KR100842032B1 - Silant including urushiol and the production method thereof - Google Patents

Abstract

A method for preparing a sealant containing lacquer is provided to obtain a silicone sealant or acrylic sealant useful for various industrial fields including building industries, and to realize health-aid, antibacterial, electron wave-shielding and eco-friendly effects while inhibiting allergic conditions caused by lacquer poison. A method for preparing a sealant containing lacquer comprises the steps of: reacting urushiol with isocyanate to form a solid mixture; crushing the solid mixture to obtain urushiol-containing lacquer powder; and mixing the lacquer powder with a silicone sealant, followed by hardening. In a variant, an acrylic sealant is used instead of the silicone sealant. The sealant is mixed with the lacquer powder in a weight ratio of 1:0.01-0.3.

Description

Sealant containing lacquer and its manufacturing method {Silant including Urushiol and the production method

Figure 1 shows a process diagram for a method for producing a lacquer powder according to the present invention.

Figure 2 shows a process diagram for the manufacturing step of the sealant containing lacquer according to the present invention.

Figure 3 shows a process diagram for a method for producing a solid mixture containing urushiol according to the present invention.

The present invention relates to a sealant containing lacquer and a method for manufacturing the same, and more particularly, to a urethaneol-containing lacquer powder or lacquer prepared by pulverizing a solid mixture produced after a mixing reaction of urushiol and isocyanate (ISOCYANATE). The present invention relates to a lacquer-containing sealant and a method of manufacturing the same, wherein the sealant is cured after mixing with a sealant or an acrylic sealant.

Rhus verniciflua or Rhus vernicifera is a deciduous tree belonging to the family Anacardiaceae, originating from the Central Asian Highlands and Himalayas, and is widely distributed in subtropical and temperate regions around the world. It is cultivated mainly for the sake solution in Southeast Asia such as Korea, Japan and China.

Raw lacquer or lacquer extract from lacquer trees has been known to be effective in eliminating bleeding, promoting blood circulation, and making insects, abdominal pain, excess stomach acid, cough, pulmonary tuberculosis, tuberculosis, constipation, diabetes mellitus, malaria, etc. The anti-cancer effect has been reported. Especially in Korea, lacquer is used for lacquer chicken, lacquer duck, etc. for body care or medicine. In addition, lacquer liquid has a durable property and has been used in large quantities as a natural paint to make everyday products such as cabinets, bowls, cutlery, and tableware by applying it to wood paper, and has excellent flame resistance, heat resistance, antiseptic property, insect repellency and insulation. It is a well-known fact that the preservation property is excellent, especially.

Lacquer solution consists of urushiol, moisture, rubber, laccase, and nitrogen-containing material, of which urushiol is the main component of about 70% of lacquer solution, and is 3-substituted catechol having C15-alkyl or alkenyl group. It is a complex of, and its main component is 3- (8 ′ Z, 11 ′ E, 13 ′ Z-pentadecatrienyl catechol) with 3 double bonds. To date, 13 components of 3-substituted alkylcatechols having 0, 1, 2 or 3 double bonds in the C15 side chain have been identified (Yumin Du and Ryuichi Oshima, J. of Chromatography, 284, 463-473 (1984)). Urushiol is a mixture of polymers in which the monomers are naturally polymerized by these monomers and laccases (Yamauchi, Y., T. Murakami and J. Kumanotani, J. of Chromatography, 214, 343). -348 (19 + 81); Yamauchi, Y., R Oshima and J. Kumanotani, J. of Chromatography, 243, 71-84 (1982; and Y. Du, R. Oshima and H. Iwatsuki, J. of Chromatography , 295, 179-186 (1984).

Attempts to purify urushiol contained in such lacquer include Korean Patent Registration No. 536953 (coated plate using lacquer extract), Korean Patent Registration No. 653277 (coated plate using lacquer extract and lacquer mixture), Korean patent registration No. 653279 (synthetic resin coating method using a lacquer), etc., various efforts have been made to purify and use urushiol in connection with an anticancer composition containing urushiol.

It can be seen that the liquid lacquer liquid was used in various ways as described above, but the lacquer having such excellent effect is not only highly prone to allergy, but also the production process using the lacquer is usually applied after the lacquer liquid is dried and then dried. Product manufacturing process, such as coating the material is cumbersome, and since the urushiol is in a liquid state, the range that can be used with other materials is limited, and there is a problem that the storage and movement of the liquid are inconvenient. Is under development.

The present invention has been made in order to solve the problems of the prior art, in order to lower the likelihood of allergies of the lacquer and to effectively use it is mixed with a pure isocyanate (ISOCYANATE) in pure urushiol extracted from the lacquer and then pulverized lacquer powder or It is an object to manufacture a silicone sealant or acrylic sealant containing a lacquer liquid and to conveniently use or apply to various industrial fields and construction fields.

It is another object of the present invention to provide a sealant containing the lacquer by applying it to various industrial and architectural fields to provide far-infrared radiation effect, electromagnetic wave blocking effect, antimicrobial effect, and eco-friendly and healthful lacquer effect of lacquer. .

The constitution according to the present invention for achieving the above technical problem is characterized in that the cured after mixing with lacquer and sealant.

After the solid mixture produced after the mixing reaction of urushiol and isocyanate (ISOCYANATE) is pulverized to prepare a urushiol-containing lacquer powder, the lacquer is mixed with a silicone sealant and cured.

According to another aspect of the present invention, after the reaction mixture of urushiol and isocyanate (ISOCYANATE) is pulverized to produce a urethane-containing lacquer powder by mixing, characterized in that after mixing the lacquer powder with acrylic sealant and cured do.

According to another aspect of the present invention, the sealant and the lacquer powder are combined in a weight ratio of 1: 0.01 to 0.3.

Another configuration of the present invention is characterized in that the lacquer is classified into a mesh of 200 mesh or more.

Another configuration of the present invention is characterized in that the mixture of the sealant and the lacquer powder is cured at room temperature.

Another configuration of the present invention is characterized in that the sealant containing the lacquer powder prepared by the method as described above.

The manufacturing process of the lacquer powder contained in the silicone sealant or acrylic sealant by this invention is demonstrated as follows.

Solidifying the urushiol extracted from the lacquer to prepare a lacquer powder is a step of curing by mixing the urushiol and isocyanate (ISOCYANATE); After mixing the urushiol and isocyanate (ISOCYANATE), the prepared solid mixture is pulverized in a pulverizer consists of a step of producing a powder, that is, lacquer powder of the solid mixture containing urushiol.

At this time, the isocyanate (ISOCYANATE) to be mixed with the urushiol may selectively use any one of TDI TRIMER, MDI.

When using an isocyanate (ISOCYANATE) mixed with the urushiol as a TDI trimmer, before the mixing step of the liquid urushiol and the solid TDI trimmer, the TDI trimmer in a solid state at room temperature with a thinner and a weight ratio of 1: 1 After mixing in a molten state and mixed with urushiol, the urushiol and TDI trimmer is mixed in a weight ratio of 1: 0.8 ~ 1.2, the most ideal ratio is 1: 1.

When the isocyanate (ISOCYANATE) mixed with urushiol is used as the MDI, the urushiol and MDI are mixed at a weight ratio of 1: 0.5 to 0.9 in the mixing step of the urushiol and MDI, and the most ideal weight ratio is 1: 0.75.

Urushiol-containing solid mixture prepared in the above step is put into a pulverizer and classified into a mesh of 200mesh or more to prepare a lacquer powder.

The lacquer powder prepared as described above is mixed with a silicone sealant and cured to prepare a silicone sealant or an acrylic sealant containing a lacquer powder.

Silicone sealant or acrylic sealant is used for the purpose of securing watertightness and airtightness to various joints or cracks, and the filling material is generally referred to as sealing material, which has a certain strength and elasticity It is used to improve the durability of the building by fixing it. Accordingly, durability performance capable of maintaining variability under natural outdoor conditions is required, but weather resistance, cold resistance, heat resistance, water resistance, chemical resistance, and the like are required.

Hereinafter, a silicone sealant or an acrylic sealant containing a lacquer powder or a lacquer prepared using a mixture of urushiol and isocyanate (ISOCYANATE) according to the present invention will be described in detail with reference to the accompanying drawings.

1, the step of mixing the lacquer and ethanol (S10), the step of centrifuging the mixture (S20), the step of heating the urushiol layer extracted through centrifugation (S30), urushiol Mixing step of isocyanate (S40), generating a solid mixture containing urushiol (S50); Grinding the solid mixture containing urushiol (S60); Classification step of the pulverized solid mixture (S70); Lacquer powder is prepared by the step (S80) of producing a lacquer powder containing urushiol.

Figure 2 illustrates the step of mixing the lacquer powder or lacquer prepared in Figure 1 with a sealant, mixing the lacquer and the sealant (S90); Curing step of the sealant containing lacquer (S100); The production step of the sealant containing lacquer (S110).

Figure 3 illustrates in detail the mixing step (S40) of the urushiol and isocyanate of Figure 1. Isocyanate (ISOCYANATE) to be mixed with the urushiol prior to mixing the urushiol and isocyanate (S40) may be selectively used any one of TDI TRIMER, MDI.

When using an isocyanate (ISOCYANATE) mixed with the urushiol as a TDI trimmer, before the mixing step of the liquid urushiol and the solid TDI trimmer, the TDI trimmer in a solid state at room temperature with a thinner and a weight ratio of 1: 1 After mixing (S40a) to make a molten state and mixed with urushiol (S40b), and curing the molten TDI trimmer and urushiol mixture (S40c). The urushiol and TDI trimmer is mixed in a weight ratio of 1: 0.8 to 1.2, and the most ideal ratio is 1: 1.

When using an isocyanate (ISOCYANATE) mixed with urushiol as MDI, the urushiol and MDI are mixed and cured (S40e) in a weight ratio of 1: 0.5 to 0.9 in the mixing step (S40d) of the urushiol and MDI. The most ideal weight ratio of urushiol and MDI is 1: 0.75.

Urushiol-containing solid mixture prepared in the above step is put into a pulverizer and classified into a mesh of 200mesh or more to prepare a lacquer powder.

The raw lacquer or lacquer liquid used in the present invention may be either Korean, Chinese or Japanese, and the lacquer is centrifuged by mixing with the ethanol. The reason why the lacquer and ethanol are mixed is to reduce the viscosity and dissolve urushiol with ethanol to facilitate separation of rubber and nitrogen compounds from urushiol because the lacquer itself is too high in viscosity to prevent centrifugation. At this time, natural raw lacquer can be used, but since the function of the lacquer is reduced by impurities such as rubbery and nitrogen compounds, centrifuged lacquer is used.

 In addition, organic solvents such as acetone or xylene may be used instead of ethanol, but ethanol is environmentally and economically advantageous due to lower environmental harmfulness and lower boiling point than other organic solvents. At this time, if the mixing ratio of the lacquer and ethanol is less than 1: 0.8, there is a problem in that the ethanol does not sufficiently dissolve urushiol and thus the centrifugation is not completed.If the mixing ratio of the lacquer and ethanol exceeds 1: 1.2, the centrifugation is performed. After the evaporation of ethanol and water by distillation under reduced pressure, there is a problem that the time and cost required for evaporation increases, so the mixing ratio of lacquer and ethanol is preferably 1: 0.8 to 1.2. Subsequently, centrifugation at 10,000 rpm or more causes the solids in which rubbery and nitrogen compounds are deposited to sink in the lower layer, and it is possible to separate urushiol dissolved in ethanol in the upper layer. At this time, the urushiol and ethanol separated by centrifugation were heated under reduced pressure or vacuum at 40 ° C. to 100 ° C. to evaporate and remove ethanol and water to obtain only urushiol. When urushiol and isocyanate (ISOCYANATE) obtained here are mixed and stirred, a reaction takes place and turns into a solid. At this time, even if the urushiol and isocyanate (ISOCYANATE) is mixed in the same equivalent and left at room temperature, the reaction occurs, but when heated, a faster reaction occurs.

In addition, the isocyanate to be used may be any having an ISOCYANATE group (-N = C = O) such as TDI, MDI, TDI trimer, and the like. However, TDI (Toluene D-isocyanate) is produced by synthesizing phosgene in TDA, and is used as a raw material of polyurethane to make building insulation materials, chairs, seats, automobile adhesives, rubber adhesives, textile treatments, artificial leather paints, etc. The phosgene gas was used as a chemical weapon during the First and Second World Wars, causing pulmonary edema, lung cancer, and the like to death of 1.2 million people. In addition, during the TDI manufacturing process, phosgene is produced by heating chlorine and carbon monoxide at high temperature, and there is a risk of explosion due to high pressure. In September 1991, there was an accident of leaking TDA and tar in Gunsan.

When using isocyanate (ISOCYANATE) as MDI, MDI is liquid, so it is easy to mix with urushiol, but the weight ratio with urushiol is 1: 0.5 ~ 0.9, and the ideal ratio is 1: 0.75. If the weight ratio of MDI is less than 0.5, the mixture of urushiol and MDI becomes molten to leave urushiol, and if it is greater than 0.9, MDI becomes excessive and the effectiveness of lacquer is reduced.

Here, MDI (methylene diphenyl diisocyanate) is a mixture of dicyclie monomer MDI and PLOYCYCLIE polyisocyanate (polymeric MDI), which is a white to pale yellow solid, aromatic hydrocarbon, chlorinated aromatic hydrocarbon, nitrobenzene, acetone , Soluble in ether, ethyl oxide, dioxane, etc., relatively low corrosiveness at room temperature, and is prepared by reacting aniline with formalin and acid condensation followed by phosgene.

In addition, when using isocyanate (ISOCYANATE) as a TDI trimmer, since the TDI trimmer to be mixed before the mixing step of the urushiol and the isocyanate (ISOCYANATE), that is, the TDI trimmer is solid, the thinner and the weight ratio are easily mixed with the urushiol. After mixing to about 1: 1 in a molten state (S40), the melt and urushiol of the TDI trimmer are mixed (S41).

At this time, the mixing ratio of urushiol and TDI trimer is suitably 1: 0.8 to 1.2 weight ratio, the most ideal weight ratio is 1: 1. If the weight ratio of TDI TRIMER mixed with urushiol is less than 0.8, the mixture after the reaction will be left in a molten state without being sufficiently reacted with urushiol, and if it is larger than 1.2, the TDI TRIMER will be excessive and the efficacy of lacquer Will fall.

Therefore, it is preferable to use TDI trimer in consideration of melting point and stability among those including the isocyanate groups presented above. Reaction weight ratio should consider the equivalent, and URUSHIOL 1: TDI trimmer 0.8 ~ 1.2, MDI is about 0.5 ~ 0.7, and when the isocyanate (ISOCYANATE) is in excess, the effectiveness of lacquer decreases. Urushiol remains and the reaction is not complete.

When the lacquer powder produced in the present invention is mixed with 1 to 30% by weight of the sealant resin and cured, a sealant having a mixed lacquer powder is prepared.

The silicone sealant is used in various exterior panels, joints around window frames, exposed finishes, interiors such as stone, bathrooms, RC walls, joints around window frames, etc., and the lacquer mixed with the sealant can be used for both lacquer and lacquer powder. , The lacquer liquid is more likely to cause skin allergy, it is more preferable to use a lacquer powder less likely to cause skin allergies.

Hereinafter, the configuration of the present invention will be described in detail through the embodiment.

Example 1 Silicone Sealant Containing 1% by Weight Lacquer Powder

25 kg of ethanol was mixed with 25 kg of ethanol and stirred well with a rod. The mixture was poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1 kg of TDI trimmer were mixed and left in a 100 ° C. thermostat for 1 hour. After completion of the reaction, put the solid in the ball mill and grind it for 24 hours, and classify it into 200mesh mesh.Silicone sealant (HENKEL LC909) 100g: 1g of lacquer powder was mixed and applied to an aluminum plate with a thickness of 1 ~ 2mm and left at room temperature for 1 hour. The surface was cured, and after 24 hours, the interior was also cured. The test results of this product are shown in [Table 1] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

Example 2 Silicone Sealant Containing 5% by Weight Lacquer Powder

25 kg of ethanol was mixed with 25 kg of ethanol and stirred well with a rod. The mixture was poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1.5 to 2 kg of TDI trimmer were mixed and left in a 100 ° C. thermostat for 1 hour. After completion of the reaction, put the solid in the ball mill and grind it for 24 hours, and classify it into 200mesh net.Silicone sealant (HENKEL LC909) 100g: Mix 5g lacquer powder, apply it to aluminum plate with thickness of 1 ~ 2mm, and leave it at room temperature for 1 hour. The surface hardened and the interior hardened after 24 hours. The test results of this product are shown in [Table 2] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4X10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

Example 3 30% by weight of silicone sealant containing lacquer powder

25 kg of ethanol is mixed with 25 kg of ethanol and stirred well with a rod. The mixture is poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiruol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1 kg of MDI were mixed and reacted and left at 50 ° C. for 1 hour. After completion of the reaction, put the solid in the ball mill and crush it for 24 hours, and classify it into 200mesh net.Silicone sealant (HENKEL LC909) 100g: Mix 30g lacquer powder, apply 1 ~ 2mm thickness on aluminum plate, and then heat at room temperature for 1 hour 30 minutes. The surface was cured by standing, and the interior was cured after 24 hours. The test results of this product are shown in [Table 3] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4X10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

Example 4 1% by weight of acrylic powder containing acrylic sealant

25 kg of ethanol was mixed with 25 kg of ethanol and stirred well with a rod. The mixture was poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1 kg of TDI trimmer were mixed and left in a 100 ° C. thermostat for 1 hour. After completion of the reaction, put the solid in a ball mill and crush it for 24 hours and classify it into 200mesh net, and then mix 100g of acrylic sealant (HENKEL LC909): 1g of lacquer powder, apply it to aluminum plate with thickness of 1 ~ 2mm, and leave it at room temperature for 1 hour. The surface was cured, and after 24 hours, the interior was also cured. The test results of this product are shown in [Table 4] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4X10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

Example 5 Acrylic Sealant Containing 5% by Weight of Lacquer Powder

25 kg of ethanol was mixed with 25 kg of ethanol and stirred well with a rod. The mixture was poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1.5 to 2 kg of TDI trimmer were mixed and left in a 100 ° C. thermostat for 1 hour. After completion of the reaction, put the solid in the ball mill and grind it for 24 hours, and classify it into 200mesh net. Acrylic sealant (HENKEL LC909) 100g: Mix 5g lacquer powder, apply to aluminum plate 1 ~ 2mm thick, and leave at room temperature for 1 hour. The surface hardened and the interior hardened after 24 hours. The test results of this product are shown in [Table 5] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4X10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

Example 6. 30 wt% of Lacquer Powder Acrylic Sealant

25 kg of ethanol is mixed with 25 kg of ethanol and stirred well with a rod. The mixture is poured into a continuous centrifuge at 4 l / min, and then rotated at 15,000 rpm to obtain 46 kg of urushiruol solution. The obtained urushiol solution was heated at 60 ° C. under reduced pressure to evaporate ethanol and water to prepare 13 kg of urushiol. 1 kg of the prepared urushiol and 1 kg of MDI were mixed and reacted and left at 50 ° C. for 1 hour. After completion of the reaction, put the solid in the ball mill and grind it for 24 hours, and classify it into 200mesh net. Acrylic sealant (HENKEL LC909) 100g: Mix 30g lacquer powder, apply it to aluminum plate with thickness of 1 ~ 2mm, and then at room temperature for 1 hour 30 minutes. The surface was cured by standing, and the interior was cured after 24 hours. The test results of this product are shown in [Table 6] below.

Test Items unit Sample classification Result Test Methods Antibacterial Test (E.coli) A 2.7 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) B 1.3X10 ⁷ CFU / Sample JIS Z 2801: 2000 Antibacterial Test (E.coli) C <10 CFU / sample JIS Z 2801: 2000 Antibacterial Test (E.coli) Antimicrobial activity 6.1 or higher JIS Z 2801: 2000 Antimicrobial Test (S. aureus) A 2.9 X 10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) B 8.4X10 ⁵ CFU / Sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial Test (S. aureus) Antimicrobial activity 4.9 and above JIS Z 2801: 2000

The above-described embodiment is only for the purpose of describing the contents of the invention in detail, and is not intended to limit the scope of the technical idea of the invention, the present invention will be seen by those of ordinary skill in the art. Various substitutions, modifications, and changes are possible without departing from the spirit and scope of the present invention, which is not limited to the above embodiments. .

The silicone sealant or acrylic sealant containing a lacquer powder prepared using a mixture of urushiol and isocyanate (ISOCYANATE) according to the present invention described above may be used in various products and construction fields due to reduced lacquer (allergy) than lacquer liquid. Therefore, it not only gives antimicrobial and far-infrared radiation effect, but also provides far-infrared radiation effect, electromagnetic wave blocking effect, and effects that can be used in environment-friendly and healthful products.

In addition, the lacquer powder is easier to store and transport than the lacquer liquid, and also contains lacquer powder without waiting for the lacquer to dry out or producing a new lacquer mixture. The use of silicone sealants provides the effect of lacquer effect on the product or construction field.

Claims (7)

delete After mixing the urushiol and isocyanate (ISOCYANATE), the solid mixture produced is pulverized to prepare a urushiol-containing lacquer powder, and then the lacquer is mixed with a silicone sealant and cured, Manufacturing method. After mixing the urushiol and isocyanate (ISOCYANATE), the solid mixture produced is pulverized to prepare a urushiol-containing lacquer powder, and then the lacquer is mixed with an acrylic sealant and cured. Manufacturing method. The method of claim 2 or 3, The sealant and the lacquer powder is a method for producing a sealant containing a lacquer, characterized in that to be combined in a weight ratio of 1: 0.01 ~ 0.3. The method of claim 4, wherein The lacquer powder is a method for producing a sealant containing lacquer, characterized in that the classification into 200 mesh or more. The method of claim 4, wherein The mixture of the sealant and the lacquer powder is a method for producing a sealant containing lacquer, characterized in that the curing at room temperature. Sealant containing a lacquer prepared by the method of claim 4.

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