Process for the production of porous inorganic/organic mouldings

Inorganic/organic plastics in the form of porous to foam-like mouldings, in particular having densities of 10 to 800 kg/m and compressive strengths of 0.1 to 150 kp/cm are prepared. These mouldings, which may of course also contain fillers and reinforcing materials, can be used for a variety of appl...

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Bibliographische Detailangaben
Hauptverfasser:	DIETER DIETRICH, PETER MARKUSCH, PETER SCHOBER
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPARATUS SPECIALLY ADAPTED THEREFOR ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTROGRAPHY GENERAL PROCESSES OF COMPOUNDING HOLOGRAPHY LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS THEREFOR METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE WORKING-UP
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Beschreibung
Zusammenfassung:	Inorganic/organic plastics in the form of porous to foam-like mouldings, in particular having densities of 10 to 800 kg/m and compressive strengths of 0.1 to 150 kp/cm are prepared. These mouldings, which may of course also contain fillers and reinforcing materials, can be used for a variety of applications in the construction industry, it being possible for the properties to be matched to requirements in broad limits by simply changing the mixing ratios of the reaction components. The mouldings are obtained by reacting a mixture of (1) from 2 to 95% of aqueous silica sol which preferably contains from 20 to 60% by weight of silica, (2) from 5 to 98% of organic polyisocyanate with the exception of polyisocyanate prepolymers containing nonionic hydrophilic groups, and (3) from 0 to 93% of water-binding aggregates, with pore formation. The percentages are % by weight and relate to the total mixture. Additives such as catalysts, blowing agents, emulsification auxiliaries and other substances which are reactive with NCO groups are possible.