KR101749262B1 - Anti-corrosion coating composition having high-adhesion and fast curing properties, and production method thereof - Google Patents

Abstract

The present invention relates to a composition for anti-corrosive coating having a high adhesive property and a fast curing property, and a method for producing the same, and more particularly to a composition comprising a first component comprising an epoxy resin and an epoxy intermediate modified with a polyamide elastomer; A second component comprising an epoxy resin, a polythiol and a nano-copolymer; And a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate, and a solvent, wherein the composition has a high adhesion and fast curability.
According to the present invention, the curing reaction can be promoted while simultaneously improving the flexibility and adhesion as compared with the existing coating composition, and it can have high adhesion and quick curability, and is very useful as a composition for coating on ships and sewerage There is an effect that can be applied.

Description

[0001] The present invention relates to an anti-corrosive coating composition having high adhesion and rapid curing properties,

The present invention relates to a composition for anti-corrosive coating having a high adhesive property and a fast curing property, and a method for producing the same.

In general, epoxy resins are known to have superior properties such as tensile strength, mechanical strength, adhesiveness, abrasion resistance, impact resistance, acid resistance, and chemical resistance, as compared with other types of resins. As a result, epoxy resins having the above properties are widely used in industrial fields such as ship, civil engineering and construction resin, electric and electronic materials, and the like. However, by using a curing agent such as a polyamine or a polyamide to form a cured coating film by crosslinking rather than using an epoxy resin alone, properties required for various applications of the epoxy resin can be controlled. That is, the coating film formed by using the epoxy resin can be variously controlled not only by the epoxy resin but also by the curing agent used together.

Korean Patent Laid-Open No. 10-2007-0043034 discloses a high solid type epoxy based anticorrosive coating composition comprising, as a main component, a liquid epoxy resin of bisphenol A type epoxy, a modified epoxy resin, an acrylate monomer and the like, an alicyclic amine curing agent, Type hardener and the like as a curing agent component. Korean Patent No. 10-0951645 also discloses an epoxy coating composition comprising an epoxy curing agent comprising a polythiol resin prepared by reacting a polythiol and a carboxylic acid anhydride.

On the other hand, in coating and painting application to vessels, storage tanks, perfluxes (bottom water pipes, etc.), high adhesion properties are required as well as system characteristics. For example, in the case of a ship, it is applied to the bottom, exterior, ballast tanks, etc., and a paint excellent in adhesiveness and weatherability is selected. Generally, the ship painting process is carried out in the order of bottom treatment and primer coating (anticorrosion coating), and finish painting of antifouling paints and others is performed. In the primer coating, a single primer is mainly used for various application sites, and a solvent is added based on a solid epoxy resin. The use of the formulation primer (solid content: 60%, solvent: 40%) on all painted parts of the vessel tended to deteriorate not only environmental problems but also adhesion and abilities. If the content of the solvent is increased, it is also difficult to obtain a thick coating film. The curing time of the coating film is a major factor affecting the working efficiency, and the usual curing time of the coating film is 72 hours.

However, when applying coatings and coatings to vessels, storage tanks, perfusions (bottom water pipes, etc.), the time for such coatings to cure on the substrate should be as short as possible and should be coated and cured at room temperature. That is, the ambient temperature to which the coating agent is applied may vary from 0 ° C or lower to 25 ° C or higher depending on the season and location, and within a temperature range of 0 ° C or lower within 1 day, preferably within 8 hours, , And a method coating agent are required.

Accordingly, the inventors of the present invention developed a composition for a conventional coating that exhibits high adhesiveness and exhibits rapid curability so that the curing time of the coating film can be shortened to 8 hours or less, and completed the present invention.

Accordingly, it is a technical object of the present invention to provide a composition for anti-corrosive coating comprising a epoxy resin, an epoxy intermediate modified with a polyamide elastomer, and a polythiol and a nano-copolymer, and having high adhesion and fast curability.

Another object of the present invention is to provide an additive composition for paints comprising the above-mentioned composition for anti-corrosive coating having a high adhesive property and fast curability.

Another object of the present invention is to provide a method for producing a composition for anti-corrosive coating having the above-mentioned high adhesive property and fast curing property.

It is another object of the present invention to provide a method of applying the composition for anti-corrosive coating having high adhesion and fast curability.

According to a first aspect of the present invention for solving the above problems,

A first component comprising an epoxy intermediate and an epoxy intermediate modified with a polyamide elastomer;

A second component comprising an epoxy resin, a polythiol and a nano-copolymer; And

There is provided a composition for a barrier coating having a high adhesion and fast curability, which comprises a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate and a solvent.

Preferably, the epoxy intermediate is formed by the reaction of an elastomeric monomer represented by the following formula (1) with a rubber-modified epoxy:

≪ Formula 1 >

NH ₂ -CH (R) CH ₂ -O [CH ₂ CH (R)] _x -NH ₂

(Wherein R is H or Me, and x is an integer of 10 to 100).

In the present invention, the polythiol may be at least one selected from the group consisting of pentaerythritol tetramercaptocarboxylic acid ester, trimethylolpropane trimercaptocarboxylic acid ester, and glycol dimercaptocarboxylic acid ester.

Further, in the present invention, the third component may further include additives including dyes, pigments, dispersants, thickeners or surface smoothing agents.

According to a second aspect of the present invention, there is provided an additive composition for paints comprising the composition for anti-corrosive coating having a high adhesive property and a fast curability.

According to a third aspect of the present invention,

(a) preparing a first component comprising an epoxy resin and an epoxy intermediate modified with a polyamide elastomer;

(b) mixing the epoxy resin, the polythiol and the nano-copolymer to prepare a second component;

(c) preparing a third component comprising an amine curing agent, an epoxy reactive diluent, and a solvent; And

and (d) mixing the first component, the second component, and the third component. The present invention also provides a method for producing a composition for a method of coating with high adhesion and fast curability.

Preferably, the step (a)

(a-1) preparing an epoxy resin; And

(a-2) mixing and reacting an elastomer monomer represented by the following formula (1) with a rubber-modified epoxy resin to prepare an epoxy intermediate modified with a polyamide elastomer;

≪ Formula 1 >

NH ₂ -CH (R) CH ₂ -O [CH ₂ CH (R)] _x -NH ₂

(Wherein R is H or Me, and x is an integer of 10 to 100).

According to a fourth aspect of the present invention for solving the above-mentioned problem,

Pretreating the deposited surface; And

Applying a composition for anti-corrosive coating having the high adhesion and fast curability to the adherend surface, and then curing the composition in a temperature range of -10 to 50 ° C. A method of making a composition using the composition is provided.

According to the present invention described above, it is possible to form a rigid epoxy cured structure while improving adhesiveness, flexibility, as well as abrasive performance by including a first component including an epoxy resin and an epoxy intermediate modified with a polyamide elastomer, A polythiol and a nano-copolymer, and has the effect of shortening the curing reaction as well as the adhesiveness and flexibility as well as exhibiting rapid curability and controlling the plasticity. In addition, a third component including an amine curing agent, an epoxy reactive diluent, a polyacrylate, and a solvent is included to accelerate the curing reaction, thereby exhibiting rapid curability. As described above, according to the present invention, it is possible to produce an epoxy composition by properly selecting a nano-copolymer having excellent compatibility with epoxy and an epoxy intermediate modified with a polyamide elastomer excellent in adhesion and flexibility, Adhesion and fast-curing type coating compositions with improved interlaminar adhesion and weatherability of the surface to be coated and finished.

1 shows a shear strength measurement test according to an embodiment of the present invention.

A composition for anti-corrosive coating having a high adhesive property and a fast curing property of the present invention comprises a first component comprising an epoxy resin and an epoxy intermediate modified with a polyamide elastomer; A second component comprising an epoxy resin, a polythiol and a nano-copolymer; And a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate and a solvent.

Hereinafter, each constituent component of the anti-corrosive coating composition of the present invention will be described in detail.

Epoxy resin

As the epoxy resin, any of conventionally known epoxy resins can be used. Examples of the epoxy resin that can be used in the present invention include epoxy resins such as bisphenol epoxy resin, phenol novolak epoxy resin, orthocresol novolak epoxy resin, biphenyl epoxy resin, dicyclopentadiene epoxy resin, diphenylfluorene Epoxy resins, and aromatic rings thereof, such as halogen, amino or alkyl substituents, glycidyl ester type epoxy resins, naphthalene type epoxy resins, heterocyclic epoxy resins, etc. o Aliphatic cyclic epoxy resins, isocyanate modified epoxy resins, Epoxy resins such as epoxy resins, epoxy resins such as epoxy resins, phonoepoxy resins, hydroquinone epoxy resins, hydantoin epoxy resins, resorcinol diglycidyl ether, triglycidyl-p-aminophenol, m-aminophenol triglycidyl ether, tetraglycidylmethylene dianiline, (Trihydroxyphenyl) methane triglycidyl ether, tetraphenyl ethane tetraglycidyl ether Of it may be mentioned epoxy resins (polyepoxy compounds) containing two or more epoxy groups in the molecule.

In the present invention, one or two or more of the above-mentioned epoxy resins (polyepoxy resin compounds) may be used as the epoxy resin.

Among them, in the present invention, a bisphenol-type epoxy resin is preferably used as an epoxy resin in terms of peel adhesion strength and the like. Specific examples of the bisphenol type epoxy resin include bisphenol A type epoxy resins obtained by reaction of bisphenol A and epichlorohydrin, bisphenol F type epoxy resins obtained by reaction of bisphenol F with epichlorohydrin, Bisphenol S type epoxy resins obtained by reaction of chlorohydrin, bisphenol AD type epoxy resins obtained by reaction of bisphenol AD with epichlorohydrin, and halogen or alkyl substituents thereof. In this case, the epoxy equivalent is preferably 130 to 800.

The total content of the epoxy resin contained in the first component and the second component is preferably 20 to 70% by weight based on the total composition. When the content of the epoxy resin is less than 20% by weight, the mechanical properties are deteriorated and it is not preferable. When it exceeds 70% by weight, the adhesiveness and flexibility or the impact resistance performance are deteriorated. At this time, preferably, the epoxy resin may be included in the second component in order to disperse the nano-copolymer. In one embodiment of the present invention, an epoxy resin was prepared by incorporating the first component and the second component in a ratio of 1: 3.

Epoxy intermediates modified with polyamide elastomers

The epoxy intermediate modified with the polyamide elastomer of the first component, including polyether diamine and rubber modified epoxy, increases adhesion and flexibility and improves the performance of the coating composition. In addition, the epoxy intermediate participates in the final curing reaction to form a rigid epoxy cured structure, thereby enhancing the durability as well as the mechanical properties of the coating film.

In this case, the polyether diamine has a weight average molecular weight of 500 to 5,000, and the main chain includes ethylene oxide and propylene oxide chain singly or as a mixture thereof.

The epoxy intermediate may be formed by the reaction of an elastomer monomer (bifunctional diamine monomer) represented by the following formula (1) with a rubber-modified epoxy.

≪ Formula 1 >

NH ₂ -CH (R) CH ₂ -O [CH ₂ CH (R)] _x -NH ₂

(Wherein R is H or Me, and x is an integer of 10 to 100).

At this time, it is preferable that the elastomer monomer represented by Formula 1 has a weight average molecular weight of 500 to 3,000. When the weight average molecular weight of the monomer is less than 500, the molecular weight of the monomer is too low and the flexibility of the molecular chain is insufficient. When the weight average molecular weight is more than 3,000, adhesiveness is lowered.

The elastomer monomer for synthesizing the epoxy intermediate is preferably contained in an amount of 2 to 20% by weight based on the total composition. If the content of the monomer is less than 2% by weight, the effect of addition of the monomer is insufficient, and if it is more than 30% by weight, the adhesion is deteriorated.

The rubber-modified epoxy used for forming the intermediate by reacting with the elastomer monomer may be a commercial product. Among commercial products, CTBN or NBR-modified epoxy intermediates can be selected, and most products have a semi-spherical shape. At this time, the content of the rubber-modified epoxy is preferably 5 to 20% by weight based on the total composition, and if the content is less than 5% by weight, the effect of adding an intermediate is insufficient, and if it exceeds 20% There is a problem of an increase in viscosity and deterioration of adhesiveness is not preferable.

Polythiol

The polythiol in the second component is added to accelerate the epoxy curing reaction. With the addition of the polythiol, the adhesion to the substrate surface can be improved and the curing reaction with the epoxy can be shortened.

Examples of the polythiol include trimethylolpropane trimercaptocarboxylic acid ester, pentaerythritol tetramercaptocarboxylic acid ester, and glycol dimercaptocarboxylic acid ester. These may be used alone or in combination. Specific examples of the polythiol include trimethylolpropane trimercaptopropionate, trimethylolpropane trimercaptanacetate, pentaerythritol tetramercaptopropionate, pentaerythritol tetramercaptan, ethylene glycol dimercaptopropionate, Ethylene glycol dimercaptoacetate, diethylene glycol dimercaptopropionate, bis-menthiol, 2,4,6-trimercapto-1,3,5-triazine, 2-ethylhexyl-3-mercapto Propionate, pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptobutyrate), dipentaerythritol hexakis (3-mercaptopropionate), trimethyl Propane tris (3-mercaptopropionate), and mixtures thereof, but are not limited thereto. Preferably, polythiol monomers having three or more functionalities are suitable, and among them, pentaerythritol tetrakis (3-mercaptopropionate) having the thiol group represented by the following formula (2) can be used.

(2)

At this time, the content of the polythiol is 3 to 30% by weight based on the total composition. If the content is less than 5% by weight, the adhesive property and the effect of increasing the curing rate are insufficient, which is undesirable. If the content is more than 30% by weight, the adhesiveness tends to deteriorate and the flexibility tends to increase excessively.

Nano copolymer

Also, the nano-copolymer of the second component is added in order to improve the flexibility and adhesion, and at the same time, it is easy to control the plasticity so that the plasticity can be controlled with a small amount.

At this time, the nano-copolymer may be a block copolymer having a molecular structure in which two or more kinds of polymers having different properties are covalently linked to form long chains so as to enhance compatibility with the epoxy. The block copolymer used in the present invention may be an ABA or ABA'-type block copolymer, and blocks A to A 'at both ends are commonly used in a matrix, and a central block is a block copolymer in a matrix, The flexibility and adhesiveness can be improved and the plasticity can be controlled. In this case, polymethyl methacrylate (PMMA) and polystyrene (PS) are preferable as the A to A 'components, and poly-n-butyl acrylate (PBA) and polybutadiene (PB) are preferable as the B component.

Examples of commercially available products of the block copolymer include acrylic triblock copolymers produced by living polymerization produced by Alkema. An MAM type represented by polymethylmethacrylate-polybutyl acrylate-polymethyl methacrylate, and a MAM type represented by a carboxylic acid-modified or hydrophilic-group-modified MAM, which are represented by polystyrene-polybutadiene-polymethyl methacrylate, N type or MAM A type. Examples of the SBM type include E41, E40, E21 and E20. MAM types include M51, M52, M53 and M22. MAM N type is 52N and 22N. MAM A type is SM4032XM10 .

The weight average molecular weight of the block copolymer is generally in the range of 20,000 to 400,000, and more preferably in the range of 30,000 to 300,000. If the weight average molecular weight is less than 20,000, desired toughness and flexibility are not obtained, and tackiness is also lowered. On the other hand, if the weight average molecular weight exceeds 400,000, the viscosity of the composition increases and the workability decreases.

In addition, the nano-copolymer is contained in an amount of 2 to 5% by weight based on the total composition. If the content is less than 2% by weight, the effect is insufficient, which is undesirable. If the content is more than 5% by weight, the flowability is seriously deteriorated. In addition, it is preferable that the size of the nano-copolymer is selected from 5 to 15 nanometers, which is excellent in mechanical performance.

Amine curing agent

The curing agent is a component that undergoes a curing reaction with the epoxy resin to convert the epoxy resin into a three-dimensional network structure. In the present invention, an amine curing agent is used in the third component. The amine curing agent may be a typical primary amine or a secondary amine, and may be structurally an aliphatic amine, an alicyclic amine, or an aromatic amine. Specific examples of such amine curing agents include ethylenediamine, diethylenediamine, diethylenetriamine, triethylenetetramine, propylenediamine, tetraethylenepentamine, hexaethyleneheptamine, hexamethylenediamine, 2-methyl- , 5-pentamethylene-diamine, 4,7,10-trioxatridecane-1,13-diamine, aminoethylpiperazine, and the like. At this time, the amine curing agent is preferably a room temperature curing type curing agent. As the room temperature curable amine curing agent, there is a polyfunctional aliphatic amine curing agent, specifically, a linear aliphatic polyamine. At this time, it is preferable that the content of the room temperature curing type amine curing agent is 10 to 40 parts by weight based on 100 parts by weight of the mixed epoxy resin, based on the total weight of the curable coating composition. When the content of the room temperature curing type amine curing agent is less than 10 parts by weight based on 100 parts by weight of the mixed epoxy resin, it is difficult to satisfy the fast curability required in the present invention. When the content is more than 40 parts by weight, Or degradation of physical properties such as hygroscopicity may be a problem.

Epoxy reactive diluent

Diluents are used to lower the viscosity of the coating, improve flow and de-foaming properties during use, and improve fine penetrability in materials with different physical properties. In particular, the diluent does not volatilize unlike ordinary solvents and remains in the cured product at the time of curing. In the present invention, an epoxy reactive diluent is used so as to participate in the reaction with one or more epoxy groups as a third component and enter the crosslinked structure in the cured product. As the epoxy reactive diluent, a monofunctional or bifunctional epoxy monomer may be used. Specific examples thereof include polyethyleneglycol, polypropylene glycol, neopentyl glycol, phenylglycidyl ether, 1,6 hexanediol, trimethylol Propane (trimethyrolpropane) and the like.

Polyacrylate

The polyacrylate in the third component is a compound obtained by polymerization of an acrylate monomer and is added to accelerate the epoxy curing reaction to shorten the curing reaction time and confer fast curability. At this time, the monomer is preferably a trifunctional acrylate monomer such as trimethylolpropane triacrylate, pentaerythritol triacrylate and the like. More preferably, trimethylolpropane triacrylate represented by the following formula can be used.

(3)

The content of the polyacrylate is preferably 2 to 5% by weight based on the total weight of the composition. If the content is less than 2% by weight, the effect is insignificant. If the content is more than 5% by weight, mechanical properties are deteriorated.

solvent

In addition, the solvent in the third component is used for viscosity control and workability of the composition, and the kind of the organic solvent used conventionally is not particularly limited. For example, aromatic hydrocarbon solvents such as toluene, xylene and benzene, ether solvents such as diphenyl ether, methyl cellosolve and butyl cellosolve, and alcohol solvents such as methanol, ethanol and butanol. Can be used. At this time, the content can be appropriately added in consideration of flowability and workability.

In addition, among the third components, other additives may include dyes, pigments, dispersants, thickeners, surface smoothing agents, and the like.

In addition, the anti-corrosive coating composition having high adhesion and fast curability of the present invention as described above can be applied not only as a coating composition but also as an additive for coatings, adhesives and coating agents.

Therefore, according to the present invention, there is provided an additive composition for a paint comprising the above-mentioned composition for anti-corrosive coating having a high adhesion and fast curability.

According to the present invention, there is also provided a composition for anti-corrosive coating having a high adhesion and fast curability, comprising: (a) preparing a first component comprising an epoxy resin and an epoxy intermediate modified with a polyamide elastomer; (b) mixing the epoxy resin, the polythiol and the nano-copolymer to prepare a second component; (c) preparing a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate and a solvent; And (d) mixing the first component, the second component and the third component.

At this time, the step (a) may include: (a-1) preparing an epoxy resin; And (a-2) mixing and reacting an elastomer monomer represented by the following formula (1) with a rubber-modified epoxy resin to prepare an epoxy intermediate modified with a polyamide elastomer.

The composition to be prepared is prepared by preparing each of a first component, a second component and a third component and then mixing them. By mixing the first component, The epoxy hardening structure is formed while improving the performance of the epoxy resin composition. By mixing the second component, adhesiveness, flexibility and shortening of the curing reaction can be shortened to exhibit quick curing property, and the plasticity of the composition can be controlled. As a result, flowability and workability as well as quick curability can be improved.

In addition, the anti-corrosive coating composition of the present invention, which exhibits such excellent adhesion and fast curability, exhibits excellent adhesion to the surface of the structure without applying the primer, so that it can be applied by coating on the surface to be coated.

Therefore, according to the present invention, there is provided a method of manufacturing a semiconductor device, And applying the anti-corrosive coating composition to the adherend surface, followed by curing in a temperature range of -10 to 50 ° C.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples. However, the scope of the present invention is not limited to the following Examples.

<Examples>

First, 80 g of liquid epoxy resin (bisphenol A type), 20 g of Polydis 3619 semi-solid resin and 10 g of elastomer monomer (molecular weight: 5,000) were added to 1 L of SUS container and mixed and reacted at 110 for 3 hours with slow stirring. After the reaction, the contents were slowly cooled to room temperature to prepare the first component.

The materials of the second component and the third component were mixed while stirring at room temperature.

The prepared first, second and third components were mixed while stirring to prepare a coating composition.

<Evaluation>

Shear strength measurement

The shear strength of the prepared composition was measured according to ASTM D 1002. The measurement test conditions are as follows, and the equipment used is shown in Fig.

- Material: SPRC 340 1.6mmt or SPRC 440 1.4mmt

- Dimensions: 100 25.4mm

- Overlap length: 12.5mm

- Surface pretreatment: Acetone ultrasonic cleaning

Curing time measurement

The prepared composition was applied to the surface of several specimens prepared according to ASTM D 1002, and the shear strength of each specimen was measured every hour while the specimens were cured at room temperature (20 ° C). The shear strength values When the value is maintained within 10% error compared with the previous measured shear strength value, the time is set as the curing time.

<Result>

Table 1 shows the content ratio of each component prepared according to the examples, and the results of measuring the shear strength and curing time measured according to the above evaluation method.

As shown in Table 1, in the case of the room temperature curing time, in the case of Comparative Example 1, it took 24 hours at room temperature curing, whereas in Examples 1 and 2, the curing time was shortened to 7 hours and 6 hours, respectively. In Examples 1 and 2, the epoxy curing reaction was accelerated by including polythiol and polyacrylate. That is, it can be confirmed that the coating composition according to the present invention has rapid curability and thus the efficiency of the process can be remarkably increased in the process of forming a coating film.

As a result of measuring the shear strength, the shear strength was measured to be 4Mpa in the case of Comparative Example 1, but it was measured to be 7Mpa in Examples 1 and 2, and it was confirmed that the shear strength was improved by about 175%. This is because, in Examples 1 and 2, the elastomer-modified epoxy intermediate formed by reacting the elastomer-modified epoxy resin with the elastomer monomer and the nano-copolymer were further improved, thereby improving flexibility and adhesion. When the flexibility is improved in most coatings, the adhesiveness is lowered. In the present invention, however, the adhesiveness tends to increase.

As described above, the coating composition according to the present invention promotes the curing reaction at the same time while enhancing the flexibility and the adhesive property as compared with the conventional coating composition, and can have high adhesiveness and fast curability, It can be very usefully applied as a composition.

Claims (8)

A first component comprising an epoxy intermediate and an epoxy intermediate modified with a polyamide elastomer;
A second component comprising a copolymer of epoxy resin, polythiol and SBM (polystyrene-polybutadiene-polymethyl methacrylate) type or MAM (polymethacrylate-polybutyl acrylate-polymethyl methacrylate) type; And
Wherein the composition further comprises a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate and a solvent.
The method according to claim 1,
Wherein the epoxy intermediate is formed by a reaction between an elastomer monomer represented by the following formula (1) and a rubber-modified epoxy:
&Lt; Formula 1 >
NH ₂ -CH (R) CH ₂ -O [CH ₂ CH (R)] _x -NH ₂
(Wherein R is H or Me, and x is an integer of 10 to 100).
The method according to claim 1,
Wherein the polythiol is at least one selected from the group consisting of pentaerythritol tetramercaptocarboxylic acid ester, trimethylolpropane trimercaptocarboxylic acid ester, and glycol dimercaptocarboxylic acid ester. / RTI &gt;
The method according to claim 1,
Wherein the third component further comprises an additive comprising a dye, a pigment, a dispersant, an additive or a surface smoothing agent.
An additive composition for paints comprising the composition according to any one of claims 1 to 4.
(a) preparing a first component comprising an epoxy resin and an epoxy intermediate modified with a polyamide elastomer;
(b) a copolymer of an epoxy resin, polythiol and SBM (polystyrene-polybutadiene-polymethyl methacrylate) type or MAM (polymethacrylate-polybutyl acrylate-polymethyl methacrylate) Preparing two components;
(c) preparing a third component comprising an amine curing agent, an epoxy reactive diluent, a polyacrylate and a solvent; And
(d) mixing the first component, the second component, and the third component. The method of claim 1, wherein the first component, the second component, and the third component are mixed.
The method according to claim 6,
The step (a)
(a-1) preparing an epoxy resin; And
(a-2) mixing and reacting an elastomer monomer represented by the following formula (1) with a rubber-modified epoxy resin to prepare an epoxy intermediate modified with a polyamide elastomer; and Method for preparing coating composition:
&Lt; Formula 1 >
NH ₂ -CH (R) CH ₂ -O [CH ₂ CH (R)] _x -NH ₂
(Wherein R is H or Me, and x is an integer of 10 to 100).
Pretreating the deposited surface; And
Applying the composition of any one of claims 1 to 4 to the adherend surface and then curing the composition in a temperature range of -10 to 50 占 폚 for a high adhesion and fast curing type coating &Lt; / RTI &gt;

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