INK SET AND DECORATIVE MATERIAL

• Main Authors: YAMAZAKI YUTAKA, UEKI KATSUYUKI, SATO SATORU
• Format: Patent
• Language: English; Japanese
• Published: 11.07.2019
• 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 set for forming a printing layer of a decorative material having excellent moist-heat resistance, light resistance and laminate strength which has good temporal stability of ink and printability such as plate fogging, blocking resistance. and the like.SOLUTION: An ink set for forming a printing layer in a decorative material having a base material, a printing layer and a resin layer in this order contains ink and an isocyanate-based curing agent, and satisfies the following (1) to (3): (1) the ink contains a polyurethane resin having a weight average molecular weight of 10,000 to 100,000 and an organic solvent; (2) the polyurethane resin has a hydroxyl value of 1-40 mgKOH/g and/or an amine value of 1-20 mgKOH/g; and (3) a mass ratio (polyurethane resin/isocyanate-based curing agent) of the polyurethane resin to an isocyanate-based curing agent is 99/1 to 60/40.SELECTED DRAWING: None 【課題】優れた耐湿熱性、耐光性、ラミネート強度を兼ね備えた化粧材の印刷層を形成するための、インキの経時安定性と、版かぶりや耐ブロッキング性等の印刷適性が良好なインキセットを提供すること。【解決手段】基材、印刷層および樹脂層をこの順に有する化粧材における印刷層を形成するための、インキとイソシアネート系硬化剤からなるインキセットであって、以下（１）〜（３）を満たすことを特徴とするインキセット。（１）インキは、重量平均分子量が１００００〜１０００００であるポリウレタン樹脂および有機溶剤を含有する。（２）前記ポリウレタン樹脂は、水酸基価が１〜４０ｍｇＫＯＨ／ｇおよび／またはアミン価が１〜２０ｍｇＫＯＨ／ｇである。（３）前記ポリウレタン樹脂と前記イソシアネート系硬化剤との質量比（ポリウレタン樹脂／イソシアネート系硬化剤）は、９９／１〜６０／４０である。【選択図】なし