| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an oil-based ink composition for a ball point pen and especially an oil-based ink composition for a ball point pen that does not have a heavy writing feeling, does not become blurred and the ink does not leak even when leaving it face down for a long period of time.SOLUTION: At least a coloring agent, an organic solvent and a carbodiimide group-containing compound are contained.</p> |
