| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a penetrating and drying type printing ink realizing the use of a non-aromatic-based petroleum solvent showing less pollution of a working environment and excellent wetting property of a carbon black, and also excellent in flowing property, transportability, drying property, and stability on a machine by making a petroleum-based solvent having an inferior resin solubility and a high aniline point usable, and simultaneously using an aliphatic hydrocarbon resin extracted from a plant oil and a gilsonite, and having 120-125 deg.C softening point as a one component of a vehicle resin. SOLUTION: This printing ink consists of 10-30 wt.% carbon black, 0.5-20 wt.% gilsonite resin having 120-125 deg.C softening point, 5-30 wt.% synthetic resin, 10-40 wt.% non-aromatic-based petroleum solvent having 90-110 deg.C aniline point and 10-50 wt.% plant oil. It is desirable that the printing ink is a penetrating and drying type ink.</p> |
