| 摘要 |
<p>PURPOSE:The titled opaque ink, prepared by dissolving a film-forming resin and a colorant in a mixed solvent of a low-boiling solvent which is a good solvent for the resin with a high-boiling solvent which is a non-solvent for the resin, and adding a small amount of a resin soluble in the high-boiling solvent thereto. CONSTITUTION:An ink prepared by dissolving (A) a film-forming resin, e.g. cellulose nitrate, and (B) a colorant, e.g. a basic water-insoluble basic dye, in a mixed solvent of a low-boiling solvent, e.g. ethyl acetate, which is a good for the component (A) with a high-boiling solvent, e.g. n-butanol, which is a non-solvent for the component (A), adding a resin soluble in the ink solvent composition and the high-boiling solvent, e.g. vinyl acetate resin, thereto. The amounts of the components are preferably as follows based on the ink solvent composition: 1- 6% component (A), 0.5-5% component (B) and 0.1-1% component (C) respectively. EFFECT:No clogging of the point of a brush due to no separation of the ink composition.</p> |
