| abstract |
(57) [Summary] [Structure] An alkylene oxide adduct of polyglycerin, an alkylene oxide adduct of glycerin in which 1 to 150 mol of alkylene oxide is added to glycerin, and an alkylene oxide adduct of trimethylolpropane are selected. An aqueous ink composition for a ball-point pen, which comprises at least one alkylene oxide adduct of a polyhydric alcohol, a colorant, a thickener, and water. [Effect] When used for a ball-point pen, it provides good lubricity with less bleeding of handwriting, less wear of the ball seat due to rotation of the ball, maintains proper ink outflow, and gives a smooth writing feeling. Further, since the ink is suppressed from being dried at the pen tip, it is less likely to be scratched. |