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US 12,551,367 B2Granted
Temperature control agent, and heating composition, packaging material, and warming material each comprising same
AssigneeFerric Inc.
InventorsEiji Miyashita, Shoichi Tsuji, Hirokazu Miyashita, Masayoshi Ikezawa
Life of this patent
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Abstract
A means for controlling the temperature of a warming material includes an air-permeable film or the like. The warming material includes the temperature control means and a heating composition. The temperature control means for controlling the heating temperature of the warming material includes one or more aliphatic compounds that have a melting point of 35-65° C. and a solubility in water (g/100 mL) at 20° C. of 5 or less.
Claims27
A heat-generating composition, comprising:
- a temperature control agent and a mixture comprising 35 to 80% by weight of metallic powder, 1 to 10% by weight of a salt, 5 to 45% by weight of water, and 1 to 20% by weight of activated carbon,
- wherein the temperature control agent comprises one or more aliphatic compounds having a melting point of 35° C. to 65° C. and a water solubility of 0.05 g/mL or less at 20° C.,
- wherein the temperature control agent is present at 3 to 40 parts by weight with respect to 100 parts by weight of the mixture,
- wherein the heat-generating composition further comprises a binder and is made into a tablet,
- and wherein the temperature control agent comprises one or more compounds selected from the group consisting of a higher α-olefin polymer, polyester polyol, and polyoxyethylene fatty acid diester.
2 more elements
Dependencies are inferred from the claim text.