| 摘要 |
<p>PURPOSE:To obtain the titled composition having excellent erasability and long-term stability, by dissolving a mixture of a specified colored polymer with a hydrophobic nonionic surface active agent, a hydrophilic nonionic surface active agent, an ampholytic surface active agent, a silicone oil, etc. in a volatile organic solvent. CONSTITUTION:A colored polymer (A) is obtained by dyeing with a basic dye a copolymer resin which is prepared by copolymerizing an ethylenically unsaturated sulfonic acid (salt) with another copolymerizable monomer, contains 0.1-60wt% sulfo groups or salt thereof, has a glass transition temperature of -20-150 deg.C, and is soluble in an organic solvent. 100pts.wt. component A is mixed with additives (B) comprising 5-100pts.wt. hydrophobic nonionic surface active agent (a), 5-100pts.wt. hydrophilic nonionic surface active agent (b) with a + b being 10-150pts.wt., 5-100pts.wt. ampholytic surface active agent (c), 0-20pts.wt. silicone oil (d), 0-50pts.wt. hardly volatile alcoholic solvent (e), and 10-150pts.wt. hardly volatile or non-volatile organic compound (f). This mixture is dissolved in a volatile organic solvent in an amount sufficient to provide a concentration of 4-50wt%.</p> |
