COLORANT DISPERSION, INK, INK SET, AND PRINTED MATERIAL

• Main Authors: OTSUKI EMI, TAKAHASHI MASATOSHI, YOSHIZAWA TOSHIHIRO, TEZUKA TOSHIHIRO, SUGIHARA MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 21.02.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a colorant dispersion that allows for high-density printing and enables the fabrication of inkjet ink with high storage stability.SOLUTION: A colorant dispersion comprises a dispersant, a colorant, and water. The dispersant comprises a polymer with a maleic anhydride-modified unit, a cyano group-containing monomer unit, and a hydrophobic monomer unit. The hydrophobic monomer unit is at least one selected from the group consisting of an aromatic ring-containing monomer unit and an aliphatic hydrocarbon group-containing monomer unit.SELECTED DRAWING: None 【課題】本発明は、高い濃度の印刷が可能であり、良好な保存安定性を有するインクジェットインキを作製できる着色剤分散体を提供することを目的とする。【解決手段】分散剤、着色剤、および水を含む着色剤分散体であって、前記分散剤が、無水マレイン酸変性単位、シアノ基含有モノマー単位、および疎水性モノマー単位を含有する重合体であり、前記疎水性モノマー単位が、芳香環含有モノマー単位、および脂肪族炭化水素基含有モノマー単位からなる群より選択される１種以上である、着色剤分散体【選択図】なし