Abstract:
This cold insulation tool is provided with a cold insulation composition containing water, an inorganic salt, a thickening agent, and a pH indicator, wherein: the cold insulation composition contains, as the inorganic salt, a phosphate and an acidic inorganic salt of which the aqueous solution exhibits acidity; in the cold insulation composition, the proportion of the total contained amount of the phosphate and the acidic inorganic salt with respect to the total contained amount of the inorganic salt is 5-100 mass%; the cold insulation composition contains, as the acidic inorganic salt, a dihydrogen phosphate and an inorganic salt other than the dihydrogen phosphate; pKa of the pH indicator is 4.9-8.0; in the cold insulation composition, pH (α1) obtained when all the contained components except for the phosphate, dihydrogen phosphate, and water are removed satisfies the relationship represented by formula (i) with respect to the pKa. pKa of pH indicator ≤ pH (α1) ≤ 1.8 + pKa of pH indicator ····(i)
Abstract:
A refrigerant pack is provided with a refrigerant substance containing water, a precipitating component, a non-precipitating component, and a pH indicator, and is configured such that the precipitating component precipitates when the refrigerant substance freezes and is a component not corresponding to the pH indicator, the non-precipitating component does not precipitate when the refrigerant substance freezes and is a component not corresponding to the pH indicator, a change or the presence/absence of coloring in the pH indicator is reflected before and after freezing, and the refrigerant substance changes in color.
Abstract:
PROBLEM TO BE SOLVED: To avoid an erroneous position relation of two heat accumulation agents to an article to be stored, when storing the article to be stored at a constant temperature by arranging the two heat accumulation agents in piles.SOLUTION: A constant-temperature storage appliance has two storage parts 21, 22 for storing heat accumulation agents. A heat accumulation agent 41 is stored in one storage part 21 so as not to be able to be taken out therefrom, and a hook-and-loop fastener 30 to be fitted to a storage container is provided on the outer surface of the other storage part 22.
Abstract:
PROBLEM TO BE SOLVED: To avoid an object to be cooled from being cooled too much by a cold insulation body, in a cold insulation implement using the cold insulation body which is coagulated at a predetermined temperature and cools the object to be cooled.SOLUTION: A cold insulation implement includes: a cold insulation agent 10 that is coagulated; and a cool storage agent 20 that is not coagulated; wherein the cool storage agent 20 is arranged on the side of an object to be cooled of the cold insulation agent 10, and the weight thereof is 25% or more of the weight of the cold insulation agent 10.
Abstract:
PROBLEM TO BE SOLVED: To provide a constant temperature holder for retaining a heat-retained object at a constant temperature, which avoids cooling the heat-retained object too much and shortening a duration of time during which the constant temperature is retained.SOLUTION: A constant temperature holder includes a heat reservoir 10 having the fusion point of 25°C or less and being in a solidification state, and a heat reservoir 20 having the solidification point of 13-25°C and not being in a solidification state. The heat reservoir 20 is arranged in a side of heat reservoir 10 closer to the heat-retained object. The weight of the heat reservoir 20 is 15% or more and 50% or less of the weight of the heat reservoir 10.
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling composition whose freezing state by cooling can be easily and visually recognized through discoloration.SOLUTION: A cooling composition comprises: a microcapsule that contains a first die; a second dye that is not contained in the microcapsule; and a refrigerant. The first and second dyes are different from each other in color. The first dye is a liquid crystal dye, wherein the color varies according to the change of a color of the microcapsule, which is based on temperature.