INK COMPOSITION FOR DECORATIVE MATERIAL, AND DECORATIVE MATERIAL

• Main Authors: YAMAZAKI YUTAKA, UEKI KATSUYUKI, SATO SATORU
• Format: Patent
• Language: English; Japanese
• Published: 27.05.2021
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; 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; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an ink composition for a decorative material which has durability such as excellent weather resistance and moist heat resistance in addition to excellent adhesion to a substrate, and to provide a decorative material manufacturing method.SOLUTION: The ink composition for a decorative material is used to constitute a pattern layer of a decorative material including a substrate, the pattern layer, and a surface protective layer in this order. The ink composition contains an acrylic polyol and a polyisocyanate. The acrylic polyol has a hydroxyl value of 10-120 mg KOH/g and a glass transition temperature of 30-70°C. A cured film obtained by forming a film composed of the ink composition and curing it has a storage modulus at 140°C of 1.0×105-1.0×109 Pa.SELECTED DRAWING: None 【課題】優れた基材密着性に加えて、優れた耐候性、耐湿熱性といった耐久性を兼ね備える化粧材用インキ組成物及び化粧材製造方法を提供すること。【解決手段】基材、絵柄層および表面保護層をこの順に有する化粧材の、絵柄層を構成するための化粧材用インキ組成物であって、前記インキ組成物は、アクリルポリオールおよびポリイソシアネートを含み、前記アクリルポリオールの水酸基価は、１０〜１２０ｍｇＫＯＨ／ｇ、かつ、ガラス転移温度は、３０〜７０℃であり、前記インキ組成物からなる皮膜を形成し、硬化させた後の硬化皮膜の、１４０℃における貯蔵弾性率が、１．０×１０５〜１．０×１０９Ｐａである、化粧材用インキ組成物。【選択図】なし