COMPOSITE POWDER AND METHOD FOR PRODUCING SAME

• Main Authors: GOUDA, Nanae, ASHIDA, Takuro
• Format: Patent
• Language: English; French; German
• Published: 19.07.2023
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMISTRY; DYES; HUMAN NECESSITIES; HYGIENE; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NANOTECHNOLOGY; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; PREPARATION OF CARBON BLACK; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

An object of the present invention is to provide a composite powder that is stable even if it is present in water for a long time. A composite powder, comprising: an inorganic powder; a first coating layer containing a water-repellent organic compound on the surface of the inorganic powder; and a second coating layer which contains at least one compound selected from the group consisting of silicon oxide, silicon oxide hydrate, aluminum oxide, and aluminum hydroxide, and which is formed on the first coating layer.