| 摘要 |
<p>PURPOSE:To obtain the subject compsn. which has such an excellent lubricity as to reduce the abrasion of a ball holder, and is excellent in durability and feeling during writing. CONSTITUTION:The objective water-base ink compsn. contains a water-sol. dye or a water-dispersible pigment, a water-sol. org. solvent, water, and at least one compd. selected from the group consisting of a keto acid and its deriv., alkali salt, amine salt, and alkanolamine salt.</p> |
