Phenolsulfonic acid aryl ester derivative, and heat-sensitive recording material using same

摘要

The invention provides a phenolsulfonic acid aryl ester represented by formula (1);
wherein each symbol is as defined in the description. The phenolsulfonic acid aryl ester is useful as a developer to provide a thermal recording material with good color-developing sensitivity, image density when printed at a low application energy (i.e., high start-up sensitivity), and heat and plasticizer resistance. The invention also provides a thermal recording material using the developer.

主权项

1. A phenolsulfonic acid aryl ester represented by the following formula: wherein R1 and R2 are each independently an alkyl group having 1 to 8 carbon atoms; R3 is an alkyl group having 1 to 8 carbon atoms; R4 is an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, a cyano group, an aryl group having 6 to 14 carbon atoms or an aralkyl group having 7 to 15 carbon atoms; m is an integer of 0-3; and n is an integer of 0-4.