| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an erasable aqueous ink enabling to form a written line (a coated film) not erasable by scratching with fingers but erasable (by an eraser) without hurting paper. <P>SOLUTION: The erasable aqueous ink composition comprises a colorant, an aqueous emulsion of a resin with a lump coagulation property and an aqueous emulsion of an acrylic resin, and the said aqueous emulsion of resins with the lump coagulation property is an aqueous emulsion of a styrene butadiene rubber wherein the colorant of 0.1-20 wt.% to the total weight of the aqueous ink composition, the styrene butadiene rubber aqueous emulsion of 5-50 wt.% of solid content and the acrylic resin aqueous emulsion of 5-50 wt.% of solid content are contained. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
