| 摘要 |
<p>PURPOSE:To obtain an aqueous ink of little foaming, capable of giving written images of outstanding water and light resistances and color tone, useful for marking pen, fountain pen, etc., by combined use of, as the dye component, both C.I. Direct Black 154 and C.I. Acid Red 289 in specified proportion. CONSTITUTION:The objective ink (an be obtained by combined use of, as the dye component C.I. Direct Black 154 and C.I. Acid Red 289 in a weight ratio 2.5-10. In addition, for the purpose of making the color tone more prefectly black, other acid dye and/or direct dye (e.g., Direct Yellow 86, Acid Black 2) may be incorporated.</p> |
