| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid drawing material capable of being wiped off directly after the drawing and excellent in safety. SOLUTION: This solid drawing material contains a salt of an 8-36C aliphatic carboxylic acid as a gel-forming substance, 5-45 wt.% coloring agent having 0.1-20μm mean particle diameter, 2-30 wt.% erasability-imparting agent and 20-60 wt.% water. COPYRIGHT: (C)2003,JPO
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