| 摘要 |
<p>PURPOSE:To obtain the subject printing ink with remarkably improved emulsion stability by incorporating dipentaerythritol polyacrylate with a water-soluble component ratio defined by a specified equation below a specified value. CONSTITUTION:The subject printing ink is obtd. by incorporating dipentaerythritol polyacrylate with a water-soluble component ratio defined by the following equation of 10 or smaller. Here, the water-soluble component ratio is obtd. by putting 5g of dipentaerythritol polyacrylate contg. 500ppm of p-mehoxy-phenol(MP), 10g of xylene and 15g of deionized water in a 50ml Nessler tube, shaking the tube at a shaking speed of 300 times/min for 1hr, allowing it to stand, separating a completely separated aq. component by chromatography and defining the water-soluble component ratio by the equation. Said printing ink exhibits remarkably improved emulsion stability and excellent printability.</p> |
