| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a marking ink composition for writing boards characterized in that it can be written on writing boards, the handwriting written on the boards can be readily erased, it is excellent in suppressing whitening of the handwriting, and bits of eraser debris cannot be easily scattered when it is erased . <P>SOLUTION: The marking ink composition for writing boards comprises at least a pigment, lower alcohol, polyvinyl butyral, and a release agent, which contains 0.01 to 3.0 wt.% hydroxypropyl cellulose. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
