % à 60 % en poids d'eau, la préparation d'une telle dispersion et l'utilisation correspondante dans du verre résistant au feu.