TEMPERATURE INDICATOR FOR WARMING PRODUCTS

摘要

A temperature indicator for the hot product is provided, which simply and rapidly detects the temperature of the hot product using the exothermic composition. A temperature indicator for the hot product comprises: an exothermic composition emitting the heat during the period which is the period limiting the heat-up cycle in activation; and a thermochromic composition which has a first color during heating cycle and has the second color after completion of the heating cycle. The thermochromic composition is changed at the temperature of 30-60 deg.C. The thermochromic composition comprises microcapsule containing the proton acceptance chromogen and the desensitizer.