COATING FLUID AND CLEAR-COATED STEEL SHEET

• Main Authors: ASHITACHI HAJIME, NAKAGISHI TETSUYUKI, FUKUDA TAIZO, KIYA TOSHIO
• Format: Patent
• Language: English
• Published: 07.08.2008
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PREPARATION OF CARBON BLACK; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a coating fluid for forming a non-chromium type clear film which meets basic properties as a film and blocking resistance and a clear-coated steel sheet on which a clear film is formed. SOLUTION: The coating fluid for non-chromium type clear-coating comprises an acrylic emulsion resin, silica, a zirconium compound, and dibutyl diglycol, the remaining being water, wherein the glass transition temperature of the acrylic emulsion resin is not lower than 0°C. Further, when the mass of the acrylic emulsion resin based on the solid content is taken as a, the mass of the silica based on the solid content is taken as b, the mass of the zirconium compound in terms of ZrO2based on the solid content is taken as c, and the mass of the dibutyl diglycol based on the solid content is taken as d, the mass ratio b/a is set at 0.01 or more, the mass ratio c/a is set at 0.005-0.5, and the mass ratio d/a is set at 0.05-0.5. COPYRIGHT: (C)2008,JPO&INPIT