| 摘要 |
<p>PROBLEM TO BE SOLVED: To produce a marking pen ink for a writing board which is prevented from drying up at a pen tip for a long time and can be easily wiped off with cloth, or the like, after it is used for writing on a writing board. SOLUTION: This ink at least contains a lower aliphatic alcohol as a solvent, a pigment, a resin soluble in the solvent, a disaccharide fatty acid ester having 1-3 substituents, and a sorbitan ester nonionic surfactant and/or a saturated fatty acid triglyceride.</p> |
