ORGANIC COATING HOT-DIPPED ALUMINUM COATED STEEL SHEET

• Main Authors: TOMOSUE TAKAO, DEGUCHI TAKENORI, YOKOGAWA MASATOSHI, KATAYAMA KIICHIRO, IKITA TAKAO
• Format: Patent
• Language: English
• Published: 17.05.1986
• Subjects: ADHESIVES; 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; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

PURPOSE:To improve corrosion resistance, roll formability of steel sheet, by coating a specified resin film directly on hot-dipped aluminum steel sheet or through chromate film. CONSTITUTION:Resin of the following compsn. is coated directly or through chromate film on the surface of hot-dipped aluminum steel sheet. Namely, 1-95wt% one or >=2 kinds among monomers exhibited by a general formula (1) of methyl (meth)acrylate, 3-20wt% alpha, beta unsaturated carboxylic acid monomer of acrylic acid, methacrylic acid, etc., and 0.1-50wt% monomer such as styrene copolymerizable with said polymer are mixed so that total thereof becomes 100wt% and emulsion polymerized. Resin film treating liquid in which silane coupling agent or titanate coupling agent and chromate, silica sol are added to the obtd. copolymer resin having 10-200 acid value per solid part, is coated to the surface. Corrosion resistance, roll formability, adhesive property during coating of steel sheet are improved.