REFRIGERANT PACK

• Main Authors: UCHINO Aya, TANAKA Yasuhiro
• Format: Patent
• Language: English
• Published: 27.04.2018
• Subjects: ADHESIVES; BLASTING; CHEMISTRY; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; DYES; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRIGERATION OR COOLING; REFRIGERATORS; WEAPONS

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)