THERMAL RECORDING MATERIAL

摘要

PURPOSE:To obtain a thermal recording material excellent in image preservability and having good thermal response by containing a heat-meltable substance having an m.p. of 70-150 deg.C and a specific compound. CONSTITUTION:In a thermal recording material consisting of an aromatic isocyanate compound and an imino compound, a heat-meltable substance having an m.p. of 70-150 deg.C and a compound represented by formula I (wherein R is a hydrogen atom or an alkyl group and n is an integer of 1 or more) are contained. The heat-meltable substance having the m.p. of 70-150 deg.C is a com pound represented by formula II (wherein R' is an aralkyl group or an aryl group). By using both compounds in a mixed state, marked synergistic effect is developed in sensitizing effect as compared with a case using each of them alone.