| 摘要 |
PURPOSE:A writing board ink capable of being written clearly on a nonabsorbing board, e.g. synthetic resin, readily erasable with an eraser, comprising an ink containing a pigment, resin, and alcohol solvent, and ethanolamine as an eliminator. CONSTITUTION:An erasable ink comprising (A) a pigment which will not stain only by sticking, (B) a resin, (C) an alcohol solvent, e.g. isopropyl alcohol, (D) an eliminator, e.g. ethanolamine, particularly triethanolamine, and, if necessary (E) a spreading agent, and (F) an eliminator assistant, e.g. liquid paraffin. The ingredient (D) permits ready erasing of scripts with certainty and smooth sliding of the eraser. |
