WO2020116980A1 - Composition de résine destinée à un revêtement antireflet et film de revêtement antireflet ainsi préparé - Google Patents

Composition de résine destinée à un revêtement antireflet et film de revêtement antireflet ainsi préparé Download PDF

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WO2020116980A1
WO2020116980A1 PCT/KR2019/017160 KR2019017160W WO2020116980A1 WO 2020116980 A1 WO2020116980 A1 WO 2020116980A1 KR 2019017160 W KR2019017160 W KR 2019017160W WO 2020116980 A1 WO2020116980 A1 WO 2020116980A1
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Prior art keywords
glare
glare coating
coating layer
film
particles
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PCT/KR2019/017160
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English (en)
Korean (ko)
Inventor
안상현
이동희
양필례
백성훈
서원규
김항근
Original Assignee
코오롱인더스트리 주식회사
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Priority claimed from KR1020190160469A external-priority patent/KR20200070117A/ko
Application filed by 코오롱인더스트리 주식회사 filed Critical 코오롱인더스트리 주식회사
Priority to EP19893597.5A priority Critical patent/EP3892695A4/fr
Priority to US17/267,748 priority patent/US20210317321A1/en
Priority to JP2021524193A priority patent/JP2022506660A/ja
Priority to CN201980080706.4A priority patent/CN113166586A/zh
Publication of WO2020116980A1 publication Critical patent/WO2020116980A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • 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
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • 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

Definitions

  • the present invention relates to a resin composition for anti-glare coating and an anti-glare coating film prepared by including the same.
  • the anti-glare coating film is defined as a film having a function of reducing the reflection of external light by using diffuse reflection due to surface irregularities, and is applied to the surface of various display panels to prevent the display visibility from being deteriorated by external reflected light and by the reflected light It is used for the purpose of reducing eye fatigue. In addition, it is possible to prevent glare by dispersing the light generated therein. Generally, a method of scattering light is applied by coating a composition containing particles, but the degree of scattering is weak, so a method of using scattering of light through surface irregularities is used. Mainly applied.
  • Anti-reflection (AR) films are also applied to reduce the reflectance of incident light through offset interference in the interfacial reflection process by alternately stacking low-refractive materials and high-refractive materials for the same purpose, but simplifying the process and reducing costs, etc. For this reason, AG films are preferred.
  • Patent Publication No. 2017-0082922 realizes high resolution through high image clarity, exhibits anti-glare properties by forming surface irregularities, and a resin composition for preventing glare and high anti-glare film using the same is also described in thin films have.
  • the size of the agglomerates is 2 to 100 ⁇ m, and the size of the agglomerates is large, there is a very high possibility of sparkling on the display.
  • Patent Registration No. 10-0378340 has been described for an anti-glare coating layer characterized in that it comprises each light-transmitting particle having a different refractive index, but it has a disadvantage of poor scratch resistance due to organic particles.
  • the anti-glare coating layer is characterized in that the inside haze value is 1 to 15 by including a light-transmitting diffuser inside the binder resin, but there is no room for the visibility to be weakened by high internal haze. have.
  • the present invention provides a resin composition for an anti-glare coating containing organic or inorganic particles and an anti-glare coating film prepared by including a siloxane resin containing an epoxy group and an acrylic group, hardness, scratch resistance and processability At the same time, it is possible to impart anti-glare properties by introducing particles.
  • Another object of the present invention is to realize the hardness, abrasion resistance, anti-glare property of the film resin and the film produced therefrom using the resin composition.
  • a preferred embodiment of the present invention for solving the above problems is described; A high hardness coating layer on the substrate; And an anti-glare coating layer on the high-hardness coating layer, wherein the high-hardness coating layer is formed by a first composition comprising a first siloxane resin, and the anti-glare coating layer is formed by a second composition comprising a second siloxane resin and particles.
  • the first siloxane resin and the second siloxane resin are formed, respectively, to provide an anti-glare coating film formed by polymerization of one or more alkoxy silanes of the alkoxy silane represented by the following formula (1) and the alkoxy silane represented by the following formula (2) will be.
  • R 1 is a C1 to C3 linear, branched or alicyclic alkylene group substituted with epoxy or acrylic
  • R 2 is a C1 to C8 linear, branched or alicyclic alkyl group
  • n is 1 to 3 Is an integer.
  • R 3 is a C1 to C4 linear or branched alkyl group.
  • the particles may have an average particle diameter of 0.01 ⁇ m to 5 ⁇ m.
  • Ra surface roughness of the anti-glare coating layer
  • the high hardness coating layer may have a thickness of 10 to 50 ⁇ m.
  • the anti-glare coating layer may have a thickness of 1 to 3 ⁇ m.
  • the particles may be organic particles or inorganic particles.
  • the inorganic particles may include at least one of silica particles and silicon particles.
  • the organic particles may include at least one of styrene beads, acrylic beads, and cross-linked acrylic beads.
  • the particles may be included in an amount of 1 to 5% by weight compared to the solid content of the resin composition for the anti-glare coating layer.
  • the substrate may include at least one of a polyimide film, a polyethylene naphthalate film, a triacetyl cellulose film, a cyclo olefin polymer film, a cyclo olefin copolymer film, and an acrylic film.
  • the anti-glare coating film may have a Gloss unit of 40 to 100.
  • the anti-glare coating film may have a transmittance of 90 or more.
  • the anti-glare coating film may have a haze of 30 or less.
  • the resin composition for anti-glare coatings according to the present invention and the anti-glare coating film manufactured by including the same can secure excellent hardness, scratch resistance and processability, and at the same time, can implement excellent anti-glare properties by introducing particles.
  • FIG. 1 is a schematic cross-sectional view of an anti-glare coating film according to an embodiment of the present invention.
  • FIG 2 is a cross-sectional view of the anti-glare coating film specifically expressing the particles and the matrix of the anti-glare coating layer.
  • FIG 3 is a schematic cross-sectional view of the anti-glare coating film of a comparative example in which a high hardness coating layer is excluded.
  • the resin composition for a high hardness coating layer comprises a first siloxane resin
  • the resin composition for an anti-glare coating layer is a second It comprises a siloxane resin and particles
  • the first siloxane resin and the second siloxane are each formed by polymerization of one or more alkoxy silanes of the alkoxy silane represented by Formula 1 and the alkoxy silane represented by Formula 2 below.
  • R 1 is a C1 to C3 linear, branched or alicyclic alkylene group substituted with epoxy or acrylic
  • R 2 is a C1 to C8 linear, branched or alicyclic alkyl group
  • n is 1 to 3 Is an integer.
  • R 3 is a C1 to C4 linear or branched alkyl group.
  • the resin composition for a high hardness coating layer can be used for preparing a high hardness coating layer, and the resin composition for a high hardness coating layer is called a first composition.
  • the resin composition for an anti-glare coating layer can be used for the production of an anti-glare coating layer, and the resin composition for an anti-glare coating layer is called a second composition.
  • the first composition and the second composition are each independent, and the content of other components except for the content of the particles may be the same or different.
  • the second composition is described as adding only particles to the first composition, but the present invention is not limited thereto.
  • each of the first siloxane resin and the second siloxane resin is independent, and may be the same siloxane resin as each other, or different siloxane resins are possible.
  • the following description describes the first and second siloxane resins as one siloxane resin for convenience of description, but the present invention is not limited thereto.
  • the present invention is preferably a resin composition for a high hardness coating layer comprising a siloxane resin chemically bonded from a compound comprising an alkoxy silane containing an epoxy group or an acrylic group and a trialkoxysilane having a silane T structure.
  • the resin composition for a high hardness coating layer increases the hardness and abrasion resistance of a film or sheet containing a cured product prepared therefrom by including a siloxane resin in which an alkoxy silane containing an epoxy group or an acrylic group is reacted with water.
  • the resin composition for the high hardness coating layer of the present invention has high surface hardness and scratch resistance due to silane
  • the film or sheet containing the high hardness coating cured product according to the present invention is an alkoxy silane containing epoxy or acrylic and water It is produced by a photocuring reaction of a siloxane produced by overreaction.
  • the alkoxy silane containing the epoxy group or the acrylic group may be represented by Chemical Formula 1, more preferably 3-glycidoxypropyl trimethoxysilane, 3-glycidoxypropyl triethoxysilane , 3-glycidoxypropyl tripropoxysilane, 3-methacryloxypropyl trimethoxysilane, 3-methacryloxypropyl triethoxysilane, 3-acryloxypropyl trimethoxysilane, 3-acryloxypropyl tree Ethoxysilane, 3-acryloxypropyl tripropoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane and 2- It may be at least one selected from (3,4-epoxycyclohexyl) ethyl tripropoxysilane.
  • siloxane resin including the alkoxy silane represented by Chemical Formula 2
  • high surface hardness can be secured by dense siloxane crosslinking.
  • the synthesis of the siloxane resin may be performed at room temperature, but in order to promote the reaction, it may be performed while stirring at 50 to 120° C. for 1 hour to 120 hours.
  • acid catalysts such as hydrochloric acid, acetic acid, hydrogen fluoride, nitric acid and iodic acid sulfate, base catalysts such as ammonia, potassium hydroxide, sodium hydroxide, barium hydroxide, imidazole and ion exchange such as Amberite Resins may be used, and these catalysts may be used alone or in combination.
  • the amount of the catalyst may be added from 0.0001 to about 10 parts by weight based on 100 parts by weight of the siloxane resin, but is not particularly limited thereto.
  • water or alcohol is produced as a by-product, and by removing it, the reverse reaction can be reduced to accelerate the forward reaction, thereby controlling the reaction rate.
  • the by-product can be removed by applying heat under reduced pressure.
  • the siloxane resin of the present invention synthesized as described above has a TMS (Tetramethylsilane) of 0 ppm, 29 Si NMR measurement, and the integrated value of T3 range based on 80 is T1 range (-48 to -55 ppm).
  • the integral value of the range (-55 to -62 ppm) may have an integral value of 10 to 20 and the T3 range (-62 to -75 ppm) of 80.
  • the NMR value is a value obtained by measuring and integrating NMR by 29 Si NMR (JEOL FT-NMR). The polymer to be measured is measured by diluting it in CDCl 3 to a concentration of about 10%.
  • T1 structure present inside the siloxane resin polymer is included as 0 to 10% of the entire polymer structure, wherein the T1 structure is It refers to a structure in which the silicon (Si) atom, the central atom of the repeating unit of the polymer, is connected to the siloxane resin polymer chain at only one end.
  • the T1 structure means the terminal end of the polymer.
  • An integral value of 10 to 20 in the T2 range means that the T2 structure present in the siloxane resin polymer is included as 10 to 20% of the total polymer structure, and the T2 structure is a repeat of the polymer It refers to the structure in which the silicon (Si) atom, the central atom of the unit, is connected to the siloxane resin polymer chain at both ends.
  • An integral value of 80 in the T3 range means that the T3 structure present inside the siloxane resin polymer is included as 80% of the total structure of the polymer, and the T3 structure is the central atom of the repeating unit of the polymer. Refers to a structure in which a phosphorus silicon (Si) atom is connected to the siloxane resin polymer chain at three ends by a network structure.
  • the siloxane resin of the present invention is preferably a siloxane resin having a T3 structure in the largest amount by including a trialkoxysilane having a silane T structure.
  • the present invention may further include at least one additive selected from the group consisting of an organic solvent, a photoinitiator, a thermal initiator, an antioxidant, a leveling agent, and a coating aid in addition to the siloxane resin as a component of the first composition.
  • at least one additive selected from the group consisting of an organic solvent, a photoinitiator, a thermal initiator, an antioxidant, a leveling agent, and a coating aid in addition to the siloxane resin as a component of the first composition.
  • the type and content of the additive to be added it can be provided as a first composition suitable for various uses, and in the present invention, for coating, which can specifically increase the hardness, abrasion resistance, flexibility and curl prevention properties of a film or sheet It is preferably provided as a first composition.
  • a photopolymerization initiator such as an organometallic salt and a thermal polymerization initiator such as amine or imidazole may be used.
  • the amount of the initiator is preferably included in about 0.01 to 10 parts by weight based on 100 parts by weight of the total siloxane resin.
  • the curing time of the coating layer for obtaining sufficient hardness is increased to decrease efficiency, and when it exceeds 10 parts by weight, the yellowness of the coating layer is increased and it may be difficult to obtain a transparent coating layer.
  • examples of the organic solvent include ketones such as acetone, methyl ethyl ketone, methyl butyl ketone, and cyclohexanone; Cellosolves such as methyl cellosolve and butyl cellosolve, or ethers such as ethyl ether and dioxane; Alcohols such as isobutyl alcohol, isopropyl alcohol, butanol, and methanol; Halogenated hydrocarbons such as dichloromethane, chloroform and trichloroethylene; And it may include one or more selected from solvents consisting of hydrocarbons such as normal hexane, benzene, toluene, and the like, and the type is not particularly limited. Since the organic solvent controls the viscosity of the siloxane resin, the amount of addition can be appropriately controlled to make the processability easier or to control the thickness of the coating film.
  • ketones such as acetone, methyl ethyl ketone, methyl buty
  • the first composition may include an antioxidant to suppress the oxidation reaction resulting from the polymerization reaction, but may not be limited thereto.
  • the first composition may further include a leveling agent or a coating aid, but may not be limited thereto.
  • Polymerization of the siloxane resin may include a light irradiation or heating step, but may not be limited thereto.
  • the resin composition for the anti-glare coating layer comprises particles having an average particle size of 0.01 ⁇ m to 5 ⁇ m and a siloxane resin chemically bonded from a compound containing at least one alkoxy silane selected from alkoxy silanes represented by Formula 1 and Formula 2, respectively. It is preferred.
  • the resin composition for anti-glare coating according to the present invention includes a siloxane resin chemically bonded from the above-mentioned compound containing an alkoxy silane and particles having an average particle diameter of 0.01 ⁇ m to 5 ⁇ m to realize surface irregularities, thereby providing excellent anti-glare and high hardness. There is an advantage that can be obtained at the same time.
  • the particles have an average particle diameter of 0.01 ⁇ m to 5 ⁇ m, preferably 0.012 ⁇ m to 4 ⁇ m.
  • the average particle diameter is less than 0.01 ⁇ m, it is advantageous for the properties of sparkling, but may be restricted in realizing haze (Hz) and gloss unit (GU), and the content may be required more than necessary.
  • Hz haze
  • GUI gloss unit
  • the average particle diameter exceeds 5 ⁇ m, sparkling may occur, and the visibility of the particles may be visually impaired, resulting in a decrease in display visibility.
  • the particles include organic particles or inorganic particles.
  • the organic particles refer to particles having a functional group composed of hydrocarbons in the particles, and inorganic particles refer to particles having no functional groups composed of hydrocarbons in the particles.
  • organic particles examples include, but are not limited to, Styrenic Beads, Acrylic Beads, and Cross-linked Acrylic Beads.
  • Styrene beads refer to beads having styrene functional groups
  • acrylic beads refer to beads having acrylic functional groups
  • crosslinked acrylic beads refer to beads referring to crosslinked acrylic functional groups.
  • examples of the inorganic particles include silica particles, but are not limited thereto.
  • Silica particles are typically classified into Fumed silica particles and precipitated silica particles, which are distinguished by differences in silica production methods.
  • Fumed silica particles are generally made of quartz sand vaporized in a flame pyrolysis of silicon tetrachloride (SiCl 4 ) or an electric arc of 3000 o C.
  • Fumed silica particles are silica particles obtained after thermal decomposition and are high-purity nanosilica. Fumed silica can be used, for example, commercially available.
  • Precipitated silica particles are silica particles obtained through a process of precipitating using a solvent. Generally, the size of Fumed silica particles is smaller than that of precipitated silica particles.
  • the particles of the present invention may be preferably silica particles, which are advantageous in terms of securing surface hardness among organic or inorganic particles.
  • the particles are preferably contained in an amount of 1 to 5% by weight compared to the solid content of the resin composition for the anti-glare coating layer.
  • the solid content of the resin composition for an anti-glare coating layer refers to the solid content of the resin composition obtained by reacting the alkoxy silanes represented by Chemical Formulas 1 and 2.
  • the surface roughness (Ra) value of the anti-glare layer decreases, and the surface of the anti-glare layer is smooth, resulting in poor anti-glare properties. That is, the GU value exceeds 100.
  • the surface roughness (Ra) value of the anti-glare coating layer becomes large, and irregularities occur on the surface of the anti-glare coating layer, resulting in increased reflection and haze, which increases visibility. Falls. That is, the GU value is less than 40.
  • FIG. 1 is a schematic cross-sectional view of an anti-glare coating film according to an embodiment of the present invention.
  • Another preferred embodiment of the present invention includes a structure in which a high hardness coating layer 120 and an anti-glare coating layer 130 are sequentially stacked from the substrate 110 on the substrate 110, and the anti-glare coating layer 130 has an average particle diameter. It is to provide an anti-glare coating film containing the particles of 0.01 ⁇ m to 5 ⁇ m.
  • Ra surface roughness of the anti-glare coating layer 130 may be 100 to 300 nm.
  • the anti-glare coating film is a structure in which two layers of the high-hardness coating layer 120 and the anti-glare coating layer 130 are stacked.
  • the strength of the film is reduced.
  • the internal haze value becomes 0.9 or more, and visibility is deteriorated.
  • the anti-glare property is deteriorated. Therefore, it is necessary to be an anti-glare coating film having a laminated structure of a high hardness coating layer 120 and an anti-glare coating layer 130.
  • the anti-glare coating film is a substrate 110; A high hardness coating layer 120 on the substrate; And an anti-glare coating layer 130 on the high-hardness coating layer, and the anti-glare coating layer 130 includes particles 131 and a matrix 132.
  • the matrix 132 is a cured product of a material composed of components other than particles among resin composition components for the anti-glare coating layer.
  • the particles 131 may protrude from the matrix 132 to the outside of the anti-glare coating layer 130 or may be included therein. Due to the particles 131 protruding from the matrix 132, the surface roughness Ra of the anti-glare layer 130 increases, thereby increasing the anti-glare property of the anti-glare coating film. However, if the surface roughness (Ra) of the anti-glare coating layer 130 is excessively increased, the result of excessive reflection is less visible.
  • the substrate 110 is preferably a transparent substrate, and can be used without particular limitation if it is transparent.
  • the substrate 110 is a polyimide (PI) film, a polyethylene naphthalate (PEN) film, a triacetyl cellulose (TAC) film, a cyclo olefin polymer (Cyclo Olefin Polymer) , COP) film, cyclo olefin copolymer (Cyclic Olefin Copolymer, COC) film, acrylic (Acryl) film, etc.
  • PI polyimide
  • PEN polyethylene naphthalate
  • TAC triacetyl cellulose
  • COC cyclo olefin copolymer
  • COC Cyclic Olefin Copolymer
  • acrylic (Acryl) film etc.
  • the thickness of the transparent substrate 110 is preferably 10 to 200 ⁇ m, preferably 20 to 100 ⁇ m. If the thickness of the substrate 110 is less than 10 ⁇ m, film handling
  • the high hardness coating layer 120 is prepared from a resin composition for a high hardness coating layer comprising a siloxane resin chemically bonded from a compound containing at least one alkoxy silane selected from alkoxy silanes represented by Formula 1 and Formula 2, respectively.
  • the anti-glare coating layer 130 includes particles having an average particle diameter of 0.01 ⁇ m to 5 ⁇ m and a siloxane resin chemically bonded from a compound containing at least one alkoxy silane selected from alkoxy silanes represented by Formula 1 and Formula 2, respectively. It can be prepared from a resin composition for an anti-glare coating layer, the content of the resin composition for a high hardness coating layer and the resin composition for an anti-glare coating layer is the same as described above.
  • Ra (surface roughness) of the anti-glare coating layer 130 is preferably 100 to 300nm, preferably 160 to 300nm.
  • the surface roughness (Ra) is less than 100 nm
  • the surface of the anti-glare layer 130 is smooth without irregularities, and thereby, the anti-glare property of the coating film is deteriorated, and the GU of the anti-glare coating film exceeds 100.
  • the surface roughness (Ra) exceeds 300 nm
  • the unevenness of the surface of the anti-glare coating layer 130 becomes excessively large, thereby increasing the diffuse reflection of light, thereby reducing visibility.
  • the film has a GU of less than 40.
  • the thickness of the high hardness coating layer 120 may be 10 to 50 ⁇ m.
  • the thickness of the high-hardness coating layer 120 is 10 to 50 ⁇ m, a film having pencil strength and haze effective as an anti-glare coating film can be obtained.
  • the thickness of the anti-glare coating layer 130 may be 1 ⁇ m to 3 ⁇ m, preferably 2 ⁇ m to 3 ⁇ m.
  • the thickness of the anti-glare coating layer 130 satisfies 2 to 3 ⁇ m, anti-glare properties are improved, and an effect of preventing the particle from being detached from the film can be obtained.
  • the pencil hardness of the desired level can be achieved by the present invention, and the pencil hardness of 9H is achieved when 50 ⁇ m coating, so it is meaningless to exceed this.
  • the thickness of the anti-glare coating layer 130 is less than 1 ⁇ m, particles contained in the anti-glare coating layer 130 may not be combined with the anti-glare coating layer 130 with sufficient strength, which may cause detachment due to external impact. It is not desirable.
  • the thickness of the anti-glare coating layer 130 exceeds 3 ⁇ m, particles contained in the anti-glare coating layer 130 does not protrude to the surface of the anti-glare coating layer 130, the surface of the anti-glare coating layer 130 is less uneven , Accordingly, the surface roughness (Ra) becomes small.
  • the average particle diameter of the particles 131 of the present invention is 0.01 ⁇ m to 5 ⁇ m, and the thickness of the anti-glare coating layer 130 is 1 ⁇ m to 3 ⁇ m. Accordingly, particles 131 having an average particle diameter greater than the thickness of the anti-glare coating layer 130 protrude from the matrix 132 of the anti-glare coating layer 130, thereby increasing the surface roughness (Ra) of the anti-glare coating layer 130. Will be.
  • the protruding particles 131 irregularly drop light to increase the anti-glare property.
  • a high hardness coating layer 120 and an anti-glare coating layer 130 may be manufactured.
  • a uniform surface may be obtained through heat treatment before light irradiation, which may be performed at a temperature of 40° C. or more and about 300° C. or less, but may not be limited thereto.
  • the irradiation light amount but may be carried out under the conditions of 50mJ / cm 2 or more 20000mJ / cm 2 or less, it may not be limited thereto.
  • Examples 1 to 5 of the present invention relates to an anti-glare coating film comprising a high hardness coating layer, an anti-glare coating layer and a substrate according to Examples 1 to 5 of the present invention.
  • Figure 3 relates to the anti-glare coating film including only the anti-glare coating layer and the substrate, and shows the films of Comparative Examples 2 to 4 with the high hardness coating layer excluded.
  • the molecular weight and molecular weight distribution were obtained by weight permeation molecular weight (Mw) and number average molecular weight (Mn) in terms of polystyrene by gel permeation chromatography (GPC) (manufactured by Waters, model name e2695). .
  • the polymer to be measured was dissolved in tetrahydrofuran to a concentration of 1%, and 20 ⁇ l was injected into GPC. Tetrahydrofuran was used as the mobile phase of GPC, and flowed at a flow rate of 1.0 mL/min, and analysis was performed at 30°C.
  • the column was connected to two Styragel HR3 from Waters in series.
  • the detector was measured at 40°C using an RI detector (Waters, 2414).
  • PDI molecular weight distribution
  • Anti-glare coating by laminating the anti-glare coating layer in the same manner as in Example 1, except that 12 wt Fumed silica particles (AEROSIL300, EVONIK) were added to the resin composition for the high-hardness coating layer and stirred for 1 hour at room temperature after adding 3 wt% of solid content. A film was produced.
  • 12 wt Fumed silica particles AEROSIL300, EVONIK
  • Anti-glare coating by laminating the anti-glare coating layer in the same manner as in Example 1, except that 5 wt% of 12 nm Fumed silica particles (AEROSIL300, EVONIK) was added to the resin composition for the high-hardness coating layer and stirred at room temperature for 1 hour. A film was produced.
  • AEROSIL300, EVONIK Fumed silica particles
  • the anti-glare coating layer was performed in the same manner as in Example 1, except that the resin composition for the high-hardness coating layer was carried out without adding particles.
  • the anti-glare coating film prepared from the above Examples and Comparative Examples was subjected to physical property evaluation according to the following method, and the results are shown in Table 1 below.
  • Pencil hardness The pencil hardness was measured at a load of 1 kgf at a speed of ASTM D3363, 180 mm/min using a pencil hardness tester manufactured by IMOTO of Japan.
  • Ra surface roughness
  • the double-layer coating film produced using the coating resin composition of the present invention has excellent hardness and scratch resistance, and even provides anti-glare properties, and thus can be suitable as an anti-glare display protective film.

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  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition de résine destinée à revêtement antireflet et un film de revêtement antireflet ainsi préparé. En particulier, l'invention concerne une composition de résine, destinée à un revêtement antireflet, qui comprend une résine siloxane contenant un groupe époxy et un groupe acrylique et comprend des particules organiques ou inorganiques, et un film de revêtement antireflet ainsi préparé. Ainsi, la dureté, la résistance aux rayures et l'aptitude au traitement ainsi que les propriétés antireflet résultant de l'introduction de particules peuvent être obtenues. Un autre objectif de la présente invention est d'obtenir une dureté, une résistance aux rayures et des propriétés antireflet d'une résine pelliculaire et un film préparé au moyen de la composition de résine.
PCT/KR2019/017160 2018-12-07 2019-12-06 Composition de résine destinée à un revêtement antireflet et film de revêtement antireflet ainsi préparé WO2020116980A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19893597.5A EP3892695A4 (fr) 2018-12-07 2019-12-06 Composition de résine destinée à un revêtement antireflet et film de revêtement antireflet ainsi préparé
US17/267,748 US20210317321A1 (en) 2018-12-07 2019-12-06 Resin composition for anti-glare coating and anti-glare coating film prepared thereby
JP2021524193A JP2022506660A (ja) 2018-12-07 2019-12-06 防眩性コーティング用樹脂組成物及びこれを含んで製造された防眩性コーティングフィルム
CN201980080706.4A CN113166586A (zh) 2018-12-07 2019-12-06 用于防眩光涂料的树脂组合物和由其制备的防眩光涂膜

Applications Claiming Priority (4)

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KR10-2018-0156565 2018-12-07
KR20180156565 2018-12-07
KR1020190160469A KR20200070117A (ko) 2018-12-07 2019-12-05 방현성 코팅용 수지 조성물 및 이를 포함하여 제조된 방현성 코팅 필름
KR10-2019-0160469 2019-12-05

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WO2020116980A1 true WO2020116980A1 (fr) 2020-06-11

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