| 摘要 |
PURPOSE:To enhance the solubility and color developability of a black dye by forming a solvent by microencapsulating a color former and high purity 2,7-diisopropylnaphthalene. CONSTITUTION:A solvent is composed of a microcapsule enclosing a color former and a 2,7-diisopropylnaphthalene high purity product. When the high purity product of 2,7-diisopropylnaphthalene is used as the solvent, the purity thereof is desirably 100% but it is confirmed that 2,7-diisopropylnaphthalene having purity of 85% or more among diisopropylnaphthalene isomers has excellent capacity. |
