| 摘要 |
<p>PURPOSE:To obtain aqueous pigment ink containing a pigment, anion-modified polyvinyl alcohol and water, hardly making crease or warpage on papers, etc., to be written after drying written ink, excellent in pigment dispersibility and stability and useful for India ink. CONSTITUTION:The objective ink consists essentially of (A) 1-30wt.% pigment such as azo pigment or titanium oxide, (B) 0.5-15wt.% anion-modified polyvinyl alcohol such as sulfone-modified anion type polyvinyl alcohol and (C) 50-95wt.% water, and as necessary, the ink is blended with a wetting agent, an antifreezing agent, a solvent, etc.</p> |
