ULTRAVIOLET-CURABLE WATER-BASED INK, DISPERSION, ULTRAVIOLET-CURABLE WATER-BASED COMPOSITION AND PRINTED MATTER

• Main Authors: SAKATANI Shuhei, KASAI Kengo, KARASAWA Tamae, INABA Keisuke, NAKAGAWA Tomoko
• Format: Patent
• Language: English; French; German
• Published: 28.02.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Provided is a UV-curable water-based ink excellent in coating film performance, especially scratch resistance, and further also excellent in substrate versatility. The UV-curable water-based ink includes at least a UV-curable oligomer, a colorant, and a water-soluble polyfunctional (meth)acrylamide compound, in which the UV-curable oligomer has a structural unit derived from a water-soluble compound and a structural unit derived from a compound containing two or more polymerizable unsaturated bonds. Alternatively, the UV-curable water-based ink is configured such that the UV-curable oligomer has a structural unit derived from a compound containing four or more polymerizable unsaturated bonds and capable of bonding with a polyisocyanate compound (A), or the UV-curable water-based ink is configured such that the UV-curable oligomer has a structural unit derived from a compound represented by the following formula (1).(In formula (1), X is an alkylene group, Y is a (meth)acryloyl group, an allyl group, or an acyl group, and n is an integer of 2 or more.)