JPS6039309B2 - Exothermic agent for keeping the human body warm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exothermic agent for keeping the human body warm that generates heat by applying a chemical reaction.

Many heat-generating furnaces and the like that use inorganic compounds and utilize the heat of their chemical reactions have been proposed.

However, many of these conventional products have insufficient heat generation temperature or insufficient duration, or their performance deteriorates over time from manufacture to use, or they use harmful substances, powerful drugs, etc., which may cause anxiety to users. All of them had some sort of defect. In view of these circumstances, the present invention
This was done as a result of various studies, and the gist of it is that the raw material for body warmer ash, which is widely available on the market, is impregnated with dilute acid to adjust the pH to a suitable range. To provide a heat-generating agent for keeping the human body warm, which is harmless, stable, and has excellent heat-generating performance, which is made to react with metal powder of a certain particle size in the presence of air.

The inventors of the present application have found that the optimum performance required for this type of exothermic agent is an exothermic temperature range of 55 to 70 and a duration of 10 to 1 of r or more. It has been found that the most important condition is that the pH value is 4.0 to 6.0.

Here, the acids that should be impregnated into Cairo ash include hydrochloric acid,
It may be an inorganic acid such as sulfuric acid, nitric acid, or phosphoric acid, or a mixture thereof, or an organic acid such as acetic acid or oxalic acid, but in the case of a weak acid, it is necessary to increase the concentration. The metal powder can be iron powder, aluminum powder, zinc powder, tin powder, magnesium powder, calcium powder, or a mixture of these, and must not contain oxides that are generated when exposed to air during powder preparation. The particle size is 1
00 mesh or less, preferably about 50 to 100 mesh.

The particle size of the wet acidic body warmer ash is also the same. When metal powder and wet acidic body warmer ash are mixed in the presence of air, they immediately begin to react and generate heat, so it is desirable to separate them and vacuum pack them during production.

For example, the two may be separated into a breathable inner bag, placed in a non-breathable outer bag, and sealed under reduced pressure. The inner bag can be removed by lifting it by hand. In the present invention, the amount of acid impregnated into the Cairo ash is much smaller than the chemical equivalent to the metal powder, and although the details of the reaction mechanism are unknown, the metal powder is catalyzed by the oxygen in the air under the catalytic action of the acid. It appears to be oxidized.

Of course, there is also a reaction that generates hydrogen to form a salt, or in the case of an alkali metal, the formation of a hydroxide and subsequent neutralization. In addition, it is also possible to use ferrous oxide Fe powder in place of all or part of the iron powder Fe, but in this case, the oxidation reaction to ferric oxide Fe203 is used, and the exothermic performance is maintained. Therefore, it is desirable to use aluminum powder in combination.

Examples will be described below, but the scope of the present invention is not limited thereby.

Example Hemp husk (Ogara) A commercially available dry body warmer ash made by blending combustion improver, glue, etc. with ash, millet ash, plate ash, or anthracite, etc., with pHIO ~ 11 and particle size of 80 mesh or less.
For example, add 15 to 20 gr of a 5 to 10% sulfuric acid aqueous solution to 15 nails of Cairo ash powder made from Kiku no Tomo Ash made by Kodama Brothers Co., Ltd.
A wet acidic body warmer ash 1 impregnated with pH value adjusted to approximately 4.0 to 6.0 was prepared and placed in a breathable inner bag 2 shown in FIG. Iron powder 43 in inner bag 3
After accommodating 0 bait and inserting the bent end 3b into the breathable inner bag 2, the opening □ of the inner bag 2 is fused and sealed;
Further, this was inserted into an air-impermeable outer bag 5 and fused and sealed under vacuum to obtain a preparation.

The inner bag 2 is made by laminating a synthetic resin film with many pinholes on both sides or one side of paper.
The inner bag 3 is made of a thick synthetic resin film, and the outer bag 5 is made of aluminum foil laminated with a synthetic resin film.
formed respectively. Open the outer bag of the preparation as shown by the chain line, take out the inner bag 2, and manipulate it vigorously by hand for several tens of seconds to several minutes, thereby expanding the open end 3b of the other inner bag 3 built in. At the same time, the iron powder was extruded and thoroughly mixed with the wet acid warmer ash, then inserted into the outer bag again and leaked out, as shown in Figure 2.

In the figure, the solid line indicates that the pH was adjusted to 4.2 using a 10% sulfuric acid aqueous solution, and the chain line indicates that the pH was adjusted to 5.8 using a 5% sulfuric acid aqueous solution, and the room temperature was 7 to 14 oo. As shown in the figure, in both cases, the temperature is approximately 55 qo or higher for 10 hours.
, lasted for more than .

For reference, the broken line indicates the pH at 6.5, and the double broken line indicates the pH at 3.2. Comparative Example Table 1 below shows the data of a conventional commercially available 12-layer product, which was operated for 3 to 5 minutes after opening, and if the temperature dropped during the process, was operated for an additional 1 to 2 minutes.

The suitability column is a relative evaluation in which 55 oC or more x 10 hr or more is considered "passable". Table 1 The room temperature during the transition temperature time in the performance table of conventional products is 29 to 3 for those marked with an asterisk (*).
At 3pm, all items were 14 to 20 qo except those marked with (**) which were 20 to 2 which were ○.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, with FIG. 1 being a sectional view and FIG. 2 being a performance curve diagram. 1. Wet acidic body warmer ash, 2.. Breathable inner bag, 3.. Non-breathable inner bag, 4.. Iron powder, 5.. Non-breathable outer bag. Kotobuki Z diagram Figure 2

Claims (1)

[Claims] 1 Impregnating the raw material of Cairo ash with dilute acid to pH 4.0-6
．． An exothermic agent for keeping the human body warm, characterized by consisting of wet acid warmer ash adjusted to zero and metal powder.