| 摘要 |
<p>PURPOSE:To provide the titled solvent outstanding in dryability, capable of affording ink with proper fluidity, consisting of specific petroleum hydrocarbon with dynamic viscosity, viscosity index and naphthene content equal to or higher than respective specified values and aromatic fraction content and pour point equal to or lower than respective specified levels. CONSTITUTION:The objective solvent consisting of a petroleum hydrocarbon having the following characteristics; 1, dynamic viscosity at 40 deg.C, 0.5-500cst 2, viscosity index >=60, 3, naphthene fraction content >=30wt.%, 4, aromatic fraction content <=2wt.%, 5, pour point <=-20 deg.C, 6, total acid value pref. <=0.1 mgKOH/g.</p> |
