KR102001039B1 - heat-resistance insulation composition for preventing phenomenon of heat island - Google Patents

Abstract

The present invention relates to a heat insulating paint composition comprising: soda lime borosilicate glass (SBG), an acrylic binder, an oxide ceramic, a silane coupling agent, ethyl hydroxyethyl cellulose and water. The heat insulating paint composition forms a thin film with low thermal conductivity by simple coating to prevent external heat from being transferred to the room and internal heat from escaping to the outside at the same time, thereby maximizing heating and cooling efficiency and blocking the heat island phenomenon. In addition, the heat insulating paint composition is used for insulation materials of various facilities, industrial facilities and ships using ultra light and thin thickness properties.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat-

The present invention relates to an insulating coating composition comprising soda lime borosilicate glass (SBG), an acrylic binder, an oxide-based ceramic, a silane coupling agent, and ethylhydroxyethylcellulose.

Conventional houses, apartments, schools, factories, offices and various facilities are made of concrete and iron (metal), and in the hot summer, heat island phenomenon absorbing solar heat, The temperature rises.

The heat island phenomenon is a phenomenon in which the temperature of the city is higher than the surrounding area due to the influence of air pollution or artificial heat. These heat island phenomena are mainly caused by various artificial heat such as smoke emitted from the chimney of a factory, exhaust gas of automobile exhaust, air conditioner, and radiator, and air pollution caused thereby. In addition, artificial facilities such as asphalt and concrete have a high efficiency of absorbing light and emit them outwardly in the form of infrared radiation, or the green area decreases gradually, resulting in a heat island phenomenon.

Therefore, in order to control the heat island phenomenon, the air conditioner is operated to lower the room temperature. In the cold winter season, the heater is operated to heat the air. As a result, electric power costs or heating and cooling costs are considerable, and the carbon dioxide emitted from all of these processes increases in the atmosphere, thus affecting global warming and abnormal weather. It is known that advanced countries are using the Energy Star mark certification system for energy-saving paints to conserve energy and preserve the global environment.

In order to suppress the increase in cost due to heating and cooling and to overcome the environmental problems, recent buildings have been equipped with various kinds of insulation materials such as styrofoam and urethane foam to maintain the compulsory cooling and heating facilities and the optimal residential environment, have. However, it is not an inefficient and economical method because it is accompanied by the cumbersome process and the volume and the high cost of the insulation. Further, since the heat insulating effect is not known only by the existing heat insulating material, the thickness of the heat insulating material becomes thicker and the weight increases in order to increase the energy utilization efficiency in the cooling and heating.

Therefore, there is an attempt to minimize heat accumulation and absorption by using a coating material with relatively low thickness and light weight. However, the urethane waterproof coating, which is mainly used as an exterior coating material for a building, Cool-roof paint, which is a conventional insulating paint, has an effect of lowering the room temperature, but has a lower effect than the conventional coating material. However, TiO ₂ , which is an excess amount of white pigment in the paint, Cracks and deterioration of adhesive strength, it is necessary to improve the life span of buildings and energy saving.

In order to solve the above-described problems, the inventor of the present invention has found that, in order to fundamentally solve the above-described problems, the present inventors have found that the above-mentioned problems can be solved by using a soda lime borosilicate glass (SBG), an acrylic binder, an oxide ceramics, a silane coupling agent, ethylhydroxyethylcellulose, The present inventors have completed the present invention by confirming that the heat insulating paint exhibits remarkably high heat shielding and heat insulating effect while having an ultra light weight and a thin thickness.

One object of the present invention is to provide an insulating coating composition comprising soda lime borosilicate glass (SBG), an acrylic binder, an oxide-based ceramic, a silane coupling agent, and ethylhydroxyethylcellulose .

Hereinafter, the present invention will be described in more detail.

On the other hand, each description and embodiment disclosed herein can be applied to each other description and embodiment. That is, all combinations of the various elements disclosed herein are within the scope of the present invention. Further, the scope of the present invention can not be said to be limited by the following detailed description.

In addition, those of ordinary skill in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described in this application. Further, such equivalents are intended to be included in the present invention.

In order to solve the above-mentioned problems, the present invention provides, in one aspect, the present invention is a soda lime borosilicate glass (SBG), an acrylic binder, an oxide ceramics, a silane coupling agent, and ethylhydroxyethyl cellulose To provide an insulating coating composition.

The heat insulating coating composition is a heat insulating coating composition which reflects solar heat and the remaining heat from the outside passes through a void layer existing in the heat insulating coating composition of the present invention, The effect of maximizing the adiabatic effect is obtained.

In the present invention, 'soda lime borosilicate glass (SBG)' refers to a glass having heat resistance, and in particular, it has a super structure structure, Can be used without limitation as long as it can block or reduce the heat insulation effect. The soda lime borosilicate glass may include, but is not limited to, a material selected from the group consisting of silica, calcium oxide, sodium oxide, boron, and mixtures thereof. The soda lime borosilicate glass may contain 3 to 20% by weight, 5 to 15% by weight, or 7 to 12% by weight of the silica and 3 to 20% by weight, 5 to 15% by weight, Or 7 to 10% by weight, and the sodium oxide may be contained in an amount of 2 to 20% by weight, 5 to 10% by weight, or 7 to 9% by weight, and the boron may be contained in an amount of 1 to 8% To 6% by weight or from 3 to 5% by weight.

The density of the soda lime borosilicate glass may be 0.1 to 0.5 mg / ml, 0.1 to 0.3 mg / ml, or 0.2 to 0.25 mg / ml. When the soda lime borosilicate glass has an ultra-light weight with such a density as described above, since the inside of the particle has a void layer, it is scattered in the coating film when it is not deposited in the coating material to form a hard coating film, . ≪ / RTI > In particular, unlike other amorphous fillers, it acts like millions of ball bearings in a spherical shape to impart fluidity to the fluid, thereby maximizing the heat insulation performance by increasing the filling rate in the coating. The particle diameter of the soda lime borosilicate glass may be 100 μm or less, 80 μm or less, or 60 μm or less. When the particle diameter of the soda lime borosilicate glass is larger than 100 m, the mechanical strength of the particles may be lowered, resulting in a defect that the surface of the particles may be broken. Further, the heat insulating coating composition of the present invention may contain 5 to 40% by weight, 10 to 20% by weight, or 12 to 18% by weight of the soda lime borosilicate glass.

In particular, when the sodalime borosilicate glass is included in the heat insulating coating composition, the heat insulating performance is high and the bending property is much better than that of the heat insulating coating composition containing aluminum silicate because the thermal conductivity is low. Therefore, the heat insulating coating composition comprising the soda lime borosilicate glass can remarkably reduce the heat and insulation effect, thereby drastically reducing the cooling / heating ratio or the power consumption, and can contribute to the improvement of the environment by reducing the amount of carbon dioxide emissions. When the heat insulating coating composition is applied, it has been confirmed that the thermal conductivity is low, so that it is possible to prevent the burns of the workers and to secure the stability such as expansion of the city gas pipe and the like due to external heat.

In the present invention, 'oxide based ceramics' means a ceramic of metal oxides, and any ceramics capable of reducing thermal conductivity and improving surface strength and appearance can be used without limitation. The oxide-based ceramics are preferably made of SiO ₂ , Al ₂ O ₃ , Fe ₂ O ₃ , CaO, MgO, Na ₂ O, K ₂ O, TiO ₂ , ZnO, ZrO ₂ , P ₂ O ₅ , May be selected in the group. Further, the heat insulating coating composition of the present invention may contain 1 to 20% by weight, 5 to 10% by weight, or 7 to 9% by weight of the oxide-based ceramics.

The 'acrylic binder' in the present invention means a binder obtained by polymerization reaction with other monomers including an acrylate monomer. In particular, it can be used without limitation as long as it provides the cohesive force to the ceramic and the adhesion to the conductor, and maximizes the filling property of the soda lime borosilicate glass to minimize the thermal conductivity of the coating film. The acrylic binder may be a styrene-acrylic copolymer including a styrene-based monomer and an acrylate-based monomer, but is not limited thereto. Further, the heat insulating coating composition of the present invention may contain 20 to 70 wt%, 40 to 50 wt%, or 42 to 47 wt% of the acrylic binder.

The acrylate monomer constituting the acrylic binder may include, but is not limited to, one or more monomers selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate and butyl acrylate.

In the present invention, the 'silane coupling agent' may be used without limitation as long as it is a binder and serves as a bridge for bonding inorganic materials such as paints, concrete walls and roof sleeves. Preferably, the silane coupling agent may be represented by the following formula (1)

[Chemical Formula 1]

Here, R ¹ , R ² , and R ³ are the same or different and each is an alkyl group having 1 to 5 carbon atoms, and R ⁴ may be a linear or branched alkyl group having 1 to 18 carbon atoms, It does not. Further, the heat insulating coating composition of the present invention may contain 0.1 to 4.0% by weight, 0.5 to 2.0% by weight, or 0.8 to 1.5% by weight of the silane coupling agent.

In addition, the heat insulating coating composition of the present invention may contain 0.1 to 4.0% by weight, 0.5 to 2.0% by weight, or 0.8 to 1.5% by weight of ethylhydroxyethylcellulose.

Further, the heat insulating coating composition of the present invention may further include at least one selected from the group consisting of neutralizing agents, cryo stabilizers, surfactants, preservatives, dispersants, defoamers, and thickeners.

The term "neutralizing agent" used in the present invention is used to neutralize an acidic or alkaline substance. Particularly, it means a substance that improves the storage stability of the composition by controlling the pH of the composition. Any material conventionally used in the art can be used without limitation have. Preferably, the neutralizing agent is selected from the group consisting of 2-amino-2-methyl-1-propanol, tromethamine, triethanolamine, sodium hydroxide, potassium hydroxide, aminomethylpropanol, aminomethylpropanediol, But it is not limited thereto. Further, the heat insulating coating composition of the present invention may contain 0.05 to 1.0 wt%, 0.1 to 0.5 wt%, or 0.2 to 0.4 wt% of the neutralizing agent.

In the present invention, the term 'cryoprotectant' means a substance used for stabilizing other components contained in the composition at a low temperature, and may be used without limitation as long as it is commonly used in the art. Further, the heat insulating coating composition of the present invention may contain 0.3 to 3.0% by weight, 0.5 to 1.0% by weight, or 0.6 to 0.8% by weight of the freezing stabilizer.

In the present invention, 'surfactant' means a substance that adsorbs at the interface to reduce the surface tension so that the organic material and the hydrophilic material are mixed well, and any material conventionally used in the art can be used without limitation. Preferably the surfactant is selected from the group consisting of polyoxyethylene alkylamine, polyoxyethylene diamine, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkylphenyl aryl ether and A mixture thereof, and the like, but is not limited thereto. Further, the heat insulating coating composition of the present invention may contain 0.05 to 1.0 wt%, 0.1 to 0.5 wt%, or 0.2 to 0.4 wt% of the above surfactant.

In the present invention, the term "preservative" means a component that inhibits the decay of a substance and can be used without limitation as long as it is commonly used in the art. Further, the heat insulating coating composition of the present invention may contain 0.05 to 1.0% by weight, 0.1 to 0.5% by weight, or 0.2 to 0.4% by weight of the preservative.

'Dispersing agent' in the present invention means a material capable of dispersing the particles uniformly in the solvent when the powder is dispersed and suspended in the liquid, and in particular, the acrylic binder and water can be mixed to improve the workability. The dispersant can be used without limitation as long as it is conventionally used in the art. Further, the heat insulating coating composition of the present invention may contain 0.05 to 1.0 wt%, 0.1 to 0.5 wt%, or 0.2 to 0.4 wt% of the dispersant.

In the present invention, the term "defoaming agent" means a material capable of removing harmful bubbles in the composition, and may be used without limitation as long as it is commonly used in the art. Further, the heat insulating coating composition of the present invention may contain 0.3 to 3.0 wt%, 0.5 to 1.0 wt%, or 0.6 to 0.8 wt% of the defoaming agent.

In the present invention, the term 'thickening agent' refers to a material that increases the viscosity of the composition, and may be used without limitation as long as it is commonly used in the art. Further, the heat insulating coating composition of the present invention may contain 0.05 to 1.0% by weight, 0.1 to 0.5% by weight, or 0.2 to 0.4% by weight of the thickener.

In one embodiment of the present invention, water may be included in the composition in an amount of 10 to 60 wt%, 14 to 50 wt%, and 20 to 30 wt%.

In one embodiment of the present invention, an adiabatic coating composition comprising soda lime borosilicate glass (SBG), an acrylic binder, an oxide-based ceramic, a silane coupling agent, and ethylhydroxyethylcellulose, It is possible to drastically reduce the heating and cooling costs and power consumption when the neutralizer, the freezing stabilizer, the surfactant, the preservative, the dispersant, the antifoaming agent and the thickener are included, and can greatly contribute to the improvement of environment by reducing the carbon dioxide emission. Respectively. In addition, when the heat insulating coating composition is applied to a high-temperature steam line or the like, it is confirmed that the thermal conductivity is low, so that it is possible to prevent the burns of the workers and to secure the stability such as the expansion of the city gas pipe by the external heat. Furthermore, it is confirmed that it is a water-soluble coating composition having an ultra-light weight and ultra-thin characteristics with a thickness of about 1/20 or less, unlike the thickness of the heat insulating paint according to the energy saving design standards of existing buildings (the outer wall thickness is 65 mm or more and the interlayer bottom thickness is 20 mm or more) .

The heat insulating coating composition of the present invention forms a thin film having a low thermal conductivity by simple painting to prevent the external heat from being transferred to the room and maximizes the cooling and heating efficiency by blocking the external heat from escaping to the outside simultaneously, And can be used for heat insulation substrates for various facilities, industrial facilities, ships, and the like. Further, it can be used as an insulation material having a feature of ultra light weight and ultra thin film with a thickness of 1/20 or less as compared with conventional insulation materials.

Hereinafter, the present invention will be described more specifically with reference to Examples.

Example 1, Comparative Examples 1 and 2 are prepared by the following method.

Example 1

3 g of antifoam and 30 g of Texanol were added to a mixture of 255 g of water, 3 g of a thickener, 5 g of a dispersant, 2 g of a neutralizer, 2 g of a preservative, 3 g of a surfactant and 7 g of a refrigerating stabilizer, and 90 g of titanium dioxide The mixture was stirred at a high speed for about 30 minutes. After confirming that the degree of dispersion softening of the mixture was 5 or more, 430 g of acrylic binder was added to the mixture while stirring, and 170 g of sodalime borosilicate glass (SBG) was slowly added thereto and stirred at low speed for about 30 minutes.

Comparative Example 1

3 g of antifoam and 30 g of Texanol were added to a mixture of 255 g of water, 3 g of a thickener, 5 g of a dispersant, 2 g of a neutralizer, 2 g of a preservative, 3 g of a surfactant and 7 g of a refrigerating stabilizer, and 90 g of titanium dioxide The mixture was stirred at a high speed for about 30 minutes. After confirming that the dispersion softening degree of the mixture was 5 or more, 430 g of an acrylic binder was added to the mixture while stirring, then 100 g of soda lime borosilicate glass (SBG) and 90 g of aluminum silicate were slowly added thereto, Lt; / RTI >

Comparative Example 2

3 g of antifoam and 30 g of Texanol were added to a mixture of 255 g of water, 3 g of a thickener, 5 g of a dispersant, 2 g of a neutralizer, 2 g of a preservative, 3 g of a surfactant and 7 g of a refrigerating stabilizer, and 90 g of titanium dioxide The mixture was stirred at a high speed for about 30 minutes. After confirming the dispersion softening degree of the mixture was 5 or more, 430 g of an acrylic binder was added to the mixture with stirring, 190 g of aluminum silicate was slowly added thereto, and the mixture was stirred at low speed for about 30 minutes.

Test Example 1 - Insulation performance test of insulating paint by model making

The heat insulation performance was tested by making a model and measuring the surface temperature of the back surface of the test piece at intervals of 1 second after applying heat to the upper part of the test piece of the paint of Example 1, the unpainted paint, the G paint and the S paint. Four zinc-coated steel sheets each having a width of X, a length of X, and a thickness of 45.5 cm, a width of 45.5 cm and a width of 0.35 cm were prepared, and three kinds of coatings for external walls were applied on one surface. And the painted surface was set to face the fixture. The center temperature of the inside of the steel box and the center temperature transferred to the back of the test body (uncoated side of the steel box) were measured. In order to eliminate the gap between the styrofoam box and the specimen, a total weight of 5.38 kg was installed at an equal load, and the fixture was installed at a position 27 cm away from the specimen. The surface temperature was measured at intervals of 1 second by installing a thermocouple on the back surface of the test body.

Adiabatic performance test measurement value Test body Styrofoam box center reach temperature (℃) Reached temperature of the test specimen (℃) division Primary measurement Secondary measurement Primary measurement Secondary measurement Unpainted 27.4 27.3 78.2 75.2 S company paint 27.0 26.9 70.8 69.0 G company paint 26.4 26.2 65.3 64.7 Example 1 25.7 25.7 60.3 58.3

The change in the center temperature of each specimen styrofoam box was measured. When the temperature was constant, not only the arrival temperature but also the temperature change during the temperature rise was the lowest in the case of Example 1, and there was a great difference in the heat insulation performance of each specimen have.

Test Example 2 - Insulation performance test of heat insulating coating composition by heating

A test sample was prepared as described below, and the heat insulating performance was tested by placing the test piece of the uncoated and general heat insulating coating composition of Example 1 on a heated frying pan reached to 100 ° C and measuring the time of completely melting the ice (15g) thereon. Three test specimens (tin plates) each having a width X length X thickness of 7 cm X 15 cm X 0.02 cm were prepared and coated with the coating material on one side of the test piece, I put it in a circular frame so that it does not deviate from the center.

Adiabatic performance test measurement value division Example 1 Unpainted General insulating paint composition Ice melting time 7 minutes 31 seconds 3 minutes 48 seconds 4 minutes 04 seconds

The results of Table 2 show that the time of completely dissolving the ice when applied in Example 1 of the present invention is about two times longer than that of the general heat insulating coating composition. This means that the heat insulating performance is very high at an extreme temperature (100 ° C) Respectively.

Test Example 3 - Fire resistance test of heat insulating coating composition by gas burner

A test sample was prepared as described below and the fire resistance performance test was conducted by measuring the time from the ignition to the extinguishment and the time until the test piece passed through the test piece by heating the test piece of the uncoated and general heat insulating coating composition of Example 1 with a gas burner. Three urethane foam sheets each having a size of X, X, and X each having a size of 30 cm X 30 cm X 5 cm were prepared and the coated surfaces of the test pieces coated with the respective paints on one side were heated with a gas burner (about 1000 ° C) .

Performance Test Measure division Example 1 Unpainted General insulating paint composition Digestion time 3 minutes 10 seconds 1 minute 30 seconds Penetration time Do not pierce After 5 seconds After 30 seconds

From the results of Table 3, it can be seen that when applied in Example 1 of the present invention, the flame is resistant to flame more than twice as much as that of a general heat insulating coating composition until the start of ignition of the gas burner and extinguishing. It was confirmed that the urethane foam of the test chain exhibits an excellent fire resistance performance not penetrating the flame. Here, the penetration time means the time when the urethane foam test substrate is completely burned and dissolved by the gas burner flame. In the case of unpainted paint, it penetrated instantly (within 5 seconds) after ignition, and it was confirmed that when applied in Example 1, excellent fire resistance performance was not penetrated at all during the extinguishing time.

Test Example 4 - Measurement of coating film properties (adhesion / bending property) of adiabatic paint

Adhesive strength and bending property were measured and compared for Example 1, Comparative Examples 1 and 2 and general insulating paint prepared above.

Adhesion was measured by applying ASTM D-3359 Knife Test procedure after coating the insulation coating with DFT 300u on tin plate and drying. The bendability test was performed by applying the paint onto a tin plate and drying and then measuring according to the ASTM D-522 Mandrel Bend procedure.

Thermal conductivity and film property measurement division Example 1 Comparative Examples 1 and 2 General insulating paint Adhesion Knif Test 5B 5B 5B Flexibility Bending 500 μm or more 450 탆 400 탆

From the results shown in Table 4, all of the adhesive strengths of the samples were satisfactory, but flexural strength (creep resistance) due to bending was measured to be highest in Example 1. It can be understood that the silane coupling agent contained in the heat insulating coating composition improves the adhesion between the coating material and the inorganic material substrate to increase the flexibility.

Test Example 5 - Measurement of Antistatic Function of Adiabatic Coating Composition

The antistatic function of the previously prepared Example 1, unpainted, was measured and compared as follows.

Two transparent plastic plates were prepared, and the number of styrofoam stuck to the styrofoam cut into a certain size was measured by using a towel and a backing (non-stuck surface) coated with the unpainted and Example 1, .

division Example 1 (Coating surface) Example 1 (uncoated surface) Unpainted amount none none 16 pieces

From the results of Tables 1 and 5, it was confirmed that when the coating of Example 1 of the present invention was applied to both the coated surface (front surface) and the uncoated surface (back surface) In this case, static electricity is generated by friction.

As can be seen from the test results shown in the above Table 1, the heat insulating paint prepared by using the heat insulating coating composition according to the present invention has excellent heat insulation effect, And it was confirmed that it was lower. It was also confirmed that the measurement result of Table 2 shows a large effect of cutting off and delaying the heat conducted from the frying pan heated under the same conditions as the composition of the general heat insulating coating material. Furthermore, the physical properties of the coatings in Table 4 were found to be important factors for the coating durability against external impacts, and it was found that the adiabatic performance can be maintained for a long time.

Taken together, in the case of containing both soda lime borosilicate glass (SBG), acrylic binder, oxide ceramics, silane coupling agent, and ethylhydroxyethyl cellulose contained in the heat insulating coating composition, And it was confirmed that it exhibited the effect of heat insulation, fire resistance and electrification by heating as in Experimental Example 2, Experimental Example 3 and Experimental Example 5.

As a result, the composition according to the present invention provides excellent insulation effect when used for insulation of general buildings and various facilities, and thus it can be confirmed that the cooling cost or the power consumption can be drastically reduced. In addition, it is confirmed that the stability can be secured by preventing the burns of workers due to low thermal conductivity when applied to high temperature steam lines and preventing expansion due to external heat in city gas pipelines and the like.

From the above description, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. In this regard, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the scope of the present invention as defined by the appended claims.

Claims (12)

As an adiabatic coating composition,
A mixture of 5 to 40% by weight of soda lime borosilicate glass (SBG), 20 to 70% by weight of an acrylic binder, 1 to 20% by weight of an oxide ceramic, 0.1 to 4.0% by weight of a silane coupling agent, 0.1 to 4.0% by weight of cellulose,
The soda lime borosilicate glass comprises 5-15% by weight of silica, 5-15% by weight of calcium oxide, 5-10% by weight of sodium oxide and 2 to 6% by weight of boron,
Wherein the sodalime borosilicate glass has a density of 0.1 to 0.3 mg / ml and a particle diameter of 80 m or less.
delete The method of claim 1, wherein the soda lime borosilicate glass is 10 to 20 wt%, the acrylic binder is 40 to 50 wt%, the oxide ceramics are 5 to 10 wt%, the silane coupling agent is 0.5 to 2.0 wt% And 0.5 to 2.0% by weight of the ethylhydroxyethylcellulose.
delete delete 3. A method according to claim 1 or 3, wherein the oxide-based ceramic is SiO _2, Al ₂ O _3, Fe ₂ O _3, CaO, MgO, Na ₂ O, K ₂ O, TiO _2, ZnO, ZrO _2, P ₂ O _5, and mixtures thereof.
The heat insulating coating composition according to any one of claims 1 to 3, wherein the acrylic binder is a styrene-acrylic copolymer including a styrene-based monomer and an acrylate-based monomer.
8. The thermal insulation coating composition according to claim 7, wherein the acrylate-based monomer comprises at least one monomer selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate and butyl acrylate.
The heat insulating coating composition according to claim 1 or 3, wherein the silane coupling agent is represented by the following formula (1)
[Chemical Formula 1]

Here, R ¹ , R ² , and R ³ are the same or different and each is an alkyl group having 1 to 5 carbon atoms,
R ⁴ is a linear or branched alkyl group having 1 to 18 carbon atoms.
4. The thermal insulation coating composition according to claim 1 or 3, wherein the heat insulating coating composition further comprises at least one selected from the group consisting of a neutralizing agent, a freezing stabilizer, a surfactant, an antiseptic, a dispersant, a defoaming agent, and a thickener.
The composition of claim 10, wherein the neutralizer is 0.1 to 0.5 wt.%, The freeze stabilizer is 0.5 to 1.0 wt.%, The surfactant is 0.1 to 0.5 wt.%, The preservative is 0.1 to 0.5 wt. 0.5 to 1.0% by weight of the antifoaming agent, or 0.1 to 0.5% by weight of the thickener.
11. The composition of claim 10, wherein the surfactant is selected from the group consisting of polyoxyethylene alkylamine, polyoxyethylene diamine, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl phenyl Aryl ethers, and mixtures thereof. ≪ RTI ID = 0.0 > 18. < / RTI >