| 摘要 |
<p>PURPOSE:The titled ink that is composed of an acid dye, a direct dye, an ethylene oxide adduct type cationic active agent, a water-soluble organic solvent, and water, thus showing high lubricity to prevent the friction between the ball and the chip and permit smooth writing. CONSTITUTION:The objective ink comprises (A) an acid dye and/or a direct dye, (B) an ethylene oxide adduct type cationic active agent, (C) a water-soluble organic solvent such as ethylene glycol or thioglycol and (D) water, wherein the amounts of A, B, C, and D are 0.5-30wt%, 0.5-10wt%, 1-40wt% and 50- 85wt% respectively based on the total amount of the ink.</p> |
