| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a marking ink composition for writing board, suppressing occurrence of so-called ghost phenomenon in which a releasing agent for imparting erasing property after erasing handwriting remains, in the marking ink composition for writing board in which it can be drawn on a writing board and the handwriting written on the board can be readily erased. <P>SOLUTION: In the marking ink composition for writing board comprising at least a pigment, a lower alcohol, a polyvinyl butyral and a releasing agent, silicon dioxide particles are included. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
