FLUORORESIN POWDER COATING COMPOSITION AND ARTICLE HAVING COATING FILM

• Main Authors: YAMAUCHI, MASARU, MASUDA, SHO, UNOKI, MASAO
• Format: Patent
• Language: English; French; Japanese
• Published: 31.07.2003
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

A composition which can give a coating film having improved impact resistance while retaining the exceedingly high weatherability and gloss inherent in fluororesin powder coating materials. The fluororesin powder coating composition is characterized by comprising 100 parts by weight of a fluororesin and 0.1 to 10 parts by weight of the following particles (C). The particles (C) are particles of a core-shell structure having an average particle diameter of 0.01 to 2.5 microm, wherein at least either of the core and the shell comprises a fluoropolymer. L'invention concerne une composition pouvant constituer un film de revêtement possédant une résistance aux chocs améliorée tout en conservant une résistance aux intempéries élevée et le brillant inhérent aux poudres de revêtement à base de poudre de fluororésine. Ladite composition de revêtement à base de poudre de fluororésine se caractérise en ce qu'elle comprend 100 partie en poids d'une fluororésine et 0,1 à 10 parties en poids des particules suivantes (C). Les particules (C) sont des particules d'une structure à noyau-enveloppe possédant un diamètre de particule moyen de 0,01 à 2,5 mu m, le noyau ou l'enveloppe comprenant un fluoropolymèe.