초록 ▼

A cooling agent which cools by an endothermic reaction resulting from the dissolving of crystals of inorganic salts water, the salts crystallizing at about room temperature by supplying heat. The cooling agent comprises a mixture of (i) a sodium phosphate salt, (ii) a sodium ammonium phosphate salt

A cooling agent which cools by an endothermic reaction resulting from the dissolving of crystals of inorganic salts water, the salts crystallizing at about room temperature by supplying heat. The cooling agent comprises a mixture of (i) a sodium phosphate salt, (ii) a sodium ammonium phosphate salt or an ammonium phosphate salt, and (iii) water. The cooling agent is produced in a manner which avoids the conglomeration of the crystals, which was a difficulty in the art. Moreover, the cooling agent of the present invention can be used repeatedly. When a nucleating agent, a highly water absorbent polymer or a thickener is added to the cooling agent, the precipitation of the crystals occurs in a still finer and stabler state. The cooling agent can be used in a cooling pillow having a desirable cooling property and a soft and agreeable touch, which offers comfort with safety and which is free from conglomeration of crystals, even after a long period of time.

대표청구항 ▼

A cooling agent which cools by an endothermic phenomena caused by the dissolution of an inorganic salt crystal in water as a solvent, said dissolving occurring by a rise in temperature at about room temperature, the cooling agent comprising a mixture of (i) a sodium phosphate salt, (ii) a sodium amm

A cooling agent which cools by an endothermic phenomena caused by the dissolution of an inorganic salt crystal in water as a solvent, said dissolving occurring by a rise in temperature at about room temperature, the cooling agent comprising a mixture of (i) a sodium phosphate salt, (ii) a sodium ammonium phosphate salt or an ammonium phosphate salt, and (iii) water, wherein the cooling agent contains a molar ratio of Na to NH4 groups of 1:5 to 5:1 and a total molar ratio of Na and NH4 groups to 1 mol of PO4 groups of 1:1.5 to 1:2.5.