| 摘要 |
PURPOSE:To provide a liquid composition containing a leuco dye and a sulfonated normal paraffin and giving a heat-sensitive recording sheet having excellent storage stability and free from coating unevenness. CONSTITUTION:The objective composition contains a colorless or lightcolored leuco dye (a color-developing compound) (e.g. rhodamine-beta-anilinolactam) and a sulfonated normal paraffin (preferably composed mainly of monosulfonic acid salt of 15C or 13C paraffin and having a molecular weight of 250-420). |
