KR100480808B1 - Low aldehydes removing methods for prevention of sick house syndrome and multiple chemical sensitivity - Google Patents

Abstract

A low aldehyde removing method for prevention of sick house syndrome and multiple chemical sensitivity is provided to have a high efficiency for a long time and to be safe to a human body. The low aldehyde removing method comprises the steps of: receiving powder, particle, granule or pellet-type sodium percarbonate(4) as a low aldehyde remover for prevention of sick house syndrome and multiple chemical sensitivity in a sealed container having fine pores(3) and receiving the container in a sealed packaging resin to keep from volatilization of hydrogen peroxide at distribution. The resin is removed at usage, thereby exposing the remover to a housing atmosphere.

Description

Low aldehydes removing methods for prevention of sick house syndrome and multiple chemical sensitivity}

The present invention relates to a method for removing low aldehydes for preventing sick house syndrome (SHS) and multiple chemical sensitivity (MCS), and more particularly, a sick house syndrome, which has recently emerged as a social problem. Among the various chemicals known to cause chemical hypersensitivity, lower aldehydes, which are reported to be particularly serious, can be effectively and reliably removed for a relatively long time, while the by-products of the removal process have high safety and low cost. The present invention relates to a low aldehyde removal method for the prevention and alleviation of sick house syndrome and chemical hypersensitivity with a high price and ease of use.

New house syndrome and chemical hypersensitivity caused by the continuous discharge of toxic chemicals contained in interior materials used for new construction in buildings, houses, schools, etc. This is a big problem in public health.

If you have red spots all over your body after moving to a new house, and suffer from various diseases such as rhinitis, atopic dermatitis, hives, asthma, severe headaches, and bronchitis, you need to suspect sick house syndrome and chemical hypersensitivity. In particular, most people who had allergic diseases before moving out are on the road to worsening, which is a serious health risk for the elderly and children.

These abnormalities are more serious in a house with perfect interior decoration and furniture. In particular, the construction technique with improved insulation performance ultimately results in airtightness by enclosing the interior space.

Volatile Organic Compounds (VOCs) emitted from finishing materials and building materials are most emitted 6 months after the construction of new buildings, and up to 10 years after construction on glued hardwood floors and tiles. It is reported that hazardous substances are released.

In recent years, various diseases such as allergic nose disease, dermatitis, cough, and asthma are prevalent and poorly treated in children. In most cases, it is due to pollution of the home environment. It needs to be careful as it can get worse and get irreparable. Patients with chemical hypersensitivity are incapable of treating themselves, and if they get worse, they may show abnormal symptoms such as headaches, fever, skin rashes, and hand shaking, or the smell of toothpaste, soap, and detergents that they usually use. In addition, a severe rejection of chemical fibers such as a seat cover or a towel is caused, and a vehicle using a chemical interior material is not available at all.

According to a research report (Professor Dong-won Yoon, Kyungwon University), the indoor air content of a large 60-pyeong apartment in Seoul was detected, and the total amount of volatile organic compounds was detected at 1.6 mg / m3. It is equivalent to 4 times 0.4 mg per m3, which is the allowable standard in Japan. Especially, the amount of formaldehyde emitted from adhesives and furniture is more severe, and up to 800ppb (1,000ppb = 1ppm) is detected. It was reported as 10 times higher than the limit.

Hazardous volatile organic compounds in the normal-temperature gaseous state, which cause the sick house syndrome and chemical hypersensitivity, are known to reach hundreds of species, but representative ones include benzene derivatives such as benzene, toluene, xylene, and ethylbenzene; It is lower aldehydes, such as formaldehyde and acetaldehyde.

The biggest problem among them is formaldehyde, a chemical widely used in preservatives, adhesives, plywood processing, etc., and it turns out to be a carcinogen causing serious effects on the nervous system and organs.

Exposure to formaldehyde temporarily causes symptoms such as eye and throat swelling or coughing, and when severe, allergic diseases such as asthma, rhinitis and atopy are aggravated. If left untreated, it may cause chemical hypersensitivity, as described above.

Allergic diseases are influenced not only by dietary habits and genetic influences but also by the living environment.In particular, atopic dermatitis mostly occurs in infants and children in the past, but the incidence rate of adults is gradually increasing. Is a very important living environment problem.

Therefore, by removing volatile organic compounds such as formaldehyde, which are known to be particularly harmful, over a long period of time, maintaining a clean living environment, low levels that can effectively prevent sick house syndrome or chemical hypersensitivity and alleviate or reduce the risks. There is an urgent need for the development of effective removal methods for aldehydes.

At present, the conventional methods for blocking or removing harmful substances occurring around living, in particular, lower aldehydes such as formaldehyde, can be broadly divided into three types.

The first is the method of ventilation, but natural ventilation has a weak effect, and in modern life where air conditioners are widely used, air conditioners in summer and heaters in winter are often closed, so ventilation is not easy. . In particular, overheating in the closed state in winter can accelerate the discharge of lower aldehydes. Although it is possible to consider a method of forcibly ventilating the indoor air by using a ventilation facility, in this case, there is a disadvantage in that the installation of the device is expensive.

The second method is by adsorption, and a representative method is to use an adsorbent such as activated carbon. For example, Korean Patent Publication No. 2004-0035638 discloses a curtain using charcoal. In addition, the adsorption by ocher has also been attempted, but these methods are simple adsorption methods, so it is difficult to fundamentally remove harmful substances, and the adsorption efficiency is low.

In addition to activated carbon, the use of porous adsorbents such as activated clay, silica gel, and activated alumina is known, but these are also known to have low adsorption performance and problems in their persistence.

In addition, Korean Patent Publication No. 2003-0016069 discloses an adsorbent in which organic compounds such as amines, hydrazines and urea react with lower aldehydes or metal salts are supported on a porous carrier, but the organic compound is used as an adsorbent. In this case, there is a problem in that it generates instability or odor itself, metal salts have a disadvantage that the adsorption rate is slow.

Third is the removal method by oxidation. In this case, a number of technologies using metal oxides have been published. Among them, representative titanium dioxide is used, and the principle of oxidative degradation of lower aldehydes when titanium dioxide is exposed to ultraviolet rays is used. It can be said to be relatively useful in that it can be fundamentally removed, but in order to maximize the effect, it must be processed into nano particles, and the construction cost of related products is expensive, and in the case of existing houses, In addition to the disadvantages, it requires sunlight, and its efficiency is not sufficiently satisfactory.

Therefore, the lower aldehydes have an efficient and stable ability to remove lower aldehydes for a relatively long time, and the by-products generated by the oxidizing action of the remover itself and the remover have high safety, and can be installed inexpensively and easily. The removal method of has not been put to practical use yet.

It is an object of the present invention to effectively remove lower aldehydes, which are harmful substances occurring or existing around the living environment, with high removal efficiency and stability for a relatively long time, and are produced by the oxidizing action of the remover itself and the remover. By-products are not only safer by showing a high safety to the human body, but also to provide a low-aldehyde removal method that can be easily and easily applied at a low price.

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According to one preferred aspect of the present invention for smoothly achieving the above object of the present invention, Sick House Syndrome (SHS) and Multiple Chemical Sensitivity in a hermetically sealed container formed with a plurality of fine holes : MCS) As a lower aldehyde removing agent for preventing, containing a powdered, three-dimensional, granular, or pellet-like sodium percarbonate, the sealed container described above is contained in an airtight packaging resin so that hydrogen peroxide is not volatilized during distribution. After receiving it again, there is provided a low aldehyde removal method for preventing sick house syndrome and chemical hypersensitivity, which comprises exposing the remover to a residential atmosphere by removing the hermetic packaging resin when used. According to another preferred aspect of the present invention for smoothly achieving the object of the present invention, there is provided a low-aldehyde removal method for preventing sick house syndrome and chemical hypersensitivity, wherein the sealed container formed with a plurality of micro-perforated is a non-woven pouch. do.

According to another preferred aspect of the present invention for smoothly achieving the above object of the present invention, the low aldehyde remover is a bird house syndrome and chemicals further comprising silica gel, magnesium sulfate or sodium sulfate or a known fragrance as a hygroscopic agent. A low aldehyde removal method for the prevention of hypersensitivity is provided.

According to another preferred aspect of the present invention for smoothly achieving the above object of the present invention, a low weight for preventing sick house syndrome and chemical hypersensitivity in which the mixed weight ratio of the lower aldehyde remover and the moisture absorbent is 1: 9-9: 1. An aldehyde removal method is provided.

Hereinafter, the present invention will be described in detail.

As described above, the low aldehyde removal method having excellent air purification efficiency is not only excellent in the low aldehyde removal ability, but also excellent in the stability of the low aldehyde remover itself, so that the long-term performance can be achieved, and the low aldehyde remover itself Of course, by-products that can be produced by reacting with lower aldehydes should be free from harm to the human body. It must also be economical in terms of price and easy to install and use.

The inventors of the present invention have made great efforts to find a removal method that is very satisfactory in satisfying the above conditions and can inherently remove lower aldehydes by an oxidation reaction. And, preferably, the use of sodium percarbonate or potassium percarbonate, in particular powdered, three-dimensional, granular, or pelletized sodium percarbonates can exert surprising effects, on the basis of which It is early.

Lower aldehydes are slowly oxidized by oxygen in the air and are converted into organic acids, but the rate is relatively slow.

On the other hand, oxides such as copper, nickel, silver, potassium dichromate, and the like can be used as catalysts for the oxidation of lower aldehydes, but they are not preferable because they are expensive and can act as other contaminants after use.

In addition, chlorine dioxide is known to be oxidizing ability to lower aldehydes, but it has an irritating odor and lacks the ability to remove it.

Hydrogen peroxide has high oxidizing power and is suitable for lower aldehyde oxidation. However, it is difficult to utilize high purity and commercially available aqueous phase itself evaporates in a short time. Therefore, low aldehyde continuously generated is removed for a long time. There is a problem that it is unsuitable to have a relatively high concentration of hydrogen peroxide in a residential atmosphere for a long time.

Accordingly, the present inventors conducted a multi-faceted study on a method for utilizing hydrogen peroxide, which is an effective oxidizing agent, and as a result, percarbonate salts such as powdered sodium percarbonate and potassium percarbonate, perborate Attention was paid to salt.

The above-mentioned percarbonate salts and perborate salts are both commonly used in the industry as oxygen-based bleaching agents for powdered laundry detergents, and have hydrogen peroxide in their molecules.

Therefore, when they are dissolved in water, hydrogen peroxide is released immediately, but if the humidity and temperature are properly maintained, hydrogen peroxide, which is a liquid phase, remains stably attached to a solid phase surface, thereby becoming a form suitable for use in the present invention. .

2Na ₂ CO ₃ ㆍ 3H ₂ O ₂ (Sodium percarbonate) → 2Na ₂ CO ₃ + 3H ₂ O ₂

2K ₂ CO ₃ ㆍ 3H ₂ O ₂ (Potassium percarbonate) → 2K ₂ CO ₃ + 3H ₂ O ₂

In the present invention, perborate salts can also be used, but percarbonates are most preferred in terms of environmental impact and by-product safety.

As mentioned above, percarbonate salts are stable at room temperature, and moisture and temperature influence the release of hydrogen peroxide.

As confirmed by the inventors, the percarbonate salts and perborate salts are generally stable in the temperature and humidity conditions of the room to which the present invention is applied, and in particular, sodium percarbonate is quite stable, and thus it is possible to release hydrogen peroxide as an active ingredient for a long time. have.

When the hydrogen peroxide of the percarbonate salt comes into contact with the lower aldehyde, an oxidation reaction occurs and lower fatty acids are produced. In the case of formaldehyde, formic acid (formic acid), acetaldehyde forms acetic acid (acetic acid). These lower fatty acids are harmful to the human body at high concentrations, but considering the amount of lower aldehydes in the room, they are produced less and are neutralized by reaction with basic sodium carbonate nearby. Sodium carbonate is slightly alkaline. It is converted to sodium bicarbonate, so there is no risk.

Percarbonate salts are usually sold in powder or granule form. In the case of using the solid phase, the powder phase is preferable in terms of increasing the contact area, although there is no significant difference in the effect of any form. In addition, in the case of commercially available sodium percarbonate, in order to prevent the destruction of the active ingredient by moisture in recent years, the surface of the product is treated with a water-soluble polymer can be seen, and can be applied as the uncoated.

Percarbonate salts have excellent stability in themselves, but when made into aqueous solution, the hydrogen peroxide content drops sharply to one-third of the initial content even after one day. Therefore, in order to use for a longer time, the normal absorbents may be directly mixed or used in a separate space adjacent to each other.

In this case, as a hygroscopic agent that can be mixed, conventional ones such as silica gel, magnesium sulfate, sodium sulfate, and the like are preferable. When a large amount of water is generated by dissolving with moisture absorption such as calcium chloride, the water of the percarbonate salt is deteriorated by this water. You can't.

Other ingredients may be mixed with aroma or mixed with a deodorant to deodorize as needed to change the atmosphere of the room or enhance emotional stability.

As the above-mentioned fragrance as an auxiliary ingredient, various known substances used for this purpose may be preferably used in accordance with the recent increase in interest in aroma-therapy. Especially preferably, natural herbal plants Extracts or dry powders thereof may be used, for example, strawberry flavor, grape flavor, banana flavor, apple flavor, pineapple flavor, lemon flavor, vanilla flavor, chocolate flavor, rose flavor, pine needle flavor, geranium flavor, cypress flavor, orange flavor, Vanilla, Lavanda, Peppermint, Lemon, Jasmine, Mockup, Sandalwood, Juniper, Rosemary, Rosewood, Eucalyptus, Belgamot, Lemongrass, Teatree, Neroli, etc. It is also possible to use an adsorbent of the above, and the aromatic substance may be any one of artificial flavor or natural flavor, but is preferably silvery without natural flavor. It is more preferable.

The aromatic substances which can be applied to the removal method of the present invention auxiliary are conventional ones known in the art, and the selection of the components of the specific aromatic substances, their adsorption amount, the addition amount, etc. may be appropriately selected based on the functionality and the preference of the customer. have.

On the other hand, in the removal method of the present invention, the container containing the lower aldehyde remover as an air purifier is not particularly limited. However, if the container is used in a powder form, it is possible to contact the material to be removed in the air while being hermetically sealed so that the powder does not spill. It should be done. The most suitable for these needs is to use in pouches made of breathable nonwovens. Nonwovens keep the contents from spilling while maintaining breathability. It is also desirable to widen the contact surface with the atmosphere as much as possible.

The material of the container that can be used in the removal method of the present invention is not limited and optional, non-woven fabrics, plastics, paper, glass, etc. can be used, and two or more of them may be used in combination.

A preferred example of the application of the lower aldehyde removal method of the present invention is described with reference to FIGS. 1A to 1D as follows.

In the example shown, the lower aldehyde remover particles 4 and the moisture absorbent 5 as an optional component are accommodated in the nonwoven pouch 1, and the nonwoven pouch 1 is a nonwoven fabric in which a plurality of fine through holes 3 are formed. (2) (see FIG. 1C), the nonwoven pouch 1 is accommodated again in the airtight packaging resin 6 so that hydrogen peroxide is not volatilized in the distribution process, and both ends or one end thereof are in the heat-sealed portion 7. Sealed (see FIG. 1B).

In FIG. 1A, the packaging container 10 is composed of a paper box 11 and a nonwoven pouch 1 in an airtight packaging resin 6 housed therein, and on the front or the front and the rear of the paper box 11. The perforated line 16 and the bent line 17 may be formed in advance, or a region defined by a square or rectangular perforated line may be formed although not shown. An extension part 12 extending from the paper box 11 is formed at the upper end of the packaging container 10, and a protrusion 13 having an annular opening 14 is formed at the center thereof to facilitate the wall or the cabinet. It may be configured to be hooked, but all of these matters are arbitrary in the present invention.

Referring to the removal method of the present invention using the packaging container 10 of the example shown in FIGS. 1A to 1D, first, the upper end of the packaging container 10 is opened to take out the airtight packaging resin 6 in which the pouch 1 is accommodated. Next, the airtight packaging resin 6 is removed, the pouch 1 exposed in the air is placed in the packaging container 10, the cut line is cut off, and the folding piece 15 is folded along the bend line, and lower aldehydes Used for the removal of Of course, the pouch 1 may be put in the packaging container 10 after the folding operation of the folding piece 15.

In addition to the forms mentioned above, various changes and modifications are possible to those skilled in the art, as well as within the scope of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples, Examples, and Comparative Examples, but these are merely to illustrate the present invention and are not intended to limit the present invention.

[Test Example 1:]

A study was conducted on whether the percarbonate salt as a lower aldehyde remover that can be effectively applied to the removal method of the present invention can continuously perform its own stability.

First, spread 20 g of sodium percarbonate widely in three Petri dishes and store it in a constant temperature and humidity bath controlled to maintain a temperature of 27 ° C. and a relative humidity of 78% without opening a lid, and the hydrogen peroxide content in sodium percarbonate over time. Was analyzed. The content of hydrogen peroxide was quantified by an analytical chemical titration method using aqueous potassium permanganate solution.

The hydrogen peroxide content before the test of the commercially available sodium percarbonate used was 12.3%, and when this value was set as the reference value 100, the change with time was described in terms of percentage.

Table 1 below shows the results of time-lapse stability test of sodium percarbonate.

Changes in Hydrogen Peroxide Content in Sodium Percarbonate Before test (standard) After 1 day After 3 days After 5 days After 10 days After 30 days Sample 1 100 99.3 98.7 98.3 97.4 90.3 Sample 2 100 99.1 98.5 97.8 96.4 90.1 Sample 3 100 99.0 98.7 97.8 96.5 90.2 Average 100 99.1 98.6 98.0 96.8 90.2

[Test Example 2:]

Except for changing the temperature and humidity conditions to 40 ℃, 56% relative humidity under the same method and conditions as in Test Example 1, the time-lapse stability was tested to obtain the results as shown in Table 2 below.

Changes in Hydrogen Peroxide Content in Sodium Percarbonate Before test (standard) After 1 day After 3 days After 5 days After 10 days After 30 days Sample 1 100 99.2 97.4 95.7 91.7 77.0 Sample 2 100 99.0 97.3 95.6 91.3 76.1 Sample 3 100 98.4 97.6 96.0 92.1 78.2 Average 100 98.9 97.4 95.8 91.7 77.1

[Test Example 3:]

Each glass bottle with a stopper containing 20g of sodium percarbonate was stored in an oven at 60 ° C. for one week and then tested for changes in the content of hydrogen peroxide. The results are shown in Table 3 below.

Changes in Hydrogen Peroxide Content in Sodium Percarbonate Before test (standard)     After 7 days Sample 1 100 94.2 Sample 2 100 93.6 Sample 3 100 94.4 Average 100 94.1

Example: Formaldehyde Removability Test of Sodium Percarbonate

Two 3-liter Erlenmeyer flasks with stoppers were prepared and placed in an open state containing 50 g of sodium percarbonate on one side and closed on the other side with an empty cap.

1 μl of formalin was added to each of the Erlenmeyer flasks and warmed slightly so that formaldehyde was evaporated. At the time of measurement, the atmosphere in both flasks was taken, and the content of formaldehyde was measured using the gas detection tube method.

The results are shown in Table 4 below and FIG. 2.

Formaldehyde Removal test result by the gas detection tube method ^*        Concentration (ppm) time (min) Blank          sample      % Removal 0 30.0 30.0 - 5 25.0 13.0 48.0 15 20.0  6.0 70.0 30 17.5  4.0 77.1 60 15.0  2.0 86.7 120 12.0 <0.5  > 95.0

% Removal = [(Cb-Cs) / Cb] * 100

Cb: blank, formaldehyde concentration remaining in the test container after each time

Cs: Sample using sodium percarbonate, remaining in test container after each hour

     Formaldehyde concentration

Note ^* : Result from the Korea Textile Testing Institute.

As can be clearly seen from the above examples, formaldehyde decreases with time even in the blank, but in the removal method according to the present invention, the speed is significantly increased.

Comparative Example: Test for Formaldehyde Removal of Chlorine Dioxide

Two 3-liter Erlenmeyer flasks with a stopper were prepared, and one side was filled with 50 g of commercially available 5% chlorine dioxide in a container, and the stopper was left empty.

1 μl of formalin was added into both Erlenmeyer flasks and warmed slightly so that formaldehyde was evaporated. At each measurement time, the atmosphere in both flasks was taken, and the content of formaldehyde was measured using a gas detection tube method.

The results are shown in Table 5 below.

Formaldehyde Removal test result by the gas detection tube method ^*        Concentration (ppm) time (min) Blank          sample      % Removal 0 30.0 30.0 - 5 25.0 25.0 0.0 30 22.0 20.0 9.1 60 19.0 16.2   14.7 120 16.0 12.5   21.9

% Removal = [(Cb-Cs) / Cb] * 100

Cb: blank, formaldehyde concentration remaining in test container after each time

Cs: sample using chlorine dioxide, remaining in the test container after each hour

 Formaldehyde concentration

Note ^* : Result of test performed by Korea Yarn Textile Testing Institute

As described above, the lower aldehyde removal method as one of the methods for purifying air according to the present invention is capable of efficiently and stably removing lower aldehydes, which are harmful substances generated or existing around the living environment, and at the same time, the remover itself and the remover. By-products produced by the oxidative action show high safety for the human body, can exhibit the removal efficiency and stability for lower aldehydes for a relatively long time, and can be easily applied at a low price. It is efficient and economical because it is effective enough to simply keep it all over the required space of a home or public institution without any special equipment, adaptation or construction process for the application.

1A to 1D are exemplary views showing an example of a lower aldehyde removing method according to the present invention.

2 is a test result diagram comparing the formaldehyde removal ability with the blank in the lower aldehyde removal method according to the present invention.

-Explanation of symbols for the main parts in the drawings-

1: pouch 2: non-woven

3: micro-perforation 4: lower aldehyde remover

5: hygroscopic 6: airtight packaging resin

      7: heat seal 10: container

11: paper box 12: extension

13: protrusion 14: annular opening

15: folding piece 16: perforated line

17: bending line

Claims (6)

delete delete Low aldehyde remover for preventing Sick House Syndrome (SHS) and Multiple Chemical Sensitivity (MCS) in sealed containers with many micro-perforated powders. In addition, the above-mentioned closed container is housed in the airtight packaging resin again so that hydrogen peroxide is not volatilized during distribution, and when used, the above-mentioned remover is exposed to a residential atmosphere by removing the above airtight packaging resin. Low aldehyde removal method for the prevention of sick house syndrome and chemical hypersensitivity consisting of. 4. The method of claim 3, wherein the closed container in which the plurality of fine holes are formed is a non-woven pouch. The method of claim 3 or 4, wherein the lower aldehyde remover further comprises silica gel, magnesium sulfate or sodium sulfate or a known fragrance as a hygroscopic agent, and lower aldehyde removal method for preventing hypersensitivity syndrome and chemical hypersensitivity. The method of claim 5, wherein the mixed weight ratio of the lower aldehyde remover and the hygroscopic agent is 1: 9-9: 1, the lower aldehyde removal method for preventing sick house syndrome and chemical hypersensitivity.