KR101666464B1 - Two component type poly urethane adhesive composition - Google Patents

Abstract

The present invention relates to a composition comprising 10 to 60% by weight of a first component consisting of an isocyanate compound; Ii) from 5 to 30% by weight of a colored pigment; iii) from 5 to 40% by weight of an elastomeric resin; iv) from 0.01 to 10% by weight, % Of a filler, and v) a curing accelerator comprising a first curing accelerator for promoting room temperature curing and a second curing accelerator for accelerating high-temperature curing, and a second component consisting of 5 to 20 wt% Lt; / RTI >

Description

[0001] This liquid type polyurethane adhesive composition {TWO COMPONENT TYPE POLY URETHANE ADHESIVE COMPOSITION}

The present technology relates to a technique of an adhesive field, and more particularly, to a technique of manufacturing an adhesive composition that can be used as an adhesive component during the manufacturing process of an electronic device such as a display device.

In recent years, flat panel displays have demanded excellent characteristics such as thinning, light weight, and low consumption strategy. Of these, liquid crystal display devices have been widely used in notebooks, netbooks, and televisions because of their excellent resolution, color display, and image quality.

In such a liquid crystal display device, a liquid crystal panel formed by laminating two liquid crystal layers between two adjacent substrates is an essential component, and the direction of arrangement of liquid crystal molecules is changed by an electric field in the liquid crystal panel to realize a difference in transmittance. However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required to display the difference in transmittance as an image. To this end, a backlight unit having a light source is disposed on the back surface of the liquid crystal panel.

Conventionally, a process of assembling a liquid crystal panel and a backlight unit using a top cover was used. However, there is a problem in that the liquid crystal display device which is recently required is thinned and lightened, and there is also a problem that the unnecessary processing cost by the top cover increases greatly. Accordingly, a liquid crystal display device or the like having a top cover removed has been manufactured recently. In such a liquid crystal display device, a side cover having a panel side supporting means is provided for lateral support of the liquid crystal panel. However, in this case, banding of the liquid crystal panel is required in assembling the liquid crystal panel, and in this case, there is a problem that the liquid crystal panel is broken due to the bending stress of the liquid crystal panel, or the vertex portion is broken.

In order to solve such a problem, a method of bonding the edge of the backlight unit or the edge of the liquid crystal panel using an adhesive tape has been introduced. However, when the adhesive tape is used, the release paper of the adhesive tape is integrally attached to the front surface of the adhesive tape. At this time, the releasing paper is formed on the entire surface of the bonding portion, so that the air between the optical sheets can not escape. Therefore, when the panel is put in the vacuum chamber for attaching the panel, a failure of the backlight unit to pop up occurs. In addition, when the release paper is detached, some of the adhesive tape may fall off together with the release paper. Particularly, when the releasing paper is attached to the adhesive tape, the adhesive portion of the adhesive tape adheres to the adhesive tape. Also, light leakage from the backlight unit to the outside through the space in which the adhesive tape is adhered is generated, thereby lowering the efficiency of the liquid crystal panel.

In order to solve such a problem, the liquid crystal panel and the backlight unit are firmly adhered in the case of the adhesive for a liquid crystal display device, thereby making it possible to manufacture a lightweight and thinned liquid crystal display device. In addition, since the colored pigment is dispersed in the adhesive composition, light emitted from the backlight unit is prevented from escaping to the outside of the LCD module, thereby increasing the light efficiency of the liquid crystal panel. On the other hand, when an adhesive is used, it is difficult to maintain the gap between the liquid crystal panel and the backlight unit, and it is difficult to maintain a constant shape, so that the vertical path of light generated from the backlight unit may be damaged. In addition, in the case of an adhesive for a conventional liquid crystal display, a curing time of several tens of minutes or more is required, so that the adhesive application and curing process can not be introduced into a liquid crystal display manufacturing process which must be completed in a short time, There is a problem in that it can not be introduced into an actual process of a liquid crystal display device requiring curing within minutes. Furthermore, conventional adhesives have relatively good adhesion performance between glass-PC (polycarbonate) but poor adhesion performance between glass and SUS (metal).

DISCLOSURE OF THE INVENTION The present invention has been made to overcome the above-mentioned problems, and an object of the present invention is to provide a glass composition which is excellent in adhesion performance between glass and stainless steel (SUS) And to provide an adhesive composition which is shortened in process efficiency.

Another object of the present invention is to provide an electronic device which is formed in one area of an electronic device such as a display device by including a cured film formed by curing the composition, thereby improving the light-shielding effect, durability and stability of the adhesive interface of the device.

The liquid polyurethane adhesive composition according to one embodiment of the present invention comprises a first component consisting of 10 to 60% by weight of an isocyanate compound; Ii) from 5 to 30% by weight of a colored pigment; iii) from 5 to 40% by weight of an elastic resin; iv) from 0.01 to 10% by weight of a polyol; And 5 to 20% by weight of a curing accelerator comprising a first curing accelerator for promoting room temperature curing and a second curing accelerator for accelerating high temperature curing.

The isocyanate may be at least one selected from the group consisting of methylenediphenyl diisocyante (MDI), 1,6-hexamethylene diisocyanate (HDI), p-phenylene diisocyanate (PPDI) Toluene diisocyanate (TDI), 1,5-naphthalene diisocyanate (NDI), isoporon diisocyanate (IPDI), cyclohexylmethane diisocyanate (H12MDI) , Xylene diisocyanate (XDI), Norbornene diisocyanate (NBDI), Trimethyl hexamethylene diisocyanate (TMDI), and the like.

Examples of the polyol include polybutadiene diol, polytetramethylene ether glycol, polypropylene oxide glycol, polypropylene oxide triol, polybutylene oxide glycol, polybutylene oxide trione, and low molecular weight glycols.

Examples of the above-mentioned colored pigments include metal oxides, complex oxides, metal sulfides or metal carbonates, carbon black, titanium black, organic blacks containing any one of iron, copper, manganese, cobalt, chromium, nickel, zinc, And materials of a carbon source such as graphite.

As the elastic resin, a polybutadiene resin, a glycidyl ester resin, an epoxy novolac resin, a bisphenol A type novolak resin or the like can be used.

As the first curing accelerator, a metal salt or a metal-naphthenic acid compound may be used, and as the second curing accelerator, an amine compound may be used. The first curing accelerator and the second curing accelerator may be contained in the second component in a weight ratio of 1:16 to 20, respectively, and the first component and the second component may be contained in the same volume. The first component and the second component may be separately stored in the liquid syringe container and used. The viscosity of the first component is preferably 10,000 to 50,000 cps and the viscosity of the second component is preferably 9,000 to 60,000 cps.

The liquid type polyurethane adhesive composition according to another embodiment of the present invention comprises a room temperature curing accelerator containing a metal salt or a metal-naphthenic acid compound and a high temperature curing accelerator containing an amine compound at a weight ratio of 1:16 to 20 This liquid type polyurethane adhesive has a surface hardening time of 3 minutes or less and a dynamic shear force between glass and metal at least 4.5 kgf / cm ² when cured.

The display device according to an embodiment of the present invention includes the cured film of the liquid polyurethane composition described above.

The liquid polyurethane composition according to the present invention can effectively block the light leakage at the bonding site of various optical electronic devices including the display device and also can be applied to the case where the adhesive application site is not only glass- Adhesive performance.

In addition, the composition exhibits excellent surface hardening time within a few minutes in the curing process, thereby shortening the manufacturing process time of the electronic device.

Furthermore, the elasticity of the gap portion where the adhesive resin film is formed is excellent, and the durability of the adhesive interface and the stability of the element can be improved.

Accordingly, the liquid polyurethane composition according to the present invention is expected to exhibit its usefulness by being used in various industrial fields in various ways.

Hereinafter, the liquid type polyurethane adhesive composition according to the present invention will be described in detail. However, the following description is only an exemplary description of the present invention, and the technical idea of the present invention is not limited by the following description, and the technical idea of the present invention is defined by the claims that follow.

The adhesive composition for a liquid crystal display according to an embodiment of the present invention includes an adhesive resin, a colored pigment, an elastic resin, a spacer, and a curing accelerator, and is applied on at least a part of the lower surface of a liquid crystal module of a liquid crystal display device, And the liquid crystal module and the backlight module are bonded to each other. The liquid crystal module is a concept including a liquid crystal panel. The backlight module is a concept including not only a backlight but also various sheets or films. The liquid crystal module and the backlight module can be manufactured in a state before the final two- .

The liquid polyurethane refers to a polyurethane formed by mixing an isocyanate compound and a polyol compound. One-component polyurethane having a urethane group in a single composition can be simply applied and adhered, but is unstable and has a difficult storage condition and has a lower adhesive force than the liquid polyurethane. In addition, it is difficult to mix colored pigments to prevent light leakage which is a main characteristic of the liquid type polyurethane adhesive composition according to an embodiment of the present invention. This liquid type polyurethane can be mixed with a color pigment having a high adhesive power and a light shielding effect capable of blocking the light-shielding effect, although it is troublesome to use an isocyanate compound and a polyol compound in a mixed state. .

Examples of the isocyanate compound include methylenediphenyl diisocyante (MDI), 1,6-hexamethylene diisocyanate (HDI), p-phenylene diisocyanate (PPDI), isophorone diisocyanate Toluene diisocyanate (TDI), 1,5-naphthalene diisocyanate (NDI), isoporon diisocyanate (IPDI), cyclohexylmethane diisocyanate (H12MDI) , Xylene diisocyanate (XDI), Norbornene diisocyanate (NBDI), Trimethyl hexamethylene diisocyanate (TMDI), and the like can be used. The isocyanate compound may be used alone or in combination of two or more.

The liquid polyurethane adhesive composition according to the present embodiment includes a first component and a second component as described below, and the first component and the second component are mixed before being applied to the process, that is, ≪ / RTI >

Therefore, the isocyanate compound reacts with a polyol compound to be described later to form a polyurethane resin, which is once stored as a separate component before being applied to the process. On the other hand, the isocyanate compound has a content of 10 to 60% by weight in the whole adhesive composition.

The second component separated from the first component is a mixture of a polyol compound, a colored pigment, an elastic resin, a filler, and a curing accelerator.

As the polyol compound, a polyether polyol and a low molecular weight glycol may be used. Examples of the polyether polyol include polybutadiene diol, polytetramethylene ether glycol, polypropylene oxide glycol, polypropylene oxide triol, polybutylene oxide glycol, polybutylene oxide trione, and the like. Examples of the low molecular weight glycols include 1,4-butanediol, 1,3-butanediol, 1,6-hexanediol, ethylene propylene glycol, diethylene glycol, dipropylene glycol and neopentyl glycol. The above-mentioned polyol compounds may be contained in the composition alone or alternatively in a mixture of two or more. Examples of commercially available polyol compounds include PPG200D (manufactured by Kumho Petrochemical), PPG400D (manufactured by Kumho Petrochemical), PPG1000D (manufactured by Kumho Petrochemical), PPG2000D (manufactured by Kumho Petrochemical), PPG3000D ), PPG3322 (manufactured by Kumho Petrochemical), and PPG5815 (manufactured by Kumho Petrochemical). The polyol compound has an amount of 10 to 40% by weight in the whole composition.

The isocyanate compound as the first component and the polyol compound as a component of the second component are kept separated from each other during the storage process and are mixed while being applied to the adhesive portion in the bonding process,

The colored pigments used in the liquid type polyurethane adhesive composition according to one embodiment of the present invention include metal oxides containing any one of iron, copper, manganese, cobalt, chromium, nickel, zinc, An oxide, a metal sulfide or a metal carbonate, or a pigment component such as carbon black, titanium black, organic black or graphite. If necessary, the colored pigment may be used by mixing plural kinds of paper.

The above-mentioned colored pigment preferably has an average particle diameter of 13 to 70 nm. When the size of the particles is too small, it is difficult to disperse in the bonding resin, so that the light-shielding effect is deteriorated. On the other hand, if the particle size is too large, the adhesive strength is lowered. In order to sufficiently disperse the colored pigment in the composition, two or more colored pigments having different particle sizes may be used. As the colored pigment, it is preferable to use carbon black in terms of processability and cost. The colored pigment has a content of 5 to 30% by weight in the whole adhesive composition. When the content of the colored pigment is less than 5% by weight, effective light shielding can not be prevented. On the other hand, when the content of the colored pigment exceeds 30% by weight, the adhesive force can be reduced, and light is absorbed into the adhesive, There is a problem that the utilization efficiency is reduced.

The elastic resin improves the adhesion of the composition and improves the elongation. For example, when manufacturing a liquid crystal display device, when a physical distortion occurs during the process, defects may occur in which the liquid crystal module and the backlight module are separated from each other. When the elongation increases, it plays a role in reducing the incidence of such failure. It also maintains adhesive strength under severe and thermal shock conditions.

The content of the elastic resin in the composition is 5 to 40% by weight. When the content is less than 5% by weight, adhesion performance and durability of the device corresponding to the adhesion site may be lowered. On the other hand, when the content of the elastic resin exceeds 40% by weight, the adhesive force is deteriorated.

As the elastic resin, a polybutadiene resin, a glycidyl ester resin, an epoxy novolac resin, a bisphenol A type novolak resin or the like can be used. The elastic resin preferably has a viscosity of 25,000 to 30,000 cPs at 45 DEG C and a molecular weight of 5,500 to 6,000 g / mol. Examples of commercially available products as the epoxy resin include PB3600 (manufactured by DALCEL chemical), PB4700 (manufactured by DALCEL chemical), and VTBN (manufactured by CVC Thermoset Specialties).

The filler may be selected from the group consisting of barite, kaolin, aluminum oxide, aluminum hydroxide, silica, titanium oxide, aluminum silicate, magnesium hydroxide, magnesium silicate, barium sulfate, magnesium carbonate, clay, talc, In addition, two or more kinds may be mixed and contained in the composition.

As the commercially available filler, Aerosil R8200 (manufactured by EVONIK), Aerosil R300 (manufactured by EVONIK) or Aerosil R200 (manufactured by EVONIK) can be used. The filler preferably has a particle size of several to several hundred nanometers. On the other hand, fumed silica can be used as the silica, and the silica has a particle size of 1 to 500 nm. The filler has an amount of 0.01 to 10% by weight in the whole adhesive composition, and the content can be very flexibly adjusted in consideration of the type of electronic device to which the adhesive composition is applied and the working environment.

The liquid type polyurethane adhesive composition according to one embodiment of the present invention is a curing accelerator which simultaneously contains a room temperature curing accelerator which mainly exhibits promoting performance at room temperature and a high temperature curing accelerator which mainly exhibits promoting performance at a high temperature.

The total content of the curing accelerator is 5 to 20% by weight. If the content of the curing accelerator is less than 5% by weight, the curing rate is lowered. On the other hand, if the content exceeds 20% by weight, the viscosity may be lowered.

As the room temperature curing accelerator, metal salt compounds and metal-naphthenic acid compounds may be used. Examples of the metal salt compound include potassium oleate, tetra-2-ethyl-hexyl titanate, tin (IV) chloride, iron (III) Chloride (Iron (III) Chloride), dibutyltin dilaurate (DBTL) and the like. Examples of the metal-naphthenic acid compound include Zn-naphthenate, Pb-naphthenate, Co-naphthenate, Ca-naphthenate, .

As the high-temperature hardening accelerator, an amine-based compound can be used. Examples of specific amine-based compounds include triethylamine (TEA), N, N-diethylcyclohexylamine, 2,6-dimethylmorpholine, triethylenediamine (DABCO, triethylene diamine), dimethylamino ethyl adipate, diethylethanolamine, N, N-dimethyl benzyl amine, DBU (1,8-Diazabicyclo [5.4.0] undec-7-ene) and DBN (1,5-Diazabicyclo [4.3.0] non-5-ene).

The room temperature curing accelerator and the high temperature curing accelerator are advantageously used in a weight ratio of 1:16 to 20, respectively. If the ratio of the high-temperature curing accelerator to the room-temperature curing accelerator is less than 5% by weight, the curing rate tends to be low. On the other hand, if it exceeds 20% by weight, the viscosity tends to be low.

On the other hand, it was confirmed that the viscosity of the first component was adjusted to 10,000 to 50,000 cps and the viscosity of the second component was adjusted to 9,000 to 60,000 cps in terms of workability and adhesive properties.

A method for manufacturing an adhesive composition for a liquid crystal display according to another embodiment of the present invention includes the steps of preparing a first component composed of an isocyanate compound, a second component comprising a polyol compound, a colored pigment, an elastic resin, a filler, And injecting the first component and the second component into the liquid syringe vessel.

The liquid syringe container is a kind of cartridge, and the first component and the second component are each stored in a liquid type syringe so as to be separated from each other. The liquid syringe includes a discharge port including a mixer at an end thereof. The adhesive composition containing the first component and the second component stored in the liquid syringe may be used after being mixed in a mixer formed at a discharge port at the end of the liquid type syringe vessel and then discharged. On the other hand, the first component and the second component are preferably stored in the syringe container at the same volume ratio.

The liquid polyurethane adhesive composition described above can exhibit a dynamic shear between glass-metal (sus) of at least 4.5 kgf / cm ^{2 with} a surface hardening time of 3 minutes or less at the time of curing.

Hereinafter, the present invention will be described in more detail with reference to specific examples. However, the technical idea of the present invention is not limited by the following embodiments.

[Example]

Example 1

100 g of PTMEG isocyanate (E530D, manufactured by Chemtura) was taken out of the vessel and the mixture A was prepared. 43.35 g of polypropylene glycol (PPG2000D, manufactured by Kumho Petrochemical), 19.70 g of carbon black (TBK 1099R, manufactured by CABOT), 29.56 g of polybutadiene epoxy resin (PB3600, manufactured by DALCEL chemical) 0.49 g of 1,8-diaza-bicyclo [5.4.0] undecene-7 (manufactured by Aldrich) and 5.91 g of fumed silica (aerosil 8200, manufactured by EVONIK) It was prepared in a separate container. The viscosities of mixture A and mixture B measured by RE-215U (Toki Sangyo) were 38,300 cPs and 6,000 cPs, respectively. Mixture A and Mixture B were put into a 50 mL cylindrical syringe vessel at a volume ratio of 50:50, and then extruded.

Example 2

100 g of PTMEG isocyanate (E530D, manufactured by Chemtura) was taken out of the vessel and the mixture A was prepared. , 43.44 g of polypropylene glycol (PPG2000D, manufactured by Kumho Petrochemical), 19.74 g of carbon black (TBK 1099R, manufactured by CABOT), 29.62 g of polybutadiene epoxy resin (PB3600, manufactured by DALCEL chemical) 0.30 g of 1,8-diaza-bicyclo [5.4.0] undecene-7 (manufactured by Aldrich) and 5.91 g of fumed silica (aerosil 8200, manufactured by EVONIK) It was prepared in a separate container. The viscosities of mixture A and mixture B measured by RE-215U (Toki Sangyo) were 38,300 cPs and 5,700 cPs, respectively. Mixture A and Mixture B were put into a 50 mL cylindrical syringe vessel at a volume ratio of 50:50, and then extruded.

Comparative Example 1

100 g of PTMEG isocyanate (E530D, manufactured by Chemtura) was taken out of the vessel and the mixture A was prepared. , 48.29 g of polypropylene glycol (PPG2000D, manufactured by Kumho Petrochemical), 22.22 g of carbon black (TBK 1099R, manufactured by CABOT), 26.67 g of polybutadiene epoxy resin (PB3600, manufactured by DALCEL chemical) (Aldrich) (2.22 g) was prepared in a container separate from the mixture A. The viscosities of mixture A and mixture B measured by RE-215U (Toki Sangyo) were 38,300 cPs and 6,100 cPs, respectively. Mixture A and Mixture B were put into a 50 mL cylindrical syringe vessel at a volume ratio of 50:50, and then extruded.

Comparative Example 2

100 g of PTMEG isocyanate (E530D, manufactured by Chemtura) was taken out of the vessel and the mixture A was prepared. , 17.24 g of carbon black (TBK 1099R, manufactured by CABOT), 25.86 g of polybutadiene epoxy resin (PB3600, manufactured by DALCEL chemical), 0.2 g of dibutyl tin dilaurate (Manufactured by Aldrich) and 5.18 g of fumed silica (aerosil 8200, manufactured by EVONIK) were prepared in a vessel separate from the mixture A. The viscosities of mixture A and mixture B measured by RE-215U (Toki Sangyo) were 38,300 cPs and 9,230 cPs, respectively. Mixture A and Mixture B were put into a 50 mL cylindrical syringe vessel at a volume ratio of 50:50, and then extruded.

[Performance evaluation]

Adhesive performance evaluation

The adhesive compositions prepared in Examples 1 and 2 and Comparative Example 1 were applied to a glass plate to a thickness of 500 탆 and a width of 10 탆. After 12 hours, the elongation was measured with the cured specimen. The results are shown in Table 1.

Evaluation of prevention of light leakage

The adhesive compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were applied to a glass plate to a thickness of 500 mu m. After 12 hours, the absorptivity was measured at 400-600 nm wavelength using UV. The results are shown in Table 1.

Elongation evaluation

The adhesive compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were applied to a glass plate with a thickness of 500 탆 and a width of 10 탆. After 12 hours, the elongation was measured with the cured specimen. The results are shown in Table 1.

Hardness evaluation

The adhesive compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were applied to a glass plate with a thickness of 500 탆 and a width of 4 cm 횞 4 cm. After 12 hours, the hardness was measured with the cured specimen. The results are shown in Table 1.

Evaluation of surface hardening time

The adhesive compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were coated on a glass plate with a thickness of 500 탆 and a width of 10 탆 and then cured by heating at 50 to 150 캜. Respectively.

Evaluation items Example 1 Example 2 Comparative Example 1 Comparative Example 2 Adhesive performance Dynamic Shear
(kgf / cm ² ) PC +
glass 8.298 7.800 9.864 7.511 sus +
glass 10.294 4.993 3.759 2.813 Peel Off (N)
glass + glass 11.336 9.862 11.133 24.404 Light leakage phenomenon
Prevention OD (400-600 nm,
Thickness: 500, Max: 5) 5 5 5 5 Elongation Elongation (thickness: 500,
Width: 10 mm,%) 600 445 678 370 Hardness Sharee 64 85 83.3 83 Surface hardening time min 2.5 1.5 15 5

As a result, the adhesive compositions of Examples 1 and 2 were shortened to 2 to 6 times as much as the compositions of Comparative Examples in the evaluation of the surface hardening time. In the glass-SUS adhesion, And exhibited excellent adhesion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

Claims (13)

A first component consisting of an isocyanate compound having a content of 10 to 60% by weight based on the total composition; And
The first component is not contacted with the first component before use,
And ii) 10 to 40% by weight of a colored pigment, iii) an elasticity comprising a glycidyl ester resin, an epoxy novolac resin or a bisphenol A novolac resin (Dibutyltin dilaurate (DBTL) as a first curing accelerator for accelerating room temperature curing, and a second curing accelerator for accelerating high-temperature curing as a filler and a filler of 0.01 to 10 wt% ≪ / RTI > and v) a curing accelerator comprising 5 to 20%
A liquid type polyurethane adhesive composition.
The method according to claim 1,
The isocyanate may be at least one selected from the group consisting of methylenediphenyl diisocyante (MDI), 1,6-hexamethylene diisocyanate (HDI), p-phenylene diisocyanate (PPDI) Toluene diisocyanate (TDI), 1,5-naphthalene diisocyanate (NDI), isoporon diisocyanate (IPDI), cyclohexylmethane diisocyanate (H12MDI) , At least one compound selected from the group consisting of xylene diisocyanate (XDI), norbornane diisocyanate (NBDI), and trimethyl hexamethylene diisocyanate (TMDI) By weight based on the total weight of the polyurethane adhesive composition.
The method according to claim 1,
The polyol compound,
At least one compound selected from the group consisting of polybutadiene diol, polytetramethylene ether glycol, polypropylene oxide glycol, polypropylene oxide triol, polybutylene oxide glycol, polybutylene oxide trione and low molecular weight glycols ≪ / RTI >
delete delete delete delete The method according to claim 1,
Wherein the first curing accelerator and the second curing accelerator are contained in the second component at a weight ratio of 1:16 to 20, respectively.
The method according to claim 1,
Wherein the first component and the second component are contained in the same volume with each other.
The method according to claim 1,
Wherein the first component and the second component are separated from each other and stored and used in the liquid type syringe container.
The method according to claim 1,
Wherein the viscosity of the first component is 10,000 to 50,000 cps and the viscosity of the second component is 9,000 to 60,000 cps.
delete A display device comprising the cured film of the liquid polyurethane composition of claim 1.