| 摘要 |
<p>PURPOSE:To provide a water ink which exhibits excellent solubility for dyes and forms handwriting having excellent water resistance, by blending a salt between an acid dye (or a direct dye) and a cationic active agent, an activator, a water-soluble org. solvent and water together. CONSTITUTION:0.5-15wt% acid (or direct) dye (A) [e.g. Aizen Eosine GH (CI 45380) or Water Black #100L (CI 35255)], 0.1-20wt% cationic active agent (B) (e.g. Catiogen L, a product of Daiichi kogyo seiyaku K.K.), 1-30wt% ethylene oxide addition type activator (C) (e.g. Newcol 1515, a product of Nippon Nyukazai K.K.), 1-40wt% water-soluble org. solvent (D) (e.g. ethylene glycol) and 40- 85wt% water are blended together.</p> |
