Thin photocatalytic film and articles provided with the same

• Main Author: ISHIKAWA TAKAO,OOISHI TOMOJI,KAMOTO DAIGOROU
• Format: Patent
• Language: English
• Published: 03.05.2006
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; THEIR RELEVANT APPARATUS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

A thin photocatalytic film for use in air flow passages, filtration sections, exterior sections, and sections exposed to light from a built-in illumination machanism in electric appliances employed mainly in a room. It has an enhanced catalytic activity by virtue of addition of various additives. This film can decompose organic matter upon exposure to even a weak light, including one generally obtained in a room, such as the one from a fluorescent lamp, an incandescent lamp, a mercury lamp, or sunlight through a windowpane, and can decompose stains such as nicotine of cigarettes or sebum of, e.g., hands, even when deposited thereon, to offer an antifouling effect. Similarly, in the presence of a very weak light, this film can decompose various substances causative of an offensive odor dispersed in air, such as organic amines and mercaptans, even when deposited thereon, into substances emitting no significant odor or odorless substances, thus offering an deodorant effect of reducing the odor in a room.