| 摘要 |
PURPOSE:To provide a heat-sensitive recording body enhanced in stability of a colored image against a plasticizer, by incorporating a polyamine-sulfone into a heat-sensitive layer consisting of a color forming substance, a sulfonyldiphenol compound and a binder. CONSTITUTION:A system consisting of a colorless or light-colored color forming substance and a binder, etc. and a system consisting of 100-500wt% (based on the amount of the color forming substance) of a sulfonyldiphenol compound (e.g., 4,4'-sulfonyldiphenol), a binder and 5-50wt% (based on the amount of the sulfonyldiphenol compound) of a polyamine-sulfone containing repeating units of the formula (where each of R1, R2 is H, allyl, 1-16C alkyl or the like), etc. are separately pulverized in an aqueous medium containing a binder and are mixed with each other to obtain a heat-sensitive coating material. The coating material is applied on or impregnated into a substrate and is dried. |
