GLASS ARTICLE

• Main Authors: KODAIRA HIROKAZU, MORITA SHINPEI, YONEDA TAKASHIGE
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: ADHESIVES; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; GLASS; INKS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MINERAL OR SLAG WOOL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a glass article having a coating film excellent in durability, particularly excellent in alkali resistance.SOLUTION: A glass article has a glass substrate and a coating film formed on a surface of at least a part of the glass substrate. The coating film comprises (c1) an ultraviolet absorber, (c2) an infrared absorber and a chelate agent. The chelate agent is a polymer produced by using one or more kinds selected from maleic acid, acrylic acid and methacrylic acid as a monomer. When performing a wear test of 1,000 revolutions by a CS-10F wear wheel on the surface of the coating film in accordance with JIS R3212 (1998), the increment of a haze value after the test based on the haze value before the test is 5% or less. A film thickness of the coating film is 1.0 μm to 7.0 μm and when being immersed in 0.1 N sodium hydroxide aqueous solution at 23°C for 2 hours, the decrement of the film thickness after immersion based on the film thickness before immersion is 0.5 μm or less.SELECTED DRAWING: None 【課題】耐久性、特には耐アルカリ性に優れる被膜を有するガラス物品を提供する。【解決手段】ガラス基材と、前記ガラス基材の少なくとも一部の表面に形成された被膜と、を有し、前記被膜は、紫外線吸収剤（ｃ１）、赤外線吸収剤（ｃ２）及びキレート剤を含有し、前記キレート剤は、マレイン酸、アクリル酸及びメタクリル酸から選択される１種以上を単量体として得られる重合体であり、前記被膜の表面に対してＪＩＳ Ｒ３２１２（１９９８年）によるＣＳ−１０Ｆ摩耗ホイールでの１０００回転摩耗試験を行ったときの、試験前に対する試験後の曇価の増加量が５％以下であり、前記被膜の膜厚が１．０μｍ〜７．０μｍであり、２３℃、０．１Ｎの水酸化ナトリウム水溶液に２時間浸漬したときに、前記浸漬前に対する浸漬後の前記被膜の膜厚の減少量が０．５μｍ以下である、ガラス物品。【選択図】なし