AQUEOUS ANTI-RUSTING COATING, LAMINATE STRUCTURE AND APPLICATION METHOD THEREOF

• Main Authors: YAMAUCHI HIDEKI, ADACHI SOTARO
• Format: Patent
• Language: English; Japanese
• Published: 17.05.2022
• 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; 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; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an aqueous anti-rusting coating having excellent anti-rusting effect and adhesion with an upper layer material, because an aqueous anti-rusting coating of the present disclosure has excellent finishing of a coating film formed after coating, even if the coating film is exposed for a long time, the coating film is alkaline, dense, and soft.SOLUTION: An aqueous anti-rusting coating containing three components of a synthetic resin emulsion having a glass transition point of 0°C or lower, calcium hydroxide, magnesium hydroxide and magnesium oxide, in which since a solid content of the aqueous anti-rusting coating is in the range of 60 to 80%, the pH is 8 or higher, the specific gravity ranges from 1.0 to 1.8, a ratio of the solid content of the synthetic resin emulsion and three components ranges from 1:1 to 1:5, and an average particle size of the three components is 80 μm or smaller, the finishing of the coating film formed after the aqueous anti-rusting coating is coated is excellent, even when the coating film is exposed for a long time, the coating film is alkaline, dense, and soft, therefore the anti-rusting effect and adhesion with an upper layer material become excellent.SELECTED DRAWING: None 【課題】本開示の水性防錆塗料は、塗布した後に形成された塗膜の仕上がりが良好で、塗膜を長期間暴露した場合であっても塗膜がアルカリ性で、緻密で、柔らかいものであるため、その防錆効果や上層材との付着性が良好である水性防錆塗料を提供する。【解決手段】ガラス転移点が０℃以下の合成樹脂エマルションと、水酸化カルシウム，水酸化マグネシウム，酸化マグネシウムの３成分を含む水性防錆塗料であって、この水性防錆塗料の固形分が６０～８０％の範囲で、ｐＨが８以上で、比重が１．０～１．８の範囲であり、合成樹脂エマルションの固形分と３成分の比率が１：１～１：５の範囲であり、３成分の平均粒子径が８０μｍ以下であることにより、水性防錆塗料を塗布した後に形成された塗膜の仕上がりが良好で、塗膜を長期間暴露した場合であっても塗膜がアルカリ性で、緻密で、柔らかいものであるため、その防錆効果や上層材との付着性が良好なものである。【選択図】なし