| 摘要 |
<p>PURPOSE:To make it possible to form a record which does not spread even on plain paper and has excellent quality and good penetrability by mixing a water-soluble dye, a water-soluble organic solvent, water, and a specific mixed solvent. CONSTITUTION:0.1-1.5wt.% water-soluble dye is mixed with a water-soluble organic solvent (e.g. glycerin), 40-95wt.% water and 0.5-20wt.% mixed solvent obtained by mixing a compound of formula I or II (wherein R1 is alkyl or aryl unsubstituted or substituted by a group selected from the group consisting of hydroxyl, carboxyl, sulfone, amino and acetylamino; and R2-4 are each alkyl or hydroxyalkyl, any one of which may be H) with a compound of formula III (wherein R5-6 are each H, alkyl, hydroxyalkyl; and R7 is carboxyl, hydroxyl, sulfone, alkyl or H) in a weight ratio of (9:1)-(1:9).</p> |
