KR101889286B1 - Composition for remove substances causing sick house syndrome and removal method of substances causing sick house syndrome using the same - Google Patents

Abstract

The present invention relates to a composition for removing substances causing sick house syndrome, and a removal method of the substances causing sick house syndrome. The composition of the present invention removes the substances causing sick house syndrome using chitosan and cyclodextrin, thereby being environmentally-friendly; has excellent harmful substance removal efficiency, and has excellent antibacterial and deodorizing effects.

Description

TECHNICAL FIELD The present invention relates to a composition for removing sick house syndrome and a method for removing sick house syndrome using the same,

The present invention relates to a composition for removing sick sick syndrome-inducing substances and a method for removing sickle-cell syndromes using the same. More particularly, the present invention relates to a composition for removing sickle sick syndromes containing chitosan and cyclodextrin as main components, ≪ / RTI >

With the development of the industry, the development of various building materials which satisfy the functionality and convenience such as safety, construction, durability and economic efficiency has led to the development of building materials, and accordingly the development and use of building materials composed of various chemical materials and composite materials Respectively. However, these building materials cause pollution of indoor air by discharging various harmful substances such as formaldehyde (HCHO) and volatile organic compounds (VOCs), and it causes environmental problems such as headache, vomiting, dizziness and itching (Sick House Syndrome), which causes the disease. The materials causing the sick house syndrome occur most frequently immediately after new construction, reconstruction, and large water repairs. Especially, adhesives used for wallpaper, flooring, and tiling are released continuously for up to 10 years after construction. Studies have been done to remove or block this.

Bake-out, one of the methods to remove indoors hazardous substances, is the most commonly known method, in which room temperature is raised to activate hazardous substances such as formaldehyde and volatile organic compounds to temporarily increase emissions from building materials And then removing it by ventilation. However, the bakeout does not raise the room temperature evenly by the boiler alone, and the temperature of each room can not be raised evenly. As a result, the removal effect of each space is not constant, and the effect differs depending on the degree of ventilation. Also, if the temperature is excessively increased, the moisture remaining in the material may warp or deform the material, and the materials adhered to the adhesive material may have different expansions and may be exposed to fire.

Korean Patent Registration No. 10-0770481 discloses a method for purifying indoor air pollutants causing sick house syndrome using an improved bake out, and a method for purifying contaminants discharged from the interior finishing material Installing a purifier at each point in the room; Elevating the entire indoor temperature evenly using a heat source means and a blower; Removing each of the devices after 3 to 5 hours and ventilating the interior space; And applying the surface of the chemically built-in finishing material.

However, even when the indoor air pollutants are cleaned, it is difficult to increase the temperature of the insulating material, which is a type of building material, and only the pollutants on the surface are exhausted. There is a limit. In addition, it takes a long time to perform and it takes long time to perform it repeatedly, which causes a lot of time and cost.

Another method is a construction method utilizing a photocatalyst, a photocatalyst is TiO _2, ZnO, CdS, etc. are known, but is chemically stable and use the most inexpensive TiO ₂ prices. Titanium dioxide absorbs light to generate holes. Hole reacts with oxygen and water to produce hydroxyl radicals (-OH) and superoxide (O ₂ ^- ) with strong oxidizing power. Hydroxy radicals and superoxide By the oxidation reaction, organic compounds which are contaminants in the air are decomposed into carbon dioxide and water. However, in order to activate the photocatalyst, the ultraviolet rays must be strongly irradiated. Since the amount of ultraviolet rays generated by the sunlight and general illumination from the outside is very small, the catalytic action does not occur properly and the decomposition speed of the organic material is slow. In addition, since a reaction occurs only on the surface on which light is emitted, it is necessary to secure a wide reaction surface for high decomposition efficiency. In case of indoor coating, since harmful substances or pathogens must adhere to the coating surface, There is a difficulty.

Accordingly, it is possible to remove harmful substances semi-permanently by only one time construction, and an environmentally friendly method is needed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of removing sick syndrome causing substances by using a composition comprising chitosan and cyclodextrin as natural substances, And to provide a method for removing the sick house syndrome causing material.

In order to achieve the above object,

1) preparing a composition for removing a sick house syndrome-inducing substance comprising chitosan and cyclodextrin; 2) spraying the sick building syndrome-inducing material removing composition onto the surface of the building and indoor furniture; 3) drying the sick building syndrome-inducing material-removing composition; 4) releasing ozone in the indoor air; 5) coating the photocatalytic composition on the indoor and outdoor furniture; 6) drying the photocatalyst composition. The present invention also provides a method for removing a sick house syndrome causing material.

The composition for removing a sick house syndrome causing material according to claim 1, wherein the sick building syndrome-inducing material removing composition comprises an acrylic resin, an organic acid, water, a thickener, a dispersing agent and an antifoaming agent and comprises 0.5 to 5 parts by weight of chitosan, 0.5 to 5 parts by weight of cyclodextrin, 0.5 to 17 parts by weight of organic acid, 0.2 to 2 parts by weight of a thickener, 0.2 to 2 parts by weight of a dispersant and 0.2 to 2 parts by weight of a defoaming agent.

The chitosan contained in the composition for removing sick syndromes may be any of compounds represented by the following general formulas (1) and (2).

The sick house syndrome inducing substance is any one or more of formaldehyde, radon, volatile organic compounds, and pathogens, and the pathogen includes bacteria, fungi, mites, and viruses.

The interior building surface includes plywood, particle board, wood, stone, tile, painted surface, wallpaper, and the photocatalytic composition includes titanium dioxide (TiO ₂ ).

According to another aspect of the present invention, there is provided a composition for removing a sick sick syndrome-inducing substance comprising chitosan represented by Chemical Formula 1 and cyclodextrin represented by any one of Chemical Formulas 2 to 4.

According to the method of removing sick syndrome causing material of the present invention, it is environment-friendly using chitosan and cyclodextrin, which are natural materials, and is easy to apply to various materials, and can be applied by various methods such as spraying and coating. In addition, it has excellent antimicrobial effect and deodorizing effect because it has excellent effect of removing harmful substances, and the effect is continuously maintained even by one-time construction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for removing a sick sick syndrome-inducing substance according to the present invention.
2 is a graph of formaldehyde concentration measurement according to an embodiment of the present invention.

Hereinafter, a composition for removing a sick sick syndrome-inducing substance according to the present invention and a method for removing a sick house syndrome induced substance using the same will be described in detail with reference to the accompanying drawings.

1 is a process diagram of a method for removing a sick house syndrome causing material according to the present invention. As shown in FIG. 1, the method for removing a sick sick syndrome-inducing substance according to the present invention comprises the steps of: 1) preparing a composition for removing a sick house syndrome causing material comprising chitosan and cyclodextrin; 2) spraying the sick building syndrome-inducing material removing composition onto the surface of the building and indoor furniture; 3) drying the sick building syndrome-inducing material-removing composition; 4) releasing ozone in the indoor air; 5) coating the photocatalytic composition on the indoor and outdoor furniture; 6) drying the photocatalyst composition.

The step 1) is a step of preparing a composition for removing the sick house syndrome causing material, comprising chitosan represented by the following formula (1) and cyclodextrin represented by any one of the following formulas (2) to (4) as an active ingredient.

The composition for removing a sick house syndrome causing material may further comprise 0.5 to 5 parts by weight of chitosan, 0.5 to 5 parts by weight of cyclodextrin, 0.5 to 5 parts by weight of an acrylic resin, Preferably from 23 to 55 parts by weight, from 0.5 to 17 parts by weight of organic acid, from 0.2 to 2 parts by weight of a thickener, from 0.2 to 2 parts by weight of a dispersant, and from 0.2 to 2 parts by weight of a defoaming agent.

Wherein the acrylic resin is selected from the group consisting of methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, isobutyl methacrylate, 2-ethylhexyl methacrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, n- Butyl methacrylate, and the like, but the present invention is not limited thereto.

The organic acid may be any one selected from the group consisting of acetic acid, lactic acid, citric acid, succinic acid, formic acid, fumaric acid, and ascorbic acid, but is not limited thereto.

The thickener, the dispersant, and the defoaming agent may be any conventional ones. The thickener serves to adjust the viscosity appropriately. The dispersant prevents the composition from aggregating and disperses evenly. It removes it.

The sick house syndrome inducing substance is any one or more of formaldehyde, radon, volatile organic compounds, and pathogens, and the pathogen includes bacteria, fungi, mites, and viruses.

The step 2) is a step of spraying the sick building syndrome-inducing material removing composition onto the surface of the building and the furniture of the interior of the building. The surface and the furniture of the interior of the building may include an indoor floor, a wall, a ceiling, , Furniture, shoe boxes, living rooms, and household appliances. Further, the interior building surface includes plywood, particle board, wood, stone, tile, painted surface, wallpaper. When spraying the composition for removing a sick house syndrome-inducing substance, spraying may be used, or spraying may be performed using a roller, a sponge, a brush or the like.

The step 3) is a step of drying the sick building syndrome-inducing material removing composition, wherein the sick building syndrome building material-removing composition infiltrates the surface of the interior of the building and the furniture of the interior, thereby inducing sick house syndrome including formaldehyde, radon, volatile organic compounds, Absorbing and removing substances to exert an antibacterial and deodorizing effect and can maintain the effect continuously and prevent entry and exit of sick house syndrome inducing substances, thereby preventing sick house syndrome induced substances from being discharged to the outside even after a lapse of time.

The step 4) is a step of discharging ozone in the room air, and an ozone generating device can be used. Ozone (O ₃ ) has strong sterilization, deodorization, decolorization, and reactivity with oils and minerals. It is caused by strong oxidizing power. O ₃ is decomposed into O ₂ and O through half life and O It has oxidizing power. In addition, since ozone has a very short half-life and is easily decomposed by heat, ultraviolet rays, catalyst, etc., it is reduced to oxygen, so that harmful reaction products are not left and toxicity due to the residue is easily avoided.

Such ozone has a sterilization mechanism such as damaging the cell membrane of the organism, breaking into the cell membrane, destroying the DNA, damaging the absorption system enzyme, etc., and it is effective in sterilizing and inactivating bacteria and virus. Ozone and inorganic compounds are rapidly oxidized and decomposed to exhibit a deodorizing effect. Since ozone is a gas, it reaches all corners of the room and can exhibit its function.

Particularly, formaldehyde (HCHO), which is a main cause of sick house syndrome, is decomposed into water and carbon dioxide by reacting with ozone as shown in the following reaction formula, and thus the remaining sick house syndrome causing substance can be decomposed and removed through ozone releasing process .

On the other hand, ozone is harmful to the respiratory system by stimulating the mucous membranes of the eyes, nose, and bronchial tubes. Therefore, it is necessary to refrain from entering and leaving the room when performing the ozone releasing process. For this reason, it may further include releasing the ozone in the room to the outside between steps 4) and 5).

The step 5) is a step of coating a photocatalyst composition on a surface of an indoor building and an indoor furniture, and the photocatalytic composition includes titanium dioxide (TiO ₂ ). Titanium dioxide absorbs light, catalyzes reaction, decomposes organic matter and acts as an antibacterial agent to remove harmful substances in the air and continuously adsorbs, decomposes and removes toxic substances. The photocatalytic composition may be sprayed by a spray method, or may be coated using a roller, a sponge, a brush, or the like.

The step 6) is a step of drying the photocatalytic composition. Since the steps 1) to 6) are sequentially carried out, the sick house syndrome inducing material is removed several times to show almost complete removal effect, and after a long time It is possible to prevent the sick house syndrome causing material from being discharged again.

In another aspect, the present invention provides a composition for removing a sick sick syndrome-inducing substance comprising chitosan represented by the formula 1 and cyclodextrin represented by any one of the above-mentioned formulas 2 to 4.

Chitosan has been found to be useful for the production of 2-amino-2-deoxy-D-glucose by β-1,4 linkage Linked polysaccharide polymer is induced by deacetylation of chitin present in crustacean shells such as crab, crayfish, and shrimp according to the following Reaction Scheme 1. Several amino groups (-NH ₂ ) of chitosan are electrochemically positive by protonation depending on acidity and environment, and these physical properties increase the water solubility of chitosan and dissolve well in water.

<Reaction Scheme 1>

In addition, the amino group (-NH ₂ ) of D-glucosamine as a constituent of chitosan causes a nucleophilic addition reaction with the carbonyl group of formaldehyde to convert it into an imine compound which is a non-reactive aromatic substance and water, thereby effectively adsorbing formaldehyde, 2, respectively.

<Reaction Scheme 2>

In addition, chitosan interacts with positively charged chitosan and negatively charged microorganism cell membranes. Chitosan permeates the cell membrane of the microorganism, weakens the cell membrane function, elutes out components of the protein and the intracellular membrane, It has an antibacterial action to kill, has excellent deodorizing function, and adsorbs and removes negatively charged metal ions.

Cyclodextrin (CD) is an eco-friendly substance produced by hydrolysis of starch to α-glucosidase or α-amylase. It is a cyclic structure in which glucose is linked to α-1,4 linkage (? -), 7 (? -) and 8 (? -) depending on the number of glucose residues. Cyclodextrins have a structurally cleaved cone shape, in which the hydroxyl groups bonded to the second and third carbons of the second hydroxyl group (-OH) are hydrogen bonded to form a hydrophobic character in the inner cavity. On the contrary, The outside is hydrophilic by high hydroxyl groups. Due to such properties, cyclodextrin adsorbs and removes volatile organic compounds by encapsulating hydrophobic substances in the inner space, and is excellent in deodorizing effect, has no toxicity, is easily available, and has a low price.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the following examples are intended to illustrate the present invention, and the scope of the present invention is not limited thereto.

Example  And Comparative Example

The compositions for removing sick house syndrome inducing substances were prepared by mixing the composition shown in Table 1 below.

Example 1 Example 2 Example 3 Comparative Example Chitosan 3 3 5 3 β-CD 3 3 5 - Acrylic resin (hydroxypropyl methacrylate) 35 40 50 35 Organic acid (acetic acid) 3 5 16 3 water 100 100 100 100 Thickener (methylcellulose) 0.5 0.5 0.2 0.5 Dispersant (Triton X-100) One One One One Antifoaming agent (acrylic) 0.5 0.5 0.8 0.5

<Unit: g (gram)>

Test Example  1. Formaldehyde removal effect

(10 cm) of a gypsum board (5 cm x 5 cm) coated uniformly with 0.3 g of formaldehyde solution was coated on the surface of the gypsum board. In addition, the samples of Examples 1 to 3 and Comparative Examples were uniformly sprayed on the wallpaper attached to the surface of the gypsum board to which the formaldehyde was applied by the same method. A chalet to which 50 ml of distilled water was added at the bottom of the desiccator was placed, and the prepared sample was put in a desiccator and stored in a sealed state at room temperature. After 24 hours, the concentration of formaldehyde in the distilled water contained in the chalet placed in the desigger was measured and is shown in Table 2 and FIG.

Formaldehyde is slowly desorbed from the gypsum board and filled in the desiccator space, and formaldehyde in the gaseous state is dissolved in the distilled water at the bottom of the desiccator. The higher the concentration of formaldehyde in the gas phase by vapor-liquid equilibrium The principle that the concentration of formaldehyde in distilled water increases is used.

As shown in the following Table 2, the amount of formaldehyde generated in the gypsum boards sprayed with Examples 1 to 3 was about 19.2% of the value of the control. Thus, in Examples 1 to 3, the amount of formaldehyde released from the gypsum board And 80.8%, respectively. On the other hand, when the comparative example containing only chitosan except cyclodextrin was injected, only 63.1% of the released formaldehyde was removed. Thus, the example containing chitosan and cyclodextrin more effectively removed formaldehyde than the comparative example containing only chitosan Respectively.

Example 1 Example 2 Example 3 Comparative Example Control group Formaldehyde concentration (mg / L) 71 72 68 135 366

Test Example  2, Antibacterial effect

Escherichia coli (ATCC 29425), a test strain, was cultured in a liquid medium at 37 ° C for 24 hours, and 1 ml of the culture was diluted 1000 times with distilled water. After 0.01 g of each of the above Examples 1 to 3 and Comparative Example were added to the Agar medium, 0.1 ml of the Escherichia coli dilution was added, and the mixture was incubated at 37 ° C for 24 hours, and the number of colony forming units (CFU) was confirmed. Using the number of CFUs measured, the cell loss rate was calculated by the following equation, which is shown in Table 3 below. As shown in the following Table 3, the cell loss ratio of the comparative example was 62.5%, while the cell loss rate of Examples 1 to 3 was 75% or more, which confirmed that the antimicrobial effect was excellent.

Cell loss rate (%) = 1 - (CFU of experimental group / CFU of control group) 100 (%)

Example 1 Example 2 Example 3 Comparative Example Cell loss rate (%) 75.2 76.4 76.5 62.5

Test Example  3. Deodorant  effect

A control group and a sample were prepared in the same manner as in Test Example 1 above. Each sample was placed in a desiccator, the valve was opened, and 2.5 ㎕ of benzene was injected and the valve was closed. The residual concentration of benzene over time was then measured using a detector tube. The deodorization rate according to the removal of benzene by each hourly time was calculated according to the following equation, and the results are shown in Table 4 and FIG.

Deodorization rate (%) = 1 - (sample concentration / control concentration) × 100 (%)

As shown in the following Table 4, the residual concentration of benzene rapidly decreased after 1 hour and the residual concentration of benzene was continuously decreased even after 2 hours. Also, after 2 hours, the deodorization ratio of the comparative example was 58.9%, whereas the examples 1 to 3 showed a deodorization ratio of about 73.6%, indicating a better deodorizing effect.

Deodorization rate (%) Example 1 Example 2 Example 3 Comparative Example After 1 hour 68.9 72.0 70.1 55.3 After 2 hours 72.6 73.9 74.4 58.9

The foregoing description is merely illustrative of the present invention, and various modifications may be made without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are intended to be illustrative rather than limiting, and the spirit and scope of the present invention are not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all the techniques within the scope of the same should be construed as being included in the scope of the present invention.

Claims (10)

A method for removing a sick house syndrome causing material,
1) preparing a composition for removing a sick house syndrome-inducing substance comprising chitosan and cyclodextrin;
2) spraying the sick building syndrome-inducing material removing composition onto the surface of the building and indoor furniture;
3) drying the sick building syndrome-inducing material-removing composition;
4) releasing ozone in the indoor air;
5) coating the photocatalytic composition on the indoor and outdoor furniture;
6) drying the photocatalyst composition; and removing the sick house syndrome causing material
The method according to claim 1, wherein the composition for removing a sick building syndrome-inducing substance comprises an acrylic resin, an organic acid, water, a thickener, a dispersant, and a defoaming agent
The method of claim 1, wherein the chitosan contained in the composition for removing a sick sick syndrome-inducing substance is a compound represented by the following formula

2. The method of claim 1, wherein the cyclodextrin contained in the composition for removing a sick sick syndrome-inducing substance is any one selected from compounds represented by the following formulas (2) to (4)

[3] The composition of claim 2, wherein the composition for removing a sick house syndrome causing material comprises 0.5 to 5 parts by weight of chitosan, 0.5 to 5 parts by weight of cyclodextrin, 23 to 55 parts by weight of acrylic resin, 0.5 to 17 parts by weight of organic acid, 0.2 to 2 parts by weight of a thickener, 0.2 to 2 parts by weight of a dispersant, and 0.2 to 2 parts by weight of a defoaming agent.
The method of claim 1, wherein the sick house syndrome inducing substance is any one or more of formaldehyde, radon, volatile organic compounds, and pathogens.
The method of claim 6, wherein the pathogen comprises bacteria, fungi, mites, and viruses
The method according to claim 1, wherein the surface of the indoor building includes plywood, particle board, wood, stone, tile, painted surface, wallpaper,
The method of claim 1, wherein the photocatalytic composition comprises titanium dioxide (TiO ₂ ).
A composition for removing a sick house syndrome-inducing substance,
0.5 to 5 parts by weight of chitosan represented by the following formula 1, 0.5 to 5 parts by weight of a cyclodextrin represented by any one of the following formulas 2 to 4, 23 to 55 parts by weight of an acrylic resin, 0.5 to 17 parts by weight of an organic acid 0.2 to 2 parts by weight of a thickener, 0.2 to 2 parts by weight of a dispersing agent and 0.2 to 2 parts by weight of a defoaming agent.

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