ACRYLIC RESIN EMULSION FOR WATER-BASED INKJET INKS, AND WATER-BASED INKJET INK COMPOSITION PRODUCED USING SAME

• Main Authors: INOUE TOSHIMITSU, MATSUMOTO AKIHISA, KANDA TAIJI
• Format: Patent
• Language: English; French; German
• Published: 31.08.2016
• 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 an aqueous inkjet ink composition excellent in glossiness and other ink properties and imparted with a higher viscosity without the use of a tackifier, an acrylic resin emulsion for an aqueous inkjet ink is provided, which contains a particulate acrylic resin having an acid value of 1 to 100 mgKOH/g, wherein an acid-group-containing monomer is present at a content mole ratio (As) in surface regions of particles of the particulate acrylic resin and present at a content mole ratio (At) in the overall acrylic resin particles as measured with a 1 H spin diffusion time of 5 ms, and a ratio (As/At) of the content mole ratio (As) to the content mole ratio (At) is not less than 9.