WO2024005452A1 - 하드코팅 조성물, 이를 적용한 하드코팅 필름, 윈도우 및 화상 표시 장치 - Google Patents
하드코팅 조성물, 이를 적용한 하드코팅 필름, 윈도우 및 화상 표시 장치 Download PDFInfo
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- WO2024005452A1 WO2024005452A1 PCT/KR2023/008706 KR2023008706W WO2024005452A1 WO 2024005452 A1 WO2024005452 A1 WO 2024005452A1 KR 2023008706 W KR2023008706 W KR 2023008706W WO 2024005452 A1 WO2024005452 A1 WO 2024005452A1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/106—Esters of polycondensation macromers
- C08F222/1061—Esters of polycondensation macromers of alcohol terminated polyesters or polycarbonates, e.g. polyester (meth)acrylates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/12—Esters of phenols or saturated alcohols
- C08F222/22—Esters containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
- C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/07—Aldehydes; Ketones
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- 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
- C09D135/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D135/02—Homopolymers or copolymers of esters
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- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Definitions
- the present invention relates to a hard coating composition, a hard coating film using the same, a window, and an image display device.
- image display devices such as liquid crystal display (LCD) devices or organic light emitting display (OLED) devices
- LCD liquid crystal display
- OLED organic light emitting display
- the image display device is widely applied to various smart devices characterized by portability, including smart phones and tablet PCs, as well as various wearable devices.
- an additional base material layer is sometimes included in the window layer on one or both sides of the thin glass so that it is transparent and has mechanical properties such as durability such as hardness, bending characteristics, and anti-fouling characteristics.
- Republic of Korea Patent Publication No. 10-2021-0150626 provides a window with improved impact resistance while maintaining foldable characteristics by including a single or multiple shock absorbing layers and coating layers on a glass substrate.
- the process is simplified by forming a base layer for durability directly on the glass, and the adhesion is excellent. It is transparent and has excellent mechanical properties such as bending properties and anti-fouling properties, making it a durable hard coating film and window suitable for implementing flexible properties. and development of image display devices are needed.
- the purpose of the present invention is to provide a hard coating composition of excellent quality in order to solve the above-mentioned problems, and to provide a hard coating film formed from the hard coating composition.
- windows and image display devices have excellent transmittance, scratch resistance, surface pencil hardness, stain resistance, abrasion resistance, chemical resistance, adhesion, high temperature and high humidity adhesion, bending resistance, and Vickers hardness of the hard coating layer.
- the purpose is to provide.
- the present invention relates to a hard coating composition containing an acrylic silane compound and a fluorine-based UV curable functional group-containing compound, and containing more than 10% by weight of the acrylic silane compound based on the total weight of the composition.
- the present invention is characterized in that the hard coating layer formed from the hard coating composition has a Vickers hardness of 25 kgf/mm 2 or more.
- the fluorine-based UV-curable functional group-containing compound may have 1 to 6 UV-curable functional groups.
- the present invention may further include at least one selected from the group consisting of a photopolymerizable compound, an initiator, and a solvent.
- the photopolymerizable compound may include urethane (meth)acrylate having 6 or more functional groups.
- the urethane (meth)acrylate having more than 6 functions may be included in more than 10 parts by weight based on a total of 100 parts by weight of the photopolymerizable compound.
- the photopolymerizable compound may further include an inorganic nano-filler.
- the present invention may further include additives.
- the additive may include one or more selected from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer.
- the present invention is intended to be formed on display glass and relates to a hard coating film formed from the hard coating composition.
- the display glass may be UTG (Ultra Thin Glass).
- the present invention may be characterized in that the display glass and the hard coating layer are formed in direct contact without including a separate layer.
- the present invention may be applied to flexible displays.
- the present invention glass for display; And it may relate to a window including the hard coating film formed on the display glass.
- the present invention may relate to an image display device including the window.
- the hard coating composition according to the present invention, the hard coating film, window, and image display device to which the same is applied have transmittance, scratch resistance, pencil hardness, antifouling property, abrasion resistance, chemical resistance, adhesion, high temperature and high humidity adhesion and bending resistance, and Vickers of the hard coating layer.
- the hard coating film according to the present invention does not include a separate layer between the glass and the hard coating film, but is formed by direct contact, so the process for bonding each base layer can be omitted, simplifying the production process compared to the prior art. It can be.
- Figure 1 shows the laminated structure of a display glass laminate on which a hard coating film is laminated according to an embodiment of the present invention.
- the present invention is a hard coating composition that includes an acrylic silane compound and a fluorine-based UV curable functional group-containing compound, and contains more than 10% by weight of the acrylic silane compound based on the total weight of the composition, making it suitable for use in flexible displays. It relates to a hard coating composition for film production, a hard coating film including a hard coating layer manufactured therefrom, a glass laminate for a display in which the hard coating film is laminated, and a window and an image display device using the same.
- Figure 1 shows the structure of a laminate including a hard coating film manufactured with a hard coating composition according to an embodiment of the present invention
- the display glass laminate 100 of the present invention is as shown in Figure 1.
- it may have a structure including display glass 110 and a hard coating film 120 formed on the display glass 110.
- the hard coating composition according to an embodiment of the present invention includes an acrylic silane compound and a fluorine-based UV curable functional group-containing compound, and is characterized in that it contains more than 10% by weight of the acrylic silane compound based on the total weight of the composition. .
- the hard coating composition according to an embodiment of the present invention may further include a photopolymerizable compound, a solvent, and/or an initiator, and, if necessary, additives from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer.
- a photopolymerizable compound e.g., a photopolymerizable compound, a solvent, and/or an initiator, and, if necessary, additives from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer.
- a leveling agent e.g., an ultraviolet stabilizer, and a heat stabilizer.
- the hard coating composition of the present invention is applied to glass, preferably ultra-thin glass, and has excellent adhesion to display glass, transmittance, scratch resistance, pencil hardness, stain resistance, abrasion resistance, chemical resistance, adhesion, high temperature and high humidity adhesion, It may be a hard coating composition that can improve mechanical properties such as bending resistance and/or Vickers hardness of the hard coating layer.
- the acrylic silane compound refers to a compound containing a monomer and a (meth)acrylic group in which four chemical groups are connected to a silicon (Si) element in the structure.
- the silane group of acrylic silane forms a chemical bond with the glass of the window laminate, and the acrylic group forms a cross-link with the UV-curable hard coat composition, thereby providing excellent durability at high temperatures and high humidity.
- the acrylic silane compound of the present invention may have the structure of Formula 1 below.
- R 1 may include any substituent having a double bond without limitation, and may be, for example, an alkenyl group having 1 to 5 carbon atoms or oxygen.
- R 2 may each independently be an alkyl group having 1 to 5 carbon atoms.
- R 3 may be hydrogen or a methyl group. It is more preferable that c is an integer of 4 to 14 to achieve the effect of the present invention.
- the acrylic silane compound may be included in more than 10% by weight based on the total weight of the hard coating composition, and preferably may be included in more than 11% by weight and less than 30% by weight.
- the acrylic silane compound when included in an amount of 10% by weight or less based on the total weight of the hard coating composition, the reactivity of the glass of the window laminate and the acrylic silane compound is reduced, leading to a problem in high temperature and high humidity durability.
- the hard coating layer formed from the hard coating composition has good adhesion between substrates and provides flexibility to the film substrate layer, which can have the effect of preventing breakage during repeated folding, There is an advantage in that bending resistance characteristics can be imparted.
- the fluorine-based UV-curable functional group-containing compound is an ingredient that imparts antifouling properties and wear resistance, and must contain fluorine and is not particularly limited as long as it has a UV-curable functional group.
- the fluorine-based UV-curable functional group-containing compound preferably has 1 to 6 UV-curable functional groups.
- the scope of the present invention is not limited to these, and any material that has a UV-curable functional group and contains a fluorine group can be applied. do.
- the fluorine-based UV curable functional group-containing compound preferably contains 0.01 to 30% by weight, more preferably 0.5 to 10% by weight, based on the total weight of the hard coating composition. . If it is less than 0.01% by weight, it is difficult to sufficiently achieve wear resistance and anti-fouling properties, and if it exceeds 30% by weight, film hardness and wear resistance may actually decrease.
- the photopolymerizable compound used to form the hard coating layer of the present invention contains a photopolymerizable functional group and may be a photopolymerizable monomer, a photopolymerizable oligomer, etc., and may be, for example, a radically photopolymerizable compound.
- Photopolymerizable monomers are commonly used photocurable functional groups, for example, monomers used in the art having unsaturated groups such as (meth)acryloyl group, vinyl group, styryl group, and allyl group in the molecule can be used without limitation. More specifically, examples include monofunctional and/or polyfunctional (meth)acrylates. These can be used individually or in combination of two or more types.
- (meth)acryl- refers to “methacryl-”, “acryl-”, or both.
- (meth)acrylate monomers include (meth)acrylic acid esters, such as trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, glycerol tri(meth)acrylate, and tris(2-hyde).
- Monomers having a trifunctional or less (meth)acryloyl group such as acrylate, dipentaerythritol hexa(meth)acrylate, dipentaerythritol hydroxypenta(meth)acrylate, pentaerythritol tetra(meth)acrylate, Ditrimethylolpropane tetra(meth)acrylate, etc. can be mentioned. These can be used individually or in combination of two or more types.
- the photopolymerizable oligomer may be, for example, one or more selected from the group consisting of epoxy (meth)acrylate, urethane (meth)acrylate, and polyester (meth)acrylate, specifically urethane (meth)acrylate. It can be used by mixing polyester (meth)acrylate, or by mixing two types of polyester (meth)acrylate. It is preferable to include urethane (meth)acrylate oligomer in order to improve the scratch resistance and hardness of the cured product and increase the elastic modulus of the hard coating layer.
- the urethane (meth)acrylate can be produced by reacting a polyfunctional (meth)acrylate having a hydroxy group in the molecule and a compound having an isocyanate group in the presence of a catalyst according to a method known in the art.
- polyfunctional (meth)acrylate having a hydroxy group in the molecule examples include 2-hydroxyethyl (meth)acrylate, 2-hydroxyisopropyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate. , caprolactone ring-opened hydroxyacrylate, pentaerythritol tri/tetra (meth)acrylate mixture, and dipentaerythritol penta/hexa (meth)acrylate mixture.
- compounds having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane, and 1,5-diisocyanatododecane.
- the urethane (meth)acrylate oligomer may be a compound containing two or more substituents and (meth)acrylic groups each represented by the following formula (2) in the molecule.
- the urethane (meth)acrylate oligomer may be produced by reacting preferably 1 mol of diisocyanate represented by the following formula (3) with preferably 2 mol of an active hydrogen-containing polymerizable unsaturated compound.
- R 4 and R 5 are each independently a substituent containing a (meth)acryloyl group derived from an active hydrogen-containing polymerizable unsaturated compound, and R 6 is a divalent substituent derived from diisocyanate.
- urethane (meth)acrylate oligomers include reaction of 2-hydroxyethyl (meth)acrylate and 2,4-tolylene diisocyanate, 2-hydroxyethyl (meth)acrylate and isophorone diisocyanate.
- Polyester (meth)acrylate can be produced by reacting polyester polyol and acrylic acid according to methods known in the art.
- Polyester (meth)acrylates include, for example, polyester acrylate, polyester diacrylate, polyester tetraacrylate, polyester hexaacrylate, polyester pentaerythritol triacrylate, polyester pentaerythritol tetraacrylate. , and polyester pentaerythritol hexaacrylate, but is not limited to this.
- polyfunctional urethane (meth)acrylate of 6 or more functional groups can be used to increase the degree of cross-linking by having urethane groups capable of hydrogen bonding; and/or 14-functional polyester (meth)acrylate.
- the 14-functional polyester (meth)acrylate is a multifunctional compound, due to its unique structure, it has the property of lowering hardness when included in the composition.
- the above six-function or more Multifunctional urethane (meth)acrylate may be included in an amount exceeding 10 parts by weight based on a total of 100 parts by weight of the photopolymerizable compound, and containing more than 10 parts by weight but less than 85 parts by weight can increase the hardness of the hard coating film. From this point of view, it is more desirable.
- the content ratio of the photopolymerizable monomer and the photopolymerizable oligomer is not particularly limited and may be appropriately selected considering the storage modulus, shrinkage force, and workability of the hard coating layer.
- the content ratio of the polymerizable oligomer to the polymerizable monomer is not particularly limited. It may be included in a ratio of (1:10) to (10:1). If the content ratio of the polymerizable oligomer to the polymerizable monomer is outside the above range, the storage modulus of the hard coating layer may decrease or the shrinkage force may increase, resulting in lower hardness and flexibility, which may cause curling.
- the content of the photopolymerizable compound is not particularly limited, but may be, for example, 1 to 80% by weight, preferably 5 to 50% by weight, based on the total weight of the hard coating composition. If the polymerizable compound is less than 1% by weight, the elastic modulus of the hard coating layer is reduced, so cracks may easily occur in the hard coating layer when bending, and if it exceeds 80% by weight, the viscosity increases, the applicability decreases, and surface leveling occurs. If it is insufficient, problems may arise with the exterior characteristics.
- the photopolymerizable compound can be used together with an inorganic nano-filler to improve hardness and scratch resistance.
- the inorganic nano-filler may generally be less than 100 nm, preferably 10 to 100 nm, and more preferably 10 to 50 nm.
- Representative inorganic nano fillers include, for example, silica, aluminum oxide particles, titanium oxide particles, and/or zinc oxide particles, and silica is preferably used.
- Silica may or may not have a photocurable group on its surface that can participate in a photoreaction.
- the inorganic nano filler can be added by appropriately adjusting the content within a range that does not impair the effect of the present invention.
- the solvent is capable of dissolving or dispersing the above-mentioned composition and can be used without limitation as long as it is known as a solvent for the composition for forming a coating layer in the art.
- Solvents that can be used are alcohol-based (methanol, ethanol, isopropanol, butanol, methylcellusorb, ethylsolusorb, etc.), ketone-based (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl ketone, dipropyl ketone, Cyclohexanone, etc.), acetates (ethyl acetate, propyl acetate, n-butyl acetate, tertiary-butyl acetate, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, Propylene glycol monopropyl ether acetate, methoxybutyl acetate, methoxypentyl acetate, etc.), hexane type (hexan
- the solvent is used in an amount of 10 to 95% by weight based on the total weight of the hard coating composition. If the content of the solvent is less than the above content, the viscosity is high, which not only reduces workability, but also makes it impossible to sufficiently progress the swelling of the base film. Conversely, if it exceeds the above range, the drying process takes a lot of time and is not economically feasible. Since there is a problem of dropping, use appropriately within the above range.
- the initiator can be used without limitation as long as it is used in the art.
- one or more types selected from the group consisting of hydroxyketones, aminoketones, hydrogen recovery type photoinitiators, and combinations thereof may be used.
- the photoinitiator includes 2-methyl-1-[4-(methylthio)phenyl]2-morpholinepropanone-1, diphenyl ketone, benzyldimethyl ketal, 2-hydroxy-2-methyl-1- Phenyl-1-one, 4-hydroxycyclophenylketone, 2,2-dimethoxy-2-phenyl-acetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-c.
- the hard coating composition used to form the hard coating layer according to the present invention may further include additives such as a leveling agent, ultraviolet stabilizer, and/or heat stabilizer.
- the leveling agent is an ingredient that provides smoothness and coating properties to the coating film.
- the leveling agent can be any leveling agent commonly used in the industry, and examples include silicone-based leveling agents, fluorine-based leveling agents, and acrylic polymer-based leveling agents. These can be used alone or in combination of two or more, but are not necessarily limited to these.
- the leveling agent may be included in an amount of 0.1 to 1% by weight based on the total weight of the hard coating composition, but is not limited thereto.
- UV stabilizers are ingredients that block or absorb ultraviolet rays and prevent decomposition, discoloration, and crumbling of the hardened hard coating layer due to exposure to ultraviolet rays.
- the UV stabilizers include absorbers, quenchers, hindered amine light stabilizers (HALS), etc., which are classified according to their mechanism of action; Or, classified according to chemical structure: Phenyl Salicylates (absorbent), Benzophenone (absorbent), Benzotriazole (absorbent), Nickel Derivative (quencher), Radical Scavenger ; etc. can be used. These can be used alone or in combination of two or more types, and the type is not particularly limited as long as it is a UV stabilizer that does not significantly change the initial color of the hard coating layer.
- Heat stabilizers are commercially applicable products, for example, polyphenol-based primary heat stabilizers, phosphate-based and lactone-based secondary heat stabilizers can be used individually or in combination. These can be used alone or in combination of two or more types.
- the ultraviolet stabilizer and heat stabilizer can be used by appropriately adjusting the content at a level that does not affect ultraviolet curing properties, and specifically, it is preferably contained in 0.0 to 3% by weight based on the total weight of the hard coating composition of the present invention.
- the additives can be added by appropriately adjusting the content within a range that does not impair the effect of the present invention.
- the hard coating layer may be manufactured through a method known in the art.
- the thickness of the hard coating layer is not particularly limited and may be, for example, 5 to 100 ⁇ m. When the thickness is within the above range, superior hardness can be exhibited.
- the hard coating film according to an embodiment of the present invention may include a hard coating film 120 formed by applying a hard coating composition on display glass 110 and going through a drying and UV curing step.
- the step of drying the hard coating film may be performed by a heating means such as a hot plate, hot air circulation furnace, or infrared furnace, and may be performed at a temperature of 50 to 150 ° C. or 50 to 100 ° C.
- a heating means such as a hot plate, hot air circulation furnace, or infrared furnace, and may be performed at a temperature of 50 to 150 ° C. or 50 to 100 ° C.
- actinic rays such as UV light of 50 to 1000 mJ/cm 2 , preferably 200 to 800 mJ/cm 2 are irradiated.
- Light sources used for irradiation include low-pressure mercury lamps, high-pressure mercury lamps, ultra-high pressure mercury lamps, metal halide lamps, and argon gas lasers. In some cases, X-rays and electron beams can also be used.
- the hard coating film 120 of the present invention is not particularly limited as long as it is manufactured from the hard coating composition described above.
- the hard coating film 120 includes an acrylic silane compound; and a fluorine-based UV-curable functional group-containing compound, and a hard coating composition, and is characterized in that it contains more than 10% by weight of the acrylic silane compound based on the total weight of the composition.
- the hard coating film 120 is formed on the display glass 110 and may be formed on the outermost layer of the laminate 100.
- the hard coating film 120 is formed directly on the glass without a separate base layer such as an adhesive layer to ensure adhesion between the base materials, and is exposed to the surface to provide the function of protecting the film such as impact resistance and anti-fouling properties. .
- the display glass laminate 100 of the present invention is not particularly limited as long as it includes the hard coating film described above, but as shown in FIG. 1, the display glass 110 and the display glass 110 are formed on the display glass 110. It may be a structure including a formed hard coating film 120.
- the display glass 110 is used to support the hard coating film 120 and other substrates or panels by replacing the existing glass substrate, and can be made of either thin glass or curved glass for the display of electronic devices. there is.
- the thin glass may include flat glass and flexible glass.
- the display glass 110 may be made of UTG (ultra thin glass).
- UTG ultra thin glass
- UTG is a component made of ultra-thin tempered glass used in display cover windows. It has high transparency and an ultra-thin thickness of about 10 to 100 ⁇ m, allowing for flexible folding.
- “transparent” means that the transmittance of visible light is 70% or more or 80% or more.
- the display glass 110 may include an additional base layer, such as a hard coating film 120, which will be described later, to ensure durability.
- an adhesive layer or an adhesive layer is included to form or bond the base layer, but according to the hard coating film according to the present invention, it does not include a separate base layer for bonding the hard coat layer, but is formed by direct contact with the display.
- Embodiments of the present invention provide a window and an image display device including the above-described hard coating film 120 or a laminate 100 including the same.
- the window or window laminate containing the above-described hard coating film or a laminate containing the same.
- at least one of a polarizing layer or a touch sensor layer may be laminated on one side of the window on which the hard coating film is formed.
- This window or window laminate can be applied as a window film formed on the outermost surface of an image display device.
- the hard coating film may be inserted into, for example, an image display device.
- the image display device includes various image display devices such as a liquid crystal display device, an electroluminescence display device, a plasma display device, and a field emission display device, and may be a flexible display device having flexibility and bending characteristics.
- the hard coating laminate according to embodiments of the present invention can be more effectively applied as a window or window laminate of the flexible display device.
- the flexibility and durability of the window are improved, and antistatic performance can be implemented. Accordingly, for example, the impact resistance and wear resistance of the flexible display device can be improved, and damage such as cracks and peeling can be prevented even when bending.
- a hard coating film was prepared by laminating the hard coating compositions of Preparation Examples 1 to 7 on display glass in the structure shown in Table 1 below. Specifically, in order to form a hard coating layer on 50 ⁇ m thin glass, the composition of the manufacturing example suitable for each Example and Comparative Example was applied to form a hard coating layer. The composition of each production example was applied to the hard coating layer composition using a No. 12 bar coater, and then the solvent was dried at 90°C for 2 minutes. The dried film was purged with nitrogen and irradiated with UV light at a dose of 600 mJ/cm 2 under nitrogen conditions to form a 7 ⁇ m hard coating layer, thereby preparing the final laminated hard coating film.
- MEK methyl ethyl ketone
- the transmittance of the coating film was measured using a Murakami haze meter HM-150N.
- the base film was bonded to the glass using a transparent adhesive so that the hard coating side was at the top, and scratch resistance was measured by reciprocating friction 10 times with a load of 500 g/cm 2 using steel wool (#0000).
- ⁇ When the measurement part is transmitted and reflected by a three-wavelength lamp and observed, no scratches are visible, or 10 or fewer scratches are visible.
- the base film was fixed to the glass with the hard coating side facing upward, and the pencil hardness was measured under a 1kg load.
- the test was conducted 5 times with a pencil of the same hardness at a length of 1 cm, and the hardness that was OK more than 4 times was designated as pencil hardness.
- the contact angle of water was measured using a contact angle meter DSA100 from KRUSS.
- the liquid drop volume at room temperature was 3 ⁇ l.
- the case where the contact angle of water was 110° or more was selected as the contact angle acceptance criterion.
- the base film was bonded to the glass using a transparent adhesive so that the hard coating side was on the top, and then scratches were made on the hard coating side with a cutter knife in the form of 100 squares horizontally and vertically at 1 mm intervals. Afterwards, an adhesion test was conducted three times using Nichibang tape.
- a folding test was performed on the prepared hard coating film by allowing the hard coating layers to come into contact with each other and repeating the folding process 200,000 times so that the radius of curvature of the folded portion was 5 mm.
- the sample was placed so that the hard coating film was on top, and the Vickers hardness of the hard coating layer was measured with a microload of 5 mN using a nanoindenter (Fisher).
- Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative example 2 Comparative Example 3 Laminated structure and evaluation items Manufacturing example 1 Manufacturing example 2 Manufacturing example 3 Manufacturing example 4 Manufacturing example 5 Manufacturing example 6 Manufacturing example 7 glass glass glass glass glass glass 1) Transmittance (%) 91.7 91.9 91.7 91.9 91.5 91.5 91.7 2) Scratch resistance ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 3) Pencil hardness 3H 3H 3H 3H 3H 3H 3H 3H 3H 3H 3H 4) Antifouling ( ⁇ ) 111 111 110 112 111 110 111 5) Wear resistance ( ⁇ ) 103 102 100 102 106 104 105 6) Chemical resistance ( ⁇ ) 101 99 98 101 101 100 102 7) Adhesion ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 8) High temperature and high humidity adhesion ⁇ ⁇ ⁇ ⁇ X X 9) Flexibility ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 10) Hard coating layer Vickers hardness [
- the hard coating composition according to the present invention and the hard coating film, window, and image display device to which the same is applied have excellent physical properties, especially in terms of durability, even under high temperature and high humidity conditions.
- the hard coating composition according to the present invention, the hard coating film, window, and image display device to which the same is applied have transmittance, scratch resistance, pencil hardness, antifouling property, abrasion resistance, chemical resistance, adhesion, high temperature and high humidity adhesion and bending resistance, and Vickers of the hard coating layer.
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Abstract
Description
| 실시예1 | 실시예2 | 실시예3 | 실시예4 | 비교예1 | 비교예2 | 비교예3 | |
| (단위: 중량%) | 제조예1 | 제조예2 | 제조예3 | 제조예4 | 제조예5 | 제조예6 | 제조예7 |
| 14관능 폴리에스테르 아크릴레이트 | 23.1 | 23.1 | 9.9 | 9.9 | 31.5 | 31.5 | 13.5 |
| 6관능 우레탄 아크릴레이트 | 9.9 | 9.9 | 23.1 | 23.1 | 13.5 | 13.5 | 31.5 |
| 개시제 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 용제 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| 불소계 UV경화형 관능기 함유 화학물 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 아크릴계 실란 화합물 1 | 15 | 15 | 3 | 3 | |||
| 아크릴계 실란 화합물 2 | 15 | 15 | 3 | ||||
| 총 합 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| 고형분 | 49.2 | 49.2 | 49.2 | 49.2 | 49.2 | 49.2 | 49.2 |
| 실시예1 | 실시예2 | 실시예3 | 실시예4 | 비교예1 | 비교예2 | 비교예3 | |
| 적층구조 및 평가 항목 | 제조예1 | 제조예2 | 제조예3 | 제조예4 | 제조예5 | 제조예6 | 제조예7 |
| 글라스 | 글라스 | 글라스 | 글라스 | 글라스 | 글라스 | 글라스 | |
| 1) 투과율(%) | 91.7 | 91.9 | 91.7 | 91.9 | 91.5 | 91.5 | 91.7 |
| 2) 내스크래치성 | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| 3) 연필경도 | 3H | 3H | 3H | 3H | 3H | 3H | 3H |
| 4) 방오성(˚) | 111 | 111 | 110 | 112 | 111 | 110 | 111 |
| 5) 내마모성(˚) | 103 | 102 | 100 | 102 | 106 | 104 | 105 |
| 6) 내약품성(˚) | 101 | 99 | 98 | 101 | 101 | 100 | 102 |
| 7) 밀착성 | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| 8) 고온고습 밀착성 | ○ | ○ | ○ | ○ | X | X | X |
| 9) 내굴곡성 | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| 10) 하드코팅층 비커스 경도[kgf/mm2] | 25.4 | 25.4 | 32.9 | 32.9 | 27.7 | 27.7 | 36.5 |
Claims (15)
- 아크릴계 실란 화합물 및 불소계 UV 경화형 관능기 함유 화합물을 포함하는 하드코팅 조성물로,조성물 전체 총 중량에 대하여, 상기 아크릴계 실란 화합물을 10 중량%를 초과하여 포함하는, 하드코팅 조성물.
- 상기 하드코팅 조성물로 형성된 하드코팅층의 비커스 경도가 25 kgf/mm2 이상인 것을 특징으로 하는, 하드코팅 조성물.
- 청구항 1에 있어서,상기 불소계 UV 경화형 관능기 함유 화합물은, UV 경화형 관능기를 1 내지 6개 가지는, 하드코팅 조성물.
- 청구항 1에 있어서,광중합성 화합물, 개시제 및 용제로 이루어진 군에서 선택되는 1종 이상을 더 포함하는, 하드코팅 조성물.
- 청구항 4에 있어서,상기 광중합성 화합물은, 6관능 이상의 우레탄(메타)아크릴레이트를 포함하는 것을 특징으로 하는, 하드코팅 조성물.
- 청구항 5에 있어서,상기 6관능 이상의 우레탄(메타)아크릴레이트는, 광중합성 화합물 총 100 중량부에 대하여 10 중량부를 초과하여 포함하는, 하드코팅 조성물.
- 청구항 4에 있어서,상기 광중합성 화합물은, 무기 나노 필러를 더 포함하는, 하드코팅 조성물.
- 청구항 1에 있어서,첨가제를 더 포함하는, 하드코팅 조성물.
- 청구항 8에 있어서,상기 첨가제는 레벨링제, 자외선 안정제 및 열 안정제로 이루어진 군에서 선택되는 1종 이상을 포함하는, 하드코팅 조성물.
- 디스플레이용 글라스 상에 형성되기 위한 것으로,청구항 1 내지 9 중 어느 한 항에 따른 하드코팅 조성물로 형성된, 하드코팅 필름.
- 청구항 10에 있어서,상기 디스플레이용 글라스는, UTG(Ultra Thin Glass)인 것을 특징으로 하는, 하드코팅 필름.
- 청구항 10에 있어서,상기 디스플레이용 글라스 및 상기 하드코팅층은 별도의 층을 포함하지 않고 직접 접촉하여 형성되는 것을 특징으로 하는, 하드코팅 필름.
- 청구항 10에 있어서,플렉서블 디스플레이에 적용되는 것인, 하드코팅 필름.
- 디스플레이용 글라스; 및상기 디스플레이용 글라스 상에 형성된 하드코팅 필름을 포함하는 윈도우로,상기 하드코팅 필름은 청구항 10에 따른 하드코팅 필름인, 윈도우.
- 청구항 14에 따른 윈도우를 포함하는, 화상 표시 장치.
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|---|---|---|---|---|
| KR20110025634A (ko) * | 2009-09-04 | 2011-03-10 | 강문식 | 하드 코팅 조성물 및 이의 제조 방법 및 상기 하드 코팅 조성물을 이용하여 형성된 하드 코팅 필름 |
| KR20150082124A (ko) * | 2014-01-07 | 2015-07-15 | 주식회사 엘지화학 | 다층 필름 |
| KR20180025866A (ko) * | 2015-06-24 | 2018-03-09 | 삼성전자주식회사 | 표시 장치용 하드코팅 필름 및 이를 포함하는 표시 장치 |
| KR20180065288A (ko) * | 2016-12-07 | 2018-06-18 | 솔브레인 주식회사 | 하드코팅 필름 형성용 조성물 및 이를 이용하여 제조된 하드코팅 필름 |
| KR102321084B1 (ko) * | 2020-09-14 | 2021-11-03 | 동우 화인켐 주식회사 | 하드코팅 필름 및 이를 구비한 화상표시장치 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102774715B1 (ko) | 2020-06-03 | 2025-03-05 | 삼성디스플레이 주식회사 | 윈도우 및 이를 포함하는 표시 장치 |
-
2023
- 2023-06-14 KR KR1020230076004A patent/KR20240003424A/ko active Pending
- 2023-06-22 WO PCT/KR2023/008706 patent/WO2024005452A1/ko not_active Ceased
- 2023-06-22 CN CN202380050907.6A patent/CN119487131A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110025634A (ko) * | 2009-09-04 | 2011-03-10 | 강문식 | 하드 코팅 조성물 및 이의 제조 방법 및 상기 하드 코팅 조성물을 이용하여 형성된 하드 코팅 필름 |
| KR20150082124A (ko) * | 2014-01-07 | 2015-07-15 | 주식회사 엘지화학 | 다층 필름 |
| KR20180025866A (ko) * | 2015-06-24 | 2018-03-09 | 삼성전자주식회사 | 표시 장치용 하드코팅 필름 및 이를 포함하는 표시 장치 |
| KR20180065288A (ko) * | 2016-12-07 | 2018-06-18 | 솔브레인 주식회사 | 하드코팅 필름 형성용 조성물 및 이를 이용하여 제조된 하드코팅 필름 |
| KR102321084B1 (ko) * | 2020-09-14 | 2021-11-03 | 동우 화인켐 주식회사 | 하드코팅 필름 및 이를 구비한 화상표시장치 |
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| KR20240003424A (ko) | 2024-01-09 |
| CN119487131A (zh) | 2025-02-18 |
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