摘要 |
PROBLEM TO BE SOLVED: To provide a water-soluble solid drawing material which has high strength, a coloring material of which is excellently dispersed and which provides a drawn line not causing color irregularity even if it is traced with water. SOLUTION: The water-soluble solid drawing material at least includes a coloring material, a sulfonic acid-modified polyvinyl acetate or a partially saponified substance of the sulfonic acid-modified polyvinyl acetate, and a fatty acid metal salt. In addition to the raw materials, a body material such as talc and a lubricant are blended. A suitable use amount of the sulfonic acid-modified polyvinyl acetate or the partially saponified substance of the sulfonic acid-modified polyvinyl acetate is in a range of 0.2-30 wt.% per the whole amount of the solid drawing material. COPYRIGHT: (C)2010,JPO&INPIT
|