| 摘要 |
PROBLEM TO BE SOLVED: To provide an erasable ink composition which does not generate change in color tone and deterioration of handwriting concentration under high humidity conditions, capable of easily erasing handwritings immediately after writing down or after lapse of long time regardless of surface material of a white board, and to provide writing implements with built-in the same. SOLUTION: As a remover, (A) one or more compounds chosen from sulfuric ester or phosphoric ester of polyoxyalkylene alkyl ether or the like, or these salts, (B) aliphatic dibasic acid ester, (C) aliphatic monbasic acid ester and (D) polyalkylene glycol ester are compounded. |
