Cold storage material composition and use thereof
US-2020399516-A1 · Dec 24, 2020 · US
Cold storage medium
US11028302B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11028302-B2 |
| Application number | US-201916703316-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2019 |
| Priority date | Jan 29, 2018 |
| Publication date | Jun 8, 2021 |
| Grant date | Jun 8, 2021 |
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Abstract
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Provided is a cold storage medium according to the present invention contains tetra-n-butylammonium ions, silver ions, at least one kind of halide ions selected from the group consisting of fluoride ions, chloride ions, and bromide ions, water, and at least one kind of carboxylic acid ions each represented by the following chemical formula R—COO − (where R represents a hydrocarbon group).
First claim
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The invention claimed is: 1. A cold storage medium, containing: tetra-n-butylammonium ions; silver ions; at least one kind of halide ions selected from the group consisting of fluoride ions, chloride ions, and bromide ions; water; and at least one kind of carboxylic acid ions each represented by the following chemical formula (I), R—COO − (I) where R represents a hydrocarbon group. 2. The cold storage medium according to claim 1 , wherein the at least one kind of carboxylic acid ions includes two or more kinds of carboxylic acid ions. 3. The cold storage medium according to claim 1 , wherein each of the at least one kind of the carboxylic acid ions has a carbon number of not less than 1 and not more than 10. 4. The cold storage medium according to claim 3 , wherein each of the at least one kind of the carboxylic acid ions has a carbon number of not less than 1 and not more than 7. 5. The cold storage medium according to claim 4 , wherein a molar ratio of the at least one kind of halide ions to the silver ions is not less than 5 and not more than 20. 6. The cold storage medium according to claim 5 , wherein the molar ratio of the at least one kind of halide ions to the silver ions is not less than 7.5 and not more than 15. 7. The cold storage medium according to claim 1 , wherein the at least one kind of carboxylic acid ions is selected from the group consisting of pentanoic acid ions, hexanoic acid ions, heptanoic acid ions, methylbutanoic acid ions, ethylbutanoic acid ions, methylpentanoic acid ions, ethylpentanoic acid ions, propylpentanoic acid ions, methylhexanoic acid ions, ethylhexanoic acid ions, propylhexanoic acid ions, and butylhexanoic acid ions. 8. The cold storage medium according to claim 1 , wherein the at least one kind of carboxylic acid ions is selected from the group consisting of pentanoic acid ions, heptanoic acid ions, methylbutanoic acid ions, and ethylbutanoic acid ions. 9. The cold storage medium according to claim 1 , wherein the cold storage medium has a melting point of not less than 3 degrees Celsius and not more than 10 degrees Celsius. 10. The cold storage medium according to claim 9 , wherein the cold storage medium has a melting point of not less than 4 degrees Celsius and not more than 7 degrees Celsius. 11. The cold storage medium according to claim 9 , wherein the following mathematical formula (II) is satisfied: ΔT≤5 degrees Kelvin (II) where ΔT represents a temperature difference between the melting point of the cold storage medium and a temperature at which the cold storage medium under a supercooling state begins to crystallize spontaneously. 12. The cold storage medium according to claim 11 , wherein ΔT is not more than 2 degrees Kelvin. 13. The cold storage medium according to claim 11 , wherein the temperature at which the cold storage medium under the supercooling state begins to crystallize spontaneously is not less than 3 degrees Celsius and not more than 7 degrees Celsius.
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- What does patent US11028302B2 cover?
- Provided is a cold storage medium according to the present invention contains tetra-n-butylammonium ions, silver ions, at least one kind of halide ions selected from the group consisting of fluoride ions, chloride ions, and bromide ions, water, and at least one kind of carboxylic acid ions each represented by the following chemical formula R—COO − (where R represents a hydrocarbon group).
- Who is the assignee on this patent?
- Panasonic Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K5/066. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 08 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).