| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermochromic ink composition that has high functionality in which the color change can be shown freely at predetermined temperature in a wide temperature range, is excellent in stability when stored and when used, has high productivity in which raw material costs and production costs are reduced, and is human-body-friendly and environmentally friendly without containing hazardous metals such as mercury.SOLUTION: The liquid thermochromic ink composition contains: an iron triazole complex compound that changes its color reversibly at temperature to be detected when the temperature rises or drops, by showing thermochromism; a binder; and a solvent. |
