| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject ink composition capable of suppressing a blur when opening the sentence, and facilitating smooth writing by adding a specific salt of an acidic polyoxyethylene alkyl ether phosphoric acid ester to the ink. SOLUTION: This composition is obtained by mixing (B) a morpholine or an alkylalkanolamine salt of an acidic polyoxyethylene alkyl ether phosphate of the formula [R is a 8-30C alkyl; M is morpholine or an alkanolamine; (n) is 1-20; (x) is 1 or 2] with (A) an oily ball-point pen ink comprising at least an organic solvent (preferably a mixed solvent of glycol monoaromatic ether solvent with an aromatic alcohol) and a coloring agent. The component B is obtained by neutralizing the acidic polyoxyethylene alkyl ether phosphate by the prescribed alkylalkanolamine or morpholine. Smooth condition of pen can be expected, even if the pen is left for a long time excluding the cap thereof. |
