| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ink composition which does not absorb moisture and not become dry by itself, does not change properties of a rubber stamp made of a natural rubber and a photosensitive resin stamp, is easy to remove when it is stuck on a stamp face and further can be easily replenished. SOLUTION: An ink composition comprises a polyoxyethylene oxypropylenetriol represented by the formula, a colorant, and a styrene-acrylic acid-α-methylstyrene copolymer. It is desirable that the composition futher comprises one or more substances selected from among an acrylic resin powder, an aqueous acrylic resin solution, an acrylic resin colloidal dispersion, an acrylic resin emulsion, and an extender pigment.</p> |
