METHOD FOR REMOVING SOLID POLLUTANT WITH HYDROPHILIC GROUP ADHERING TO SURFACE OF COMPOSITE MATERIAL AND FATTY ACID-BASED OIL

PROBLEM TO BE SOLVED: To provide a method for using a composite material having photocatalytic coating not lowering performance for wash-removing solid pollutants with a hydrophilic group of fatty acid-based oil and the like. SOLUTION: The method removes solid pollutants having a hydrophilic group o...

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Bibliographische Detailangaben
Hauptverfasser:	KOJO RYUICHI, HAYAKAWA MAKOTO, KETAYAMA MASAYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CANDLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING CLEANING IN GENERAL CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL FATTY ACIDS THEREFROM INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREVENTION OF FOULING IN GENERAL PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING SPRAYING OR ATOMISING IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for using a composite material having photocatalytic coating not lowering performance for wash-removing solid pollutants with a hydrophilic group of fatty acid-based oil and the like. SOLUTION: The method removes solid pollutants having a hydrophilic group of fatty acid-based oil and the like adhering to the surface of a composite material which have becomes hydrophilic by a method wherein a photocatalistic layer is formed on the surface of a substrate and the photocatalysts are photoexcited. In this case, the method includes a step of washing the surface of the composite material, and a step of replacing a carbonyl group derived from the fatty acid remained in the washing step for adsorbed water by photoexciting the photocatalysts by the photocatalytic action. Thereby, the solid pollutants having the hydrophilic group of the fatty acid-based oil and the like adhering to the surface of the composite material can be removed.