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Temperature history display material and temperature history display method and apparatus using the process as well as the temperature history display material
Temperature history display material and temperature history display method and apparatus using the process as well as the temperature history display material
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机译：温度历史显示材料以及使用该过程的温度历史显示方法和装置以及温度历史显示材料
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摘要
PROBLEM TO BE SOLVED: To make simply displayable the hysteresis of the preservation temperature of a product by making a coloring component composed of at least an electron-donating dye and an electron-accepting compound, a decolorizing component composed of at least a decolorizer, heating the decolorizing component to be a doughnut shape or a pattern shape, and starting a decolorizing operation. ;SOLUTION: A coloring component is composed mainly of an electron-donating dye and an electron-accepting compound. In is desirable that the component is composed by using the heating and coloring reaction of both or the reaction of both with a solvent. On the other hand, it is desirable that a decolorizing component is composed of a material having (A) a function which decolorizes the coloring component in a coloring state and (B) a function which keeps a supercooled liquid state even after a heating operation is cut off when it is heated once up to a molten state which freezes a structure while it is held at the glass transition temperature or lower of a supercooled substance and which repeats the supercooled liquid state when it is held at the glass transition temperature or higher of the supercooled substance. By this temperature-hysteresis display material, the hysteresis of the temperature of a product can be judged directly, easily and mechanically or visually.;COPYRIGHT: (C)2000,JPO
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