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Cold insulation tool

A technology of appliances and compositions, applied in the directions of household appliances, applications, household refrigeration devices, etc., can solve the problems of difficulty in visually confirming the cooling state, difficulty, etc.

Inactive Publication Date: 2018-05-11
TOPPAN MOORE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, even if the cold-keeping appliance described in Patent Document 1 contains a dye, it is difficult to visually confirm the cooling state such as freezing. Problems such as difficulty in visually confirming cooling status

Method used

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no. 1 approach 》

[0026] The cold preservation appliance according to the first embodiment of the present invention is a cold preservation appliance comprising a composition for cold preservation containing water, an inorganic salt, a thickener, and a pH indicator, wherein, as the inorganic salt, the cold preservation The composition contains an acidic inorganic salt and a phosphate whose aqueous solution shows acidity, and in the composition for cold preservation, the ratio of the total content of the acidic inorganic salt and the phosphate to the total content of the inorganic salts is 5 by mass. ~100%, the composition for cold preservation contains dihydrogen phosphate and inorganic salts other than dihydrogen phosphate as the acidic inorganic salt, the pKa of the pH indicator is 4.9 to 8.0, and the composition for cold preservation is in The pH (α1) when all components other than phosphate, dihydrogen phosphate, and water are removed satisfies the relationship represented by the following fo...

no. 2 approach 》

[0127]The cold preservation appliance according to the second embodiment of the present invention is a cold preservation appliance comprising a composition for cold preservation containing water, an inorganic salt, a thickener, and a pH indicator, wherein the composition for cold preservation contains an aqueous solution thereof. Acidic acidic inorganic salt and monohydrogen phosphate are used as the inorganic salt. In the composition for cold preservation, the ratio of the total content of the acidic inorganic salt and monohydrogen phosphate to the total content of the inorganic salt is 5-100% by mass, in the composition for cold preservation, the ratio of the content of monohydrogen phosphate to the total content of water, the inorganic salt and the thickener is 0.2-5.0% by mass, the pH The pKa of the indicator is 4.9-8.0.

[0128] The color of the composition for cold preservation of the said cold preservation tool changes greatly before and after freezing of the compositio...

no. 3 approach 》

[0200] The cold preservation appliance according to the third embodiment of the present invention is a cold preservation appliance comprising a composition for cold preservation containing water, an inorganic salt, a thickener, and a pH indicator, wherein the composition for cold preservation contains an aqueous solution thereof. An acidic acidic inorganic salt is used as the inorganic salt, and in the composition for cold preservation, the ratio of the content of the acidic inorganic salt to the total content of the inorganic salts is 5 to 100% by mass, and the composition for cold preservation The composition has a pH (α2) of 7 or less when all components other than the inorganic salt and water are replaced with water. The pH (α3) when replaced with water becomes 7 or more, and the pH (α2) and pH (α3) represent the pH of the discoloration region lower than the pH indicator, the pH of the discoloration region, and the pH higher than the discoloration region. Values ​​of diffe...

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Abstract

This cold insulation tool is provided with a cold insulation composition containing water, an inorganic salt, a thickening agent, and a pH indicator, wherein: the cold insulation composition contains,as the inorganic salt, a phosphate and an acidic inorganic salt of which the aqueous solution exhibits acidity; in the cold insulation composition, the proportion of the total contained amount of thephosphate and the acidic inorganic salt with respect to the total contained amount of the inorganic salt is 5-100 mass%; the cold insulation composition contains, as the acidic inorganic salt, a dihydrogen phosphate and an inorganic salt other than the dihydrogen phosphate; pKa of the pH indicator is 4.9-8.0; in the cold insulation composition, pH (alpha1) obtained when all the contained components except for the phosphate, dihydrogen phosphate, and water are removed satisfies the relationship represented by formula (i) with respect to the pKa. pKa of pH indicator<=pH (alpha1) <=1.8+pKa of pHindicator...(i)

Description

[0001] technical area [0002] The present invention relates to a cool-keeping tool provided with a composition for cold-keeping capable of visually confirming a color change during cooling. [0003] This application claims priority based on Patent Application No. 2015-185043 filed in Japan on September 18, 2015, the contents of which are incorporated herein. Background technique [0004] Cold storage appliances are widely used in storage or transportation of various fresh products, and are usually used repeatedly. Such a cold storage tool includes a cold storage composition having a cold storage function, and is configured by enclosing the cold storage composition in a thermally conductive container. [0005] As a composition for cold preservation, the composition for cold preservation which contains a coloring agent so that the presence of the coloring agent can be visually confirmed easily from the outer side of a cold preservation tool is known. For example, there is dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/08C09K5/06C09K5/14F25D3/00
CPCC09K5/06C09K5/08C09K5/14F25D3/00
Inventor 内野绫田中康弘
Owner TOPPAN MOORE CO LTD