| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an eraser-erasable water-based ink composition which is used for writing and satisfies such a handwriting-holding property that handwritings written on paper can easily be erased with an eraser without leaving a color but is not erased in a usual finger-rubbing treatment or a usual paper-mutually rubbing treatment, and to provide a writing tool having the ink composition therein. <P>SOLUTION: This eraser-erasable water-based ink composition for writing contains adhesive colored resin particles which comprise an adhesive resin and a pigment, have an adhesive property in at least one portion of particle surfaces, and contain the particles in an amount of ≥70 wt.% in a particle size distribution range of 2 to 20 μm, or colored resin particles and adhesive resin particles in an amount of ≥70 wt.% in a particle size distribution range of 2 to 20 μm, or a pigment and a resin having a film-forming temperature of ≤0° C or a glass transition temperature of ≤0°C, a shear-reducing viscosity- imparting agent and a specific antioxidant, and the writing tool having the ink composition therein. <P>COPYRIGHT: (C)2003,JPO |
