| 摘要 |
PROBLEM TO BE SOLVED: To obtain an oil based ink compsn. for a ballpoint-pen hardly causing faintness and patches at the first start in writing even after the long period storage. SOLUTION: This compsn. contains at least 10-45 wt.% colorant such as a dye or a pigment, 35-80 wt.% solvent such as a glycolic solvent, glycol ether solvent and alcoholic solvent, 5-50 wt.% resin, and 0.5-5 wt.% trimethylol tri-2- ethyl hexanoate. |
