PRINTING INK COMPOSITION FOR LAMINATE FOR SOFT PACKAGING

• Main Authors: HARADA JUNICHI, NAMITO YOICHI, OGAWA TORU, TAKIMOTO KYOHEI
• Format: Patent
• Language: English; Japanese
• Published: 03.06.2021
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a printing ink composition for laminate for soft packing which can contribute to global warming prevention and environmental load reduction, and exhibits various physical properties such as excellent blocking resistance and laminate suitability even when being used in soft packaging.SOLUTION: A printing ink composition for laminate for soft packing contains a pigment, a binder resin and an organic solvent. The binder resin contains a polyurethane resin, the polyurethane resin contains a biomass polyurethane resin and contains at least either a primary amino group or a secondary amino group in the terminal. A content of the biomass polyurethane resin is 10-100 mass% in the polyurethane resin. The biomass polyurethane resin contains a biomass polyurethane resin obtained by reacting a biopolyol component and an isocyanate component. The biopolyol component contains biopolyester polyol obtained by reacting a plant-derived short chain diol component having 2 to 4 carbon atoms and a plant-derived carboxylic acid component. The carboxylic acid component contains a sebacic acid and a succinic acid. A ratio of the sebacic acid to the succinic acid is 10/90 to 90/10.SELECTED DRAWING: None 【課題】地球温暖化防止や環境負荷低減に貢献でき、軟包装に用いられる場合であっても優れた耐ブロッキング性、ラミネート適性などの諸物性を示す軟包装用ラミネート用印刷インキ組成物を提供する。【解決手段】顔料と、バインダー樹脂と、有機溶剤とを含み、バインダー樹脂は、ポリウレタン樹脂を含み、ポリウレタン樹脂は、バイオマスポリウレタン樹脂を含み、かつ、末端に第１級アミノ基または第２級アミノ基の少なくともいずれか一方を含み、バイオマスポリウレタン樹脂の含有量は、ポリウレタン樹脂中、１０〜１００質量％であり、バイオマスポリウレタン樹脂は、バイオポリオール成分と、イソシアネート成分とを反応させたバイオマスポリウレタン樹脂を含み、バイオポリオール成分は、植物由来の炭素数が２〜４の短鎖ジオール成分と、植物由来のカルボン酸成分とを反応させたバイオポリエステルポリオールを含み、カルボン酸成分は、セバシン酸とコハク酸とを含み、セバシン酸／コハク酸＝１０／９０〜９０／１０である、軟包装用ラミネート用印刷インキ組成物。【選択図】なし