A thermosensitive recording sheet comprising a support and a thermosensitive color developer layer thereon containing a basic leuco dye and an organic color developer, said layer containing a bis-phenyl sulfone compound selected from bis-(3-phenyl-4-hydroxyphenyl)sulfone and bis-(2-methyl-4-hydroxy-5-cyclohexylphenyl)sulfone as the organic color developer.
Novel urea (thiourea) derivative and thermal recording sheet using same
申请人:NIPPON PAPER INDUSTRIES CO., LTD.
公开号:EP0699662B1
公开(公告)日:1998-10-21
Thermochromic Dental Material
申请人:Brown William Steven
公开号:US20140004071A1
公开(公告)日:2014-01-02
The present invention includes a thermochromic dental material comprising a polymeric dental composition; and a temperature sensitive thermochromic dye in contact with the polymeric dental composition, wherein the temperature sensitive thermochromic dye is colorless at body temperature and undergoes a reversible color change at a temperature of between 99-160° F.