| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an aqueous ink composition containing a coloring material, a polyesterpolyol resin and water as essential components, excellent in drying resistance at pen tips, not generating such a blur as that in a conventional aqueous ink, and useful for writing tools, recorders, ink jet printing, etc. SOLUTION: This aqueous ink composition contains (A) a coloring material such as an acidic dyestuff, a direct dyestuff, an organic pigment or an inorganic pigment, (B) a polyesterpolyol resin such as a dryness-preventing agent, and (C) water as essential components. The component B is preferably contained in an amount of 0.01-5wt.% based on the whole amount of the composition. The composition, if necessary, contains a solvent such as a glycolic solvent or glycerol, an antiseptic agent, an antifungal agent, etc., in addition to the components A, B and C.</p> |
