US 12,404,436 B2
Latent heat storage material, cold storage tool, distribution packing container, and cold storage tool for food
Kyohei Sezukuri, Sakai (JP); Katsuya Kido, Sakai (JP); Yusuke Ikeda, Sakai (JP); Masakazu Kamura, Sakai (JP); and Yuka Utsumi, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 18/265,152
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Nov. 29, 2021, PCT No. PCT/JP2021/043512
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2022/118765, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 2020-202087 (JP), filed on Dec. 4, 2020.
Prior Publication US 2024/0026200 A1, Jan. 25, 2024
Int. Cl. C09K 5/06 (2006.01); F25D 3/08 (2006.01)
CPC C09K 5/066 (2013.01) [F25D 3/08 (2013.01); F25D 2303/08222 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A latent heat storage material, comprising:
5 to 21 parts by weight of ammonium chloride;
2 to 13 parts by weight of potassium chloride;
5 to 23 parts by weight of urea; and
43 to 88 parts by weight of water,
wherein a total of the ammonium chloride, the potassium chloride, the urea, and the water is 100 parts by weight, and
the latent heat storage material has a main melting point in a range from −20° C. to −23° C.