Patent ID: 6233945
Filing Date: 2001-05-22
Classification: A61F,C09K,F24V,F25D

Abstract:
A composition for an extended life cold pack comprising:a first endotherm-producing chemical;a solvent;a second endotherm-producing chemical wherein the second endotherm-producing chemical is different from the first endotherm-producing chemical;and wherein said first endotherm-producing chemical and second endotherm-producing chemical are selected from the group consisting of ammonium nitrate, ammonium sulfamate, ammonium nitrite, ammonium iodide, ammonium bromide, sodium chloride, sodium nitrate, sodium nitrite, sodium carbonate, sodium bicarbonate, potassium nitrate, potassium nitrite, urea, methylurea, and combinations thereof;such that the combination of the first endotherm-producing chemical, second endotherm-producing chemical, and the solvent produces a temperature in the combination that is equal to or greater than 10.degree. F. and the cold pack is provided with an extended life.