WO2024048406A1 - 防眩性積層体 - Google Patents
防眩性積層体 Download PDFInfo
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- WO2024048406A1 WO2024048406A1 PCT/JP2023/030442 JP2023030442W WO2024048406A1 WO 2024048406 A1 WO2024048406 A1 WO 2024048406A1 JP 2023030442 W JP2023030442 W JP 2023030442W WO 2024048406 A1 WO2024048406 A1 WO 2024048406A1
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- layer
- glare
- mass
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- acryloyl group
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/111—Anti-reflection coatings using layers comprising organic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133502—Antiglare, refractive index matching layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
Definitions
- the present invention relates to an anti-glare laminate. More specifically, the present invention provides in-vehicle liquid crystal display devices, mobile phone terminals, personal computers, and tablets that have anti-glare performance, high scratch resistance and adhesion to substrates, and excellent anti-glare performance.
- the present invention relates to an anti-glare laminate used as a surface material for PCs.
- an optical laminate is generally provided on the outermost surface to prevent reflection.
- Such an antireflection optical laminate suppresses image reflection and reduces reflectance by scattering and interference of light.
- an antiglare film is known in which an antiglare layer having an uneven shape is formed on the surface of a transparent base material.
- This anti-glare film can scatter external light due to the uneven shape of its surface, thereby preventing a decrease in visibility due to reflection of external light or image reflection.
- this optical laminate is usually installed on the outermost surface of a liquid crystal display device, it is also required to be provided with hard coating properties to prevent scratches during handling.
- a mixture of fine particles and a binder resin or a curable resin is usually applied to the base material to form fine irregularities on the surface. Prevents reflections and prevents image glare.
- Patent Document 1 discloses a method of using dipentaerythritol hexaacrylate, which is a polyfunctional acrylate, and Silicia 350, which is silica particles, in an anti-glare layer as a method for forming irregularities on the surface.
- active radiation-curable compounds with a high degree of crosslinking are generally used for the anti-glare layer, but due to the high degree of crosslinking, curing shrinkage becomes large and cracks occur during heating tests. There was a problem.
- an object of the present invention is to provide an anti-glare laminate that suppresses glare and has high scratch resistance while ensuring the heat resistance of the anti-glare layer.
- an anti-glare laminate including at least a base layer and an anti-glare layer,
- the anti-glare layer contains at least a polyfunctional (meth)acryloyl group-containing monomer (A), a (meth)acryloyl group-containing polymer (B), a photopolymerization initiator (C), and silica particles (D),
- the average particle size of the silica particles is 1 to 7 ⁇ m, and the oil absorption amount of the silica particles is 30 to 250 mL/100 g,
- the double bond equivalent of the component (B) is 400
- ⁇ 2> The antiglare laminate according to ⁇ 1> above, wherein the weight average molecular weight of the component (B) is 5,000 to 100,000.
- ⁇ 3> The method according to ⁇ 1> or ⁇ 2> above, wherein the content of component (D) is 1 to 20% by mass when the sum of components (A) and (B) is 100% by mass. It is an anti-glare laminate.
- ⁇ 4> The antiglare laminate according to any one of ⁇ 1> to ⁇ 3> above, wherein the base layer includes an aromatic polycarbonate layer.
- ⁇ 5> The antiglare laminate according to any one of ⁇ 1> to ⁇ 4> above, wherein the base layer includes at least two layers: an acrylic resin layer and an aromatic polycarbonate layer.
- ⁇ 6> The antiglare laminate according to any one of ⁇ 1> to ⁇ 5> above, which has an optical interference layer on the antiglare layer.
- ⁇ 7> The anti-glare laminate according to any one of ⁇ 1> to ⁇ 6> above, wherein the base layer has an adhesive layer on the surface opposite to the anti-glare layer.
- the anti-glare laminate reduces glare, has high hardness on the surface of the anti-glare layer, and has excellent heat resistance.
- FIG. 1 is a cross-sectional view showing a specific example of an anti-glare laminate that is an embodiment of the present invention.
- the structure of the anti-glare laminate 10 as a laminate illustrated in FIG. 1 includes an anti-glare layer 12, a polymethyl methacrylate layer (PMMA resin layer) 16, and a polycarbonate layer (PC resin layer) 20.
- PMMA resin layer polymethyl methacrylate layer
- PC resin layer polycarbonate layer
- the anti-glare laminate of the present invention has an anti-glare layer and a base layer. Each of these layers will be explained below.
- the anti-glare layer is composed of a composition containing a polyfunctional (meth)acryloyl group-containing monomer, a (meth)acryloyl group-containing polymer, a photopolymerization initiator, and silica particles. Furthermore, in order to improve the function of the anti-glare layer, it is possible to contain various additives. Components that can be included in the composition used as a raw material for the anti-glare layer will be described below.
- the anti-glare layer contains a polyfunctional (meth)acryloyl group-containing monomer.
- the polyfunctional (meth)acryloyl group-containing monomer improves the hardness of the anti-glare layer by being crosslinked through polymerization.
- a polyfunctional (meth)acryloyl group-containing monomer means a compound having two or more (meth)acryloyl groups.
- the polyfunctional (meth)acryloyl group-containing monomers may be used alone or in combination of two or more.
- Polyfunctional (meth)acryloyl group-containing monomers include 1,6-hexanediol (meth)acrylate, 1,9-nonanediol (meth)acrylate, bisphenol A di(meth)acrylate, trimethylolpropane tri(meth)acrylate, Examples include pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, and dipentaerythritol hexa(meth)acrylate.
- the polyfunctional (meth)acryloyl group-containing monomer may be alkylene oxide modified or epoxy modified. Modification with alkylene oxide or epoxy can suppress curing shrinkage during crosslinking and improve the heat resistance of the anti-glare layer.
- the molecular weight of the polyfunctional (meth)acryloyl group-containing monomer is preferably 1000 or less, more preferably 800 or less, and even more preferably 600 or less. If the molecular weight exceeds 1000, the adhesion to the substrate may decrease.
- the hydroxyl value of the polyfunctional (meth)acryloyl group-containing monomer is preferably 10 mgKOH/g or more, more preferably 30 mgKOH/g or more, and even more preferably 50 mgKOH/g or more. When the hydroxyl value is less than 10 mgKOH/g, the dispersibility of the composition may decrease.
- the blending amount of the polyfunctional (meth)acryloyl group-containing monomer is 40 to 90% by mass, when the total of the polyfunctional (meth)acryloyl group-containing monomer and the (meth)acryloyl group-containing polymer is 100% by mass, It is preferably 50 to 90% by mass, more preferably 55 to 85% by mass, and even more preferably 60 to 80% by mass. If it is less than 40% by mass, the adhesion between the anti-glare layer and the base layer will decrease, and if it exceeds 90% by mass, the heat resistance of the anti-glare layer will decrease.
- the anti-glare layer contains a (meth)acryloyl group-containing polymer.
- the (meth)acryloyl group-containing polymer suppresses curing shrinkage due to polymerization and improves heat resistance.
- (Meth)acryloyl group-containing polymers are produced by, for example, copolymerizing (meth)acrylic acid and (meth)acrylic acid glycidyl ether to synthesize an epoxy compound having a (meth)acrylate skeleton, and adding acrylic acid or methacrylic acid to this. It can be obtained by adding .
- a synthesis example is shown below.
- Examples of the epoxy (meth)acrylate used in the (meth)acryloyl group-containing polymer include those having a repeating unit represented by the following formula (I).
- formula (I) m is an alkylene group having 1 to 4 carbon atoms or a single bond
- n is an alkyl group having 1 to 4 carbon atoms or hydrogen
- p is a single bond or
- q is an alkyl group having 1 to 12 carbon atoms in total, which may contain at least one substituent of an epoxy group, a hydroxyl group, an acryloyl group, and a methacryloyl group, or , hydrogen.
- the epoxy (meth)acrylate polymer more preferably has the following repeating units, that is, in the above formula (I), m is an alkylene group having 1 or 2 carbon atoms, and n is an alkyl group having 1 or 2 carbon atoms. group, p is a single bond or a methylene group, and q is an alkyl group having a total carbon number of 1 to 6, which may contain at least one of the substituents of a glycidyl group, a hydroxyl group, and an acryloyl group, Or it contains a repeating unit that is hydrogen.
- m is a methylene group
- n is a methyl group
- p is a single bond
- q is an alkyl group having 5 or less carbon atoms including a methyl group or a glycidyl group (epoxy group). group, an alkyl group having 8 or less carbon atoms including a hydroxyl group and an acryloyl group, and the like.
- repeating units contained in the epoxy (meth)acrylate polymer include those represented by the following formulas (II-a), (II-b), and (II-c).
- the repeating unit of the above formula (II-a) is a repeating unit of the above formula (II-a), a repeating unit of the above formula (II-b), and a repeating unit of the above formula (II-c). It is preferably 30 to 85 mol%, more preferably 40 to 80 mol%, based on the total number of moles of repeating units.
- the repeating unit of formula (II-b) is preferably 5 to 30 mol%, more preferably 10 to 25 mol%, based on the total number of moles. Further, the repeating unit of formula (II-c) is preferably 10 to 40 mol%, more preferably 10 to 35 mol%, based on the total number of moles. Further, the molar ratio of the repeating unit of the above formula (II-a), the repeating unit of the above formula (II-b), and the repeating unit of the above formula (II-c) is preferably 4.5 to 5. .5:1.5 to 2.5:2.5 to 3.5, for example, 5:2:3.
- Such (meth)acryloyl group-containing polymers are commercially available and can be easily obtained.
- SMP-220A manufactured by Kyoeisha Chemical Co., Ltd.
- SMP-250A manufactured by Kyoeisha Chemical Co., Ltd.
- SMP-360A manufactured by Kyoeisha Chemical Co., Ltd.
- SMP-550A manufactured by Kyoeisha Chemical Co., Ltd.
- HA7975 manufactured by Showa Denko Materials Co., Ltd.
- HA7975D manufactured by Showa Denko Materials Co., Ltd.
- RA-4101 manufactured by Negami Kogyo Co., Ltd.
- 8KX-078 manufactured by Taisei Fine Chemicals Co., Ltd.
- 8KX-212 manufactured by Taisei Fine Chemical Co., Ltd.
- the double bond equivalent of the (meth)acryloyl group-containing polymer is 400 g/mol or less, preferably 360 g/mol or less, and more preferably 250 g/mol or less. If it exceeds 400 g/mol, the hardness of the anti-glare layer will decrease.
- the weight average molecular weight of the (meth)acryloyl group-containing polymer is preferably 5,000 to 100,000, more preferably 10,000 to 70,000, and even more preferably 15,000 to 50,000. . If it is less than 5,000, the effect of suppressing curing shrinkage may not be obtained, and if it exceeds 100,000, the viscosity of the composition may increase and coating may become difficult.
- the blending amount of the (meth)acryloyl group-containing polymer is 10 to 60% by mass, preferably 100% by mass when the total of the polyfunctional (meth)acryloyl group-containing monomer and the (meth)acryloyl group-containing polymer is 100% by mass.
- the content is 10 to 50% by weight, more preferably 15 to 45% by weight, and even more preferably 20 to 40% by weight. If it is less than 10% by mass, the heat resistance of the anti-glare layer will decrease, and if it exceeds 60% by mass, the adhesion between the anti-glare layer and the base layer will decrease.
- the anti-glare layer contains silica particles.
- the silica particles provide an anti-glare effect by forming irregularities on the surface of the anti-glare layer.
- Examples of methods for producing silica particles include dry methods and wet methods.
- the wet method is preferred from the viewpoint of having many surface silanol groups and dispersibility with the resin.
- the shape of the silica particles is not particularly limited, and examples include spherical and amorphous shapes, but amorphous shapes are more preferable because they adhere firmly to the resin and have the effect of improving the scratch resistance of the anti-glare layer. .
- the average particle diameter of the silica particles is 1 to 7 ⁇ m, preferably 2 to 6 ⁇ m, and more preferably 3 to 5 ⁇ m. If it is less than 1 ⁇ m, no anti-glare effect can be obtained, and if it is more than 7 ⁇ m, glare is likely to occur.
- the average particle size of silica particles can be measured by laser diffraction.
- the oil absorption amount of the silica particles is 30 to 250 mL/100 g, preferably 70 to 230 mL/100 g, and more preferably 90 to 200 mL/100 g. If the oil absorption amount is less than 30 mL/100 g, the dispersibility in the resin will decrease, and if the oil absorption amount is more than 250 mL/100 g, the anti-glare layer will tend to glare. In the present invention, the oil absorption amount of silica particles can be measured according to JIS K5101.
- silica particles are commercially available and can be easily obtained.
- Examples include the AEROSIL series.
- the blending amount of silica particles is preferably 1 to 20% by mass, more preferably 3% by mass when the total of the polyfunctional (meth)acryloyl group-containing monomer and (meth)acryloyl group-containing polymer is 100% by mass.
- the amount is 18% by weight, more preferably 5% to 15% by weight. If it is less than 1% by mass, the anti-glare effect may not be obtained, and if it exceeds 20% by mass, the total light transmittance of the anti-glare laminate may decrease or glare may easily occur.
- the anti-glare layer contains a photopolymerization initiator.
- a photopolymerization initiator Omnirad 184 (1-hydroxy-cyclohexyl-phenyl-ketone), Omnirad 1173 (2-hydroxy-2-methyl-1-phenyl-propan-1-one), Omnirad manufactured by IGM Resins BV; TPO (2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide), Omnirad 819 (bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide), EsacureONE from Lamberti (oligo(2-hydroxy -2-methyl-1-[4-(1-methylvinyl)phenyl]propanone) and the like are used, and among these, Omnirad 184 and the like are preferred as the photopolymerization initiator from the viewpoint of heat resistance.
- the anti-glare layer preferably contains a photopolymerization initiator in an amount of 1% by weight or more and 6% by weight or less based on the total weight of the anti-glare layer.
- the content of the photopolymerization initiator in the anti-glare layer is more preferably 2% by weight or more and 5% by weight or less, and even more preferably 3% by weight or more and 4% by weight or less.
- Nanoparticles can be added to impart scratch resistance and hardness to the anti-glare layer.
- nanosilica, nanoalumina, nanotitania, nanozirconia, etc. can be used.
- nanodiamonds or the like may be used as the organic particles.
- the nanoparticles contained in the anti-glare layer are preferably treated with a surface treatment agent. The surface treatment allows the inorganic nanoparticles to be stably dispersed in the composition, particularly in the (meth)acryloyl group-containing polymer.
- Surface treatment agents for nanoparticles include substituents that can bind to the surface of nanoparticles and substituents that are highly compatible with components of the hard coat composition in which nanoparticles are dispersed, especially with (meth)acryloyl group-containing polymers.
- Compounds having the following are preferably used. For example, silane compounds, alcohols, amines, carboxylic acids, sulfonic acids, phosphonic acids, etc. are used as surface treatment agents.
- the nanoparticles preferably have copolymerizable groups on their surfaces.
- the copolymerizable group can be introduced by surface treatment of the inorganic nanoparticles, and specific examples of the copolymerizable group include a vinyl group, a meth (acrylic) group, a free radical polymerizable group, and the like.
- the average particle diameter of the nanoparticles is preferably 5 to 500 nm, more preferably 10 to 300 nm, and even more preferably 20 to 100 nm. Note that the average particle size of the nanoparticles is measured using, for example, Zetasizer Nano ZS manufactured by Malvern Panalytical, according to a particle size measurement method using a dynamic light scattering method.
- Nanoparticles include, for example, the Snowtex series from Nissan Chemical, the Organosilica Sol series, and the Admanano series from Admatex.
- a silicone-based compound In order to impart leveling properties, antifouling properties, and abrasion resistance to the antiglare layer, it is possible to add a silicone-based compound.
- the silicone compound one having a polyalkylsiloxane bond is preferably used.
- synthetic products for these compounds it is also possible to easily obtain commercial products.
- the KP series from Shin-Etsu Silicone, the BYK series from BYK Chemie Japan, and the TEGO Glide series from EVONIK can be used.
- a fluorine-based compound In order to impart leveling properties, antifouling properties, and abrasion resistance to the antiglare layer, it is possible to add a fluorine-based compound.
- the fluorine-based compound one having a perfluoropolyether bond is preferably used.
- synthetic products for these compounds it is also possible to easily obtain commercial products. For example, DIC's Megafac RS series, Shin-Etsu Chemical's KY series, Daikin's Optool series, etc. can be used.
- an ultraviolet absorber In order to impart weather resistance to the anti-glare layer, it is possible to add an ultraviolet absorber.
- the ultraviolet absorber include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, and 2-hydroxybenzophenone.
- -4-octadecyloxybenzophenone 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, etc.
- Benzophenone UV absorber 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy-3,5-di-t-butylphenyl)benzotriazole, 2-(2-hydroxy-3 Benzotriazole UV absorbers such as -t-butyl-5-methylphenyl)benzotriazole, (2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, salicylic acid Benzoate UV absorbers such as phenyl, 2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate, 2,4-diphenyl-6-(2-hydroxy-4- methoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-ethoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-(2-hydroxy- 4-propoxyphenyl)-1,
- Examples include triazole ultraviolet absorbers.
- the content of the ultraviolet absorber in the anti-glare layer is preferably 0 to 5% by mass, more preferably 0 to 3% by mass, and still more preferably 0 to 1% by mass. If it exceeds 5% by mass, UV curing may be inhibited.
- light stabilizers include bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate, bis(1- undecanoxy 2,2,6,6-tetramethylpiperidin-4-yl) carbonate, 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, Bis[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl], 2-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl decanedioate ]-2-Butylpropanedioic acid bis[1,2,2,6,6-pentamethyl-4-piperidinyl] and other hindered amine light stabilizers
- the content of the light stabilizer in the anti-glare layer is preferably 0 to 5% by mass, more preferably 0 to 3% by mass, and still more preferably 0 to 1% by mass. If it exceeds 5% by mass, UV curing may be inhibited.
- the diluting solvent used to prepare the composition for forming an anti-glare layer is used to adjust the viscosity, and is not particularly limited as long as it is non-polymerizable. By using such a diluting solvent, the composition for forming an anti-glare layer can be easily applied onto the transparent base layer.
- diluting solvent examples include toluene, xylene, ethyl acetate, propyl acetate, butyl acetate, methyl cellosolve, ethyl cellosolve, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, methyl alcohol, ethyl alcohol, isopropyl alcohol, butyl alcohol,
- Possible methods for coating the base layer with the composition for forming an anti-glare layer include a bar coater, a gravure coater, a die coater, dip coating, and spray coating.
- the drying temperature is preferably 30 to 150°C, more preferably 60 to 120°C. If it is less than 30°C, there is a high possibility that the organic solvent will remain and affect the physical properties of the anti-glare layer, and if it exceeds 150°C, there is a possibility that the base material layer will be deformed.
- the thickness of the anti-glare layer is preferably in the range of 1 ⁇ m to 30 ⁇ m, more preferably 2 ⁇ m to 20 ⁇ m, and even more preferably 5 ⁇ m to 15 ⁇ m. If it is less than 1 ⁇ m, it is difficult to obtain the desired performance, and if it exceeds 30 ⁇ m, warpage and flexibility may deteriorate.
- the base material layer contains thermoplastic resin.
- the type of thermoplastic resin is not particularly limited, but examples include polycarbonate (PC) resin, acrylic resin such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), triacetyl cellulose (TAC), polyethylene naphthalate (PEN), polyimide ( Various resins such as PI), cycloolefin copolymer (COC), norbornene-containing resin, polyether sulfone, cellophane, and aromatic polyamide are used.
- the thermoplastic resin of the base layer preferably contains at least polycarbonate resin. Furthermore, it is desirable to use aromatic polycarbonate from the viewpoint of toughness and heat resistance.
- the type of polycarbonate resin contained in the base material layer is -[O-R-OCO]- unit containing a carbonate ester bond in the molecular main chain (R is an aliphatic group, an aromatic group, or an aliphatic group and an aromatic group).
- R is an aliphatic group, an aromatic group, or an aliphatic group and an aromatic group.
- polycarbonate having a bisphenol skeleton is preferable, and has a bisphenol A skeleton or a bisphenol C skeleton.
- Polycarbonate is particularly preferred.
- As the polycarbonate resin a mixture or copolymer of bisphenol A and bisphenol C may be used.
- the hardness of the base layer can be improved.
- the viscosity average molecular weight of the polycarbonate resin is preferably 15,000 to 40,000, more preferably 20,000 to 35,000, and even more preferably 22,500 to 25,000.
- the acrylic resin contained in the base layer is not particularly limited, but examples include homopolymers of various (meth)acrylic acid esters represented by polymethyl methacrylate (PMMA) and methyl methacrylate (MMA), or PMMA. It is a copolymer of MMA and one or more other monomers, and also a mixture of multiple types of these resins. Among these, preferred are (meth)acrylates containing a cyclic alkyl structure that have low birefringence, low moisture absorption, and excellent heat resistance.
- Examples of such (meth)acrylic resins include, but are not limited to, Acrypet (manufactured by Mitsubishi Rayon), Delpet (manufactured by Asahi Kasei Chemicals), and Parapet (manufactured by Kuraray).
- the base layer may contain additives as components other than the thermoplastic resin.
- additives selected from the group consisting of heat stabilizers, antioxidants, flame retardants, flame retardant aids, ultraviolet absorbers, mold release agents, and colorants.
- antistatic agents, optical brighteners, antifogging agents, fluidity improvers, plasticizers, dispersants, antibacterial agents, and the like may be added to the base layer.
- the base material layer preferably contains 80% by mass or more of the thermoplastic resin, more preferably 90% by mass or more, particularly preferably 95% by mass or more of the thermoplastic resin. Further, it is preferable that the thermoplastic resin of the base layer contains 80% by mass or more of polycarbonate resin, more preferably 90% by mass or more, particularly preferably 95% by mass or more of polycarbonate resin. .
- an optical interference layer is provided on the antiglare layer.
- the method for forming the optical interference layer is not particularly limited, and methods such as coating, vapor deposition, and sputtering can be used.
- a paint containing hollow silica can be used as a material for forming by coating.
- the thickness of the layer containing hollow silica is preferably 80 to 120 nm.
- a metal oxide can be used as a material for forming the film by vapor deposition or sputtering.
- SiO 2 , TiO 2 , Nb 2 O 5 or the like can be used.
- An optical interference effect can be obtained by alternately laminating low refractive index layers and high refractive index layers to form layers with a thickness of 200 to 300 nm.
- An adhesion layer such as SiON or SiOx may be provided between the anti-glare layer and the optical interference layer to improve adhesion.
- the base layer has an adhesive layer on the surface opposite to the anti-glare layer.
- the method of forming the adhesive layer is not particularly limited, but it is preferably formed by a coating method.
- the material for the adhesive layer is not particularly limited, but acrylic adhesives, silicone adhesives, urethane adhesives, etc. can be used.
- the thickness of the adhesive layer is not particularly limited, but is preferably 10 ⁇ m or more, more preferably 25 ⁇ m or more, even more preferably 35 ⁇ m or more, and may be 40 ⁇ m or more. Further, the thickness of the adhesive layer is preferably 70 ⁇ m or less, more preferably 60 ⁇ m or less. By keeping it within the above range, more appropriate adhesive properties and adhesive strength can be achieved.
- a protective film After drying, a protective film can be attached to the anti-glare layer to prevent damage to the anti-glare layer.
- the surface of the protective film in contact with the anti-glare layer has an adhesive surface having appropriate adhesive strength, and is laminated to the surface of the anti-glare layer.
- the protective film may be a single layer consisting of only an adhesive layer, but preferably has a two-layer structure consisting of a base material and an adhesive layer. In a two-layer protective film, the adhesive layer is laminated on the anti-glare layer such that the adhesive surface of the adhesive layer is in contact with the anti-glare layer.
- the protective film may have a multilayer structure that further includes layers other than the above-mentioned base material and adhesive layer. Further, the protective film may have a single-layer structure, and even in the case of a single-layer protective film, the adhesive surface, which is the surface on the anti-glare layer side, has appropriate adhesive strength.
- the base material of the protective film is preferably molded from a thermoplastic resin, and more preferably contains a polyolefin resin.
- a polyolefin resin contained in the protective film for example, polyethylene, polypropylene, etc. can be used, and it may be a homopolymer or a copolymer.
- polyolefin resins polyethylene is preferred.
- polyethylene low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), etc.
- LDPE low density polyethylene
- LLDPE linear low density polyethylene
- VLDPE very low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- polystyrene copolymer a copolymer of ethylene or propylene and a monomer copolymerizable with these can be used.
- monomers that can be copolymerized with ethylene or propylene include ⁇ -olefins, styrenes, dienes, cyclic compounds, and oxygen atom-containing compounds.
- the above ⁇ -olefins include 1-butene, 3-methyl-1-butene, 3-methyl-1-pentene, 4-methyl-1-pentene, 1-pentene, 1-hexene, 1-heptene, 1-octene. , 1-decene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene and the like.
- Examples of the styrenes include styrene, 4-methylstyrene, 4-dimethylaminostyrene, and the like.
- the dienes include 1,3-butadiene, 1,5-hexadiene, 1,4-hexadiene, and 1,7-octadiene.
- Examples of the cyclic compounds include norbornene and cyclopentene.
- Examples of the oxygen atom-containing compound include hexenol, hexenoic acid, methyl octenoate, and the like. These copolymerizable monomers may be used alone or in combination of two or more. It may also be a copolymer of ethylene and propylene. The copolymer may be an alternating copolymer, a random copolymer, or a block copolymer.
- the polyolefin resin contained in the base material of the protective film includes a modified polyolefin resin modified with a small amount of carboxyl group-containing monomers such as acrylic acid, maleic acid, methacrylic acid, maleic anhydride, fumaric acid, and itaconic acid. It may be Modification is usually possible by copolymerization or graft modification.
- the base material of the protective film preferably contains 80% by weight or more of a polyolefin resin, more preferably 90% by weight or more of a polyolefin resin, based on the total weight of the base material, and even more preferably , containing 95% by weight or more of polyolefin resin.
- the adhesive layer of the protective film is preferably molded from an elastomer or a thermoplastic resin.
- the thermoplastic resin contained in the adhesive layer include polyolefin resins such as polypropylene and modified polyolefin.
- polyolefin resin contained in the masking film for example, polyethylene, polypropylene, etc. can be used, and it may be a homopolymer or a copolymer.
- polyethylene is preferred.
- the adhesive layer of the protective film preferably contains 80% by weight or more of an elastomer or thermoplastic resin, more preferably 90% by weight or more of an elastomer or thermoplastic resin, based on the total weight of the adhesive layer, and Preferably, it contains 95% by weight or more of an elastomer or thermoplastic resin.
- the thickness of the protective film is preferably 10 ⁇ m to 100 ⁇ m, more preferably 20 ⁇ m to 80 ⁇ m.
- ⁇ SW hardness> The surface of the anti-glare layer was scratched by moving #0000 steel wool back and forth 15 times under a pressure of 100 gf/cm 2 .
- the degree of damage was evaluated on a 10-point scale by visual observation. It is described as RANK1 to RANK10.
- RANK1 No scratches (equivalent to inorganic glass)
- RANK2 1 to 5 scratches
- RANK3 6 to 10 scratches
- RANK4 11 to 15 scratches
- RANK5 16 to 20 scratches
- RANK6 21 to 25 scratches
- RANK7 26 to 30 scratches
- RANK8 31 to 40 scratches
- RANK9 41 or more scratches (same as polymethacrylic acid)
- RANK10 41 or more scratches (same as polycarbonate)
- Preparation example 1 DPE-6A (6-functional acryloyl group-containing monomer, manufactured by Kyoeisha Chemical Co., Ltd.) 50% by mass, SMP-220A (acryloyl group-containing polymer, double bond equivalent 220 g/mol, manufactured by Kyoeisha Chemical Co., Ltd.) 50% by mass, Omnirad 184 (photopolymerization initiator, manufactured by IGM Resins BV) 3% by mass, Silicia 430 (silica particles, average particle size 4.1 ⁇ m, oil absorption 230 mL/100g, manufactured by Fuji Silysia Chemical Co., Ltd.) 7% by mass, solid content concentration
- the mixture was diluted with propylene glycol monoethyl ether to a concentration of 40%, and stirred with a homogenizer for 10 minutes to obtain a mixed solution.
- Example 1 As a base material, DF02U (manufactured by Mitsubishi Gas Chemical, thickness 0.180 mm), which is a two-layer product of bisphenol A type polycarbonate and PMMA, was used, and the PMMA side was adjusted to a film thickness of 10 ⁇ m after drying using a bar coater. The mixture obtained in Example 1 was applied and dried in an oven at 70°C for 2 minutes. Thereafter, UV curing was performed in a nitrogen atmosphere using a UV irradiation machine manufactured by Heraeus Co., Ltd. so that the cumulative amount of light was 400 mJ to obtain an anti-glare laminate.
- DF02U manufactured by Mitsubishi Gas Chemical, thickness 0.180 mm
- Example 2 Example 1 except that Cylysia 550 (silica particles, average particle size 3.9 ⁇ m, oil absorption 160 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1. An antiglare laminate was produced in the same manner.
- Cylysia 550 sica particles, average particle size 3.9 ⁇ m, oil absorption 160 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.
- Example 3 Example 1 except that Cylysia 730 (silica particles, average particle size 4.0 ⁇ m, oil absorption 95 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1. An antiglare laminate was produced in the same manner.
- Cylysia 730 sica particles, average particle size 4.0 ⁇ m, oil absorption 95 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.
- Example 4 Examples except that Thylophobic 200 (silica particles, average particle size 3.9 ⁇ m, oil absorption 230 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.) was used in place of Thylysia 430 in Preparation Example 1.
- An antiglare laminate was produced in the same manner as in Example 1.
- Example 5 Example 1 except that 20SM-C11 (silica particles, average particle size 2.0 ⁇ m, oil absorption 35 mL/100 g, manufactured by Admatex Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1. An antiglare laminate was produced in the same manner.
- 20SM-C11 sica particles, average particle size 2.0 ⁇ m, oil absorption 35 mL/100 g, manufactured by Admatex Co., Ltd.
- Example 6 Anti-glare properties were obtained in the same manner as in Example 1, except that DPE-6A in Preparation Example 1 was 65% by mass and SMP-220A was 35% by mass, and Thylysia 550 was used in place of Thylysia 430. A laminate was manufactured.
- Example 7 Anti-glare properties were obtained in the same manner as in Example 1, except that DPE-6A in Preparation Example 1 was 70% by mass and SMP-220A was 30% by mass, and Thylysia 550 was used in place of Thylysia 430. A laminate was manufactured.
- Example 8 SMP-250A (acryloyl group-containing polymer, double bond equivalent: 360 g/mol, manufactured by Kyoeisha Chemical Co., Ltd.) was used in place of SMP-220A in Preparation Example 1, and Thylysia 550 was used in place of Thylysia 430.
- An antiglare laminate was produced in the same manner as in Example 1 except for this.
- Example 9 SMP-360A (acryloyl group-containing polymer, double bond equivalent 360 g/mol, manufactured by Kyoeisha Chemical Co., Ltd.) was used in place of SMP-220A in Preparation Example 1, and Thylysia 550 was used in place of Thylysia 430.
- An antiglare laminate was produced in the same manner as in Example 1 except for this.
- Example 10 Except that PE-3A (trifunctional acryloyl group-containing monomer, manufactured by Kyoeisha Chemical Co., Ltd.) was used in place of DPE-6A in Preparation Example 1, and Thylysia 550 was used in place of Thylysia 430.
- An antiglare laminate was produced in the same manner as in Example 1.
- Example 11 Except that PE-4A (tetrafunctional acryloyl group-containing monomer, manufactured by Kyoeisha Chemical Co., Ltd.) was used in place of DPE-6A in Preparation Example 1, and Thylysia 550 was used in place of Thylysia 430.
- An antiglare laminate was produced in the same manner as in Example 1.
- Example 1 Example 1 except that Cylysia 350 (silica particles, average particle size 3.9 ⁇ m, oil absorption 320 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1. An antiglare laminate was produced in the same manner.
- Cylysia 350 sica particles, average particle size 3.9 ⁇ m, oil absorption 320 mL/100 g, manufactured by Fuji Silysia Chemical Co., Ltd.
- Example 3 Example 1 except that Nipsil E-1011 (silica particles, average particle size 4.2 ⁇ m, oil absorption 350 mL/100 g, manufactured by Tosoh Silica Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1.
- An anti-glare laminate was produced in the same manner as above.
- Example 4 Example 1 except that Nipsil E-1009 (silica particles, average particle size 5.6 ⁇ m, oil absorption 350 mL/100 g, manufactured by Tosoh Silica Co., Ltd.) was used in place of Cylysia 430 in Preparation Example 1.
- An anti-glare laminate was produced in the same manner as above.
- Example 7 An antiglare laminate was produced in the same manner as in Example 1, except that DPE-6A and SMP-220A were 100% by mass and 0% by mass, respectively.
- Example 8 The same procedure as in Example 1 was used, except that SMP-550A (acryloyl group-containing polymer, double bond equivalent: 550 g/mol, manufactured by Kyoeisha Chemical Co., Ltd.) was used in place of SMP-220A in Preparation Example 1.
- An antiglare laminate was manufactured by the method.
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Abstract
Description
<1> 少なくとも基材層及び防眩層を含む防眩性積層体であって、
前記防眩層が、少なくとも、多官能(メタ)アクリロイル基含有モノマー(A)、(メタ)アクリロイル基含有ポリマー(B)、光重合開始剤(C)、及びシリカ粒子(D)を含み、
前記シリカ粒子の平均粒径が1~7μmであり、かつ、前記シリカ粒子の吸油量が30~250mL/100gであり、
前記(A)成分と(B)成分の合計を100質量%とした際の(A)成分の割合が40~90質量%であり、(B)成分の割合が10~60質量%であり、
前記(B)成分の二重結合当量が400g/mol以下である、前記防眩性積層体である。
<2> 前記(B)成分の重量平均分子量が5,000~100,000である、上記<1>に記載の防眩性積層体である。
<3> 前記(A)成分と(B)成分の合計を100質量%とした際の(D)成分の含有量が1~20質量%である、上記<1>または<2>に記載の防眩性積層体である。
<4> 前記基材層が芳香族ポリカーボネート層を含む、上記<1>~<3>のいずれかに記載の防眩性積層体である。
<5> 前記基材層がアクリル樹脂層と芳香族ポリカーボネート層の少なくとも2層を含む、上記<1>~<4>のいずれかに記載の防眩性積層体である。
<6> 前記防眩層上に光学干渉層を有する、上記<1>~<5>のいずれかに記載の防眩性積層体である。
<7> 前記基材層の、防眩層とは反対の面に粘着層を有する、上記<1>~<6>のいずれかに記載の防眩性積層体である。
防眩層は、多官能(メタ)アクリロイル基含有モノマー、(メタ)アクリロイル基含有ポリマー、光重合開始剤、及びシリカ粒子を含有する組成物から構成される。更に防眩層の機能を向上させるため、様々な添加剤を含有することが可能である。以下、防眩層の原料として用いられる組成物に含まれ得る成分について説明する。
防眩層には多官能(メタ)アクリロイル基含有モノマーが含まれる。多官能(メタ)アクリロイル基含有モノマーは重合により架橋することで防眩層の硬度を向上させる。
防眩層には(メタ)アクリロイル基含有ポリマーが含まれる。(メタ)アクリロイル基含有ポリマーは重合による硬化収縮を抑制し、耐熱性を向上させる。
例えば、上記式(I)において、mはメチレン基であり、nはメチル基であり、pは単結合であり、qは、メチル基、グリシジル基(エポキシ基)を含む炭素数5以下のアルキル基、水酸基とアクリロイル基とを含む炭素数8以下のアルキル基等である。
また、上記式(II-a)の繰り返し単位と、上記式(II-b)の繰り返し単位と、上記式(II-c)の繰り返し単位とのモル比は、好ましくは、4.5~5.5:1.5~2.5:2.5~3.5であり、例えば、5:2:3である。
防眩層においては、防眩層の全重量を基準として1重量%以上6重量%以下の光重合開始剤が含まれることが好ましい。光重合開始剤の防眩層における含有量は、より好ましくは2重量%以上5重量%以下であり、さらに好ましくは3重量%以上4重量%以下である。
基材層は、熱可塑性樹脂を含む。熱可塑性樹脂の種類について特に限定されないが、ポリカーボネート(PC)樹脂、ポリメチルメタクリレート(PMMA)等のアクリル樹脂、ポリエチレンテレフタレート(PET)、トリアセチルセルロース(TAC)、ポリエチレンナフタレート(PEN)、ポリイミド(PI)、シクロオレフィンコポリマー(COC)、含ノルボルネン樹脂、ポリエーテルスルホン、セロファン、芳香族ポリアミド等の各種樹脂が用いられる。基材層の熱可塑性樹脂は、これらの選択肢のうち、少なくともポリカーボネート樹脂を含むことが好ましい。更には、靭性や耐熱性の観点から芳香族ポリカーボネートを用いることが望ましい。
また、ポリカーボネート樹脂の粘度平均分子量は、15,000~40,000であることが好ましく、より好ましくは20,000~35,000であり、さらに好ましくは22,500~25,000である。
本発明の好ましい実施形態では、防眩層上に光学干渉層を有する。光学干渉層の形成方法は特に限定されず、塗布、蒸着、スパッタ成膜等の方法を用いることができる。
塗布で形成する際の材料としては、中空シリカを含む塗料を用いることができる。中空シリカを含んだ層の膜厚としては80~120nmであることが好ましい。
蒸着あるいはスパッタ成膜で形成する際の材料としては、金属酸化物を用いることができる。金属酸化物としてはSiO2、TiO2、Nb2O5等を用いることができる。
低屈折率層と高屈折率層とを交互に積層し、膜厚200~300nmの層を形成することで、光学干渉効果が得られる。防眩層と光学干渉層との間には、密着性向上のためにSiONやSiOx等の密着層を設けてもよい。
本発明の好ましい実施形態では、基材層の、防眩層とは反対の面に粘着層を有する。粘着層の形成方法は特に限定されないが、塗布法で形成することが好ましい。粘着層の材料としては、特に制限はないが、アクリル粘着剤、シリコーン粘着剤およびウレタン粘着剤等を用いることができる。粘着層の厚みは、特に制限はないが、10μm以上であることが好ましく、25μm以上であることがより好ましく、35μm以上であることがさらに好ましく、40μm以上であってもよい。また、粘着層の厚みは、70μm以下であることが好ましく、60μm以下であることがより好ましい。上記範囲内とすることで、より適切な粘着特性および粘着強度が達成される。
乾燥後、防眩層の傷つきを防止するため、保護フィルムを防眩層に張り付けることができる。保護フィルムは、防眩層に接する表面が、適度な粘着力を有する粘着面を有し、防眩層の表面に貼合される。保護フィルムは、粘着層のみの単層でもよいが、基材と粘着層との2層構造を有することが好ましい。2層構造の保護フィルムにおいては、粘着層の粘着面が防眩層に接するように防眩層に積層される。保護フィルムは、上述の基材と粘着層以外の層をさらに含む多層構造であってもよい。また、保護フィルムは、単層構造であってもよく、単層構造の保護フィルムにおいても、防眩層側の表面である粘着面が適度な粘着力を有している。
ポリエチレンとしては、低密度ポリエチレン(LDPE)、直鎖状低密度ポリエチレン(LLDPE)、超低密度ポリエチレン(VLDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)等を用いることができるが、低密度ポリエチレンが好ましい。
共重合体は、交互共重合、ランダム共重合、ブロック共重合のいずれであってもよい。
防眩層の表面の上に、#0000のスチールウールを100gf/cm2の圧力下で15回往復させ、擦傷させた。傷つき具合を目視観察で10段階評価した。RANK1~RANK10で記載した。
RANK1:傷なし(無機ガラスと同等)
RANK2:傷1~5本
RANK3:傷6~10本
RANK4:傷11~15本
RANK5:傷16~20本
RANK6:傷21~25本
RANK7:傷26~30本
RANK8:傷31~40本
RANK9:傷41本以上(ポリメタクリル酸と同等)
RANK10:傷41本以上(ポリカーボネートと同等)
JIS K 5600-5-4:1999の条件に基づき測定を行い、傷の入らないもっとも硬い鉛筆の番手を鉛筆硬度とした。
JIS K5600-5-6:1999の評価方法によって評価した。評価結果が分類0である実施例及び比較例について、密着性が「良好」と評価し、評価結果が分類1~5であるものを密着性が「不良」と評価した。
防眩性積層体を沸騰させた水中に30分間浸漬した後、目視で外観を評価した。変化の無かった実施例及び比較例について「良好」と評価し、変化したものを「不良」と評価した。
村上色彩社製ヘイズメーター「HM-150」を用いて、JIS K 7136:2000に基づき評価した。
富士フイルム和光純薬社製の「アマニ油」を用いて、JIS K 5101に準じて測定した。
防眩性積層体を緑色表示(R:29、G:205、B:0)した265ppiのipad6上に防眩層を上向きに設置し、ギラツキの程度を目視し、下記の基準で評価した。
A:ギラツキがほとんど見られない
B:ギラツキが見られるが実用上問題ない
C:実用上問題のあるギラツキが見られる
DPE-6A(6官能アクリロイル基含有モノマー、共栄社化学(株)製)50質量%、SMP-220A(アクリロイル基含有ポリマー、二重結合当量220g/mol、共栄社化学(株)製)50質量%、Omnirad184(光重合開始剤、IGM Resins B.V製)3質量%、サイリシア430(シリカ粒子、平均粒径4.1μm、吸油量230mL/100g、富士シリシア化学(株)製)7質量%、固形分濃度として40%となるようにプロピレングリコールモノエチルエーテルで希釈し、ホモジナイザーで10分間撹拌し、混合液を得た。
基材として、ビスフェノールA型ポリカーボネートとPMMAの2層品であるDF02U(三菱ガス化学製:厚み0.180mm)を使用し、PMMA側にバーコーターにより乾燥後の膜厚が10μmになるように調製例1で得た混合液を塗工し、オーブンで70℃―2分乾燥した。その後、へレウス(株)製のUV照射機を用いて窒素雰囲気下で積算光量が400mJとなるようにUV硬化を行い、防眩性積層体を得た。
調製例1のサイリシア430に代えて、サイリシア550(シリカ粒子、平均粒径3.9μm、吸油量160mL/100g、富士シリシア化学(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、サイリシア730(シリカ粒子、平均粒径4.0μm、吸油量95mL/100g、富士シリシア化学(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、サイロホービック200(シリカ粒子、平均粒径3.9μm、吸油量230mL/100g、富士シリシア化学(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、20SM―C11(シリカ粒子、平均粒径2.0μm、吸油量35mL/100g、(株)アドマテックス製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aを65質量%、SMP-220Aを35質量%としたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aを70質量%、SMP-220Aを30質量%としたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のSMP-220Aに代えて、SMP-250A(アクリロイル基含有ポリマー、二重結合当量360g/mol、共栄社化学(株)製)を用いたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のSMP-220Aに代えて、SMP-360A(アクリロイル基含有ポリマー、二重結合当量360g/mol、共栄社化学(株)製)を用いたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aに代えて、PE-3A(3官能アクリロイル基含有モノマー、共栄社化学(株)製)を用いたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aに代えて、PE-4A(4官能アクリロイル基含有モノマー、共栄社化学(株)製)を用いたこと、サイリシア430に代えてサイリシア550を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、サイリシア350(シリカ粒子、平均粒径3.9μm、吸油量320mL/100g、富士シリシア化学(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、サンスフェアH-33(シリカ粒子、平均粒径3.0μm、吸油量400mL/100g、AGCエスアイテック(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、NipsilE-1011(シリカ粒子、平均粒径4.2μm、吸油量350mL/100g、東ソー・シリカ(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のサイリシア430に代えて、NipsilE-1009(シリカ粒子、平均粒径5.6μm、吸油量350mL/100g、東ソー・シリカ(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aを25質量%、SMP-220Aを75質量%としたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aを0質量%、SMP-220Aを100質量%としたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のDPE-6Aを100質量%、SMP-220Aを0質量%としたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
調製例1のSMP-220Aに代えて、SMP-550A(アクリロイル基含有ポリマー、二重結合当量550g/mol、共栄社化学(株)製)を用いたことを除いては、実施例1と同様の方法で防眩性積層体を製造した。
Claims (7)
- 少なくとも基材層及び防眩層を含む防眩性積層体であって、
前記防眩層が、少なくとも、多官能(メタ)アクリロイル基含有モノマー(A)、(メタ)アクリロイル基含有ポリマー(B)、光重合開始剤(C)、及びシリカ粒子(D)を含み、
前記シリカ粒子の平均粒径が1~7μmであり、かつ、前記シリカ粒子の吸油量が30~250mL/100gであり、
前記(A)成分と(B)成分の合計を100質量%とした際の(A)成分の割合が40~90質量%であり、(B)成分の割合が10~60質量%であり、
前記(B)成分の二重結合当量が400g/mol以下である、前記防眩性積層体。 - 前記(B)成分の重量平均分子量が5,000~100,000である、請求項1に記載の防眩性積層体。
- 前記(A)成分と(B)成分の合計を100質量%とした際の(D)成分の含有量が1~20質量%である、請求項1または2に記載の防眩性積層体。
- 前記基材層が芳香族ポリカーボネート層を含む、請求項1~3のいずれか1項に記載の防眩性積層体。
- 前記基材層がアクリル樹脂層と芳香族ポリカーボネート層の少なくとも2層を含む、請求項1~4のいずれか1項に記載の防眩性積層体。
- 前記防眩層上に光学干渉層を有する、請求項1~5のいずれか1項に記載の防眩性積層体。
- 前記基材層の、防眩層とは反対の面に粘着層を有する、請求項1~6のいずれか1項に記載の防眩性積層体。
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- 2023-08-24 KR KR1020247035257A patent/KR20250053778A/ko active Pending
- 2023-08-24 WO PCT/JP2023/030442 patent/WO2024048406A1/ja not_active Ceased
- 2023-08-24 CN CN202380052064.3A patent/CN119546987A/zh active Pending
- 2023-08-24 JP JP2024544175A patent/JPWO2024048406A1/ja active Pending
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| KR20250053778A (ko) | 2025-04-22 |
| JPWO2024048406A1 (ja) | 2024-03-07 |
| CN119546987A (zh) | 2025-02-28 |
| TW202417237A (zh) | 2024-05-01 |
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