ANTICORROSIVE COATING METHOD

• Main Authors: MATSUDA HIDEKI, OTA REMI, TSUCHIOKA IKURO
• Format: Patent
• Language: English; Japanese
• Published: 25.07.2019
• 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 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; 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; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NATURAL RESINS; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an anticorrosive coating method by which anticorrosion property can be exhibited even if a water-based paint is used under severe corrosive environment.SOLUTION: An anticorrosive coating method includes: a process (1) in which an aqueous primer paint (I) having anticorrosion property is coated onto a metal system base material surface, thereby forming a primer coating film; and a process (2) in which a top coat paint (II), which contains a glass flake of 3 to 25% by mass in a paint non-volatile component, is coated onto the coating film, thereby providing a top coat film having a dry film thickness of 100 μm or more. In the method, the aqueous primer paint (I) contains an amino group-containing resin emulsion (A), an epoxy group-containing resin emulsion (B) and a rust-proofing pigment component (C). Further, a coated body is provided.SELECTED DRAWING: None 【課題】厳しい腐食環境下において水性塗料を用いても防食性を発揮することができる防食塗装方法を提案する。【解決手段】金属系基材面に、防食性を有する水性下塗り塗料（Ｉ）を塗装して下塗塗膜を形成する工程（１）、該塗膜上に、塗料不揮発分中にガラスフレークを３〜２５質量％含有する上塗り塗料（ＩＩ）を塗装して乾燥膜厚が１００μｍ以上の上塗塗膜を設ける工程（２）を含む防食塗装方法において、水性下塗り塗料（Ｉ）が、アミノ基含有樹脂エマルション（Ａ）、エポキシ基含有樹脂エマルション（Ｂ）及び防錆顔料成分（Ｃ）を含む、防食塗装方法、塗装体。【選択図】なし