| 摘要 |
<p>PURPOSE:To obtain the title monoazolake pigment consisting of a monoazolake pigment and free resin acid for treating the surface of the pigment, enhanced in transparency, vivid properties and dispersibility as well as surface tension of ink and having excellent printability such as flowability of ink. CONSTITUTION:The aimed monoazolake pigment obtained by adding (B) 3-30wt.% (as solid content of resin acid based on dye pigment) resin acid alkali salt solution to a monoazolake pigment obtained by subjecting (i) a soluble group-containing aromatic amine (e.g., 1-amino-4-methyl-benzene-2-sulfonic acid) to coupling and laking with (ii) beta-naphthols or beta-oxynaphthoic acids, improved in lipophilic properties as well as flowability and enhanced in apparent surface tension of ink.</p> |
