| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-based ink for ballpoint pens in which the changes in the rate of ink discharged and the width of written lines are small, even if the writing distance is long. SOLUTION: Lauryl phosphoric acid is added to the water-based ink for ballpoint pens by using polyoxyethylene oleyl amine as a solubilizing agent. COPYRIGHT: (C)2006,JPO&NCIPI |
