TEMPERATURE HISTORY AND MOISTURE DEPOSITION HISTORY INDICATOR COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a temperature history and moisture deposition history indicator composition used for an indicator for accurately detecting both a temperature history and a moisture deposition history clearly by a irreversible change in the tone of color.;SOLUTION: In the temperature history and moisture deposition history indicator composition, a granular or powder-like thermally melted substance having a melt point corresponding to temperature to be detected, and a coloring matter having a diffusion property to the granular or powder-like, thermally melted substance, and the granular or powder-like coloring matter that is dispersive to water are contained.;COPYRIGHT: (C)2005,JPO&NCIPI