# US 2020/0399516 A1 · Cold storage material composition and use thereof

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- Number: US 2020/0399516 A1
- Document ID: US20200399516A1
- Status: Published application
- Kind: A1
- Application number: 17/011,087
- Filed: 2020-09-03
- Published: 2020-12-24
- Earliest claimed: 2018-03-06
- Assignees: Kaneka Corporation
- Applicants: Kaneka Corporation
- Inventors: Risa Narahara
- Web page: https://patentgrep.com/patent/US20200399516A1

## CPC

- C09K 5/066: {Cooling mixtures; De-icing compositions}
- B65D 81/18: providing specific environment for contents, e.g. temperature above or below ambient (with thermal insulation B65D81/38)
- B65D 81/38: with thermal insulation
- Y02E 60/14: Thermal energy storage
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A cold storage material composition is provided allowing for temperature maintenance of a temperature control target article in various control temperature ranges in a range of −75° C. to −55° C. and being capable of solidifying within a given period of time and (ii) a technique of using the cold storage material composition. Also provided is a cold storage material composition including calcium ions, chloride ions, bromide ions, and ammonium ions in respectively specific amounts, relative to 100 mol of water, and having a melting temperature in a range of −75° C. to −55° C.

## Claims

### Claim 1

A cold storage material composition, comprising 0.1 mol to 20.0 mol of calcium ions, 0.1 mol to 28.0 mol of chloride ions, 0.1 mol to 20.0 mol of bromide ions, and 0.01 mol to 10.00 mol of ammonium ions, relative to 100 mol of water,
wherein the cold storage material composition has a melting temperature in a range of −75° C. to −55° C.

### Claim 2 (depends on 1)

The cold storage material composition as set forth in claim 1, wherein the cold storage material composition has a solidification start temperature of not less than −80° C.

### Claim 3 (depends on 2)

The cold storage material composition as set forth in claim 2, wherein a difference between the melting temperature and the solidification start temperature is not more than 16° C.

### Claim 4 (depends on 2)

The cold storage material composition as set forth in claim 2, wherein a difference between the melting temperature and the solidification start temperature is not more than 6° C.

### Claim 5 (depends on 1)

A cold storage material, comprising the cold storage material composition of claim 1.

### Claim 6 (depends on 5)

A transport container, comprising the cold storage material of claim 5.

### Claim 7

A method of producing a cold storage material composition, the method comprising a mixing step forming a mixture in which water, calcium chloride, calcium bromide, and ammonium chloride are mixed.

### Claim 8

A method of producing a cold storage material composition, comprising a mixing step forming any one of the following mixtures (A) through (F):
(A) a mixture in which water, calcium chloride, and ammonium bromide are mixed;
(B) a mixture in which water, ammonium chloride, and calcium bromide are mixed;
(C) a mixture in which water, calcium chloride, a bromide salt, and an ammonium salt are mixed;
(D) a mixture in which water, calcium bromide, a chloride salt, and an ammonium salt are mixed;
(E) a mixture in which water, ammonium chloride, a calcium salt, and a bromide salt are mixed; and
(F) a mixture in which water, a calcium salt, a chloride salt, a bromide salt, and an ammonium salt are mixed.

### Claim 9 (depends on 8)

The method as set forth in claim 8, further comprising, after the mixing step, a cooling step comprising cooling the mixture to deposit ammonium chloride and to remove the deposited ammonium chloride.

### Claim 10 (depends on 9)

The method as set forth in claim 9, wherein the cooling step is carried out at a temperature of not less than −40° C. and wherein the temperature at which the cooling step is lower than the temperature at which the mixing step is carried out.