Patent
Thermal recording material
TLDR
In this paper, a 2,2-bis(4-substd- sulfonyl oxyphenyl)propane is incorporated in a thermal recording material using a color reaction of a color forming dye with a color developer.Abstract:
PURPOSE:To improve a color forming density, a color forming sensitivity, a heat response, and a shelf stability and to eliminate a fogging by incorporating a specific 2,2-bispropane in a sensitizer contained in a thermal recording material using a color reaction of a color forming dye with a color developer CONSTITUTION:In a thermal recording material using a color reaction of a color forming dye with a color developer, as a sensitizer a 2,2-bis(4-substd- sulfonyl oxyphenyl)propane shown by a formula (where, two Rs independently represent phenyl or tolyl) is incorporated In this manner, a color forming density, a color forming sensitivity, and a heat response are enhanced, a fog is eliminated, and a shelf stability is also improved As a dye for the thermal recording material, normally a leuco compound is preferably used, but any dye having no possibility of adversely affecting the thermal recording material may be used On the other hand, a color developer for use is not particularly limited, but normally a phenol compound, a thiophenol compound, a thiourea compound, an organic acid, its metallic salt, and others may be usedread more
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