ACTIVE ENERGY RAY-CURABLE LITHOGRAPHIC PRINTING INK, AND PRINTED MATTER

An active energy ray-curable lithographic printing ink comprising a rosin-modified resin (A), an active energy ray-curable compound (B), a photopolymerization initiator (C), and an extender pigment (D), whereinthe active energy ray-curable compound (B) includes dipentaerythritol hexaacrylate (B1), a...

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Hauptverfasser: NISHIMURA, Yoshie, NONAMI, Hirotada, OHNO, Takamoto, FUKUSHIMA, Akeha, KUGE, Hiroyuki, HANADA, Tomohiro
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:An active energy ray-curable lithographic printing ink comprising a rosin-modified resin (A), an active energy ray-curable compound (B), a photopolymerization initiator (C), and an extender pigment (D), whereinthe active energy ray-curable compound (B) includes dipentaerythritol hexaacrylate (B1), and an amount of the dipentaerythritol hexaacrylate (B1) relative to a total mass of the active energy ray-curable lithographic printing ink is within a range from 20 to 37% by mass,the photopolymerization initiator (C) includes at least two types of compounds selected from the group consisting of acylphosphine oxide-based compounds (C1), thioxanthone-based compounds (C2), and oxime ester-based compounds (C3),an amount of the extender pigment (D) relative to a total mass of the active energy ray-curable lithographic printing ink is within a range from 0.1 to 10% by mass, anda viscosity of the ink at 25°C is within a range from 10 to 120 Pa s.