KR100809981B1 - Liquid Composition for Reducing Sick House Syndrome and Its Preparation Method - Google Patents

Abstract

The present invention relates to a liquid composition for decomposition and removal of indoor contaminants that decomposes and removes harmful substances such as formaldehyde, which is harmful to a human body. Β- (1,4) -poly-D-glucosamine derivatives ((C ₆ H ₁₁ NO ₄ ) n) derived from glucosamine, a natural polymer, having excellent formaldehyde degrading and antimicrobial properties. As an active ingredient, and may further include a vegetable essential oil containing a large amount of polyphenol compounds. Indoor pollutant decomposition remover of the present invention exhibits excellent indoor pollutants, especially formaldehyde decomposition removal, antibacterial, anti-mold, anti-mite, deodorizing function, can significantly solve the sick house syndrome due to new construction or interior construction of the building, etc. have.

Sick house syndrome, formaldehyde, indoor contaminants, glucosamine, antibacterial, vegetable essential oils

Description

Liquid Composition for Reducing Sick House Syndrome and Its Preparation Method}

Figure 1 shows the change in the concentration of formaldehyde over time in the experimental group using the liquid composition of the present invention.

Figure 2 shows the reduction rate of formaldehyde over time in the experimental group using the liquid composition of the present invention.

Figure 3 shows the change in the concentration of formaldehyde over time in the control group.

Figure 4 shows the reduction rate of formaldehyde over time in the control group.

5 is a test result of the antimicrobial activity of the liquid composition of the present invention.

The present invention relates to a liquid composition for decomposition and removal of indoor contaminants that decomposes and removes harmful substances such as formaldehyde, which is harmful to a human body.

More than 85% (in terms of human impact) of indoor air pollutants that cause sick house syndrome is known as formaldehyde, a volatile organic compound. Formaldehyde is considered to be the most harmful substance to the human body in the indoor living environment, and it affects the human body even at low concentrations, mainly due to poor concentration, allergies, headaches, fatigue, tingling eyes, and strong respiratory tract. In severe cases, it causes memory loss, emotional anxiety, and is mainly known to cause neurological diseases and cancer. Recent studies have shown that it is the leading cause of atopic disease in growing children, and the International Institute for Carcinogenicity (IARC) has confirmed that it causes nasopharyngeal cancer, in particular. Nasopharyngeal cancer is a cancer that occurs mainly in countries with poor environmental conditions, such as China and Southeast Asia, and is a malignant tumor occurring between the nose and the throat. The organoleptic symptoms and the national acceptance criteria for the concentration of formaldehyde are shown in Table 1 below (1 ppm = 120 µg).

Sick House Syndrom is an environmental pollution created by petrochemical civilization, and has been a social problem since the 1980s in the United States and the 1990s in Japan. In other words, newly constructed homes and buildings emit indoor pollutants such as asbestos, formaldehyde and other particulate matter, stimulating the eyes, nose and throat of the human body, headaches and dizziness. It can cause back pain, make the residents feel tired easily, and cause asthma, acute pneumonia, high fever, etc. In this way, the health problems and discomforts of residents in buildings can be described as “Sick House Syndrome or New Building Syndrome” House Sindrome or Sick Building Syndrome ”.

The indoor air quality discharged from the building is classified into gaseous or particulate air pollutants, and due to insufficient ventilation, pollutants are not discharged to the outside and accumulate indoors, causing various problems. At present, the following three physical, biological and chemical factors are considered to be the main causes of sick house syndrome. Among them, volatile organic compounds (VOCs) emitted from finishing materials and building materials, especially formaldehyde (HCHO), benzene, toluene, chloroform, Acetone and styrene are thought to be the main causative agents.

Physical factor

High heat, stress, humidity (mucosa), light, sound (noise), electromagnetic waves (low frequency), ionizing radiation (radon), etc.

Biological factors

Bacteria (fungus, viruses, fungi, bacteria), protozoa (parasites), plant pollen, mites, worms, mice, pets (skin, hair), etc.

Chemical factors

Carbon dioxide, carbon monoxide, nitrogen oxides, sulfur dioxide, ozone, chlorine, mineral fiber, (tap water) lead, particulate matter (soot, tobacco smoke), volatile organic compounds (formaldehyde, organic solvents, insecticides, etc.)

In order to solve the sick house syndrome, a catalytic reaction type harmful organic compound remover such as a photocatalyst, an oxygen catalyst (also known as an air catalyst, a matte catalyst, and a dark catalyst) has been used. They were first developed and completed in Japan. However, these products were mainly developed to prevent organic pollutants from adhering to building exterior materials-building exterior wall tiles, road signs, guard rails, and inside tunnels. Particularly, in the case of a photocatalyst in which a binder is mixed with titanium dioxide in a sol state, ultraviolet rays (UV) must be strongly irradiated to obtain physical energy, which can be converted into chemical energy and decompose organic pollutants. The reaction did not occur properly and the effect was insufficient.

Therefore, in order to solve this problem, various types of photocatalysts capable of obtaining physical energy in the visible light region have been developed. The newly introduced product is an oxygen catalyst whose main component is titanium phosphate. This product has an excellent function in removing contaminants from building exterior materials, but it was not as effective in removing indoor pollutants.

In Korea, since these materials are imported from 1999 to the present, it is used as an indoor pollutant removal agent that causes sick house syndrome, but there are many problems.

In the case of the photocatalyst mainly composed of titanium dioxide, as described above, when it is used as a coating method for indoor furniture, building interior materials, walls, etc., it does not function properly in an indoor environment because it does not function properly when it is irradiated with ultraviolet rays. The chemicals used as binders can act as another contaminant.

Oxygen catalysts containing titanium phosphate as a main component can react with oxygen in the indoor air to obtain physical energy.However, toxic compounds that are vaporized from the interior of titanium phosphate particles are applied to the interior of building materials, furniture, and walls. Since the reaction can only be carried out in direct contact with, the unit reaction surface area is low and the removal efficiency is lowered.

Catalytic toxic substance removers, which have been developed and used so far, require a separate medium such as ultraviolet rays or oxygen when they react with toxic substances, and also display nanoparticles in the form of titanium dioxide or titanium phosphate. There is a problem in that the decomposition rate of harmful organic compounds is lowered because the harmful organic compounds volatilized in the air flow in order to be decomposed only when the reaction occurs. In addition, since antibacterial and antifungal functions cannot be expected, the antimicrobial function is added by adding a small amount of nano silver having antimicrobial power separately. In addition, the antimicrobial effect can be seen only by maintaining the particles of 20 to 40 nanometers due to the nature of the nano silver. When mixed with these substances, aggregation occurs between particles, which makes the particles larger or precipitated, which makes it difficult to expect the antimicrobial effect.

Therefore, the removal rate of formaldehyde, which is the most important causative agent that causes sick house syndrome in apartments, was investigated.In the case of apartments constructed using photocatalysts, the removal rate was 80% to 90% in the laboratory condition of irradiating ultraviolet rays. In the case of apartments constructed using oxygen catalyst, the removal rate of 90 ~ 95% is known to be only 30 ~ 50% in the field under the condition of UV irradiation.

The reason for the difference in formaldehyde removal rate between field construction and laboratory conditions is that, in addition to the difference in the amount of UV irradiation (laboratory: UV lamp direct irradiation, site: natural light conditions), a certain concentration of formaldehyde is volatilized in the chamber under laboratory conditions. While the removal rate is tested by reading the scale of the cartridge presented using the gas bent pipe method, the construction site is a method that quantitatively analyzes the amount of formaldehyde using air collection method (DNPH derivatization method), which is a standard test method of the Ministry of Environment. Superior It is important to measure only a certain amount in a short time because condition of formaldehyde exists in furniture or building interior materials (finishing materials) continuously and volatilizes in real indoor environment. In addition, one of the biggest problems of the conventional catalyst type remover is that the membrane is formed by the binder of the catalyst, so that formaldehyde continuously discharged from the interior of the building material is continuously discharged through the gap of the binder membrane and then roams in the air. When it comes into contact with the catalyst again, since it is decomposed and the catalyst particles distributed on the surface are nano-size, the problem that the reaction cannot occur when the dust particles generated in the room adhere to the surface. This low unit reaction surface area and thus low removal efficiency are not much different from the conditions of volatilization and disappearance for 18 months, which is the half-life of formaldehyde in nature, and for the next 10 years.

In addition, other photocatalyst coatings and decorations, products with an adsorption function, air cleaning plants, air purifiers, etc., are not only effective in themselves, but also the interior finishing materials and woodworking bonds that are the main causes of sick house syndrome. It is estimated that the harmful organic compounds generated from the plant can act only after being released or volatilized to indoor air, and thus, are not much better than the conditions for ventilation.

The present invention is to solve the conventional problems as described above, in the present invention by applying (spray construction) to the building materials, which is the main cause of the sick house syndrome (80%) is deposited on the surface of the building material and subcutaneous tissue distributed in the material It is possible to decompose and remove the harmful substance that causes sick house syndrome before it is radiated into the indoor air, and 20% is rapidly volatilized after application, which can rapidly decompose and remove harmful organic compounds that are emitted indoors or distributed on the surface of building materials. It is an object to provide a composition and a method for producing the same.

To this end, in the present invention, β- (1,4) -poly-D-glucosamine derived from glucosamine, which is a natural polymer, and has excellent formaldehyde degrading power and antibacterial activity, rather than a particulate material requiring a binder like a conventional photocatalyst or an oxygen catalyst. A derivative ((C ₆ H ₁₁ NO ₄ ) n) is used as the main component. In addition, using vegetable essential oils containing a large amount of polyphenol compounds as a secondary component, with β- (1,4) -poly-D-glucosamine derivatives, decomposition and removal of indoor pollutants, antibacterial, anti-fungal, anti-mite The deodorizing function can be provided at the same time.

That is, in the present invention,

A liquid composition for decomposing and removing indoor pollutants comprising β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) and an aqueous solvent is provided. Preferably the composition is plantain; Lemon oil; Sunflower oil; peppermint oil; Clove oil; It further comprises 1 to 20% by weight of one or more vegetable essential oils selected from cinnamon oil.

In the present invention,

5-50% by weight of β- (1,4) -poly-D-glucosamine derivative and plantain; Lemon oil; Sunflower oil; peppermint oil; Clove oil; After mixing 1 to 20% by weight of at least one vegetable essential oil selected from cinnamon oil and the balance of water, the liquid composition for the decomposition and removal of indoor pollutants, characterized in that the stirring at 1000 ~ 3000rpm for 3-6 hours at 40 ~ 80 ℃ A manufacturing method is provided.

Other objects and advantages of the present invention will be described below and will be better understood by practice of the present invention.

The liquid composition for decomposition and removal of indoor pollutants of the present invention includes β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) and an aqueous solvent for dissolving it as an active ingredient.

β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) is a natural polymer and reacts with aldehydes including formaldehyde (15 species) as a single molecule to react aldehydes. Decompose to compounds without. The mechanism of degradation is shown in Scheme 1 below, and the amino group of the β- (1,4) -poly-D-glucosamine derivative reacts with an aldehyde to convert an unreactive aliphatic primary imine compound and water. The converted imine compound is an aromatic substance.

β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) is dissolved in an aqueous solvent and used in the form of a liquid coating agent. The aqueous solvent can be used without limitation as long as it can dissolve the β- (1,4) -poly-D-glucosamine derivative, and preferably distilled water or chlorine-free water may be used. Preferably, the β- (1,4) -poly-D-glucosamine derivative is included in the aqueous solution at 5-50% by weight. If it is less than 5% by weight, the effect is weak, and if it exceeds 50% by weight, it may be difficult to achieve a uniform aqueous solution.

β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) is applied in a water-soluble state, and after evaporation of water, cellulose or acetate of dry subcutaneous tissue such as wallpaper or furniture It exists in covalent bonds and reacts with formaldehyde monomolecules which are constantly released from the inside of the material to maintain the decomposition mechanism.

In addition, β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) also exhibits antimicrobial activity. β- (1,4) -poly-D-glucosamine derivatives ((C ₆ H ₁₁ NO ₄ ) n), when present with an organic acid, show an amino group with a cation, which binds to a carboxyl group (anion) in bacterial body surface proteins. . Therefore, the glucosamine derivative is wrapped around the surface of the bacteria, and prevents the growth of the bacteria by preventing the bacterial division and absorption of nutrients exhibits the antibacterial action. In the embodiment of the present invention, the E. coli, Staphylococcus aureus, pneumococci, Pseudomonas aeruginosa were reduced by 99.9% after 60 minutes of inoculation.

The liquid composition for decomposition and removal of indoor pollutants of the present invention may further include a vegetable essential oil containing a large amount of polyphenol compounds as an active ingredient. For example, plantain; Lemon oil; Sunflower oil; peppermint oil; Clove oil; Cinnamon oil (cinnamon oil) and the like may be included one or more.

The polyphenol compound included in the vegetable essential oil has a plurality of hydroxyl groups ((-OH), which react with various harmful organic compounds to chemically neutralize, substitute, and reduce, resulting in a deodorizing effect. In addition, due to the adsorption and volatility of vegetable essential oils, the surface of the equipment and the harmful substances in the air are forced to volatilize and exert a specific function to rapidly volatilize and also help volatilization of the solvent. The poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) penetrates into the building material and quickly binds to the tissue of the material. Included in%.

The liquid composition of the present invention may be preferably obtained by mixing β- (1,4) -poly-D-glucosamine derivative, vegetable essential oil, and water, followed by heating and stirring to disperse the emulsion and mature. Preferably it is stirred at a stirring speed of 1000 ~ 3000rpm for 3-6 hours at a temperature of 40 ~ 80 ℃.

In addition, the composition can be adjusted more effectively according to the use in consideration of characteristics such as building materials to be used. That is, adjustment can be made in consideration of the activity of the amino group which is responsible for the main reaction, conditions for increasing the molecular weight, binding to the substrate, volatilization after coating of the substrate, and the like. For example, when used in substrates with a large number of cellulose tissues such as wood, fibers, etc., 5-50% by weight of β- (1,4) -poly-D-glucosamine derivatives and 1-10% by weight of vegetable essential oils Mix and the remainder is mixed with water and stirred at a stirring speed of 1000 ~ 3000rpm for 3-6 hours between 40 ~ 70 ℃ temperature. In addition, when used for a substrate made of chemical materials such as PVC and acetate, 5-30% by weight of the β- (1,4) -poly-D-glucosamine derivative and 1-20% by weight of the vegetable essential oil are mixed. The remainder is mixed with water and stirred at a stirring speed of 1000 to 3000 rpm for 3 to 6 hours between a temperature of 60 to 80 ℃.

In addition, a known additive such as an anti-mite agent or an emulsifier may be added to the composition of the present invention according to a known purpose and method. In particular, anti-mite extracts Pyrethrin, Cinerine and the like extracted from plants may be contained in the composition 0.5 ~ 2%.

Hereinafter, the present invention will be described in more detail with reference to specific examples. However, the scope of the present invention is not limited by the following examples, and those skilled in the art to which the present invention pertains should be within the equivalent scope of the technical concept of the present invention and the claims to be described below. Of course, various modifications and variations are possible.

Example

β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) ₃ ) 30% by weight, 10% by weight of 1: 1: 1 mixed oil of lemon oil, plantain and sunflower oil, and 60% by weight of distilled water % Was mixed and stirred at 60 ° C. for 4 hours at a stirring speed of 2000 rpm to form a liquid composition.

Experimental Example  One

Field application experiment

1. Experimental conditions

The construction materials of new apartment buildings are very difficult to carry out field application experiments because the construction companies have different characteristics and occupancy periods are different. In addition, even if the construction in the same construction company it is difficult to match the initial concentration of the experimental group and the control. Therefore, in order to match the initial concentrations of the experimental group and the control group, the construction materials were rented out by the Institute of Construction Technology and were simultaneously constructed with the same building materials, and the maximum concentration of formaldehyde that can be generated during the construction or interior of the building can be maximized. Material was used.

The experimental group used the liquid composition of the present invention prepared in the above examples. The control group was Bake-out only, but after 30 minutes of ventilation, the temperature was adjusted to match the experimental group.

2. Measure

(1) Temperature: Keep the room temperature above 20 ℃ during sampling.

(2) Airflow: There was no airflow effect due to the lack of ventilation system.

3. Sample Collection Method

After 30 minutes of ventilation, air was sealed for 5 hours, and samples were collected and measured at the same time three times.

4. Test Method

The indoor air process test method of the Ministry of Environment was used, and formaldehyde was used for 2,4-DNPH derivatization HPLC analysis.

5. Results

(1) experimental group

In the experimental group, the initial concentration was measured and then applied (constructed) the liquid composition of the present invention prepared in the above example, and then measured after ventilation and sealing under the same conditions as the control group periodically from the next day. The results are shown in Table 2 and FIGS. 1 and 2. Table 2 and Figure 1 shows the change in formaldehyde concentration of the experimental group, the measurement result was the initial concentration was 2880㎍ / ㎥ and after two days of construction the measurement was reduced to 1115㎍ / ㎥, the last day of the experiment 533㎍ / ㎥ Appeared. Figure 2 shows the reduction rate of formaldehyde over time of the experimental group, after two days of application was reduced by 61%, after 12 days was maintained at 81%.

(2) control

The control group was subjected only to bake-out without applying (building) the liquid composition prepared in Example. Ventilation and sealing were performed under the same conditions as the above experimental group. However, after 30 minutes of ventilation, which is the pre-ventilation of the morning of the measurement day, the room temperature was adjusted to 22 to 25 ° C. in order to meet the general living conditions and the experimental group. The results are shown in Table 3 below and FIGS. 3 and 4. Table 3 and Figure 3 shows the change in the concentration of formaldehyde over time in the control group, the initial concentration was 2895 ㎍ / ㎥ started similar to the experimental group, 12 days after the bake-out 1955 ㎍ It was / ㎥, it was 2005 ㎍ / ㎥ at the end of the experiment. Figure 4 shows the reduction of formaldehyde over time in the control group, after 4 days of bake-out was reduced by 19%, after 8 days was reduced by 29%, after 12 days about 32% decrease Was maintained.

(3) clearance

In summary, in the experimental group to which the liquid composition of the present invention was applied, the removal efficiency was about 61% after 2 days of application and about 82% after 16 days, whereas in the control group which was subjected to bake-out, about 19% after 4 days, After 12 days, the removal efficiency was about 32%, showing a significant difference. In conclusion, the experimental group was more than 50% better than the control group formaldehyde removal efficiency.

Experimental Example  2

Antibacterial test

According to the “Shake flask method KS W 0146-2003” (Korea Yarn Textile Testing Institute), the test bacteria were cultured at 37 ± 1 ° C. for 24 hours and then the number of bacteria was measured (shaking frequency 120 times / min). E. coli, Staphylococcus aureus, pneumococci, Pseudomonas aeruginosa were reduced by 99.9% after 60 minutes after inoculating the liquid composition of the present invention prepared in the above Examples. The results are shown in FIG.

The liquid composition of the present invention exhibits excellent decomposition and removal ability for formaldehyde, which accounts for 85% of the causative agents causing sick house syndrome, and can simultaneously satisfy the antibacterial, antifungal, anti-mite, and deodorant functions of ammonia. Therefore, it is possible to solve the sick house syndrome due to new building or interior construction. In addition, unlike conventional photocatalysts or oxygen catalysts, there is no need to use a binder that can be a source of pollution, and has the advantage of not affecting the surface appearance or texture of the existing material after construction.

Claims (7)

A liquid composition for improving sick house syndrome, comprising a β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) and an aqueous solvent, and having an ability to decompose and remove formaldehyde. According to claim 1, wherein the β- (1,4) -poly-D-glucosamine derivative is a liquid composition for improving sick house syndrome, characterized in that contained 5 to 50% by weight. The method of claim 2, comprising: plantain; Lemon oil; Sunflower oil; peppermint oil; Clove oil; Birdhouse syndrome improvement liquid composition further comprises 1 to 20% by weight of at least one vegetable essential oil selected from cinnamon oil. According to claim 3, Pyrethrin (Pyrethrin) or cinerine (Cinerine) further comprises 0.5 to 2% by weight of a sick house syndrome improvement liquid composition. 5-50% by weight of β- (1,4) -poly-D-glucosamine derivative ((C ₆ H ₁₁ NO ₄ ) n) and plantain; Lemon oil; Sunflower oil; peppermint oil; Clove oil; 1 to 20% by weight of at least one vegetable essential oil selected from cinnamon oil and the remainder of the water, and then a method for producing a liquid composition for improving sick house syndrome, characterized in that the stirring at 1000 ~ 3000rpm for 3-6 hours at 40 ~ 80 ℃ . The method according to claim 5, wherein 5 to 50% by weight of β- (1,4) -poly-D-glucosamine derivative, 1 to 10% by weight of vegetable essential oil and the remainder of distilled water are mixed, and then 3 to 6 hours at 40 to 70 ° C. Method for producing a liquid composition for improving sick house syndrome, characterized in that the stirring at 1000 ~ 3000rpm. The method according to claim 5, wherein 5 to 30% by weight of β- (1,4) -poly-D-glucosamine derivative, 1 to 20% by weight of vegetable essential oil and the remainder of distilled water are mixed and then 3 to 6 hours at 60 to 80 ° C. Method for producing a liquid composition for improving sick house syndrome, characterized in that the stirring at 1000 ~ 3000rpm.

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