KR101057643B1 - Coating composition for blocking harmful substances - Google Patents

Abstract

Disclosed is a coating composition which is coated on various interior materials to block the emission of harmful substances. To this end, a mixture of alkaline ionized water, methanol, hydrogen peroxide, sodium chloride (NaCl), isopropyl methylphenol (isopropyl methylphenol), and sansevieria extract is heated for a predetermined time and quenched to room temperature to form a coating composition for blocking harmful substances and the preparation thereof. A method is provided. As described above, the coating composition for blocking harmful substances according to the present invention has an effect of effectively blocking volatile organic compounds emitted from various interior materials so as not to adversely affect the human body.

Hazardous Substances, Coating Composition, Interior Materials, Volatile Organic Compounds

Description

COATING AGENT COMPOSITION FOR ISOLATING HARMFUL MATERIAL}

The present invention relates to a coating composition for blocking the emission of harmful substances by coating on various interior materials, and more specifically, to prevent harmful effects on the human body by effectively blocking volatile organic compounds emitted from various interior materials It relates to a composition.

With the development of modern civilization, the pursuit of social convenience, and especially the popularization of automobiles, air pollution and the destruction of the natural environment have become a major problem in society.

In particular, as the necessity of automobiles is increased due to the change of social structure or work relations, and the automobile is popularized and the automobile culture is developed, the time for people to drive the automobile or the interior of the automobile is increased.

However, in order to manufacture a car, various kinds of synthetic materials have to be used in large quantities. Among them, synthetic resins, synthetic rubbers, synthetic dyes, and foaming agents are used in large quantities in order to manufacture interior materials installed in automobiles, and in particular, a large amount of adhesives are used to attach such interior materials to automobiles. have.

For example, the fabric sheet is coated using a fiber coating containing a volatile organic compound, and the leather sheet is also processed using a leather processing agent containing a volatile organic compound. In addition, a large amount of adhesive is used to mount dashboards, door handles, door panels, ceiling panels, glass panes, and floor mats inside the vehicle, and these adhesives are used in the form of Volatile Organic Compounds (VOCs). This is a harmful substance contained in large quantities.

Accordingly, the so-called New Car Syndrome, which continuously releases volatile organic compounds including formaldehyde, which is harmful to the human body, adversely affects the health of the human body, has emerged as an important environmental problem following the sick house syndrome. In addition, since the harmful substances are not ventilated and removed due to the unique closure properties of the vehicle as well as a new vehicle, the residual time of volatile organic compounds in the vehicle of the hazardous substances may be increased, which may adversely affect the health of the vehicle occupants.

Various research and development is in progress to prevent the new car syndrome as described above.

As a result of such research and development, a composition using a photocatalyst that receives light and decomposes volatile organic compounds has been developed. However, the composition using the photocatalyst receives light and decomposes the volatile organic compound, and thus has no other problem. In addition, since the price of the photocatalyst is very expensive, the composition using the catalyst also has a problem that it must be very expensive.

For example, Korean Patent Laid-Open Publication No. 10-2001-0100052 (published on November 14, 2001) uses a photocatalyst as a main raw material and contains a refractory pigment, a silane-based binder, an antimicrobial agent, a flow inhibitor, and the like. Removal and antimicrobial photocatalyst coating compositions are disclosed.

Such a photocatalyst coating composition has a characteristic of blocking volatile organic compounds relatively effectively by the action of the photocatalyst. However, since the price of the photocatalyst is very expensive, the photocatalyst coating composition is also very expensive, and the photocatalyst coating composition has a problem in that it does not exert an effect without light.

In order to solve this problem, research and development of an inexpensive composition capable of blocking volatile organic compounds without using a very expensive photocatalyst are being conducted.

For example, Korean Patent Publication No. 0613877 (October 31, 2005) discloses jade powder, titanium dioxide, stone powder, ceramic binder in a mixture of water, a water soluble dispersant, a water soluble organic thickener, and an additive. A paint interior material containing an jade component formed by mixing a metal is disclosed.

However, these paint interior materials also have a high price, there is a problem that volatile organic compounds are emitted from the paint component itself may adversely affect the human body.

Accordingly, a first object of the present invention is to provide a coating composition for blocking harmful substances, which is coated on various interior materials to block volatile organic compounds emitted from the interior materials.

In addition, a second object of the present invention is to provide a method for preparing a coating composition for blocking harmful substances that blocks volatile organic compounds emitted from various interior materials.

In order to achieve the first object of the present invention described above, in one embodiment of the present invention, 100 parts by weight of alkaline ionized water, 1.5 to 2.5 parts by weight of methanol, 4.0 to 5.0 parts by weight of hydrogen peroxide, 1.5 to 2.0 parts by weight of sodium chloride, isopropyl methyl There is provided a coating composition for blocking harmful substances formed by heating a mixture of 0.5 to 0.8 parts by weight of phenol, and 1.0 to 5.0 parts by weight of Sansevieria extract at 60 to 70 ° C. for 40 to 50 minutes and quenching to room temperature.

In addition, in order to achieve the second object of the present invention, an embodiment of the present invention comprises the steps of preparing alkaline ionized water; 100 parts by weight of alkaline ionized water, 1.5 to 2.5 parts by weight of methanol, 4.0 to 5.0 parts by weight of hydrogen peroxide, 1.5 to 2.0 parts by weight of sodium chloride, 0.5 to 0.8 parts by weight of isopropyl methylphenol, and 1.0 to 5.0 parts by weight of Sansevieria extract Forming a; Heating the mixture for 40 to 50 minutes to form a composition solution; And it provides a method for producing a coating composition for blocking harmful substances comprising the step of quenching the composition to room temperature.

The coating composition for blocking harmful substances according to the present invention has an effect of being coated on various interior materials to effectively block volatile organic compounds emitted from the various interior materials so as not to adversely affect the human body.

In addition, the coating composition for blocking harmful substances produced according to the present invention can simplify the manufacturing process can significantly reduce the manufacturing cost.

The coating composition for blocking harmful substances of the present invention will be described in detail with reference to one embodiment.

The coating composition for blocking harmful substances of the present invention is 100 parts by weight of alkaline ionized water, 1.5 to 2.5 parts by weight of methanol, 4.0 to 5.0 parts by weight of hydrogen peroxide, 1.5 to 2.0 parts by weight of sodium chloride, 0.5 to 0.8 parts by weight of isopropyl methylphenol, and Sansevieria extract It is comprised using the mixture which 1.0-5.0 weight part mixture mixes uniformly.

In the present invention, alkaline ionized water is used as a solvent in order to effectively dissolve various components used to prepare the coating composition, and at the same time to compact and dense the structure of the coating layer formed by spraying the prepared coating composition on the surface of the interior material. .

Electrolysis of water separates the anion-charged alkaline ionized water and the cation-charged acidic ionized water. In the present invention, by dissolving isopropyl methylphenol, which is an antimicrobial agent, into finer particles, alkaline ionized water is used as a solvent in order to make the structure of the coating layer formed by the coating composition containing the isopropyl methylphenol compact and dense. .

Water does not exist in a state where water molecules are uniformly distributed, but exists in a state where a large number of water molecules are clustered together, and the particle diameter of the dissolved solid becomes smaller as the size of the cluster of water molecules decreases. There is this.

The size of the cluster of water molecules as described above can be measured by a nuclear magnetic resonance measuring instrument (NMR). In general, tap water has a large size of clusters of water molecules, thereby increasing the size of isopropyl methylphenol particles dissolved in tap water, which results in a loose texture of the coating layer formed by the coating composition. When the coating layer formed by the coating composition is roughly formed as described above, since the function of blocking the volatile organic compound is greatly reduced, the tap water or purified water obtained by simply purifying tap water is used to prepare the coating composition of the present invention. It is very difficult to do.

However, as the water is highly electrolyzed and charged with a large amount of anions, the size of clusters of water molecules tends to decrease. Accordingly, in the present invention, the water is electrolyzed and separated from the acidic ionized water, whereby the anion is charged in a large amount to form a coating composition using alkaline ionized water having a size of water molecular clusters finer than that of general tap water as a solvent. As described above, when alkaline ionized water having a fine cluster size is used as a solvent by highly electrolyzing water to charge an anion in a large amount, isopropyl methylphenol is dissolved into finer particles, and the isopropyl methylphenol is contained. The coating layer formed by the coating composition is tightly and densely organized.

Using the alkaline ionized water as a solvent, a mixture which is an intermediate for preparing a coating composition is formed.

The mixed substance according to one embodiment of the present invention contains 1.5 to 2.5 parts by weight of methanol based on 100 parts by weight of alkaline ionized water as a solvent.

Methanol included in the mixture has a much higher vapor pressure than ethanol, providing volatility to the coating composition constructed from the mixture. The coating composition of the present invention is rapidly volatilized by methanol, so that the moisture content of the coating layer formed by the coating composition is rapidly reduced, so that the structure of the coating layer is compact and dense.

If the amount of methanol contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 1.5 parts by weight, the volatility of the coating composition constituted from the mixture is lowered, and the content of methanol contained in the mixture based on 100 parts by weight of alkaline ionized water is 2.5 parts by weight. When the amount is exceeded, methanol contained in the coating composition constituted from the mixture may adversely affect the human body.

In addition, the mixture according to an embodiment of the present invention contains 4.0 to 5.0 parts by weight of hydrogen peroxide based on 100 parts by weight of alkaline ionized water as a solvent.

Hydrogen peroxide included in the mixture is well soluble in water, ethanol, and ether, and some of the hydrogen ions of the hydrogen peroxide in the aqueous solution dissociate, resulting in weak acidity. Accordingly, since oxygen is generated by dissociation of hydrogen peroxide, the disinfecting action is very excellent.

When the content of hydrogen peroxide contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 4.0 parts by weight, the disinfecting action of the coating composition constituted from the mixture is reduced, and the content of hydrogen peroxide contained in the mixture based on 100 parts by weight of alkaline ionized water is 5.0. When the weight part is exceeded, the coating composition constituted from the mixture may be acidified, thereby lowering physicochemical properties.

In addition, the mixture according to an embodiment of the present invention contains 1.5 to 2.0 parts by weight of sodium chloride based on 100 parts by weight of alkaline ionized water as a solvent.

Sodium chloride contained in the mixture provides an antiseptic function to the coating composition of the present invention and at the same time serves to promote the dissolution of isopropyl methylphenol, an antimicrobial agent, in alkaline ionized water.

If the content of sodium chloride contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 1.5 parts by weight, the isopropyl methylphenol is not properly dissolved in the mixture, and the content of sodium chloride contained in the mixture based on 100 parts by weight of alkaline ionized water is 2.0. Exceeding the parts by weight makes it difficult to control the concentration of the mixture due to the excessive use of sodium chloride.

In addition, the mixture according to an embodiment of the present invention contains 0.5 to 0.8 parts by weight of isopropyl methylphenol based on 100 parts by weight of alkaline ionized water as a solvent.

Isopropyl methylphenol in the mixture is an artificial synthesis of thymol, a volatile oil extracted from the liana, which has been used as a folk medicine for centuries. The isopropyl methylphenol has hypoallergenic and low sensitivity, and is excellent in sterilization and anti-oxidation, and has excellent physical and chemical properties.

If the mixture is less than 0.5 parts by weight in the content of isopropyl methylphenol contained in 100 parts by weight of alkaline ionized water, the sterilization and anti-oxidation functions of the coating composition constituted from the mixture are lowered, and the mixture is based on 100 parts by weight of alkaline ionized water. When the content of isopropyl methylphenol contained more than 0.8 parts by weight, crystals of isopropyl methylphenol may be formed in the mixture.

In addition, the mixture according to an embodiment of the present invention contains 1.0 to 5.0 parts by weight of the Sansevieria extract based on 100 parts by weight of alkaline ionized water as a solvent.

The sansevieria extract included in the mixture contains peroxidase, which is an enzyme present in various organisms such as microorganisms, fungi and plants, and serves to oxidize aromatic organic compounds. Since peroxidase can protect the living body from the toxicity of oxygen radicals, it is mainly used as a medical material that can prevent apoptosis, inhibit cancer and proliferate bacteria, and is also used to treat various environmental pollutants. Oxidase is used.

When the content of the sansevieria extract contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 1.0 part by weight, the sterilization function and the anti-oxidation function of the coating composition constituted from the mixture are lowered, and the mixture is contained based on 100 parts by weight of alkaline ionized water. When the content of the Sansevieria extract exceeds 5.0 parts by weight, the function of the hydrogen peroxide contained in the mixture may be reduced.

A mixture formed of the above components and contents is used as an intermediate to form a coating composition for blocking harmful substances.

The mixture configured as described above is heated at 60 to 70 ° C. for 40 to 50 minutes to be converted into the composition liquid.

If the temperature for heating the mixture is less than 60 ° C, the mixture is not converted into the composition liquid, and if the temperature for heating the mixture exceeds 70 ° C, the mixture may be denatured due to the high temperature.

In addition, if the time for heating the mixture is less than 40 minutes, the mixture is not properly converted to the composition liquid, and if the time for heating the mixture exceeds 50 minutes, the concentration is increased more than necessary due to excess evaporation of the mixture.

The composition liquid formed as described above is forcibly quenched to room temperature, thereby obtaining a coating composition for blocking harmful substances of the present invention in a liquid form.

As described above, the coating composition for blocking harmful substances of the present invention can be very simple to reduce the manufacturing cost.

An embodiment of the method for preparing a coating composition for blocking harmful substances of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the procedure of the manufacturing method of the coating composition for blocking harmful substances according to an embodiment of the present invention.

Referring to Figure 1, first, the method for producing a coating composition for blocking harmful substances according to an embodiment of the present invention includes preparing an alkaline ionized water (step S10).

In the present invention, alkaline ionized water is used as a solvent in order to dissolve various components used to prepare the coating composition and to make the structure of the coating layer formed after the prepared coating composition is sprayed on the interior material and the moisture is evaporated. .

Electrolysis of water separates the anion-charged alkaline ionized water and the cation-charged acidic ionized water. In the present invention, the alkali ionized water is used as a solvent to dissolve the finer particles of the coating layer formed by the coating composition containing the isopropyl methylphenol by dissolving isopropyl methylphenol, which is an antimicrobial agent, into finer particles. will be.

Water is not a state in which water molecules are uniformly distributed, but is a state in which a plurality of water molecules are clustered together, and the particle diameter of the dissolved solid content becomes smaller as the cluster size of water molecules decreases. It is shown.

As water is highly electrolyzed and the anions are charged in a large amount, the size of clusters of water molecules tends to decrease. Therefore, in the present invention, by electrolyzing water to separate the acidic ionized water, the coating composition is constituted by using alkaline ionized water having a large amount of anions charged in the size of fine water molecular clusters as a solvent. As described above, when alkaline ionized water having a fine cluster size is used as a solvent by highly electrolyzing water to charge an anion in a large amount, isopropyl methylphenol is dissolved into finer particles, and the isopropyl methylphenol is contained. The coating layer formed by the coating composition is tightly and densely organized.

Alkaline ionized water as described above is used as a solvent to form a mixture which is an intermediate for preparing a coating composition.

In addition, the method for producing a coating composition for blocking harmful substances according to an embodiment of the present invention is 100 parts by weight of alkaline ionized water, 1.5 to 2.5 parts by weight of methanol, 4.0 to 5.0 parts by weight of hydrogen peroxide, 1.5 to 2.0 parts by weight of sodium chloride, isopropyl 0.5 to 0.8 parts by weight of methylphenol, and 1.0 to 5.0 parts by weight of the Sansevieria extract are uniformly mixed to form a mixture (step S20).

Methanol has a much higher vapor pressure than ethanol, providing volatility to the coating composition constructed from the mixture. The coating composition of the present invention is rapidly volatilized by methanol, so that the moisture content of the coating layer formed by the coating composition is rapidly reduced, so that the structure of the coating layer is compact and dense.

When the content of methanol contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 1.5 parts by weight, the volatility of the coating composition constituted from the mixture is lowered. When the content of methanol contained in the mixture exceeds 2.5 parts by weight, the mixture is formed from the mixture. Methanol contained in the coating composition may adversely affect the human body.

Hydrogen peroxide dissolves well in water, ethanol, and ether, and slightly dissociates hydrogen ions of hydrogen peroxide in an aqueous solution, resulting in weak acidity. At this time, oxygen is generated by dissociation of hydrogen peroxide, so disinfection is excellent.

When the content of hydrogen peroxide contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 4.0 parts by weight, the disinfecting action of the coating composition composed from the mixture is lowered. When the content of hydrogen peroxide in the mixture exceeds 5.0 parts by weight, it is formed from the mixture. The coating composition may be acidified, resulting in lowered physicochemical properties.

Sodium chloride provides an antiseptic function to the coating composition of the present invention and at the same time serves to promote the dissolution of isopropyl methylphenol, an antimicrobial agent, in alkaline ionized water.

If the content of sodium chloride in the mixture is less than 1.5 parts by weight based on 100 parts by weight of alkaline ionized water, isopropyl methylphenol is not properly dissolved in the mixture. If the content of sodium chloride in the mixture exceeds 2.0 parts by weight, excessive use of sodium chloride is used. This makes it difficult to control the concentration of the mixture.

Isopropyl methylphenol is an artificial synthesis of thymol, a volatile oil extracted from the family Asteraceae. It is hypoallergenic and low sensitive, and has excellent sterilization and anti-oxidation functions, and has excellent physical and chemical properties.

When the mixture is less than 0.5 parts by weight in the content of isopropyl methylphenol contained on the basis of 100 parts by weight of alkaline ionized water, the sterilization function and the anti-oxidation function of the coating composition constituted from the mixture is lowered, and the content of isopropyl methylphenol contained in the mixture If the content exceeds 0.8 parts by weight, crystals of isopropyl methylphenol may be produced in the mixture.

The sansevieria extract included in the mixture contains peroxidase, which is an enzyme present in various organisms such as microorganisms, fungi and plants, and serves to oxidize aromatic organic compounds. Since peroxidase can protect the living body from the toxicity of oxygen radicals, it is mainly used as a medical material that can prevent apoptosis, inhibit cancer and proliferate bacteria, and also treat peroxidase to treat various environmental pollutants. Is being used.

Sanseria extract refers to a supernatant obtained by adding phosphate buffer to the washed sanseria, put it in a homogenizer, and milling at 10,000 to 15,000 rpm, followed by centrifugation at 12,000 to 15,000 rpm. The weight ratio of the washed sansevieria and the phosphate buffer is preferably mixed at a weight ratio of 10: 1 to 20: 1, and the concentration of the phosphate buffer is preferably maintained at pH 6 to pH 8. In addition, it is preferable to put the mixed sansevieria and phosphate buffer in the siliceous group for 1 to 2 minutes, and to grind. And it is preferable to centrifug the ground plant for 20 to 30 minutes to obtain a supernatant.

When the content of the sansevieria extract contained in the mixture based on 100 parts by weight of alkaline ionized water is less than 1.0 part by weight, the sterilization function and the anti-oxidation function of the coating composition constituted from the mixture are lowered, and the mixture is included based on 100 parts by weight of alkaline ionized water. When the content of the Sansevieria extract exceeds 5.0 parts by weight, the function of the hydrogen peroxide contained in the mixture may be reduced.

To prepare a coating composition for blocking harmful substances using a mixture formed of the above components and contents.

In addition, the method for producing a coating composition for blocking harmful substances according to an embodiment of the present invention includes the step of heating the mixture for 40 to 50 minutes to form a composition (step S30).

Specifically, the mixture formed of the components and contents in step S20 is heated at 60 to 70 ° C. for 40 to 50 minutes to convert the composition into a composition liquid.

If the temperature for heating the mixture is less than 60 ° C, the mixture is not converted into the composition liquid, and if the temperature for heating the mixture exceeds 70 ° C, the mixture may be denatured due to the high temperature.

In addition, if the time for heating the mixture is less than 40 minutes, the mixture is not properly converted to the composition liquid, and if the time for heating the mixture exceeds 50 minutes, the mixture rises more than necessary due to the excess evaporation of water.

In addition, the method for producing a coating composition for blocking harmful substances according to an embodiment of the present invention includes the step of quenching the composition liquid to room temperature (step S40).

That is, the composition is placed in a quenching apparatus and forcedly quenched to room temperature to prepare a coating composition for blocking harmful substances of the present invention, which forms a liquid form.

Spraying the prepared coating composition for blocking harmful substances on the interior material and dried to form a coating layer that can block the volatile organic compounds emitted from the interior material.

As described above, the coating composition for blocking harmful substances prepared according to the present invention can reduce the manufacturing cost because the manufacturing process is simple.

While the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

Hereinafter, the present invention will be described in detail with reference to a preferred embodiment. However, the following Example is for illustrating this invention concretely, It does not limit only to this.

<Examples>

1. Water was electrolyzed to give alkaline ionized water separated from acidic ionized water.

2. Into the reactor, 8000 ml (8000 g) of alkaline ionized water, 200 ml (158 g) of methanol, 200 ml (360 g) of hydrogen peroxide, 150 g of sodium chloride, 50 g of isopropyl methylphenol, and 300 g of Sanseria extract were added to the reactor. Stir at 2000 rpm for 20 minutes to form a mixture.

3. The mixture was heated at 65 ° C. for 45 minutes to form a composition solution.

4. The composition solution was placed in a quenching apparatus and forcedly quenched to room temperature to prepare a coating composition for blocking harmful substances in liquid form.

Experimental Example 1

In order to evaluate the volatile organic compound blocking function of the sample of the coating composition for blocking harmful substances prepared by the above embodiment, formaldehyde (HCHO), which is a representative volatile organic compound, was subjected to a deodorizing function evaluation experiment.

The deodorizing function evaluation experiment was conducted by the Korea Building Materials Testing and Research Institute (1465-4, Seocho 3-dong, Seocho-gu, Seoul) to support research and development on building materials.

The deodorization function evaluation experiment was performed based on KICM-FIR-1085 which is a commonly used harmful gas deodorization experiment method, the results are shown in Table 1 below.

Comparison of Formaldehyde Deodorization Test Results of Harmful Substance Coating Composition division Blank
HCHO concentration (ppm) Example Elapsed time (minutes) HCHO concentration (ppm) Deodorization rate (%) 0 82 82 - 30 78 17 78.2 60 75 5 93.3 90 71 2 97.2 120 67 One 98.5

Table 1 shows that the coating composition for blocking harmful substances of the present invention is very excellent in the deodorizing function of volatile organic compounds such as formaldehyde.

A graph of the results of the deodorizing function evaluation experiment of the volatile organic compounds is shown in FIG. 2.

Experimental Example 2

An antimicrobial experiment was conducted on a sample of the coating composition for blocking harmful substances prepared by the above example.

The antimicrobial experiment was performed based on KICM-FIR-1002 (used strain: Escherichia coli ATCC 25922) which is a commonly used antimicrobial test method.

That is, the strain was applied to the Examples and the Blank, respectively, and the photographs of the Examples were taken 24 hours after the time of application.

Figure 3 is a photograph of the antimicrobial experiment results taken when the strain applied time of the coating composition for blocking harmful substances according to an embodiment of the present invention, Figure 4 is a strain of the coating composition for blocking harmful substances according to an embodiment of the present invention. It is a photograph taken the result of antibacterial experiment 24 hours after the application.

In the photograph of FIG. 3, the strain applied to the sample can be clearly identified with the naked eye, while the strain applied to the sample is almost disappeared in the photograph of FIG. 4.

The antimicrobial function comparison test results are shown in Table 2 below.

Comparison of antimicrobial test results of coating composition for blocking harmful substances division Blank
Bacterial Concentration (CFC / 40p) Example Elapsed time Bacterial Concentration (CFC / 40p) Bacterial Reduction (%) 423 423 - 24 hours 2875 One 99.8

In Table 2, the coating composition for blocking harmful substances of the present invention was shown to have an excellent antibacterial function against various bacteria.

Experimental Example 3

Experiments were performed to measure the amount of formaldehyde and volatile organic compounds (VOC) before and after construction in the field using samples of the coating composition for blocking harmful substances prepared by the above examples.

(1) How to measure

The measured value at the beginning of the measurement was observed for more than 60 minutes of the change in the amount of the substance to be measured, and after confirming stabilization, the value displayed in real time on the measuring device was made into the atmospheric concentration of formaldehyde and VOC. The measured value at this time was made into the average value.

When measuring the VOC concentration in IAQ equipment, when the target material is isobutylene compound Correction factor Isobutylene 1.00 benzene 0.53 Ethyl benzene 0.52 Styrel 0.40 toluene 1.70 Xylene 0.43

* Measuring equipment: XP308B from New Cosmos of Japan and IAQ-RAE PGM-5210 Indoor Air Quality Monitor of RAE System (provided by client)

(2) Measurement result

Formaldehyde and VOC measurement values before and after construction as measured by the above measurement methods are shown in Table 4.

Formaldehyde and VOC Field Measurements Date of Measurement
(Measurement time) Measurement result Measuring conditions Formaldehyde
(ppm) VOC
(ppm) Temperature
(℃) Relative humidity
(RH /%)

Before construction 2007.10.10
(13:00 pm) 0.86 1.20 24 68 2007.10.15
(11:00 am) 0.76 1.00 23 71 2007.10.30
(13:30 pm) 0.76 0.75 22 56 After construction 2007.11.5
(14:30 pm) N / D 0.14 15 49

* Measurement place: At the request of the sponsor, one room of 602 GS APT 201 dong, Yeoksam-dong, Gangnam-gu, Seoul was selected as the test site.

As in Experimental Examples 1 to 4, the coating composition for blocking harmful substances according to the present invention was confirmed that the volatile organic compound blocking function and antibacterial function is excellent.

1 is a flow chart of the manufacturing method of the coating composition for blocking harmful substances according to an embodiment of the present invention.

Figure 2 is a graph of the deodorizing function evaluation test results of the coating composition for blocking harmful substances according to an embodiment of the present invention.

Figure 3 is a photograph of the antimicrobial experiment results of the coating composition for blocking harmful substances according to an embodiment of the present invention 1.

Figure 4 is a photograph of the antimicrobial experiment results of the coating composition for blocking harmful substances according to an embodiment of the present invention 2.

Claims (3)

100 parts by weight of alkaline ionized water, 1.5 to 2.5 parts by weight of methanol, 4.0 to 5.0 parts by weight of hydrogen peroxide, 1.5 to 2.0 parts by weight of sodium chloride (NaCl), 0.5 to 0.8 parts by weight of isopropyl methylphenol and 1.0 to 5.0 parts by weight of sansevieria extract The mixture of parts is heated for 40 to 50 minutes at 60 to 70 ℃, quenched to room temperature to form a coating composition for blocking harmful substances. The method of claim 1, wherein the alkaline ionized water is a coating composition for blocking harmful substances, characterized in that obtained by electrolytically separated from the acidic ionized water. The method of claim 1, wherein the sansevieria extract is a supernatant obtained by adding a phosphate buffer to the washed sansevieria, homogenized in a homogenizer, and milled at 10,000 to 15,000 rpm, followed by centrifugation at 12,000 to 15,000 rpm again. Coating composition for.

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