pH pH-SENSITIVE WATER-BASED INK COMPOSITION FOR GRAVURE PRINTING AND FLEXO PRINTING

摘要

In the present invention, water-soluble resins, pH indicators, organic acids, silane-based compounds, binders, solvents and water-soluble rubbers, including arabic rubber and tragacanth rubber as water-soluble rubber, toluene, xylene, cyclohexanone, methylethyl Aqueous type ink that excludes the use of organic solvents such as hydrocarbon-based, ketone-based, acetate-based and chlorine-based compounds including ketone (MEK), methyl isobutyl ketone (MIBK) and the like, and suitable drying speed for gravure printing or flexographic printing. It provides a pH-sensitive aqueous ink composition for gravure printing or flexographic printing, having a viscosity, adhesion, and can grasp the pH change.