CERAMIC MATERIALS FROM SILAZANE POLYMERS

CERAMIC MATERIALS FROM SILAZANE POLYMERS A method is disclosed for increasing the ceramic yield of a ceramic material obtained by firing a R3SiNHcontaining silazane polymer to an elevated temperature in an inert atmosphere or in a vacuum. The method involves adding certain boron compounds to the R3S...

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Bibliographische Detailangaben
1. Verfasser:	BUJALSKI, DUANE R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	CERAMIC MATERIALS FROM SILAZANE POLYMERS A method is disclosed for increasing the ceramic yield of a ceramic material obtained by firing a R3SiNHcontaining silazane polymer to an elevated temperature in an inert atmosphere or in a vacuum. The method involves adding certain boron compounds to the R3SiNH-containing silazane polymer prior to firing. Suitable boron compounds include, among others, metaboric acid, orthoboric acid, and organoboron compounds of the general formula BR? where R" is selected from the group consisting of alkyl radicals containing 1 to 5 carbon atoms, phenyl radicals, and -OR''' radicals where R''' is an alkyl radical containing 1 to 4 carbon atoms.