Phenolsulfonic acid aryl ester, developing agent, and heat-sensitive recording material
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United States of America Patent
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Jul 7, 2015
Grant Date -
Oct 23, 2014
app pub date -
Oct 31, 2012
filing date -
Oct 31, 2011
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Abstract
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 R1 is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group,
- R2 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,R3 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, andm and n are each independently an integer of 0-4.
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