CERAMIC POWDER AND METHOD OF USING THE SAME

• Main Authors: NISHI YASUHISA, IWASA MITSUYOSHI
• Format: Patent
• Language: English
• Published: 22.01.2009
• Subjects: ADHESIVES; ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS THEREOF; CONCRETE; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; REFRACTORIES; SEMICONDUCTOR DEVICES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A ceramic powder that is used in a semiconductor sealing material, etc. and that is mixed into a rubber or resin, etc. to prepare a composition excelling in heat resistance and flame retardancy. The ceramic powder has a multipeaked frequency particle size distribution having at least two peaks in the particle size measured by a laser diffraction scattering particle size distribution meter, wherein the maximum particle diameter of a first peak is in the range of 40 to 80 mum and the maximum particle diameter of a second peak in the range of 3 to 8 mum, and wherein the ratio of particles of 20 to below 40 mum is 20 mass% or less (including 0%).