| 摘要 |
PURPOSE:an oil ink having good stability without corroding metals, comprising a dye base, a phosphate of a polyoxyethylene alkyl phenyl ether, and an organic solvent. CONSTITUTION:(A) A dye base, e.g. Auramine Base(C.I. 41000B) or Victoria Blue 4R Base(C.I. 42563B), and (B) one or two or more types of phosphates of a polyoxyethylene alkyl phenyl ether or polyoxyethylene alkyl ether as a color former and solubilizer of (A) are dissolved in (C) an organic solvent, e.g. hexane or dibutylene glycol. Preferably, the amount of (A) is 1-30 wt.% based on the total ink, and the weight ratio of (A) to (B) is 2:1-1:20. |
