| 摘要 |
<p>PURPOSE:To obtain the title composition consisting of a pigment, organic solvent, soluble resin, aliphatic dibasic acid ester and tributhoxyethylphosphate, capable of readily writing on a writing board and readily erasing written character, etc., and excellent also in erasing properties after passage of time. CONSTITUTION:The aimed composition consisting of (A) a pigment (preferably processed pigment whose surface is subjected to resin coating), preferably of 2-10wt.%, (B) an organic solvent (e.g., methanol), preferably of 72-85wt.%, (C) a resin (e.g., polyvinyl butylal) soluble in the solvent B, preferably of 2-10wt.%, (D) an aliphatic dibasic acid ester (e.g., dibutyl adipate) used as a releasing agent, preferably of 3-8wt.% and (E) tributoxyethylphosphate, preferably of 1-4wt.%.</p> |
