KR20060130398A - Photo-curable oriental lacquer with high weatherproofness, article using the photo-curable oriental lacquer and preparing method for the article - Google Patents

Abstract

Provided are a photo-curable lacquer composition with good weather resistance, which provides a coating film having good coating properties such as curing speed, weather resistance, surface hardness, and adhesive power, and a preparation thereof. The photo-curable lacquer composition with good weather resistance comprises (a) 55-90wt% of liquid lacquer, (b) 15-40wt% of a mixture of acrylic monomer and oligomer having at least two acryl groups, (c) 1-8wt% of a mixture of a free radical-based short wavelength photoinitiator having an absorption region in 200-350nm and a free radical-based long wavelength photoinitiator having an absorption region in 300-480nm, (d) 0.1-1wt% of a dispersing agent, and (e) 0.5-8wt% of a reactive urethane acrylate derivative represented by the following formula 1 having both a UV-absorbable functional group and a hindered amine group in the molecule. In the formula 1, Acryl is a mono-functional or multi-functional acrylate group, R is a compound derived from trifunctional isocyanate, UVA is a benzophenone group or a triazole group, HALS is 4-amino-2,2,6,6-tetramethyl piperidine or 4-hydroxy-2,2,6,6-tetramethyl piperidine.

Description

Photo-curable oriental lacquer with high weatherproofness, article using the photo-curable oriental lacquer and preparing method for the article}

The present invention relates to a photocurable lacquer composition having excellent weather resistance, a product using the same, and a method for manufacturing the same, and more specifically, by adding a reactive light stabilizer and a photocurable resin mixture to a lacquer composition and composite curing, 1 The present invention relates to a photocurable lacquer composition, a product using the same, and a method of manufacturing the same, which can be used for thickening a film having a thickness of 60 μm or more and have a fast curing speed and excellent coating properties.

Lacquer is a natural coating method using lacquer collected from lacquer trees. It is widely applied to mineral materials such as porcelain and stone bowls as well as furniture, crafts and household goods with elegant luster and strong durability in the room.

However, since lacquer is hardened by the enzymatic oxidation reaction by laccase, the drying speed is very slow. In order to obtain sufficient color, gloss, and excellent surface properties, it is necessary to apply 5 to 10 coatings, resulting in low industrial productivity. There is a problem that the use restrictions follow.

In order to solve the above problems, Korean Patent No. 2001-11478 describes a method of extracting urushiol present in a lacquer solution and thermally curing it according to molecular weight to form a thick film in one coating. 24493 describes a method of forming a coating film by blending with a general synthetic resin, and Korean Patent Nos. 2001-87478 and 2003-78237 describe the curing rate by adding an electrically conductive material and a silicone compound to an ultraviolet curable resin and a lacquer. A method of improving the overall coating properties is described.

However, the above-mentioned methods are more effective in improving the applicability and production speed of lacquer compared with conventional lacquer, but do not contribute to the improvement of weatherability of lacquer. As a result, the scope of application is very limited and it is impossible to apply to outdoor products. There are disadvantages.

Therefore, there is an urgent need for a new lacquer composition and manufacturing method for solving the problems as described above.

An object of the present invention is to add a reactive light stabilizer and a photocurable resin to the lacquer to provide a composite hardening type super weatherable lacquer composition.

Another object of the present invention is to use the compound-curable ultra-durable lacquer composition and compound curing using a constant temperature and humidity chamber, ultraviolet lamp and LED, the curing speed is high, and one-time coating can be thick film of 60㎛ or more, It is to provide a method for producing a lacquer product excellent coating properties.

Another object of the present invention is to provide a product produced according to the above method.

Accordingly, the present inventors have studied hard to obtain a lacquer composition having excellent weather resistance, a fast curing speed, and thickening of the film, and excellent coating properties. As a result, a new lacquer composition comprising a reactive light stabilizer and a photocurable resin added to a lacquer solution And through the composite curing process thereof was able to obtain a manufacturing method to obtain a coating product excellent in weatherability and overall coating properties, the present invention was completed based on this.

Composite hardening type super-weather lacquer composition according to the present invention for achieving the above object is:

(a) 55-90% by weight of lacquer,

(b) 15-40% by weight of a mixture of an oligomer having at least two acrylic groups and an acrylic monomer,

(c) 1-8% by weight of a mixture of free radical type short wavelength photoinitiator having absorption region at 200-350 nm and free radical long wavelength photoinitiator having absorption region at 300-480 nm,

(d) 0.1-1% by weight of dispersant, and

(e) 0.5-8% by weight of the reactive urethane acrylate derivative represented by the following formula (1), wherein the ultraviolet absorbing functional group and the hindered amine group in the molecule are simultaneously introduced:

Wherein Acryl is a monofunctional or polyfunctional acrylate group, R is a compound derived from trifunctional isocyanate, UVA is a benzophenone group or a triazole group, and HALS is 4-amino-2,2,6, 6-tetramethyl piperidine or 4-hydroxy-2,2,6,6-tetramethyl piperidine.

Method for producing a photo-curable lacquer product excellent in weather resistance according to the present invention for achieving the above another object:

The lacquer composition is applied to the surface of a product made of wood, ceramic, porcelain, carbonate resin, methyl methacrylate resin, vinyl chloride resin, polyethylene terephthalate resin or a composite material thereof with a film thickness of 60-150 μm, After curing at room temperature for 24 hours under 70-80% humidity, it was cured for 2 hours using a light emitting diode (LED) for 60-180 seconds, and then cured for 30-60 seconds with a medium or high pressure mercury lamp. It is characterized by obtaining a hardened | cured material.

The photocurable lacquer product excellent in weatherability according to the present invention for achieving the above another object is manufactured according to the above method.

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

As described above, in the present invention, by adding a reactive light stabilizer and a photocurable resin mixture to the lacquer composition, the compound is cured in a complex manner, and has excellent weather resistance. Provided are a photocurable lacquer composition having physical properties, a method for preparing the same, and a product using the same.

The photocurable lacquer composition having excellent weather resistance according to the present invention is 55-90% by weight of lacquer, 15-40% by weight of a mixture of an oligomer having at least two acrylic groups and an acrylic monomer, and a free radical type having an absorption region at 200-350 nm. Reactive urethane acrylate in which 1-8% by weight mixture of short wavelength photoinitiator and free radical type long wavelength photoinitiator having absorption region at 300-480 nm, 0.1-1% by weight dispersant, UV absorbing functional group and hindered amine group are introduced at the same time 0.5-8% by weight of the derivative.

Lacquer liquid used in the present invention is somewhat different in composition depending on the production region, such as Korea, China, Japan, Southeast Asia, etc., in the present invention can be applied regardless of the production area.

The oligomer used in the present invention is a bifunctional or higher polyfunctional resin having at least two acrylic groups, for example, polyester acrylate, urethane acrylate, epoxy acrylate, silicone acrylate and the like. Currently available products include Ebecryl ^? 284, Ebecryl ^? 1290, Ebecryl ^? 80, Ebecryl ^? 830, Ebecryl ^? 9970, CNMER, CN929, CN934, CN963, CN964, CN965, CN980, CN985, CN983, CN971, MIRAMER from Miwon Corporation ^? SC2010, MIRAMER ^? SC2011, MIRAMER ^? SC2020, MIRAMER ^? SC2021, MIRAMER ^? SC2054, MIRAMER ^? SC2532 and the like.

Acrylic monomers used in the present invention include butyl acrylate, isobornyl acrylate, envinyl pyrrolidone, nucleic acid diol diacrylate, nucleic acid diol dimethacrylate, diethylene glycol diacrylate, triethylene glycol Cold Diacrylate, Polyethylene Glycol Diacrylate, Dipropylene Glycol Diacrylate, Tripropylene Glycol Diacrylate, Trimethylol Propane Triacrylate, Pentaethyl Triacrylate, Ethoxylated Trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, pentaethanol tetraacrylate, dipentaerythrol pentaacrylate, ditrimethylolpropane tetraacrylate and the like.

At this time, the total amount of the oligomer and monomer is preferably 15 to 40% by weight, and if the amount is less than 15% by weight, the curing rate is lowered.

The photoinitiator mixture used in the present invention consists of a free radical short wavelength photoinitiator exhibiting light absorption in the range of 200-350 nm and a free radical long wavelength photoinitiator exhibiting light absorption in the range of 300-480 nm.

Examples of the free radical short wavelength photoinitiator include 1-hydroxycyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 2-hydroxy-1- [4- (2- Hydroxyethoxy) phenyl] -2-methyl-1-propanone, methylbenzoylformate, α, α-dimethoxy-α-phenylacetophenone, 2-benzoyl-2- (dimethylamino) -1- [4 -(4-morpholinyl) phenyl] -1-butanone, 2-methyl-1- [4- (methylthio) phenyl] -2- (4-morpholinyl) -1-propanone, etc. . Commercially available products include Irgacure 184, Darocur 1173, Irgacure 2959, Darocur MBF, Irgacure 651, Irgacure 369, and Irgacure 907 from Sivage, Switzerland.

Examples of the free radical long-wavelength photoinitiator include diphenyl (2,4,6-trimethylbenzoyl) -phosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. Commercially available products include Darocur TPO and Irgacure 819 from Sivagei, Switzerland.

In the present invention, the free radical type short wavelength photoinitiator and the free radical type long wavelength photoinitiator are not particularly limited and may be mixed and used in an appropriate composition ratio as necessary. At this time, it is preferable that the amount of the photoinitiator mixture used is 1-8% by weight. If the amount is less than 1% by weight, it is difficult to sufficiently cure the coating film, thereby deteriorating the physical properties. It lowers weather resistance.

As a dispersant used in the present invention, Disperbyk-115, Disperbyk-160, Disperbyk-161, Disperbyk-162, Disperbyk-164, and Disperbyk-182, etc. of BYK-Chemie may be used as commercially available products. Can be. At this time, the amount of the dispersant is preferably 0.1-1% by weight. If the amount is less than 0.1% by weight, it is difficult to obtain a smooth coating surface. When the amount of the dispersant exceeds 1% by weight, the degree of surface hardening is lowered to lower physical properties.

Meanwhile, the reactive urethane acrylate derivatives used in the present invention are disclosed in Korean Patent Application No. 2002-19493. Among the contents of the patent, the contents of the method for producing the reactive urethane acrylate are all included in the present invention. According to the patent, the reactive urethane acrylate derivative is a reactive urethane acrylate in which an intramolecular ultraviolet absorber and a hindered amine group are introduced at the same time.

[Formula 1]

Wherein Acryl is a monofunctional or polyfunctional acrylate group, R is a compound derived from trifunctional isocyanate, UVA is a benzophenone group or a triazole group, and HALS is 4-amino-2,2,6, 6-tetramethyl piperidine or 4-hydroxy-2,2,6,6-tetramethyl piperidine.

At this time, the amount of the reactive urethane acrylate is 0.5-8% by weight, preferably 0.5-5% by weight is good, if the amount of the reactive urethane acrylate is less than 0.5% by weight to give effective light stability. If it exceeds 8% by weight, the cured product properties of the coating film are greatly reduced.

Meanwhile, as the Acryl, a compound represented by the following Chemical Formula 2a, Chemical Formula 2b, Chemical Formula 2c, or Chemical Formula 2d is preferable:

[Formula 2a]

[Formula 2b]

[Formula 2c]

[Formula 2d]

Wherein R ₁ is hydrogen, methyl or OC _n H _{2n + 1} , n is an integer from 1 to 18, and R ₂ is a compound represented by the following Formula 2e, 2f, 2g:

[Formula 2e]

[Formula 2f]

[Formula 2g]

Wherein n is an integer from 1 to 18.

In addition, the UVA is preferably a compound represented by the following general formula (3a) or (3b):

[Formula 3a]

[Formula 3b]

Wherein n is an integer from 1 to 18.

On the other hand, the HALS is preferably a compound represented by the following formula (4a) or (4b):

[Formula 4a]

[Formula 4b]

Wherein R ₁ is hydrogen, methyl or OC _n H _{2n + 1} .

In addition, the R is preferably a compound represented by the following formula (5a) or (5b):

[Formula 5a]

[Formula 5b]

Wherein n is an integer from 1 to 18.

On the other hand, the reactive urethane acrylate represented by the formula (1) is put 0.005-0.1 mol of trifunctional isocyanate in an organic solvent and maintained at a temperature of 25-90 ℃, 0.005 mol-0.1 mol of ultraviolet absorber in the presence of a tin-based catalyst And 0.005-0.1 mol of the hindered amine light stabilizer was added dropwise for 30 minutes to 4 hours, and then reacted for 30 minutes to 5 hours while maintaining the temperature at 40 to 80 ° C, followed by 0.005-0.1 mol of acrylate containing hydroxy group. It is added dropwise and reacted for 1-8 hours. At this time, when the reaction molar ratio for each of the components is outside the above range, a gel is formed or coloring occurs.

On the other hand, the organic solvent is selected from the group consisting of tetrahydrofuran, anhydrous ether, diethyl ether, hexane, toluene and benzene.

In addition, the acrylate-containing acrylate is dipentaryl tritol pentaacrylate, pentaaryl tritol triaryl ether, trimethylol propane diaryl acrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate One selected from the group consisting of hydroxy propyl acrylate, and hydroxy propyl methacrylate.

In the present invention, by adding the reactive urethane acrylate derivative represented by the formula (1) to the photocurable lacquer composition to provide a super weather resistance photocurable lacquer composition excellent in weather resistance, environmentally friendly, fast curing speed and excellent coating properties Can be.

According to the present invention, by using the ultra-weather photocurable lacquer composition of the thermo-hygrostat chamber, LED light source, and UV lamp complex curing to produce a high-productivity lacquer products with excellent weatherability and overall coating properties and fast curing speed .

As the substrate to be used in the present invention, wood, ceramic, porcelain, carbonate resin, methyl methacrylate resin, vinyl chloride resin, polyethylene terephthalate resin or composite materials thereof may be used.

The above-mentioned super-weather photocurable lacquer composition of the present invention is applied to the surface of the substrate to be coated and cured using a constant temperature / humidity chamber, an LED lamp, and an ultraviolet lamp. The coating film is subjected to a humidity of 70-80% for 24 hours. After curing at room temperature, it is preferably cured for 2 hours using a light emitting diode (LED) for 60-180 seconds and then for 20-60 seconds with a medium or high pressure mercury lamp.

At this time, the constant temperature and humidity chamber used in the present invention is preferably temperature control in the 20-80 ℃ range and humidity control in the 50-90% range.

LED lamps used in the present invention preferably has a light amount of 300-900mJ / ㎠ in the wavelength range of 380-450nm, less than 300mJ / ㎠ cured material properties, when exceeding 900mJ / ㎠ increases the shrinkage of the coating film, An increase in elasticity may lower the adhesive strength.

UV lamps used in the present invention preferably has a light quantity of 2-5J / ㎠ in the wavelength range of 200-380nm, the surface hardness is lowered when less than 2J / ㎠, the shrinkage of the coating film exceeds 5J / ㎠ May occur and the adhesion may be lowered.

On the other hand, the thickness of the coating film is suitable 60-150㎛, if the thickness of the coating film is less than 60㎛ the surface properties of the coating after curing is lowered, if it exceeds 150㎛ the complete curing of the coating film is difficult and the adhesive strength may be lowered And surface defects due to shrinkage of the coating.

Hereinafter, the production method and effects of the present invention will be described in detail with reference to the following examples and comparative examples, but the scope of the present invention is not limited to the following examples.

Example 1-3

The photocurable lacquer composition was prepared by stirring and mixing according to a conventional method using the components shown in Table 1 below.

TABLE 1

Photocurable lacquer composition

division Photocurable lacquer composition (g) Lacquer Oligomer Monomer I Monomer II Dispersant Photoinitiator I Photoinitiator II Light stabilizer Control 100 - - - - - - - Example 1 60 20 10 8 0.5 3 One 2 Example 2 60 20 10 8 0.5 3 2 2 Example 3 60 20 10 8 0.5 4 One 2

Japanese lacquer was used as the lacquer, and oligomer was Ebecryl ^? 830 was used. Monomer I and monomer II used hexanediol diacrylate and trimethylolpropane triacrylate from Yubibi Chemical, respectively. Disperbyk-307, manufactured by BYK-Chemie, was used as a dispersant, and Irgacure 184 and Irgacure 819 were used as photoinitiator I and photoinitiator II, respectively. Each of the photocurable lacquer compositions prepared therefrom was coated on a acrylic sheet with a thickness of 60 μm using a bar coater. Curing of the coating film was first cured for 24 hours at room temperature and 75% humidity, and then cured for 80 seconds using an LED lamp, the amount of light was 380mJ / ㎠. The cured coating film thus obtained was cured for 25 seconds using a mercury lamp and the light amount was 4.2 J / cm 2. After hardening by the above method to prepare the test pieces, respectively, the physical properties were measured according to the following measuring method and the results are shown in Table 2 below.

Comparative Example 1

After the photocurable resin composition was prepared in the same manner as in Example 2 except that the light stabilizer was not used to prepare a photocurable resin composition, using the same method to produce a specimen, The physical properties were measured according to the following measuring method, and the results are shown in Table 2 below.

Comparative Example 2

Except that the photoinitiator II of the photocurable lacquer composition is not used to prepare a photocurable resin composition in the same manner as in Example 3, using the same method to produce a specimen, The physical properties were measured according to the following measuring method, and the results are shown in Table 2 below.

Comparative Example 3

After preparing a photocurable resin composition in the same manner as in Example 2, and then using the constant temperature and humidity chamber and UV lamp to produce a specimen in the same manner as in Example without performing the LED curing process, the physical properties according to the following measurement method The results are shown in Table 2 below.

[Measurement Items and Methods]

(1) Weather resistance: In the accelerated weather resistance tester, the aging of the specimen was promoted by using a UV-B lamp which emits an ultraviolet 313 nm wavelength in a cycle of 8 hours at 50 ° C and 4 hours of water condensation at 40 ° C. The mechanical strength and surface appearance were then evaluated (ASTM D 4597).

(2) Surface glossiness: The mirror glossiness of the coating film is measured by measuring the reflectance when the incident angle and the light receiving angle are 60 ° using a gloss meter (Microgloss ^™ , Sheen Instruments Inc.) after curing the coating on the acrylic plate. , By the method of expressing the percentage of the standard gloss of the mirror surface glossiness to 100 (ASTM D 523). The initial values of the specimens and the values after the 500 and 1000 hour accelerated weathering tests were measured, and the average of each test value was measured after 10 measurements.

(3) Pencil hardness: In order to compare the surface hardness of each film coated on the glass plate, the pencil hardness was measured under a constant load (1 kg) using a pencil hardness tester (Wolff-Wilborn Pencil Tester Ref 720N, Sheen Instruments Inc.). The standard pencil (MITSU-BISHI) was changed from 6B to 9H and scratched at 45 ° angle to observe the surface change (ASTM D 3363-74). Each experimental value described the average value after 5 measurements.

(4) Pendulum Hardness: Pendulum Hardness Rockers (Sen Instruments Inc.) was measured to obtain information about the bulk cure and viscoelastic properties of the coating film. Pendulum hardness tests include the Konig and Persoz methods, and the former measures the oscillation time until the angle decreases from an additional 6 ° to 3 ° of 200g. The round trip takes 1.4 seconds. The glass takes 250 seconds and the distance between the balls is 5 cm, allowing small area specimen measurements. The Persoz method, on the other hand, measures the oscillation time from an additional 12 ° of 500g to a 4 ° angle, with one round trip time of 1 second. The glass measurement time is 420 seconds and the distance between the balls is 8 cm, requiring a large area specimen. In this experiment, the coating film coated on the glass plate was measured using the Konig method (ASTM D 4366). Each experimental value described the average value after 5 measurements.

(5) Chemical resistance: The iron hammer wrapped in the cloth was soaked in methyl ethyl ketone (MEK) solution, sufficiently wetted and then taken out, and the number of times the coating film began to be damaged by reciprocating the surface of the coated film on the glass plate at a constant speed and force ( ASTM D 4752). Each experimental value described the average value after 5 measurements.

(6) Adhesive force: The adhesive force of each film coated on the acrylic plate is made by using a cross-hatch cutter (Ref 750, Sheen Instruments Inc.). The number of squares remaining after falling off at high speed was indicated (ASTM D 4541). Each experimental value described the average value after 5 measurements.

TABLE 2

Evaluation of Light Stability and Coating Properties of Photocurable Resins

division Glossiness Pencil hardness Pendulum Hardness Chemical resistance Adhesion Initial value 500 hours 1000 hours Control 68 52 44 B 133 <200 72 Example One 98 97 95 HB 170 > 200 100 2 102 102 100 H 182 > 200 100 3 101 99 99 HB 178 > 200 100 Comparative example One 102 82 71 H 183 > 200 100 2 96 95 95 HB 168 > 200 98 3 100 100 99 HB 172 > 200 90

As shown in Table 2, it can be seen that the addition of the photocurable compound to the lacquer composition improves the curing rate and improves the overall coating properties. In particular, it can be seen that the surface glossiness value is maintained by adding the light stabilizer in the formulation, which indicates that no defects are generated due to aging of the surface. In addition, it can be seen that the adhesion is improved by curing using the LED lamp. As a result of evaluating the physical properties of the coating film prepared by the above-mentioned complex curing process using the super-weather photo-curable lacquer composition of the present invention, in the case of the product using the composition and the manufacturing method according to the present invention, such as curing rate, surface hardness and adhesion The coating properties were also superior to the existing products and curing methods.

As described above, according to the present invention, by adding a photocurable composition containing a reactive light stabilizer to the lacquer solution, using a constant temperature and humidity chamber, LED lamps, UV lamps, combined curing, curing rate, weather resistance and surface hardness and adhesion It is possible to provide a coating film having excellent coating properties such as. According to the present invention, the photocurable ultra weatherable lacquer composition and curing method are expected to be able to enhance the industrial application of the lacquer by improving the production method and product properties of the existing lacquer products.

Claims (8)

(a) 55-90% by weight of lacquer, (b) 15-40% by weight of a mixture of an oligomer having at least two acrylic groups and an acrylic monomer, (c) 1-8% by weight of a mixture of free radical type short wavelength photoinitiator having absorption region at 200-350 nm and free radical long wavelength photoinitiator having absorption region at 300-480 nm, (d) 0.1-1% by weight of dispersant, and (e) 0.5-8% by weight of the reactive urethane acrylate derivative represented by the formula (1) in which a UV absorbing functional group and a hindered amine group are simultaneously introduced into the molecule Photocurable lacquer composition excellent weather resistance comprising a: [Formula 1]

Wherein Acryl is a monofunctional or polyfunctional acrylate group, R is a compound derived from trifunctional isocyanate, UVA is a benzophenone group or a triazole group, and HALS is 4-amino-2,2,6, 6-tetramethyl piperidine or 4-hydroxy-2,2,6,6-tetramethyl piperidine. The photocurable lacquer composition of claim 1, wherein the oligomer is selected from the group consisting of polyester acrylates, urethane acrylates, epoxy acrylates, silicone acrylates, and mixtures thereof. The method of claim 1, wherein the acrylic monomer is butyl acrylate, isobornyl acrylate, envinyl pyrrolidone, nucleic acid diol diacrylate, nucleic acid diol dimethacrylate, diethylene glycol diacrylate, triethylene glycol Lycol diacrylate, polyethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, pentaethanol triacrylate, ethoxylay Group consisting of tide trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, pentaethanol tetraacrylate, dipentaethanol pentaacrylate, ditrimethylolpropane tetraacrylate and mixtures thereof The photocurable lacquer composition, characterized in that selected from. The method of claim 1, wherein the free radical short wavelength photoinitiator is 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2-hydroxy-1- [ 4- (2-hydroxyethoxy) phenyl] -2-methyl-1-propanone, methylbenzoylformate, α, α-dimethoxy-α-phenylacetophenone, 2-benzoyl-2- (dimethylamino) -1- [4- (4-morpholinyl) phenyl] -1-butanone, 2-methyl-1- [4- (methylthio) phenyl] -2- (4-morpholinyl) -1- A photocurable lacquer composition, characterized in that it is selected from the group consisting of propanone and mixtures thereof. The free radical type long-wavelength photoinitiator is diphenyl (2,4,6-trimethylbenzoyl) -phosphine oxide, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, and mixtures thereof. Photocurable lacquer composition, characterized in that selected from the group consisting of. Coating thickness of 60-150 μm on the surface of products made of wood, ceramics, porcelain, carbonate resins, methyl methacrylate resins, vinyl chloride resins, polyethylene terephthalate resins or composites thereof using the composition according to claim 1 After curing at room temperature for 24 hours using a constant temperature and humidity chamber at 70-80% humidity, and then secondary curing using a light emitting diode (LED) for 60-180 seconds, followed by medium or high pressure mercury A method of manufacturing a lacquer coating product, characterized in that it is prepared by curing for 20-60 seconds with a lamp. The method of claim 6, wherein the LED has a light amount of 300-900mJ / ㎠ in the wavelength range of 380-450nm, the ultraviolet light has a light amount of 2-5J / ㎠ in the wavelength range of 200-380nm Method of producing a photocurable lacquer coating product. A photocurable lacquer coating product prepared according to the method of claim 6.