PHENOLSULFONIC ACID ARYL ESTER, DEVELOPING AGENT, AND HEAT-SENSITIVE RECORDING MATERIAL

摘要

The present invention provides a compound represented by the formula (1). The compound represented by the formula (1) is a developing agent superior in both color-developing sensitivity with low energy and image stability [in the following formula, wherein R 1 is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group,
R 2 in the number of m are each independently an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an alkoxy group, a halogen atom, a hydroxy group, a cyano group, a nitro group, a carboxy group or an amino group,
R 3 in the number of n are each independently an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an alkoxy group, a halogen atom, a hydroxy group, a cyano group, a nitro group, a carboxy group or an amino group, and
m and n are each independently an integer of 0 - 4.