| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a marking ink composition for a writing board which can be suitably used for writing on a writing board and whose handwriting is easily erasable, wherein the handwriting is easily erasable, irrespective of the period after writing. <P>SOLUTION: The ink composition contains a pigment, a lower alcohol, a resin soluble in the organic solvent and, as an erasability adding agent, a silicone powder such as a silicone resin powder, a silicone rubber powder and a silicone complex powder each surface treated with silicon dioxide. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
