JPH06107401A - Oxygen generating agent - Google Patents

Abstract

PURPOSE:To freely control the amt. of oxygen to be generated and generating time, to obviate the contamination of a liq. reactant and its harmfulness and to obtain a convenient, inexpensive, safe and sure oxygen generating agent by surface-treating peroxide grains which are microcapsuled and further depositing a special catalyst on an outer surface. CONSTITUTION:The peroxide grains are covered with a water-soluble film and microcapsuled, catalase or leonet is deposited on the outer surface, and the microcapsule is powdered or the powder is tableted or granulated. Consequently, the oxygen generating agent and catalyst need not be separately packed as in the conventional process. Oxygen is stably supplied over a long period only by charging the agent into water, the liq. reactant is not contaminated, and further the agent is not harmful to animals and plants.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an oxygen generating agent, which uses a peroxide as an oxygen generating agent and catalase or rheonet as a catalyst, thereby increasing the amount of oxygen generated and the duration of generation. The purpose of the present invention is to obtain a simple, inexpensive, safe, and reliable oxygen generator that can be freely controlled, removes pollution of the reaction solution and its harmfulness.

[0002]

2. Description of the Related Art As a conventional oxygen generating method, a method of adding water in the presence of a catalyst to an addition compound of sodium carbonate and hydrogen peroxide developed by the present applicants is generally known. ing.

Further, in order to suppress abrupt generation of oxygen and enable a constant amount of oxygen to be supplied for a long time, the above-mentioned addition compound of sodium carbonate and hydrogen peroxide, and a metal salt as a catalyst are mixed in a plurality of different concentrations. Regarding the oxygen generation method, which is solidified by a kind of arabic paste and made to react by adding water to these mixtures, which can be used for emergency, it is already disclosed in Japanese Examined Patent Publication No. 60-44242.
No. 21792).

[0004]

In the case of the above-mentioned conventional method, it was possible to sell an epoch-making evaluation in order to enable reliable and reliable oxygen supply. However, in terms of continuous generation time of oxygen, even in the case of the invention of Japanese Patent No. 1321792 mentioned above, since it is about 20 to 30 minutes on average, it is used for emergency such as first aid for suddenly sick people. Although it is satisfactory for the time being, oxygen inhalation of patients with low lung function, which requires continuous oxygen supply for at least 2 hours, transportation of seafood, or continuous oxygen supply for one week to one month is required. As an oxygen generating means for growing plants, the supply time is too short to be put to practical use.

When sodium percarbonate and a catalyst are mixed,
In order to react with each other, it is necessary to always package the both separately, which is not only inconvenient at the time of use but also expensive in terms of mass-production cost, which is not practical.

Further, since a metal salt such as manganese dioxide or manganese sulfate is used as a catalyst, the waste liquid after the reaction is contaminated, and the contaminated liquid kills fish and shellfish and also has an adverse effect on plants. It is not suitable as a means for supplying oxygen to at least marine products and animals and plants.

[0007]

As described above, the present invention provides oxygen inhalation for patients with low lung function, transportation of seafood, and
It supplies an oxygen generating agent that can be used for a variety of purposes, such as for growing plants that require continuous oxygen supply from a week to a month, and especially for the amount of oxygen generated and its duration. It is possible to obtain a simple, inexpensive, safe, and reliable oxygen generator that can control the time freely, remove the pollution of the reaction solution and its harmfulness.

That is, specifically, a water-soluble coating such as polyethylene glycol is applied to peroxide particles such as sodium percarbonate and calcium peroxide to form microcapsules, and catalase is formed on the outer surface of the water-soluble coating. The present invention relates to an oxygen generator characterized by being formed by adhering particles or leonets.

The present invention also provides a water-soluble coating such as polyethylene glycol on microparticles of peroxide particles such as sodium percarbonate and calcium peroxide to form microcapsules, and catalase particles on the outer surface of the water-soluble coating. Alternatively, the present invention relates to an oxygen generating agent obtained by further tableting or granulating a powder obtained by attaching Leonet.

[0010]

[Function] An oxygen generating agent obtained by microencapsulating peroxide particles that are microencapsulated with sodium percarbonate, calcium peroxide, or the like, or a tableted or granulated oxygen generating agent thereof is put into water. Then, the water-soluble film on the surface is gradually dissolved to expose the peroxide, and the peroxide is sequentially dissolved in water. On the other hand, the catalase particles or leonets attached to the surface of the water-soluble film sequentially start to react with the peroxide dissolved in the water to continuously generate oxygen.

Therefore, the oxygen generation rate per unit time of the above oxygen generating agent is calculated in consideration of the shape of the reaction vessel, the required total amount of oxygen generation, the amount of water used, etc. Consider the dissolution rate of the agent, the amount of catalyst, etc. before adding the appropriate amount.

[0012]

EXAMPLES The specific contents of the present invention will be described below with reference to examples. The oxygen generator used in the present invention is particles of an oxidizable substance such as sodium percarbonate and calcium peroxide, and these are available at low cost.

When sodium percarbonate is selected as the hydrogen peroxide adduct and the mechanism of oxygen generation by the reaction is shown by the reaction formula as follows.

[0014]

[Chemical 1]

As can be understood from the above chemical formula, when water is added to sodium percarbonate, it is dissociated into sodium carbonate and hydrogen peroxide solution, and the hydrogen peroxide solution is decomposed into water and oxygen in the presence of a catalyst. Oxygen is obtained.

As the water-soluble surface coating agent for microencapsulating these peroxide particles, use of polyethylene glycol, sodium pyrophosphate, dextrin, bowshaw, poval, etc. is considered. These surface coating agents can coat the outer surface of the above-mentioned peroxide particles to form microcapsules, thereby completely blocking the reaction with the catalyst deposited thereon and also blocking the moisture in the atmosphere. it can.

When it is put into water, it gradually dissolves to gradually expose the surface of the peroxide, and at the same time controls the reaction with the catalyst that dissolves first to stabilize a certain amount of oxygen for a certain time. Can continue to occur.

When the oxygen generating agent is tableted or granulated, the hardness thereof is adjusted to stably control the reaction between the particles in the micron unit when the oxygen generating agent is put into water. The dissolution rate of the oxygen generating agent can be adjusted freely.

Further, as the catalyst, use of enzymes such as catalase and leonet can be considered. When they react with sodium percarbonate or the like in water, there is no risk of the reaction solution becoming contaminated, and there is no harmful effect on plants and animals.

Incidentally, in the immobilization treatment of the catalyst on the surface of the peroxide such as sodium percarbonate, the particles of the peroxide are used as the mother particles, the surface coating agent such as polyethylene glycol is used as the child particles, and the child particles are used as the mother particles. The mother particles are covered with a film to be microencapsulated by being dispersed around the particles and subjected to a surface modification treatment, and further catalyst particles such as catalase are immobilized on the surface. Note that this microencapsulation can be processed in an extremely short time by a surface modification device.

[Experimental example] Mother particles: sodium percarbonate (sodium carbonate hydrogen peroxide adduct) 300 to 400 microns Apparent specific gravity 0.79 Child particles: Polyethylene glycol (PEG4000) 500 to 700 microns 100 g of the above mother particles On the other hand, 10 g of child particles were added and a film treatment was performed for 5 minutes to obtain microcapsules. After that, 1 gram of catalase was added and surface modification treatment was carried out for 3 minutes.

Next, an actual oxygen generation experiment was conducted on the above-mentioned oxygen generator using the oxygen generator shown in FIG.
In the oxygen generator of FIG. 1, the interior is divided by a partition plate 4 to form a reaction tank 2 and a cleaning tank 3. An upper portion of the oxygen generator 1 is configured to be airtight and removable by an upper lid 5, and a charging port 6 is formed in the upper lid 5, and a lid 7 is airtightly removed from the charging port 6. It is attached freely.

A through hole 8 is formed above the partition plate 4 for partitioning the reaction tank 2 and the cleaning tank 3, and a porous stone 10 is installed from the through hole 8 by a tube 9 near the inner bottom of the cleaning tank 3. It is connected to.

Further, a through hole 11 is formed in a part of the upper lid 5 corresponding to the cleaning tank 3, and a tube 12 is provided from the through hole 11 through an intermediate dehumidifier 13 and an electronic oxygen flow meter 14. Oxygen can be taken out from the nozzle 15.

Incidentally, the total volume of the oxygen generator 1 is 1600.
cc, 900 cc of water was put in the reaction layer 2, 250 cc of water was put in the cleaning tank 3, and 80 g of the above-mentioned oxygen generating agent according to the present invention was put through the inlet 6. In the oxygen generator, the surface treatment agent is gradually dissolved by water in the reaction tank, sodium percarbonate and catalase come into contact with each other to start a reaction, and oxygen is continuously and continuously generated.

Oxygen collects in the upper part of the reaction chamber 2 and is sent into the cleaning chamber from the through hole 8 through the tube 9 by the pressure thereof, and becomes fine bubbles by the porous stone 10 and is discharged from the inner bottom part of the cleaning tank 3. . Further, the released bubbles rise in the water and impurities such as mist of sodium carbonate are removed and are further transmitted through the tube 12 through the through hole 11. When passing through the dehumidifier 13, the water is removed and the bubbles are taken out to the extraction nozzle 15. Sent. By passing the electronic oxygen flow meter 14 on the way, the flow rate is digitally displayed.

The oxygen flowmeter 14 was used to measure the oxygen flow rate over time, and at the same time, the change in water temperature was measured.
The results are shown in Tables 1 to 5 every time the temperature of the reaction solution and the temperature of the cleaning solution are different.

[0028]

[Table 1]

[0029]

[Table 2]

[0030]

[Table 3]

[0031]

[Table 4]

[0032]

[Table 5]

[0033]

As described above, the present invention provides a sodium percarbonate,
With respect to peroxide particles such as calcium peroxide, a water-soluble film is applied to form microcapsules, and catalase particles or leonets are attached to the outer surface of the water-soluble film. As described above, it is not necessary to separately store and use the oxygen generating agent and the catalyst separately in a sealed package, and at the time of use, stable operation can be achieved for a long period of time by simply inserting the oxygen generating agent into water. Oxygen can be supplied.

By further tableting or granulating the powder obtained by adhering the catalyst to the outer surface of the microcapsulated water-soluble film, the amount of oxygen generation and the duration of generation can be freely controlled, Moreover, since catalase or leonet is used as a catalyst, there is no pollution of the reaction solution and no harmful effects on plants and animals, and as a result, transportation of sick people such as emergency patients, people who need supplemental oxygen, or seafood. And growing plants,
It can be used for multiple purposes. Furthermore, the raw materials are inexpensive, the safety is high, and various beneficial effects such as reliable oxygen generation are achieved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an oxygen generator provided for experimental use of an oxygen generator according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oxygen generator 2 Reaction tank 3 Washing tank 4 Partition plate 5 Upper lid 6 Input port 7 Lid body 8 Through hole 9 Tube 10 Porous stone 11 Through hole 12 Tube 13 Dehumidifier 14 Electronic oxygen flow meter 15 Nozzle

Claims (2)

[Claims] 1. A water-soluble coating is applied to peroxide particles such as sodium percarbonate and calcium peroxide to form microcapsules, and catalase particles or leonets are attached to the outer surface of the water-soluble coating. Oxygen generator characterized in that 2. A water-soluble coating is applied to peroxide particles such as sodium percarbonate and calcium peroxide to form microcapsules, and catalase particles or leonets are attached to the outer surface of the water-soluble coating. An oxygen generating agent obtained by tableting or granulating the obtained powder.