WO2016076662A1 - Ultraviolet curable white ink composition for inkjet printing, method for preparing white bezel pattern using same, and electronic device comprising white bezel pattern prepared by same - Google Patents

Ultraviolet curable white ink composition for inkjet printing, method for preparing white bezel pattern using same, and electronic device comprising white bezel pattern prepared by same Download PDF

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Publication number
WO2016076662A1
WO2016076662A1 PCT/KR2015/012226 KR2015012226W WO2016076662A1 WO 2016076662 A1 WO2016076662 A1 WO 2016076662A1 KR 2015012226 W KR2015012226 W KR 2015012226W WO 2016076662 A1 WO2016076662 A1 WO 2016076662A1
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Prior art keywords
ink composition
white ink
inkjet
curable white
white
Prior art date
Application number
PCT/KR2015/012226
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French (fr)
Korean (ko)
Inventor
유재현
최국현
김준형
김미경
Original Assignee
주식회사 엘지화학
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Publication date
Priority claimed from KR1020150158378A external-priority patent/KR101796359B1/en
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to CN201580057828.3A priority Critical patent/CN107109094B/en
Priority to JP2017515917A priority patent/JP6418471B2/en
Priority to US15/515,847 priority patent/US9963602B2/en
Publication of WO2016076662A1 publication Critical patent/WO2016076662A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the present invention relates to an ultraviolet curable white ink composition for inkjet, a method of manufacturing a white bezel pattern using the same, and an electronic device including a white bezel pattern manufactured according to the present invention.
  • the present invention relates to an ultraviolet curable white ink composition for inkjet, which may exhibit improved adhesion, and to a method of manufacturing a white bezel pattern using the same, and an electronic device including the white bezel pattern manufactured thereby.
  • the bezel In the case of the white bezel (bezel), the bezel should be printed with a thickness of 30 ⁇ m in order to have hiding power due to the characteristic of the pigment.
  • most of the white bezels are white 4 degree printing (7 ⁇ m per 1 degree printing) and black or Gray 1 degree printing (7 micrometers) was ensured the hiding power and the light-shielding characteristic.
  • the process is complicated and takes a long time because the curing process (oven-160 ° C., 10 minutes) is included in every printing.
  • the white bezel has a surface hardness of 5H, adhesion of 5B, hiding rate of 98% or more, color value (L *> 90, a * ⁇ 1, b * ⁇ 1), high temperature (200 ° C) heat resistance, chemical resistance Requires.
  • the UV curable white ink for the touch screen panel bezel should be applied to various substrates as well as tempered glass, and should be excellent in jetting performance with ink jet ink and excellent yellowing after high temperature heat treatment and excellent bezel performance.
  • the cover glass integrated touch panel prints a bezel and deposits electrodes thereon, heat resistance must be ensured at a temperature of 200 ° C. or higher.
  • the present invention can form a bezel with a thickness enough to have a concealment force in one process, the yellowing phenomenon does not occur even at high temperature heat treatment, it can exhibit an improved adhesion force
  • An object of the present invention is to provide a cured white ink composition, a method of manufacturing a white bezel pattern using the same, and an electronic device including the white bezel pattern manufactured accordingly.
  • the present invention is a UV-curable white ink composition for inkjet comprising a pigment dispersion, a binder solution, a monofunctional monomer and a photoinitiator, when forming a pattern for inkjet ink having a thickness of 30 ⁇ m or less and 98% or more It provides an ultraviolet curable white ink composition.
  • the present invention comprises the steps of: a) inkjet printing the UV-curable white ink composition for inkjet of the present invention on a substrate to a thickness of 30 ⁇ m or less to prepare a substrate having a white bezel formed; b) irradiating the substrate with ultraviolet light of 1000 mJ / cm 2 or more to form a cured white bezel pattern; And c) provides a method for producing a white bezel pattern using a UV curable white ink composition for inkjet, comprising the step of heat-treating the substrate.
  • the present invention provides a white bezel pattern manufactured using the manufacturing method.
  • the present invention provides an electronic device including the white bezel pattern.
  • the white bezel pattern having a thickness of 30 ⁇ m or less and a concealment rate of 98% or more may be manufactured by one printing by controlling the pigment content included in the ink composition within the range applicable to the inkjet ink.
  • the white bezel pattern manufactured according to the present invention does not generate yellowing even after high temperature heat treatment (220 ° C., 30 minutes), and may exhibit improved adhesion.
  • the ultraviolet curable white ink composition for inkjet according to the present invention comprises a pigment dispersion, a binder solution, a monofunctional monomer and a photoinitiator, and has a thickness of 30 ⁇ m or less and a hiding rate of 98% or more when forming a pattern.
  • the pigment dispersion in the UV curable white ink composition for inkjet of the present invention may include a white pigment, a first reactive monomer and a dispersant.
  • Titanium dioxide TiO 2
  • zinc oxide or the like may be used as the white pigment, and serves to impart hiding power to the pattern formed of the composition by increasing the reflectance.
  • the ink composition of this invention contains 55 to 70 weight% of the said white pigment with respect to the total weight of a pigment dispersion. If it is less than 55% by weight, the concealment characteristics are insufficient, and if it is more than 70% by weight, dispersion is difficult.
  • a trifunctional acrylate monomer and a bifunctional acrylate monomer may be used.
  • trimethylolpropane triacrylate TMPTA
  • pentaerythritol triacrylate trimethylene propane triacrylate
  • pentaerythol triacrylate trimethylene propyl triacrylate
  • pro Foxylated glycerol triacrylate etc. can be used individually or in mixture.
  • 1,6-hexanediol diacrylate (1,6-hexanediol diacrylate, HDDA)
  • neopentyl glycol diacrylate neopentylglycol diacrylate
  • dipropylene glycol diacrylate dipropylene glycol diacrylate (DPGDA)
  • tripropylene glycol diacrylate Tripropylene Glycol Diacrylate, TPGDA
  • the first reactive monomer is preferably included in 30 to 50% by weight based on the total weight of the pigment dispersion.
  • the dispersant may be a polymeric, nonionic, anionic, or cationic dispersant, and examples thereof include polyalkylene glycols and esters thereof, polyoxyalkylene polyhydric alcohols, ester alkylene oxide adducts, and alcohol alkylenes. Oxide adducts, sulfonic acid esters, sulfonates, carboxylic acid esters, carboxylates, alkylamide alkylene oxide adducts, alkylamines and the like. These may be added alone or used by mixing two or more.
  • the dispersant is preferably included in 2 to 6% by weight based on the total weight of the pigment dispersion.
  • the pigment dispersion is preferably included in 50 to 70% by weight relative to the total weight of the ink composition.
  • the binder solution included in the ultraviolet curable white ink composition for inkjet of the present invention is composed of an epoxy resin and a second reactive monomer.
  • the epoxy resin is included in 20 to 40% by weight based on the total weight of the binder solution.
  • the second reactive monomer serves to dilute the binder.
  • a bifunctional acrylate monomer, a monofunctional monomer, or a mixture thereof can be used.
  • the bifunctional acrylate monomer 1,6-hexanediol diacrylate (1,6-hexanediol diacrylate, HDDA), neopentyl glycol diacrylate (neopentylglycol diacrylate, NPGDA), dipropylene glycol diacrylate (dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (Tripropylene Glycol Diacrylate, TPGDA) and the like can be used alone or in combination.
  • the monofunctional monomer is used alone or in combination of 2-hydroxyethyl acrylate (2-hydroxyethyl acrylate, 2-HEA), isobornyl acrylate (IBOA), phenoxyethyl acrylate (PEA), phenol acrylate and the like It is desirable to.
  • the second reactive monomer is included in 60 to 80% by weight based on the total weight of the binder solution.
  • the binder solution is included in an amount of 1 to 15% by weight based on the total weight of the ink composition. If it is less than 1% by weight, the adhesion and film strength of the substrate and the print layer are not sufficient, and if it is more than 15% by weight, the viscosity is too high and the inkjet process is difficult.
  • the monofunctional monomer included in the ultraviolet curable white ink composition for inkjet of the present invention serves to improve the adhesion between the substrate and the printing layer while lowering the viscosity of the ink.
  • the monofunctional monomer one having a hydroxy functional group may be used, preferably 2-hydroxyethyl acrylate (2-HEA), hydroxypropyl acrylate (HPMA), 2 -One or more monomers selected from the group consisting of hydroxyethyl methacrylate (2-HEMA), hydroxypropyl methacrylate (HPMA) and 4-Hydroxybutyl acrylate (4HBA) can be used.
  • a monomer of 2-hydroxyethyl acrylate (2-HEA) may be used.
  • the monofunctional monomer may be included in 5 to 25% by weight, more preferably 10 to 20% by weight relative to the total weight of the ink composition. If it is less than 5% by weight, the adhesion is insufficient, and if it is more than 25% by weight, the pigment content is low, so that the light blocking property of the film is insufficient.
  • the ink composition of the present invention is used in a solvent-free form containing no solvent, such as butyl carbitol acetate, to promote adhesion, and is a monofunctional monomer having a hydroxy functional group as an adhesion promoter.
  • it may contain an acrylate monomer such as 2-HEA.
  • the photoinitiator serves to initiate a curing reaction in which a monomer having an unsaturated double bond contained in the ink reacts to form a polymer in an ultraviolet curing process.
  • the photoinitiator one containing ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate oxide (Ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate oxide) can be used, specifically Lucirin® TPO (2,4 , 6-Trimethylbenzoyldiphenylphosphine oxide, manufactured by BASF Corporation), Irgacure 2100, Irgacure 819 and the like can be used.
  • Lucirin® TPO when Lucirin® TPO is used as a photoinitiator, yellowing does not occur after high temperature heat treatment (220 ° C, 30 minutes), and curing and solubility are excellent.
  • the photoinitiator is preferably included in 1 to 10% by weight based on the total weight of the ink composition. If the content of the photoinitiator is less than 1% by weight, the curing reaction may not be sufficient, and if it is more than 10% by weight, all of them may not be dissolved.
  • the ink composition of the present invention as a photoinitiator, photoinitiators Irgacure 907, Irgacure 754, Irgacure 2959, Darocure MBF, Irgacure 184, etc., which exhibit yellowing, are not used.
  • the ultraviolet curable white ink composition for ink jet of the present invention may further include any one or more selected from the group consisting of oligomers, polyfunctional monomers, polymerization inhibitors, and surfactants, in addition to the above-described configuration.
  • the multifunctional monomer or oligomer acts as a crosslink through UV curing to increase the film strength of the print layer.
  • the oligomer may be an acrylic oligomer or a polymer thereof, including polyfunctional acrylate (methacrylate), urethane acrylate, polyester acrylate, epoxy acrylate, melamine acrylate and the like.
  • the polyfunctional monomer is preferably a functional group having 4 to 6 or more, for example, a group consisting of pentaerythritol tetraacrylate (PETA), dipentaerythritol pentaacrylate (DPPA), and dipentaerythritol hexaacrylate (DPHA).
  • PETA pentaerythritol tetraacrylate
  • DPPA dipentaerythritol pentaacrylate
  • DPHA dipentaerythritol hexaacrylate
  • the oligomer or polyfunctional monomer is preferably included in 1 to 15% by weight based on the total weight of the ink composition. If it is less than 1% by weight, the film has insufficient strength, and if it is more than 15% by weight, the viscosity of the ink may be so high that the process may be impossible.
  • the ink composition of the present invention may further contain a residual amount of a polymerization inhibitor and a surfactant.
  • the polymerization inhibitor serves to prevent the curing reaction from occurring while the ink is stored at room temperature.
  • the polymerization inhibitors include mono methyl ether hydroquinone (MEHQ), benzoquinone, catechol, phenothiazine, N-nitrosophenylhydroxyamine and 2,2,6,6-tetramethylpiperi.
  • MEHQ mono methyl ether hydroquinone
  • benzoquinone catechol
  • phenothiazine N-nitrosophenylhydroxyamine
  • 2,2,6,6-tetramethylpiperi 2,2,6,6-tetramethylpiperi.
  • One or more selected from dean-1-oxyl free radicals and derivatives thereof can be used.
  • the surfactant controls the surface tension of the ink to facilitate jetting and to properly spread the ink on the glass substrate.
  • the surfactant is a silicone-based surfactant or a fluorine-based surfactant, specifically, the silicone-based surfactant is BYK-Chemie's BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307 , BYK-310, BYK-320, BYK-322, BYK-323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-348, BYK -354, BYK-355, BYK-356, BYK-358, BYK-361, BYK-370, BYK-371, BYK-373, BYK-375, BYK-380, BYK-390, etc.
  • Active agents include F-114, F-177, F-410, F-411, F-450, F-493, F-494, F-443, F-444 and F-445 by DaiNippon Ink & Chemicals (DIC). , F-446, F-470, F-471, F-472SF, F-474, F-475, F-477, F-478, F-479, F-480SF, F-482, F-483, F -484, F-486, F-487, F-172D, MCF-350SF, TF-1025SF, TF-1117SF, TF-1026SF, TF-1128, TF-1127, TF-1129, TF-1126, TF-1130 , TF-1116SF, TF-1131, TF1132, TF1027SF, TF-1441, TF-1442, etc. may be used, but is not limited thereto.
  • the ultraviolet curable white ink composition for inkjet of the present invention does not include a solvent such as butyl carbitol acetate to improve adhesion, but instead of a monofunctional monomer having a hydroxy functional group as an adhesion promoter, for example, 2-HEA. Since it contains an acrylate monomer such as, it can be used in a solvent-free form.
  • the ultraviolet-curable white ink composition for inkjet of the present invention has a composition as described above, the viscosity is 10 to 50 cP at room temperature, the viscosity is 5 to 50 cP at 60 °C, it is excellent in inkjet processability and storage stability, ink
  • a white bezel pattern having a thickness of 30 ⁇ m or less and a hiding rate of 98% or more can be manufactured.
  • the UV-curable white ink composition for inkjet of the present invention has the composition as described above, yellowing does not occur even after high temperature heat treatment (200 ° C., 30 minutes), and can exhibit improved adhesion, which is advantageous for forming bezels. .
  • the present invention comprises the steps of a) inkjet printing the ultraviolet curable white ink composition for inkjet of the present invention on a substrate to a thickness of 30 ⁇ m or less to prepare a substrate having a white bezel formed; b) irradiating the substrate with ultraviolet light of 1000 mJ / cm 2 or more to form a cured white bezel pattern; And c) provides a method for producing a white bezel pattern using a UV curable white ink composition for inkjet, comprising the step of heat-treating the substrate.
  • Step b) may be a step of irradiating ultraviolet light of 1000 mJ / cm 2 or more based on a thickness 30 ⁇ m using a 395nm UV LED lamp.
  • the step c) may be a step of heat-treating the substrate on which the bezel is formed under conditions of 150 to 180 ° C. and 10 to 30 minutes after UV curing.
  • the heat treatment may be performed in an oven or a hot plate.
  • Step c) is a step added after the ultraviolet curing for the purpose of improving the adhesion of the bezel.
  • Step c) may not be necessary depending on the type of substrate (eg film). In one embodiment of the present invention, by performing a heat treatment process after UV curing it was possible to improve the adhesion of the bezel pattern to 5B level.
  • the present invention provides a white bezel pattern manufactured using the manufacturing method.
  • the white bezel pattern may exhibit physical properties such as a concealment rate of 98% or more, a surface hardness of 5H or more, an adhesive force of 5B, a color value (L *> 90, a * ⁇ 1, b * ⁇ 1), and a thickness of 30 ⁇ m or less. .
  • the present invention provides an electronic device comprising the white bezel pattern described above.
  • the electronic device may be a liquid crystal display, a display, a touch panel, and the like, but is not limited thereto.
  • the electronic device may be a touch panel. This is because the touch panel pattern is very simple compared to the black matrix pattern for the liquid crystal display device and can be easily formed through the inkjet printing process.
  • the electronic device according to the present invention may have a configuration known in the art except for including the pattern according to the present invention described above.
  • the ink compositions were mixed in the compositions shown in Tables 1 and 2 below, and the mixture was stirred for 5 hours to prepare ultraviolet curable white ink compositions of Examples 1 to 3 and Comparative Examples 1 to 8.
  • Hybridur®870 Air Products
  • HPNDA Hydroxy Piperidinoic Acid Ester neopentyl Glycol Diacrylate
  • KBM-403 Shin-Etsu Corporation
  • KBM-503 Shin-Etsusa
  • TPO Lucirin® TPO
  • I 2100 Irgacure 2100 (BASF Corporation)
  • I 184 Irgacure 184 (BASF)
  • I 907 Irgacure 907 (BASF Corporation)
  • the ink compositions of Examples 1 to 3 and Comparative Examples 1 to 8 prepared above were inkjet printed on a glass of a square shape having a width of 50 mm, a length of 50 mm, and a thickness of 0.5 mm, with a thickness of 30 ⁇ m, and a 395 nm UV LED lamp.
  • UV curing was performed by irradiating UV light of 1000 mJ / cm 2 or more, and then heat-treated at 150 ° C. for 15 minutes in an oven to prepare a bezel pattern specimen. Thereafter, the specimens were heat-treated in an oven at 220 ° C. for 15 minutes to prepare bezel pattern specimens, and surface hardness measurement experiments and adhesion force measurement experiments were performed. Thereafter, the specimens were heat-treated at 200 ° C. for 30 minutes in an oven, and then subjected to high temperature heat resistance and yellowing. The results are shown in Tables 3 and 4.
  • the surface hardness was measured by a pencil hardness tester, and was measured at a scraping angle of 45 degrees and a load of 500 g (standard: ASTM D3363).
  • the adhesion was measured by a cross cut test to evaluate the adhesion between 0B and 5B (standard: ASTM D3359).
  • Comparative Example 1 was an ink composition containing 50% by weight of white pigment (TiO 2 ) based on the total weight of the dispersion, and when the bezel pattern was formed to a thickness of 30 ⁇ m, the concealment rate was 96%.
  • Comparative Example 3 is an ink composition that does not contain 2-HEA, which is a monofunctional acrylate, and, like Comparative Example 2, has a problem in that the bezel is peeled off during the high temperature heat treatment.
  • Comparative Example 4 contained 2 wt% of 2-HEA, so that the bezel was not peeled off during the high temperature heat treatment, but the adhesion was found to be 0B.
  • Comparative Example 5 the surface composition (2H) and the adhesive force (5B) of the ink composition does not include PD7610, an epoxy resin, was lowered.
  • Comparative Example 6 when KBM-503 was used as an adhesion promoter, the adhesion was found to be 0B.
  • the ink composition containing the acrylate monomer (2-HEA) without the solvents of Examples 1 and 2 showed excellent bezel performance with a surface hardness of 5H and a cross cut test 5B. There was no change in physical properties.
  • Example 3 containing the photoinitiator Irgacure 2100 did not occur yellowing.

Abstract

The present invention relates to an ultraviolet curable white ink composition for inkjet printing comprising a pigment dispersion, a binder solution, a monofunctional monomer and a photoinitiator and, more particularly, to an ultraviolet curable white ink composition for inkjet printing which, at the time of forming a pattern, has a thickness of 30 µm or less and a contrast ratio of 98% or more, a method for preparing a white bezel pattern using the same, and an electronic device comprising the white bezel pattern prepared by the method.

Description

잉크젯용 자외선 경화 백색 잉크 조성물, 이를 이용하는 화이트 베젤 패턴의 제조방법 및 이에 따라 제조한 화이트 베젤 패턴을 포함하는 전자소자UV curable white ink composition for inkjet, a method of manufacturing a white bezel pattern using the same, and an electronic device comprising the white bezel pattern manufactured accordingly
본 출원은 2014년 11월 13일자 한국 특허 출원 제10-2014-0157958호 및 2015년 11월 11일자 한국 특허 출원 제10-2015-0158378호에 기초한 우선권의 이익을 주장하며, 해당 한국 특허 출원의 문헌에 개시된 모든 내용은 본 명세서의 일부로서 포함된다. This application claims the benefit of priority based on Korean Patent Application No. 10-2014-0157958, filed November 13, 2014 and Korean Patent Application No. 10-2015-0158378, filed November 11, 2015. All content disclosed in the literature is included as part of this specification.
본 발명은 잉크젯용 자외선 경화 백색 잉크 조성물, 이를 이용하는 화이트 베젤 패턴의 제조방법 및 이에 따라 제조한 화이트 베젤 패턴을 포함하는 전자소자에 관한 것으로서, 보다 상세하게는 두께 및 은폐율을 높이고, 고온 열처리에도 황변 현상이 발생하지 않고, 향상된 부착력을 나타낼 수 있는 잉크젯용 자외선 경화 백색 잉크 조성물, 이를 이용하는 화이트 베젤 패턴의 제조방법 및 이에 따라 제조한 화이트 베젤 패턴을 포함하는 전자소자에 관한 것이다.The present invention relates to an ultraviolet curable white ink composition for inkjet, a method of manufacturing a white bezel pattern using the same, and an electronic device including a white bezel pattern manufactured according to the present invention. The present invention relates to an ultraviolet curable white ink composition for inkjet, which may exhibit improved adhesion, and to a method of manufacturing a white bezel pattern using the same, and an electronic device including the white bezel pattern manufactured thereby.
화이트 베젤(bezel)의 경우 안료 특성상 은폐력을 갖기 위해서는 두께 30㎛ 수준으로 베젤을 인쇄해야 하는데, 기존에는 대부분 스크린 프린팅(screen printing) 방식으로 화이트 4도 인쇄(1도 인쇄마다 7㎛) 및 블랙 또는 그레이 1도 인쇄(7㎛)하여 은폐력 및 차광특성을 확보하였다. 하지만, 1도 인쇄마다 경화공정(오븐 - 160℃, 10분)이 포함되어 공정이 복잡하고 시간이 오래 걸리는 단점이 있다. 이러한 문제를 해결하기 위해서는 화이트 베젤을 한 번에 인쇄하고 자외선 경화함으로써 공정 단순화 및 시간단축을 할 수 있는 잉크젯용 자외선 경화 화이트 잉크의 개발이 필요한 실정이다.In the case of the white bezel (bezel), the bezel should be printed with a thickness of 30㎛ in order to have hiding power due to the characteristic of the pigment. In the past, most of the white bezels are white 4 degree printing (7 μm per 1 degree printing) and black or Gray 1 degree printing (7 micrometers) was ensured the hiding power and the light-shielding characteristic. However, there is a disadvantage that the process is complicated and takes a long time because the curing process (oven-160 ° C., 10 minutes) is included in every printing. In order to solve this problem, it is necessary to develop an ultraviolet-curable white ink for inkjet that can simplify the process and shorten the time by printing the white bezel at once and UV curing.
화이트 베젤(bezel)은 기재에서 표면경도 5H, 부착력 5B, 은폐율 98% 이상, 색값 (L*>90, a*<±1, b*<±1), 고온 (200℃) 내열성, 내화학성을 요구한다. 또한, 터치스크린패널 베젤용 자외선 경화 화이트 잉크는 강화유리뿐만 아니라 다양한 기재에 적용될 수 있어야 하며, 잉크젯용 잉크로 젯팅 성능이 우수해야 하고 고온 열처리 후에도 황변이 없고 베젤 성능이 우수하게 나타나야 한다. 특히 커버 글라스 일체형 터치 패널은 베젤을 인쇄하고 그 위에 전극을 증착하기 때문에 200℃ 이상의 온도에서 내열성이 확보되어야 한다.The white bezel has a surface hardness of 5H, adhesion of 5B, hiding rate of 98% or more, color value (L *> 90, a * <± 1, b * <± 1), high temperature (200 ° C) heat resistance, chemical resistance Requires. In addition, the UV curable white ink for the touch screen panel bezel should be applied to various substrates as well as tempered glass, and should be excellent in jetting performance with ink jet ink and excellent yellowing after high temperature heat treatment and excellent bezel performance. In particular, since the cover glass integrated touch panel prints a bezel and deposits electrodes thereon, heat resistance must be ensured at a temperature of 200 ° C. or higher.
상기 종래 기술의 문제점을 해결하기 위하여, 본 발명은 1회 공정으로 은폐력을 가질 정도의 두께로 베젤을 형성할 수 있고, 고온 열처리에도 황변 현상이 발생하지 않고, 향상된 부착력을 나타낼 수 있는 잉크젯용 자외선 경화 백색 잉크 조성물, 이를 이용하는 화이트 베젤 패턴의 제조방법 및 이에 따라 제조한 화이트 베젤 패턴을 포함하는 전자소자를 제공하는 것을 목적으로 한다.In order to solve the problems of the prior art, the present invention can form a bezel with a thickness enough to have a concealment force in one process, the yellowing phenomenon does not occur even at high temperature heat treatment, it can exhibit an improved adhesion force An object of the present invention is to provide a cured white ink composition, a method of manufacturing a white bezel pattern using the same, and an electronic device including the white bezel pattern manufactured accordingly.
상기 과제를 해결하기 위하여, 본 발명은 안료 분산액, 바인더 용액, 단관능 모노머 및 광개시제를 포함하는 잉크젯용 자외선 경화 백색 잉크 조성물로서, 패턴 형성 시 두께가 30㎛ 이하이고 은폐율이 98% 이상인 잉크젯용 자외선 경화 백색 잉크 조성물을 제공한다.In order to solve the above problems, the present invention is a UV-curable white ink composition for inkjet comprising a pigment dispersion, a binder solution, a monofunctional monomer and a photoinitiator, when forming a pattern for inkjet ink having a thickness of 30㎛ or less and 98% or more It provides an ultraviolet curable white ink composition.
본 발명은 a) 기판에 본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물을 30㎛ 이하의 두께로 잉크젯 프린팅하여 화이트 베젤이 형성된 기판을 제조하는 단계; b) 상기 기판에 1000 mJ/㎠ 이상의 자외선을 조사하여 경화된 화이트 베젤 패턴을 형성하는 단계; 및 c) 상기 기판을 열처리하는 단계를 포함하는, 잉크젯용 자외선 경화 백색 잉크 조성물을 이용하는 화이트 베젤 패턴의 제조방법을 제공한다.The present invention comprises the steps of: a) inkjet printing the UV-curable white ink composition for inkjet of the present invention on a substrate to a thickness of 30㎛ or less to prepare a substrate having a white bezel formed; b) irradiating the substrate with ultraviolet light of 1000 mJ / cm 2 or more to form a cured white bezel pattern; And c) provides a method for producing a white bezel pattern using a UV curable white ink composition for inkjet, comprising the step of heat-treating the substrate.
또한, 본 발명은 상기 제조방법을 이용하여 제조한 화이트 베젤 패턴을 제공한다.In addition, the present invention provides a white bezel pattern manufactured using the manufacturing method.
또한, 본 발명은 상기 화이트 베젤 패턴을 포함하는 전자소자를 제공한다.In addition, the present invention provides an electronic device including the white bezel pattern.
본 발명에 따르면 잉크 조성물에 포함되는 안료 함량을 잉크젯용 잉크로 적용 가능한 범위 내에서 조절함으로써 두께 30㎛ 이하, 은폐율 98% 이상의 화이트 베젤 패턴을 1회 인쇄로 제조할 수 있다.According to the present invention, the white bezel pattern having a thickness of 30 μm or less and a concealment rate of 98% or more may be manufactured by one printing by controlling the pigment content included in the ink composition within the range applicable to the inkjet ink.
본 발명에 따라 제조한 화이트 베젤 패턴은 고온 열처리(220℃, 30분) 후에도 황변이 발생하지 않으며, 향상된 부착력을 나타낼 수 있다.The white bezel pattern manufactured according to the present invention does not generate yellowing even after high temperature heat treatment (220 ° C., 30 minutes), and may exhibit improved adhesion.
이하, 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
본 발명에 따른 잉크젯용 자외선 경화 백색 잉크 조성물은 안료 분산액, 바인더 용액, 단관능 모노머 및 광개시제를 포함하고, 패턴 형성 시 두께가 30㎛ 이하이고 은폐율이 98% 이상인 것을 특징으로 한다.The ultraviolet curable white ink composition for inkjet according to the present invention comprises a pigment dispersion, a binder solution, a monofunctional monomer and a photoinitiator, and has a thickness of 30 μm or less and a hiding rate of 98% or more when forming a pattern.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물에 포함되는 상기 안료 분산액은 백색 안료, 제1 반응성 모노머 및 분산제를 포함할 수 있다.The pigment dispersion in the UV curable white ink composition for inkjet of the present invention may include a white pigment, a first reactive monomer and a dispersant.
상기 백색 안료로는 이산화티타늄(TiO2), 산화아연 등을 사용할 수 있으며, 반사율을 높여 조성물로 형성한 패턴에 은폐력을 부여하는 역할을 한다. Titanium dioxide (TiO 2 ), zinc oxide, or the like may be used as the white pigment, and serves to impart hiding power to the pattern formed of the composition by increasing the reflectance.
본 발명의 잉크 조성물은 상기 백색 안료를 안료 분산액의 총 중량에 대하여 55 내지 70중량%로 포함하는 것이 바람직하다. 55중량% 미만인 경우 은폐특성이 미흡하고, 70중량% 초과인 경우 분산이 어렵다.It is preferable that the ink composition of this invention contains 55 to 70 weight% of the said white pigment with respect to the total weight of a pigment dispersion. If it is less than 55% by weight, the concealment characteristics are insufficient, and if it is more than 70% by weight, dispersion is difficult.
상기 제1 반응성 모노머로는 3관능성 아크릴레이트계 모노머와 2관능성 아크릴레이트계 모노머를 사용할 수 있다.As the first reactive monomer, a trifunctional acrylate monomer and a bifunctional acrylate monomer may be used.
상기 3관능성 아크릴레이트계 모노머로 트리메틸올프로판 트리아크릴레이트(trimethylolpropane triacrylate: TMPTA), 펜타에리스리톨 트리아크릴레이트, 트리메틸렌프로판 트리아크릴레이트, 펜타에리스톨 트리아크릴레이트, 트리메틸렌 프로필 트리아크릴레이트, 프로폭시레이티드 글리세롤 트리아크릴레이트 등을 단독 또는 혼합하여 사용할 수 있다.As the trifunctional acrylate monomer, trimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate, trimethylene propane triacrylate, pentaerythol triacrylate, trimethylene propyl triacrylate, and pro Foxylated glycerol triacrylate etc. can be used individually or in mixture.
상기 2관능성 아크릴레이트계 모노머로 1,6-헥산디올 디아크릴레이트(1,6-hexanediol diacrylate, HDDA), 네오펜틸글리콜 디아크릴레이트(neopentylglycol diacrylate, NPGDA), 디프로필렌글리콜 디아크릴레이트(dipropylene glycol diacrylate, DPGDA), 트리프로필렌글리콜 디아크릴레이트(Tripropylene Glycol Diacrylate, TPGDA) 등을 단독 또는 혼합하여 사용하는 것이 바람직하다.As the bifunctional acrylate monomer, 1,6-hexanediol diacrylate (1,6-hexanediol diacrylate, HDDA), neopentyl glycol diacrylate (neopentylglycol diacrylate, NPGDA), dipropylene glycol diacrylate (dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (Tripropylene Glycol Diacrylate, TPGDA) is preferably used alone or in combination.
상기 제1 반응성 모노머는 상기 안료 분산액의 총 중량에 대하여 30 ~ 50 중량%로 포함되는 것이 바람직하다.The first reactive monomer is preferably included in 30 to 50% by weight based on the total weight of the pigment dispersion.
상기 분산제로는 고분자형, 비이온성, 음이온성, 또는 양이온성 분산제를 사용할 수 있으며, 그 예로는 폴리알킬렌글리콜 및 이의 에스테르, 폴리옥시알킬렌 다가알콜, 에스테르알킬렌 옥사이드 부가물, 알코올알킬렌옥사이드 부가물, 설폰산 에스테르, 설폰산염, 카르복실산에스테르, 카르복실산염, 알킬아미드알킬렌옥사이드 부가물, 또는 알킬아민 등이 있다. 이들은 단독으로 첨가하거나 2 이상 혼합하여 사용할 수 있다.The dispersant may be a polymeric, nonionic, anionic, or cationic dispersant, and examples thereof include polyalkylene glycols and esters thereof, polyoxyalkylene polyhydric alcohols, ester alkylene oxide adducts, and alcohol alkylenes. Oxide adducts, sulfonic acid esters, sulfonates, carboxylic acid esters, carboxylates, alkylamide alkylene oxide adducts, alkylamines and the like. These may be added alone or used by mixing two or more.
상기 분산제는 상기 안료 분산액의 총 중량에 대하여 2 ~ 6 중량%로 포함되는 것이 바람직하다.The dispersant is preferably included in 2 to 6% by weight based on the total weight of the pigment dispersion.
상기 안료 분산액은 잉크 조성물의 총 중량에 대하여 50 ~ 70 중량%로 포함되는 것이 바람직하다.The pigment dispersion is preferably included in 50 to 70% by weight relative to the total weight of the ink composition.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물에 포함되는 상기 바인더 용액은 에폭시계 수지와 제2 반응성 모노머로 구성된다.The binder solution included in the ultraviolet curable white ink composition for inkjet of the present invention is composed of an epoxy resin and a second reactive monomer.
상기 에폭시계 수지는 바인더 용액의 총 중량에 대하여 20 ~ 40 중량%로 포함된다.The epoxy resin is included in 20 to 40% by weight based on the total weight of the binder solution.
상기 제2 반응성 모노머는 바인더를 희석시키는 역할을 하며. 2관능성 아크릴레이트계 모노머, 단관능 모노머 또는 이들의 혼합물을 사용할 수 있다. 상기 2관능성 아크릴레이트계 모노머로 1,6-헥산디올 디아크릴레이트(1,6-hexanediol diacrylate, HDDA), 네오펜틸글리콜 디아크릴레이트(neopentylglycol diacrylate, NPGDA), 디프로필렌글리콜 디아크릴레이트(dipropylene glycol diacrylate, DPGDA), 트리프로필렌글리콜 디아크릴레이트(Tripropylene Glycol Diacrylate, TPGDA) 등을 단독 또는 혼합하여 사용할 수 있다.The second reactive monomer serves to dilute the binder. A bifunctional acrylate monomer, a monofunctional monomer, or a mixture thereof can be used. As the bifunctional acrylate monomer, 1,6-hexanediol diacrylate (1,6-hexanediol diacrylate, HDDA), neopentyl glycol diacrylate (neopentylglycol diacrylate, NPGDA), dipropylene glycol diacrylate (dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (Tripropylene Glycol Diacrylate, TPGDA) and the like can be used alone or in combination.
상기 단관능 모노머는 2-히드록시에틸 아크릴레이트(2-hydroxyethyl acrylate, 2-HEA), 이소보닐 아크릴레이트 (IBOA), 페녹시에틸 아크릴레이트 (PEA), 페놀 아크릴레이트 등을 단독 또는 혼합하여 사용하는 것이 바람직하다. The monofunctional monomer is used alone or in combination of 2-hydroxyethyl acrylate (2-hydroxyethyl acrylate, 2-HEA), isobornyl acrylate (IBOA), phenoxyethyl acrylate (PEA), phenol acrylate and the like It is desirable to.
상기 제2 반응성 모노머는 바인더 용액의 총 중량에 대하여 60 ~ 80 중량%로 포함된다.The second reactive monomer is included in 60 to 80% by weight based on the total weight of the binder solution.
상기 바인더 용액은 잉크 조성물의 총 중량에 대하여 1 ~ 15 중량%로 포함된다. 1 중량% 미만이면 기재와 인쇄 층의 부착력 및 막 강도가 충분하지 않고, 15 중량% 초과이면 점도가 너무 높아 잉크젯 공정이 어렵다.The binder solution is included in an amount of 1 to 15% by weight based on the total weight of the ink composition. If it is less than 1% by weight, the adhesion and film strength of the substrate and the print layer are not sufficient, and if it is more than 15% by weight, the viscosity is too high and the inkjet process is difficult.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물에 포함되는 상기 단관능 모노머는 잉크의 점도를 낮추면서 기재와 인쇄 층의 부착력을 향상시키는 역할을 한다. 상기 단관능 모노머는, 히드록시 관능기를 갖는 것을 사용할 수 있으며, 바람직하게는 2-히드록시에틸 아크릴레이트(2-hydroxyethyl acrylate, 2-HEA), 히드록시프로필 아크릴레이트(hydroxypropyl acrylate, HPMA), 2-히드록시에틸 메타크릴레이트(2-hydroxyethyl methacrylate, 2-HEMA), 히드록시프로필 메타크릴레이트(hydroxypropyl methacrylate, HPMA) 및 4-Hydroxybutyl acrylate(4HBA)로 이루어지는 군에서 선택된 1종 이상의 모노머를 사용할 수 있으며, 가장 바람직하게는 2-히드록시에틸 아크릴레이트(2-hydroxyethyl acrylate, 2-HEA)의 모노머를 사용할 수 있다.The monofunctional monomer included in the ultraviolet curable white ink composition for inkjet of the present invention serves to improve the adhesion between the substrate and the printing layer while lowering the viscosity of the ink. As the monofunctional monomer, one having a hydroxy functional group may be used, preferably 2-hydroxyethyl acrylate (2-HEA), hydroxypropyl acrylate (HPMA), 2 -One or more monomers selected from the group consisting of hydroxyethyl methacrylate (2-HEMA), hydroxypropyl methacrylate (HPMA) and 4-Hydroxybutyl acrylate (4HBA) can be used. Most preferably, a monomer of 2-hydroxyethyl acrylate (2-HEA) may be used.
상기 단관능 모노머는 잉크 조성물의 총 중량에 대하여 5 ~ 25 중량%, 보다 바람직하게는 10 ~ 20 중량%로 포함될 수 있다. 5 중량% 미만이면 부착력이 미흡하고, 25 중량%를 초과하면 안료 함량이 적어 막의 광 차단특성이 충분하지 못하다.The monofunctional monomer may be included in 5 to 25% by weight, more preferably 10 to 20% by weight relative to the total weight of the ink composition. If it is less than 5% by weight, the adhesion is insufficient, and if it is more than 25% by weight, the pigment content is low, so that the light blocking property of the film is insufficient.
본 발명의 잉크 조성물은 부착력 증진을 위해 종래 기술과 같이, butyl carbitol acetate 등의 용매를 포함하지 않는 무용제(solvent-free) 형태로 사용하며, 부착력 증진제로서 히드록시 관능기를 갖는 단관능 모노머, 예를 들어 2-HEA 등의 아크릴레이트 모노머를 포함할 수 있다.The ink composition of the present invention is used in a solvent-free form containing no solvent, such as butyl carbitol acetate, to promote adhesion, and is a monofunctional monomer having a hydroxy functional group as an adhesion promoter. For example, it may contain an acrylate monomer such as 2-HEA.
상기 광개시제는 자외선 경화형 과정에서 잉크에 함유된 불포화 이중결합을 갖는 모노머가 반응하여 고분자를 형성하는 경화 반응을 개시하는 역할을 한다.The photoinitiator serves to initiate a curing reaction in which a monomer having an unsaturated double bond contained in the ink reacts to form a polymer in an ultraviolet curing process.
본 발명에서는 광개시제로서, 에틸-2, 4, 6 트리메틸벤조일페닐 포스피네이트 옥사이드 (Ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate oxide)를 포함하는 것을 사용할 수 있으며, 구체적으로는 Lucirin® TPO(2,4,6-Trimethylbenzoyldiphenylphosphine oxide, BASF사 제조), Irgacure 2100, Irgacure 819 등을 사용할 수 있다. 특히, 광개시제로 Lucirin® TPO를 사용하면 고온 열처리(220℃, 30분) 후에도 황변 현상이 발생하지 않고, 경화 및 용해도가 우수하다. 상기 광개시제는 잉크 조성물의 총 중량에 대하여 1 ~ 10 중량%로 포함되는 것이 바람직하다. 광개시제의 함량이 1 중량% 미만이면 경화 반응이 충분하지 않고 10 중량% 초과이면 모두 용해되지 않을 수 있다.In the present invention, as the photoinitiator, one containing ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate oxide (Ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate oxide) can be used, specifically Lucirin® TPO (2,4 , 6-Trimethylbenzoyldiphenylphosphine oxide, manufactured by BASF Corporation), Irgacure 2100, Irgacure 819 and the like can be used. In particular, when Lucirin® TPO is used as a photoinitiator, yellowing does not occur after high temperature heat treatment (220 ° C, 30 minutes), and curing and solubility are excellent. The photoinitiator is preferably included in 1 to 10% by weight based on the total weight of the ink composition. If the content of the photoinitiator is less than 1% by weight, the curing reaction may not be sufficient, and if it is more than 10% by weight, all of them may not be dissolved.
또한 본 발명의 잉크 조성물은 광개시제로서, 황변을 나타내는 광개시제 Irgacure 907, Irgacure 754, Irgacure 2959, Darocure MBF, Irgacure 184 등은 사용하지 않는다.In addition, the ink composition of the present invention, as a photoinitiator, photoinitiators Irgacure 907, Irgacure 754, Irgacure 2959, Darocure MBF, Irgacure 184, etc., which exhibit yellowing, are not used.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물은, 상기 구성 외에, 올리고머, 다관능 모노머, 중합억제제 및 계면활성제로 이루어지는 군에서 선택되는 어느 하나 이상을 더 포함할 수 있다.The ultraviolet curable white ink composition for ink jet of the present invention may further include any one or more selected from the group consisting of oligomers, polyfunctional monomers, polymerization inhibitors, and surfactants, in addition to the above-described configuration.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물에 있어서, 상기 다관능 모노머 또는 올리고머는 자외선 경화를 통해 가교결합을 일으켜 인쇄 층의 막 강도를 증가시키는 역할을 한다. In the UV curable white ink composition for inkjet of the present invention, the multifunctional monomer or oligomer acts as a crosslink through UV curing to increase the film strength of the print layer.
상기 올리고머는 다관능 아크릴레이트(메타크릴레이트), 우레탄아크릴레이트, 폴리에스테르아크릴레이트, 에폭시아크릴레이트, 멜라민아크릴레이트 등을 포함하는 아크릴계 올리고머 또는 이들의 중합체 등을 사용할 수 있다.The oligomer may be an acrylic oligomer or a polymer thereof, including polyfunctional acrylate (methacrylate), urethane acrylate, polyester acrylate, epoxy acrylate, melamine acrylate and the like.
상기 다관능 모노머는 예를 들면 관능성기가 4 내지 6 이상인 것이 바람직하며, 펜타에리스리톨 테트라아크릴레이트(PETA), 디펜타에리스리톨 펜타아크릴레이트 (DPPA), 디펜타에리스리톨 헥사아크릴레이트(DPHA) 로 이루어지는 군에서 선택된 1종 이상의 모노머를 사용할 수 있으며, 가장 바람직하게는 디펜타에리스리톨 헥사아크릴레이트(DPHA)를 사용할 수 있다.The polyfunctional monomer is preferably a functional group having 4 to 6 or more, for example, a group consisting of pentaerythritol tetraacrylate (PETA), dipentaerythritol pentaacrylate (DPPA), and dipentaerythritol hexaacrylate (DPHA). One or more monomers selected from may be used, and most preferably dipentaerythritol hexaacrylate (DPHA) may be used.
상기 올리고머 또는 다관능 모노머는 잉크 조성물의 총 중량에 대하여 1 ~ 15 중량%로 포함되는 것이 바람직하다. 1 중량% 미만이면 막의 강도가 충분하지 않고 15 중량% 초과이면 잉크의 점도가 너무 높아져서 공정이 불가능할 수 있다.The oligomer or polyfunctional monomer is preferably included in 1 to 15% by weight based on the total weight of the ink composition. If it is less than 1% by weight, the film has insufficient strength, and if it is more than 15% by weight, the viscosity of the ink may be so high that the process may be impossible.
본 발명의 잉크 조성물은 추가로 중합억제제 및 계면활성제를 잔량 포함할 수 있다.The ink composition of the present invention may further contain a residual amount of a polymerization inhibitor and a surfactant.
상기 중합억제제는 잉크가 상온에서 보관하는 동안 경화반응이 일어나지 않도록 하는 역할을 한다. The polymerization inhibitor serves to prevent the curing reaction from occurring while the ink is stored at room temperature.
상기 중합억제제로는 모노메틸에테르하이드로퀴논(Mono Methyl Ether Hydroquinone, MEHQ), 벤조퀴논, 카테콜, 페노티아진, N-니트로소페닐히드록시아민 및 2,2,6,6-테트라메틸피페리딘-1-옥실 유리 라디칼 및 이들의 유도체로부터 선택된 1종 이상을 사용할 수 있다.The polymerization inhibitors include mono methyl ether hydroquinone (MEHQ), benzoquinone, catechol, phenothiazine, N-nitrosophenylhydroxyamine and 2,2,6,6-tetramethylpiperi. One or more selected from dean-1-oxyl free radicals and derivatives thereof can be used.
상기 계면활성제는 잉크의 표면장력을 조절하여 젯팅이 원활하게 일어나게 하며 유리 기판에서 잉크가 적절하게 퍼지도록 하는 역할을 한다.The surfactant controls the surface tension of the ink to facilitate jetting and to properly spread the ink on the glass substrate.
상기 계면활성제는 실리콘계 계면활성제 또는 불소계 계면활성제이며, 구체적으로 실리콘계 계면활성제는 BYK-Chemie 사의 BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307, BYK-310, BYK-320, BYK-322, BYK-323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-348, BYK-354, BYK-355, BYK-356, BYK-358, BYK-361, BYK-370, BYK-371, BYK-373, BYK-375, BYK-380, BYK-390 등을 사용할 수 있으며, 불소계 계면활성제로는 DIC(DaiNippon Ink & Chemicals) 사의 F-114, F-177, F-410, F-411, F-450, F-493, F-494, F-443, F-444, F-445, F-446, F-470, F-471, F-472SF, F-474, F-475, F-477, F-478, F-479, F-480SF, F-482, F-483, F-484, F-486, F-487, F-172D, MCF-350SF, TF-1025SF, TF-1117SF, TF-1026SF, TF-1128, TF-1127, TF-1129, TF-1126, TF-1130, TF-1116SF, TF-1131, TF1132, TF1027SF, TF-1441, TF-1442 등을 사용할 수 있으나, 이에만 한정되는 것은 아니다.The surfactant is a silicone-based surfactant or a fluorine-based surfactant, specifically, the silicone-based surfactant is BYK-Chemie's BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307 , BYK-310, BYK-320, BYK-322, BYK-323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-348, BYK -354, BYK-355, BYK-356, BYK-358, BYK-361, BYK-370, BYK-371, BYK-373, BYK-375, BYK-380, BYK-390, etc. Active agents include F-114, F-177, F-410, F-411, F-450, F-493, F-494, F-443, F-444 and F-445 by DaiNippon Ink & Chemicals (DIC). , F-446, F-470, F-471, F-472SF, F-474, F-475, F-477, F-478, F-479, F-480SF, F-482, F-483, F -484, F-486, F-487, F-172D, MCF-350SF, TF-1025SF, TF-1117SF, TF-1026SF, TF-1128, TF-1127, TF-1129, TF-1126, TF-1130 , TF-1116SF, TF-1131, TF1132, TF1027SF, TF-1441, TF-1442, etc. may be used, but is not limited thereto.
본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물은 부착력 증진을 위해 종래 기술과 같이, butyl carbitol acetate 등의 용매를 포함하지 않는 대신, 부착력 증진제로서 히드록시 관능기를 갖는 단관능 모노머, 예를 들어 2-HEA 등의 아크릴레이트 모노머를 포함하기 때문에, 무용제(solvent-free) 형태로 사용할 수 있다. The ultraviolet curable white ink composition for inkjet of the present invention does not include a solvent such as butyl carbitol acetate to improve adhesion, but instead of a monofunctional monomer having a hydroxy functional group as an adhesion promoter, for example, 2-HEA. Since it contains an acrylate monomer such as, it can be used in a solvent-free form.
또한, 본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물은 상기와 같은 조성을 가짐에 따라서, 상온에서 점도가 10~50 cP이고, 60℃에서 점도가 5~50 cP이므로 잉크젯 공정성 및 저장 안정성이 뛰어나고, 잉크 조성물에 포함되는 안료 함량을 잉크젯용 잉크로 적용 가능한 범위 내에서 조절함으로써 두께 30㎛ 이하, 은폐율 98% 이상의 화이트 베젤 패턴을 제조할 수 있다.In addition, the ultraviolet-curable white ink composition for inkjet of the present invention has a composition as described above, the viscosity is 10 to 50 cP at room temperature, the viscosity is 5 to 50 cP at 60 ℃, it is excellent in inkjet processability and storage stability, ink By adjusting the pigment content contained in the composition within the range applicable to the inkjet ink, a white bezel pattern having a thickness of 30 μm or less and a hiding rate of 98% or more can be manufactured.
또한, 본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물은 상기와 같은 조성을 가짐에 따라서, 고온 열처리(200℃, 30분) 후에도 황변이 발생하지 않으며, 향상된 부착력을 나타낼 수 있어, 베젤을 형성하는데 유리하다.In addition, the UV-curable white ink composition for inkjet of the present invention has the composition as described above, yellowing does not occur even after high temperature heat treatment (200 ° C., 30 minutes), and can exhibit improved adhesion, which is advantageous for forming bezels. .
또한, 본 발명은 a) 기판에 본 발명의 잉크젯용 자외선 경화 백색 잉크 조성물을 30㎛ 이하의 두께로 잉크젯 프린팅하여 화이트 베젤이 형성된 기판을 제조하는 단계; b) 상기 기판에 1000 mJ/㎠ 이상의 자외선을 조사하여 경화된 화이트 베젤 패턴을 형성하는 단계; 및 c) 상기 기판을 열처리하는 단계를 포함하는, 잉크젯용 자외선 경화 백색 잉크 조성물을 이용하는 화이트 베젤 패턴의 제조방법을 제공한다.In addition, the present invention comprises the steps of a) inkjet printing the ultraviolet curable white ink composition for inkjet of the present invention on a substrate to a thickness of 30㎛ or less to prepare a substrate having a white bezel formed; b) irradiating the substrate with ultraviolet light of 1000 mJ / cm 2 or more to form a cured white bezel pattern; And c) provides a method for producing a white bezel pattern using a UV curable white ink composition for inkjet, comprising the step of heat-treating the substrate.
상기 단계 b)는 395㎚ UV LED lamp를 이용하여 두께 30㎛를 기준으로 1000 mJ/cm2 이상의 자외선을 조사하는 단계일 수 있다.Step b) may be a step of irradiating ultraviolet light of 1000 mJ / cm 2 or more based on a thickness 30㎛ using a 395nm UV LED lamp.
상기 단계 c)는 자외선 경화 후에, 150~180℃, 10~30분의 조건으로 베젤이 형성된 기판을 열처리하는 단계일 수 있다. 상기 열처리는 오븐 또는 핫플레이트 내에서 할 수 있다. 상기 단계 c)는 베젤의 부착력 향상을 목적으로 자외선 경화 후에 추가되는 단계이다. 상기 단계 c)는 기판의 종류(예를 들어 필름)에 따라 필요 없을 수도 있다. 본 발명의 일 실시예에서, 자외선 경화 후 열처리 공정을 실시함으로써 베젤 패턴의 부착력을 5B 수준으로 향상시킬 수 있었다. The step c) may be a step of heat-treating the substrate on which the bezel is formed under conditions of 150 to 180 ° C. and 10 to 30 minutes after UV curing. The heat treatment may be performed in an oven or a hot plate. Step c) is a step added after the ultraviolet curing for the purpose of improving the adhesion of the bezel. Step c) may not be necessary depending on the type of substrate (eg film). In one embodiment of the present invention, by performing a heat treatment process after UV curing it was possible to improve the adhesion of the bezel pattern to 5B level.
또한, 본 발명은 상기 제조방법을 이용하여 제조한 화이트 베젤 패턴을 제공한다.In addition, the present invention provides a white bezel pattern manufactured using the manufacturing method.
상기 화이트 베젤 패턴은 두께 30㎛이하에서 은폐율 98% 이상, 표면경도 5H 이상, 부착력 5B, 색값 (L*>90, a*<±1, b*<±1) 등의 물성을 나타낼 수 있다.The white bezel pattern may exhibit physical properties such as a concealment rate of 98% or more, a surface hardness of 5H or more, an adhesive force of 5B, a color value (L *> 90, a * <± 1, b * <± 1), and a thickness of 30 μm or less. .
또한, 본 발명은 전술한 화이트 베젤 패턴을 포함하는 전자소자를 제공한다. 상기 전자소자는 액정표시장치, 디스플레이, 터치 패널 등일 수 있으나, 이에 한정되는 것은 아니며, 터치 패널인 것이 바람직하다. 터치 패널용 패턴은 액정표시장치용 블랙 매트릭스 패턴에 비하여 매우 단순하여 잉크젯 프린팅 공정을 통하여 쉽게 형성할 수 있기 때문이다.In addition, the present invention provides an electronic device comprising the white bezel pattern described above. The electronic device may be a liquid crystal display, a display, a touch panel, and the like, but is not limited thereto. The electronic device may be a touch panel. This is because the touch panel pattern is very simple compared to the black matrix pattern for the liquid crystal display device and can be easily formed through the inkjet printing process.
본 발명에 따른 전자소자는 전술한 본 발명에 따른 패턴을 포함하는 것을 제외하고는 당기술 분야에 알려진 구성을 가질 수 있다.The electronic device according to the present invention may have a configuration known in the art except for including the pattern according to the present invention described above.
이하 실시예 및 비교예를 통하여 본 발명을 더욱 상세하게 설명한다. 그러나, 이하의 실시예 및 비교예는 본 발명을 예시하기 위한 것이며, 이에 의하여 본 발명의 범위가 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the following Examples and Comparative Examples are for illustrating the present invention, and the scope of the present invention is not limited thereto.
실시예Example
하기 표 1 및 표 2와 같은 조성으로 잉크 조성물을 혼합하였으며, 상기 혼합물을 5시간 동안 교반하여 실시예 1 내지 실시예 3 및 비교예 1 내지 비교예 8의 자외선 경화 백색 잉크 조성물을 제조하였다.The ink compositions were mixed in the compositions shown in Tables 1 and 2 below, and the mixture was stirred for 5 hours to prepare ultraviolet curable white ink compositions of Examples 1 to 3 and Comparative Examples 1 to 8.
표 1
　(각 수치는 중량% 기준) 실시예 1 실시예 2 실시예 3 비교예 1 비교예 2 비교예 3
안료분산액 안료 TiO2 36 36 36 30 36 36
분산제 870 1.8 1.8 1.8 1.5 1.8 1.8
모노머 HDDA 22.2 22.2 22.2 18.5 17.2 22.2
용매 BCA - - - - 5 -
올리고머/다관능모노머 DPHA 10 - 10 10 10 10
Oligomer - 10 - - - -
2 관능 모노머 HPNDA - - - 10 - 19.9
단관능 모노머 2-HEA 19.9 19.9 19.9 19.9 19.9 -
에폭시 레진 PD7610 2 2 2 2 2 2
부착력 증진제 KBM-403 3 3 3 3 3 3
KBM-503 - - - - - -
광개시제 TPO 5 5 - 5 5 5
I 2100 - - 5 - - -
I 184 - - - - - -
I 907 - - - - - -
계면활성제 BYK307 0.05 0.05 0.05 0.05 0.05 0.05
중합억제제 MEHQ 0.05 0.05 0.05 0.05 0.05 0.05
총합 100 100 100 100 100 100
Table 1
(Each figure is in weight percent) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3
Pigment Dispersion Pigment TiO 2 36 36 36 30 36 36
Dispersant 870 1.8 1.8 1.8 1.5 1.8 1.8
Monomer HDDA 22.2 22.2 22.2 18.5 17.2 22.2
menstruum BCA - - - - 5 -
Oligomer / Multifunctional Monomer DPHA 10 - 10 10 10 10
Oligomer - 10 - - - -
Bifunctional monomer HPNDA - - - 10 - 19.9
Monofunctional monomer 2-HEA 19.9 19.9 19.9 19.9 19.9 -
Epoxy resin PD7610 2 2 2 2 2 2
Adhesion promoter KBM-403 3 3 3 3 3 3
KBM-503 - - - - - -
Photoinitiator TPO 5 5 - 5 5 5
I 2100 - - 5 - - -
I 184 - - - - - -
I 907 - - - - - -
Surfactants BYK307 0.05 0.05 0.05 0.05 0.05 0.05
Polymerization inhibitor MEHQ 0.05 0.05 0.05 0.05 0.05 0.05
total 100 100 100 100 100 100
표 2
(각 수치는 중량% 기준) 비교예 4 비교예 5 비교예 6 비교예 7 비교예 8
안료분산액 안료 TiO2 36 36 36 36 36
분산제 870 1.8 1.8 1.8 1.8 1.8
모노머 HDDA 22.2 22.2 22.2 22.2 22.2
용매 BCA - - - - -
올리고머/다관능모노머 DPHA 10 10 10 10 10
Oligomer - - - - -
2 관능 모노머 HPNDA 16.9 - - - -
단관능 모노머 2-HEA 3 21.9 19.9 19.9 19.9
에폭시 레진 PD7610 2 0 2 2 2
부착력 증진제 KBM-403 3 3 - 3 3
KBM-503 - - 3 - -
광개시제 TPO 5 5 5 - -
I 2100 - - - - -
I 184 - - - 5 -
I 907 - - - - 5
계면활성제 BYK307 0.05 0.05 0.05 0.05 0.05
중합억제제 MEHQ 0.05 0.05 0.05 0.05 0.05
총합 100 100 100 100 100
TABLE 2
(Each figure is in weight percent) Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8
Pigment Dispersion Pigment TiO 2 36 36 36 36 36
Dispersant 870 1.8 1.8 1.8 1.8 1.8
Monomer HDDA 22.2 22.2 22.2 22.2 22.2
menstruum BCA - - - - -
Oligomer / Multifunctional Monomer DPHA 10 10 10 10 10
Oligomer - - - - -
Bifunctional monomer HPNDA 16.9 - - - -
Monofunctional monomer 2-HEA 3 21.9 19.9 19.9 19.9
Epoxy resin PD7610 2 0 2 2 2
Adhesion promoter KBM-403 3 3 - 3 3
KBM-503 - - 3 - -
Photoinitiator TPO 5 5 5 - -
I 2100 - - - - -
I 184 - - - 5 -
I 907 - - - - 5
Surfactants BYK307 0.05 0.05 0.05 0.05 0.05
Polymerization inhibitor MEHQ 0.05 0.05 0.05 0.05 0.05
total 100 100 100 100 100
870: Hybridur®870 (Air Products 사)870: Hybridur®870 (Air Products)
HDDA: 1,6-hexanediol diacrylateHDDA: 1,6-hexanediol diacrylate
BCA: butyl carbitol acetateBCA: Butyl Carbitol Acetate
DPHA: 디펜타에리스리톨 헥사아크릴레이트DPHA: dipentaerythritol hexaacrylate
Oligomer: 크레졸 노볼락 에폭시 올리고머 SC6400 (Miwon사)Oligomer: cresol novolac epoxy oligomer sc6400 (Miwon company)
HPNDA: Hydroxy Piperidinoic Acid Ester neopentyl Glycol DiacrylateHPNDA: Hydroxy Piperidinoic Acid Ester neopentyl Glycol Diacrylate
2-HEA: 2-hydroxyethyl acrylate2-HEA: 2-hydroxyethyl acrylate
PD7610: 에폭시 수지(Anderson 사)PD7610: epoxy resin (Anderson)
KBM-403: 신에츠사KBM-403: Shin-Etsu Corporation
KBM-503: 신에츠사 KBM-503: Shin-Etsusa
TPO: Lucirin® TPOTPO: Lucirin® TPO
I 2100: Irgacure 2100 (BASF 사)I 2100: Irgacure 2100 (BASF Corporation)
I 184: Irgacure 184 (BASF 사)I 184: Irgacure 184 (BASF)
I 907: Irgacure 907 (BASF 사)I 907: Irgacure 907 (BASF Corporation)
BYK307: (Byk사)BYK307: (by Byk)
MEHQ: Mono Methyl Ether Hydroquinone MEHQ: Mono Methyl Ether Hydroquinone
<표면경도 및 부착력 평가><Evaluation of surface hardness and adhesion>
상기 제조된 실시예 1 내지 3, 및 비교예 1 내지 8의 잉크 조성물을 가로 50mm, 세로 50mm, 두께 0.5mm의 크기의 정사각형 모양의 glass에 30㎛의 두께로 잉크젯 프린팅하고, 395㎚ UV LED lamp를 이용하여 1000 mJ/cm2 이상의 자외선을 조사하여 UV경화를 실시한 후 오븐에서 150℃의 온도로 15분 열처리하여 베젤 패턴 시편을 제조하였다. 이후 상기 시편을 오븐 내에서 220℃, 15분 열처리하여 베젤 패턴 시편을 제조하여, 표면경도 측정 실험 및 부착력 측정 실험을 수행하였다. 이후 상기 시편을 오븐 내에서 200℃, 30분 열처리 후 고온내열성 및 황변 평가를 수행하여 그 결과를 표 3 및 4에 나타냈다.The ink compositions of Examples 1 to 3 and Comparative Examples 1 to 8 prepared above were inkjet printed on a glass of a square shape having a width of 50 mm, a length of 50 mm, and a thickness of 0.5 mm, with a thickness of 30 μm, and a 395 nm UV LED lamp. UV curing was performed by irradiating UV light of 1000 mJ / cm 2 or more, and then heat-treated at 150 ° C. for 15 minutes in an oven to prepare a bezel pattern specimen. Thereafter, the specimens were heat-treated in an oven at 220 ° C. for 15 minutes to prepare bezel pattern specimens, and surface hardness measurement experiments and adhesion force measurement experiments were performed. Thereafter, the specimens were heat-treated at 200 ° C. for 30 minutes in an oven, and then subjected to high temperature heat resistance and yellowing. The results are shown in Tables 3 and 4.
표면경도 측정은 연필경도계로 측정하였으며, 긁기 각도 45도, 하중 500g 조건에서 측정하였다(규격: ASTM D3363). The surface hardness was measured by a pencil hardness tester, and was measured at a scraping angle of 45 degrees and a load of 500 g (standard: ASTM D3363).
부착력 측정은 크로스 컷 테스트(cross cut test)를 실시하여 부착력을 0B~5B로 평가하였다(규격: ASTM D3359). The adhesion was measured by a cross cut test to evaluate the adhesion between 0B and 5B (standard: ASTM D3359).
표 3
　 실시예 1 실시예 2 실시예 3 비교예 1 비교예 2 비교예 3
인쇄두께 (㎛) 27 27 27 30 27 27
은폐율 (%) 98 98 98 96 98 98
표면경도 5H 5H 5H 5H 　 　
Cross cut 5B 5B 5B 5B 　 　
고온 내열성 (200℃, 30min.)및 황변 OK OK OK OK NG(박리) NG(박리)
TABLE 3
Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3
Print thickness (㎛) 27 27 27 30 27 27
Concealment rate (%) 98 98 98 96 98 98
Surface hardness 5H 5H 5H 5H
Cross cut 5B 5B 5B 5B
High temperature heat resistance (200 ℃, 30min.) And yellowing OK OK OK OK NG (Peeling) NG (Peeling)
표 4
　 비교예 4 비교예 5 비교예 6 비교예 7 비교예 8
인쇄두께 (㎛) 27 27 27 27 27
은폐율 (%) 98 98 98 98 98
표면경도 5H 2H 5H 5H 5H
Cross cut 0B 2B 0B 5B 5B
고온 내열성 (200℃, 30min.)및 황변 OK OK OK NG(황변) NG(황변)
Table 4
Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8
Print thickness (㎛) 27 27 27 27 27
Concealment rate (%) 98 98 98 98 98
Surface hardness 5H 2H 5H 5H 5H
Cross cut 0B 2B 0B 5B 5B
High temperature heat resistance (200 ℃, 30min.) And yellowing OK OK OK NG (yellowing) NG (yellowing)
상기 표 3에서 비교예 1은 백색안료 (TiO2)를 분산액 총중량 기준으로 50중량% 포함하는 잉크 조성물로 30㎛ 두께로 베젤 패턴을 형성하면 은폐율 96%로 요구수준에 미치지 못하였다. In Table 3, Comparative Example 1 was an ink composition containing 50% by weight of white pigment (TiO 2 ) based on the total weight of the dispersion, and when the bezel pattern was formed to a thickness of 30 μm, the concealment rate was 96%.
그리고 비교예 2는 용매(butyl carbitol acetate)를 포함하는 잉크 조성물로 고온 열처리(200℃, 30분) 과정에서 베젤이 박리되는 현상이 관찰되었다.In Comparative Example 2, a phenomenon in which the bezel was peeled off during the high temperature heat treatment (200 ° C., 30 minutes) with an ink composition containing a solvent (butyl carbitol acetate) was observed.
비교예 3은 단관능 아크릴레이트인 2-HEA를 포함하지 않는 잉크조성물로 비교예 2와 마찬가지로 고온열처리 과정에서 베젤이 박리되는 문제가 있었다.Comparative Example 3 is an ink composition that does not contain 2-HEA, which is a monofunctional acrylate, and, like Comparative Example 2, has a problem in that the bezel is peeled off during the high temperature heat treatment.
또한, 표 4에서 비교예 4는 2-HEA를 3중량% 포함하고 있어 고온열처리 과정에서 베젤이 박리되지 않았지만 부착력이 0B로 나타났다.In addition, in Table 4, Comparative Example 4 contained 2 wt% of 2-HEA, so that the bezel was not peeled off during the high temperature heat treatment, but the adhesion was found to be 0B.
비교예 5는 에폭시 수지인 PD7610을 포함하지 않는 잉크조성물로 표면경도 (2H) 및 부착력 (5B)이 떨어졌으며, 비교예 6은 부착력 증진제로 KBM-503을 사용하였더니 부착력이 0B로 나타났다.In Comparative Example 5, the surface composition (2H) and the adhesive force (5B) of the ink composition does not include PD7610, an epoxy resin, was lowered. In Comparative Example 6, when KBM-503 was used as an adhesion promoter, the adhesion was found to be 0B.
비교예 7과 비교예 8은 광개시제로 Irgacure 184와 907을 사용하였으나 황변현상이 발생하였다.In Comparative Example 7 and Comparative Example 8, Irgacure 184 and 907 were used as photoinitiators, but yellowing occurred.
반면에, 표 3에서 실시예 1 내지 2의 용매 없이 아크릴레이트 모노머 (2-HEA)를 포함하는 잉크조성물은 표면경도 5H, 크로스 컷 테스트 5B로 베젤 성능이 우수하게 나타났고, 고온열처리 후에도 황변 및 물성 변화가 없었다. On the other hand, in Table 3, the ink composition containing the acrylate monomer (2-HEA) without the solvents of Examples 1 and 2 showed excellent bezel performance with a surface hardness of 5H and a cross cut test 5B. There was no change in physical properties.
또한 광개시제 Irgacure 2100이 포함된 실시예 3의 조성물도 황변이 발생하지 않았다.In addition, the composition of Example 3 containing the photoinitiator Irgacure 2100 did not occur yellowing.

Claims (28)

  1. 안료 분산액, 바인더 용액, 단관능 모노머 및 광개시제를 포함하는 잉크젯용 자외선 경화 백색 잉크 조성물로서, 패턴 형성 시 두께가 30㎛ 이하이고 은폐율이 98% 이상인 잉크젯용 자외선 경화 백색 잉크 조성물.An ultraviolet curable white ink composition for inkjets comprising a pigment dispersion, a binder solution, a monofunctional monomer, and a photoinitiator, wherein the pattern is 30 µm or less in thickness and a concealment ratio of 98% or more.
  2. 청구항 1에 있어서, The method according to claim 1,
    상기 잉크젯용 자외선 경화 백색 잉크 조성물은 올리고머, 다관능 모노머, 중합억제제 및 계면활성제로 이루어지는 군에서 선택되는 어느 하나 이상을 더 포함하는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The UV curable white ink composition for inkjet UV curable white ink compositions for inkjets, further comprising any one or more selected from the group consisting of oligomers, polyfunctional monomers, polymerization inhibitors and surfactants.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 단관능 모노머는 히드록시 관능기를 갖는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.Said monofunctional monomer has a hydroxy functional group, The ultraviolet curable white ink composition for inkjets characterized by the above-mentioned.
  4. 청구항 3에 있어서,The method according to claim 3,
    상기 단관능 모노머는, 2-히드록시에틸 아크릴레이트(2-hydroxyethyl acrylate, 2-HEA), 히드록시프로필 아크릴레이트(hydroxypropyl acrylate, HPMA), 2-히드록시에틸 메타크릴레이트(2-hydroxyethyl methacrylate, 2-HEMA) 및 히드록시프로필 메타크릴레이트(hydroxypropyl methacrylate, HPMA)로 이루어지는 군에서 선택된 1종 이상의 모노머인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The monofunctional monomers are 2-hydroxyethyl acrylate (2-hydroxyethyl acrylate, 2-HEA), hydroxypropyl acrylate (HPMA), 2-hydroxyethyl methacrylate (2-hydroxyethyl methacrylate, 2-HEMA) and hydroxypropyl methacrylate (hydroxypropyl methacrylate, HPMA) UV curable white ink composition for ink jet, characterized in that at least one monomer selected from the group consisting of.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 단관능 모노머는 잉크 조성물의 총 중량에 대하여 5 ~ 25 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The monofunctional monomer is UV curable white ink composition for an inkjet, characterized in that contained in 5 to 25% by weight relative to the total weight of the ink composition.
  6. 청구항 5에 있어서,The method according to claim 5,
    상기 단관능 모노머는 잉크 조성물의 총 중량에 대하여 10 ~ 20 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The monofunctional monomer is UV curable white ink composition for an inkjet, characterized in that contained in 10 to 20% by weight relative to the total weight of the ink composition.
  7. 청구항 1에 있어서, The method according to claim 1,
    상기 안료 분산액은 백색 안료, 제1 반응성 모노머 및 분산제를 포함하는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The pigment dispersion is a UV curable white ink composition for an inkjet, characterized in that it comprises a white pigment, a first reactive monomer and a dispersant.
  8. 청구항 7에 있어서, The method according to claim 7,
    상기 백색 안료는 이산화티타늄(TiO2)인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The white pigment is UV dioxide cured white ink composition, characterized in that the titanium dioxide (TiO 2 ).
  9. 청구항 7에 있어서, The method according to claim 7,
    상기 백색 안료는 안료 분산액 총 중량에 대하여 55 내지 70중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The white pigment is UV curable white ink composition for an inkjet, characterized in that contained in 55 to 70% by weight relative to the total weight of the pigment dispersion.
  10. 청구항 7에 있어서,The method according to claim 7,
    상기 제1 반응성 모노머는 2관능성 아크릴레이트계 모노머인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The first reactive monomer is an ultraviolet curable white ink composition for an inkjet, characterized in that a bifunctional acrylate monomer.
  11. 청구항 1에 있어서,The method according to claim 1,
    상기 바인더 용액은 에폭시계 수지와 제2 반응성 모노머로 구성되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The binder solution is an ultraviolet curable white ink composition for an inkjet, characterized in that consisting of an epoxy resin and a second reactive monomer.
  12. 청구항 11에 있어서,The method according to claim 11,
    상기 제2 반응성 모노머는 단관능 아크릴레이트계 모노머인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The second reactive monomer is a monofunctional acrylate monomer, characterized in that UV cure white ink composition for ink jet.
  13. 청구항 11에 있어서,The method according to claim 11,
    상기 제2 반응성 모노머는 바인더 용액의 총 중량에 대하여 60 ~ 80 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The second reactive monomer is UV curable white ink composition, characterized in that contained in 60 to 80% by weight relative to the total weight of the binder solution.
  14. 청구항 1에 있어서,The method according to claim 1,
    상기 바인더 용액은 잉크 조성물의 총 중량에 대하여 1 ~ 15 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The binder solution is UV-curable white ink composition for an inkjet, characterized in that contained in 1 to 15% by weight relative to the total weight of the ink composition.
  15. 청구항 1에 있어서,The method according to claim 1,
    상기 광개시제는 에틸-2, 4, 6 트리메틸벤조일페닐 포스피네이트(Ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate)를 포함하는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The photoinitiator is an ultraviolet curing white ink composition for ink jet, characterized in that it comprises ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate (Ethyl-2, 4, 6 trimethylbenzoylphenyl phosphinate).
  16. 청구항 1에 있어서,The method according to claim 1,
    상기 광개시제는 잉크 조성물의 총 중량에 대하여 1 ~ 10 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The photoinitiator UV curable white ink composition, characterized in that contained in 1 to 10% by weight relative to the total weight of the ink composition.
  17. 청구항 2에 있어서,The method according to claim 2,
    상기 다관능 모노머는 디펜타에리스리톨 헥사아크릴레이트(DPHA)인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The polyfunctional monomer is a dipentaerythritol hexaacrylate (DPHA), UV curable white ink composition for an ink jet.
  18. 청구항 2에 있어서,The method according to claim 2,
    상기 다관능 모노머는 잉크 조성물의 총 중량에 대하여 1 ~ 15 중량%로 포함되는 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The polyfunctional monomer is UV curable white ink composition for an inkjet, characterized in that contained in 1 to 15% by weight relative to the total weight of the ink composition.
  19. 청구항 1에 있어서,The method according to claim 1,
    상기 잉크젯용 자외선 경화 백색 잉크 조성물은 무용제(solvent-free) 형태인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The UV curable white ink composition for inkjet UV curable white ink composition, characterized in that the solvent-free (solvent-free) form.
  20. 청구항 1에 있어서,The method according to claim 1,
    상기 잉크젯용 자외선 경화 백색 잉크 조성물은 상온에서 점도가 10~50 cP인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.UV-curable white ink composition for inkjet UV-curable white ink composition for inkjet, characterized in that the viscosity at room temperature 10 ~ 50 cP.
  21. 청구항 1에 있어서,The method according to claim 1,
    상기 잉크젯용 자외선 경화 백색 잉크 조성물은 60℃에서 점도가 5~20 cP인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The UV curable white ink composition for inkjet UV curable white ink composition, characterized in that the viscosity of 5 ~ 20 cP at 60 ℃.
  22. 청구항 1에 있어서,The method according to claim 1,
    상기 잉크젯용 자외선 경화 백색 잉크 조성물은 베젤 형성용인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물.The UV curable white ink composition for inkjet UV curable white ink composition, characterized in that for bezel formation.
  23. a) 기판에 청구항 1의 잉크젯용 자외선 경화 백색 잉크 조성물을 30㎛ 이하의 두께로 잉크젯 프린팅하여 화이트 베젤이 형성된 기판을 제조하는 단계;a) preparing a substrate having a white bezel formed by inkjet printing the ultraviolet-curable white ink composition for inkjet of claim 1 to a thickness of 30 μm or less on a substrate;
    b) 상기 기판에 1000 mJ/㎠ 이상의 자외선을 조사하여 경화된 화이트 베젤 패턴을 형성하는 단계; 및 b) irradiating the substrate with ultraviolet light of 1000 mJ / cm 2 or more to form a cured white bezel pattern; And
    c) 상기 기판을 열처리하는 단계를 포함하는, 잉크젯용 자외선 경화 백색 잉크 조성물을 이용하는 화이트 베젤 패턴의 제조방법.c) a method of manufacturing a white bezel pattern using the ultraviolet curable white ink composition for inkjet, comprising the step of heat treating the substrate.
  24. 청구항 23에 있어서,The method according to claim 23,
    상기 단계 c)는 자외선 경화 후에, 150~180℃, 10~30분의 조건으로 베젤이 형성된 기판을 열처리하는 단계인 것을 특징으로 하는 잉크젯용 자외선 경화 백색 잉크 조성물을 이용하는 화이트 베젤 패턴의 제조방법.The step c) is a method of producing a white bezel pattern using an ultraviolet curable white ink composition for inkjet, characterized in that the step of heat-treating the substrate on which the bezel is formed under conditions of 150 ~ 180 ℃, 10-30 minutes after ultraviolet curing.
  25. 청구항 23의 제조방법을 이용하여 제조한 화이트 베젤 패턴.White bezel pattern manufactured using the manufacturing method of claim 23.
  26. 청구항 25에 있어서,The method according to claim 25,
    상기 화이트 베젤 패턴은 표면경도 5H 이상, 부착력 5B, 은폐율 98% 이상, 색값 (L*>90, a*<±1, b*<±1)인 것을 특징으로 하는 화이트 베젤 패턴.The white bezel pattern has a surface hardness of 5H or more, adhesion 5B, hiding rate of 98% or more, color values (L *> 90, a * <± 1, b * <± 1).
  27. 청구항 25의 화이트 베젤 패턴을 포함하는 전자소자.An electronic device comprising the white bezel pattern of claim 25.
  28. 청구항 27의 전자소자는 터치 패널인 것을 특징으로 하는 전자소자.The electronic device of claim 27, wherein the electronic device is a touch panel.
PCT/KR2015/012226 2014-11-13 2015-11-13 Ultraviolet curable white ink composition for inkjet printing, method for preparing white bezel pattern using same, and electronic device comprising white bezel pattern prepared by same WO2016076662A1 (en)

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US15/515,847 US9963602B2 (en) 2014-11-13 2015-11-13 Ultraviolet curable white ink composition for inkjet printing, method for preparing white bezel pattern using same, and electronic device comprising white bezel pattern prepared by same

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KR102073969B1 (en) * 2019-05-14 2020-02-06 (주)피스코 Ink composition for printing on reinforced glass
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