JPS6140803A - Flocculation-like chlorine dioxide generating composition and its packing body - Google Patents

Abstract

PURPOSE:To obtain the titled composition capable of emitting stably gaseous chlorine dioxide for a long period and excellent in deodorizing plus sterilization effect by flocculating the mixture of high-water absorbable resin, an adhesive, chlorine dioxide and water. CONSTITUTION:The flocculation-like chlorine dioxide generating composition (about 4 million ppm concn. of solid content, about 9pH) consisting of the material of flocculation state wherein chlorine dioxide is contained in a high-water adsorbable resin by mixing high molecular compds. plus the high-water absorbable resin A, an adhesive B (e.g. farinaceous substances and cellulose derivatives), an aq. soln. contg. chlorine dioxide C and water D.

Description

Detailed Description of the Invention (Ill. Field of Application) The invention is a coagulated chlorine dioxide generating composition that can safely release chlorine dioxide gas in a stable state for a long period of time and can perform efficient deodorization and sterilization. and its packaging.

(Prior art) Conventional deodorizers mainly use adsorbent substances, such as activated carbon and activated clay silica gel, which naturally adsorb odor molecules within the deodorizing area. The desorption effect is not sufficient, and the adsorption capacity decreases over time. Due to temperature changes, for example, when the temperature rises, the adsorbate is released instead. No sterilization effect was observed.

Therefore, the use of chlorine dioxide has been considered as an alternative to these, but chlorine dioxide is an unstable and dangerous substance, can cause serious explosions, reacts violently with many substances, and is twice as strong as chlorine. It is a strong oxidizing agent with an effective chlorine content of Self-generated.

Research has also been carried out on chlorine dioxide, which can be easily stored and transported, and is safe and easy to use when needed. A stable aqueous solution of chlorine dioxide has been developed, and the use of a non-hazardous stabilized 4% aqueous solution of chlorine dioxide has been carried out. Generally, it is used diluted to an appropriate concentration, or in powdered form by impregnating a stabilized aqueous solution of chlorine dioxide into a macromaterial such as zeolite.

However, with powder, the manufacturing process is complicated, it takes time to package the product, it is impossible to make products with different concentrations uniformly, it is difficult to release chlorine dioxide gas uniformly over a long period of time, and In order to eliminate the contamination of instruments and other objects by the powder during use, as well as the disadvantages of handling, a method of removing chlorine dioxide water with a gelling agent such as agar or gelatin as described in JP-A No. 57-22102 is proposed. It is known that chlorine dioxide is used in a gelled state = (Problem to be solved by the invention) However, in this gelled state, the evaporation rate of chlorine dioxide is slow at low temperatures (and It has disadvantages such as poor deodorizing and sterilizing effects, and deformation or melting at high temperatures, which reduces the deodorizing effect when used in, for example, automobiles in midsummer.

(Objective of the invention) In view of these drawbacks, chlorine dioxide gas can be released safely for a long time in a stable state with high efficiency (deodorization).

In order to effectively perform sterilization, a liquid stabilized chlorine dioxide aqueous solution is absorbed into a super absorbent resin and turned into a coagulated state, which maintains its coagulated state even at low temperatures such as inside a refrigerator or at high temperatures inside a car in midsummer. It is an object of the present invention to provide a coagulated chlorine dioxide generating composition and a package.

(Structure of the Invention) The gist of the invention is to form a coagulated state from a polymer compound superabsorbent resin, water, a divalent chlorine-containing aqueous solution, and an adhesive, and to generate carbon dioxide in a stable state from the solidified state. A coagulated chlorine dioxide generating composition and a package thereof for diffusing chlorine are provided.

The method for producing the coagulated chlorine dioxide generating composition will now be described in detail.

One of the chemical properties of chlorine dioxide is that it reacts strongly with double bonds and benzene nuclei, and also reacts with other substances such as cyanide, hydrogen sulfide, formaldehyde, phenolic compounds, proteins, starch, etc. High-molecular compound superabsorbent resins such as cellulose-based and synthetic polymer-based polymers do not react easily.

Specifically, the polymer compound superabsorbent resin mentioned above includes, for example, Polymer A-100 (powder) and Sunwet (powder) for starch-based products, and Aguaron C for cellulose-based products.
#AkuceJJ (l) terminal].

Synthetic polymers include DowaJ (sheet form), Wonder Gel [powder], Sumikagel [powder], and Aqua Keep [
powder), Fa Bor (powder), Kuraraygel [powder], Ni 1 Gel [powder], Arasop [powder], etc.

Utilizing the property of this polymer compound that does not easily react with the super absorbent resin, adjust the chlorine dioxide aqueous solution to the specified pH and concentration K11l, stir at room temperature, and add the specified amount of the polymer super absorbent resin. Distribute and mix.

Within 2 to 3 minutes after being mixed in, the chlorine dioxide aqueous solution is absorbed by the superabsorbent resin and turns into a solidified substance.

When using a film-like or fibrous superabsorbent resin, a stabilized chlorine dioxide aqueous solution is injected into the superabsorbent fat side without stirring, depending on the purpose of use, to form a solidified state material. form.

Polymer superabsorbent resin is granular and has weak adhesive strength, so it is possible to increase the adhesive strength by mixing starch, cellulose, and synthetic polymers, but it cannot be said to be safe. Therefore, stabilized chlorine dioxide It is necessary to use an adhesive for the purpose of adhering the super absorbent resin particles containing water to each other between the particles.

For this purpose, starches, animal and plant proteins, seaweed raw material products, cellulose-inducing substances, etc. are used as adhesives, and super-absorbent resin particles are layered in layers to form a highly viscous coagulated state material. It is characterized by obtaining the following.

The hardness or softness of the solidified state can be adjusted by adjusting the addition ratio of adhesive and water, and a desired state can be easily achieved.

In addition, in order to maintain stabilized chlorine dioxide, the pH must be maintained, for example, at IIk degree of 40.000.
The PPmO aqueous solution-e needs to be kept at pH 9'.

Stability changes with changes in pH concentration, and as the pH decreases, it becomes unstable and more chlorine dioxide is liberated.

Generally, stabilized chlorine dioxide used at home and in industry is used as a low-concentration solution of about 20 to 5,000 PPm.

If the concentration of stabilized chlorine dioxide is lowered in this way, the pH will approach 7, and the stabilization process will be broken, resulting in instability.

To prevent this instability, it is necessary to keep the pH at 9.

Next, regarding containers and packages filled with a solidified material of polymeric superabsorbent resin that has absorbed stabilized chlorine dioxide, polymeric superabsorbent resin has low resistance to sunlight, and superabsorbent resin that has absorbed purified water Wk. When placed in a transparent plastic container and exposed to sunlight, it changes to a pasty, highly viscous liquid state in about 16 hours, and the viscosity decreases as time passes.

The same phenomenon occurs when the superabsorbent resin absorbs a stabilized chlorine dioxide aqueous solution.

This phenomenon is thought to be due to the decomposition of the polymer compound due to its original energy.

This is because, as a result of a heat-induced change test, the super absorbent resin containing 1 g of a stabilized chlorine dioxide aqueous solution was placed in a transparent polyethylene container and heated to 50°C in a closed constant temperature heater.

A 24-hour heating test was conducted at 60°C, 10°C, 80°C, and 85°C, and as a result, it deformed at 85°C.

No changes such as melting and decomposition occurred. In other words, it is not a decomposition reaction due to heat, but a decomposition reaction due to light.

We also offer transparent plastic containers for filling in silver, black, reddish-brown, and red.
Painted yellow, green, and blue, containers of each color are filled with super absorbent resin that has absorbed a stabilized chlorine dioxide aqueous solution, and when exposed to sunlight, silver, black, reddish brown, red, yellow, etc. containers decompose. did not occur, but decomposition reactions occurred gradually in green, blue, etc.

Therefore, it is necessary to use a light-shielding container to prevent decomposition of the superabsorbent resin in a container filled with a coagulated product in which a stabilized chlorine dioxide aqueous solution is absorbed by a superabsorbent resin.

Therefore, even if a superabsorbent resin coagulated material that has absorbed a stabilized chlorine dioxide aqueous solution filled in a light-shielding container is placed in a place exposed to direct sunlight at 84°C in a car, it will melt for 9 minutes and no decomposition reaction will occur. The second characteristic is that it must be stored in a bright and hot place, and that it can withstand light and heat.

That is, it can be used to deodorize the inside of a car by placing it in a place where the temperature can reach 84°C in midsummer.

This second invention, the package, will be explained below! 1
As shown in Figures 1 and 2, a small amount of a coagulated composition 1 consisting of a polymeric superabsorbent resin, water, a chlorine-containing aqueous solution, and an adhesive is filled into a container 3 having an opening 2 on one side. The opening 2 is opened during use.

The container 3 can be made of any material such as glass, plastic, metal, etc. If the container 3 is transparent, it is 1M silver in color.

As is clear from the drawing, it is convenient to provide the opening 2 in the lid 4 attached to the mouth of the container 30.

An inner lid 5t is fitted inside the lid 4 to the container 3 to prevent the chlorine dioxide generating solution from escaping when not in use.

The opening 2 may not be provided in the lid 4, but may be provided in the dome 5, and the lid 4 may be used as a sealing lid.

With this configuration, the active ingredient can be diffused to perform sterilization, deodorization, etc. by leaving the opening 2 in an open state and installing it at a location depending on the purpose of use.

Also, by changing the shape of the container, it can be installed in various locations.

(Example) Stabilized chlorine dioxide content 40,000 PPm aqueous solution O250ma
Add 750rrMl of water and stir to make a 1.000mJ aqueous solution, and add 5g of dye to this for coloring.

Based on the pH measurement results, if necessary, add sodium carbonate to adjust the pH to 9.

Lecture 5. Pour 100 mJ of stabilized chlorine dioxide aqueous solution containing OOOPPm into 10 light-shielding filled containers, add 2 g of super absorbent resin while stirring each solution, and mix well. stop.

After 1 to 2 minutes, the stabilized chlorine dioxide aqueous solution is absorbed into the superabsorbent resin, turns into a solidified state, and a product is obtained.

(Effects of the invention) The coagulation of the stabilized chlorine dioxide aqueous solution absorbed in the polymeric superabsorbent resin is more like a coagulated material absorbed by the superabsorbent resin than that of the agar coagulant or the fatty acid sodium salt coagulant. Since objects are aggregates of particles, they have a large surface area (
The transpiration rate increases.

At a temperature of 5°C in the refrigerator, the evaporation loss of super absorbent resin is 1.2 to 1.4 g, while that of other coagulants is 0.3 g.
The evaporation loss is small at ~0.5g.

On the other hand, when super absorbent resin is used, the amount of transpiration of chlorine dioxide inside the refrigerator increases, and the deodorizing effect is reduced.
I was able to increase the effectiveness.

Furthermore, since no melting occurs due to the difference in decomposition reaction even under high-temperature sunlight, it can be used even when placed in a car at 84° C. under direct sunlight in midsummer.

If you want to store it further, there is no need to store it in a cool, dark place (
It is safe, clean, easy to store, transport, and use, there is no danger, and it can be used with peace of mind, and is 2.5 times more effective than conventional products. .

Cupboards, fresh produce showcases, food storage.

This applies to the Tsuka-9 interior, toilets, shoe cabinets, and other closed parts of mountain vehicles.

In the case of taxis, it eliminates the body odor of the previous passenger, giving the next passenger a sense of cleanliness, and has a remarkable effect on preserving the freshness of fresh food stored in the refrigerator.

[Brief explanation of the drawing]

- FIG. 1 is a partially cutaway front view of a packaged solidified chlorine dioxide generating composition according to the present invention, and FIG. 2 is a perspective view of the same invention. 1...-M solid composition, 2... Opening, 3... Container, 4... Roof, 5... Inner lid.

Claims (4)

[Claims] (1) It is characterized in that it is formed into a coagulated form from a polymeric compound, a superabsorbent resin, water, an aqueous solution containing chlorine dioxide, and an adhesive, and is formed in such a way that the chlorine dioxide generated in a stable state is diffused from the coagulated form. Solidified chlorine dioxide generating composition. (2) High molecular compound The coagulated chlorine dioxide generating composition according to claim 1, wherein the superabsorbent resin is a starch-based, cellulose-based, or synthetic polymer-based polymer. (3) The coagulated chlorine dioxide generating composition according to claim 1, wherein the adhesive is starch, protein, or a cellulose derivative of seaweed products. (4) A coagulated chlorine dioxide generating composition comprising a superabsorbent polymer compound, water, an aqueous solution containing chlorine dioxide, and an adhesive is filled in a container having at least a partial opening. Chlorine dioxide generating composition packaging.