WO2013180510A1 - 하드코팅 필름의 제조방법 - Google Patents
하드코팅 필름의 제조방법 Download PDFInfo
- Publication number
- WO2013180510A1 WO2013180510A1 PCT/KR2013/004805 KR2013004805W WO2013180510A1 WO 2013180510 A1 WO2013180510 A1 WO 2013180510A1 KR 2013004805 W KR2013004805 W KR 2013004805W WO 2013180510 A1 WO2013180510 A1 WO 2013180510A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hard coating
- hard
- hard coat
- coating composition
- coat film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- C—CHEMISTRY; METALLURGY
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- C09D7/61—Additives non-macromolecular inorganic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
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- 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
- C08F222/103—Esters of polyhydric alcohols or polyhydric phenols of trialcohols, e.g. trimethylolpropane tri(meth)acrylate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31928—Ester, halide or nitrile of addition polymer
Definitions
- the present invention relates to a method for producing a hard coat film. More specifically, the present invention relates to a method for producing a hard coating film of high hardness.
- Glass or tempered glass is generally used as a material having excellent mechanical properties in the display window or the front plate of the mobile device.
- the glass causes the mobile device to increase in weight due to its own weight and there is a problem of breakage due to external impact.
- Plastic resin is being researched as a substitute material for glass.
- Plastic resin films are lightweight and less prone to break, making them suitable for the trend toward lighter mobile devices.
- a film has been proposed in which a hard coat layer is coated on a support substrate to achieve a film having high hardness and wear resistance properties.
- a method of increasing the thickness of the hard coating filler may be considered.
- the surface hardness may be increased, but wrinkles or curls may be caused by hardening shrinkage of the hard coat layer. It is not easy to apply practically because it becomes easy to crack or peel off the hard coating layer at the same time as it grows.
- Korean Unexamined Patent Publication No. 2010-0041992 discloses a hard coating film composition excluding a monomer and using a binder resin including an ultraviolet curable polyurethane acrylate-based oligomer.
- the hard coat film disclosed above is not strong enough to replace the glass panel of the display with a pencil hardness of about 3H.
- the present invention provides a hard coating film having a high hardness, but less curling, warping or cracking.
- the manufacturing method of the hard coat film of the present invention it is possible to easily produce a high hardness hard coat film while reducing the occurrence of curl.
- the hard coating film obtained by the manufacturing method of the present invention exhibits high hardness, scratch resistance, and high transparency, and has excellent curling properties and less curl or crack, which is useful for mobile devices, display devices, front panels of various instrument panels, display parts, and the like. can do. [Specific contents to carry out invention]
- Irradiating ultraviolet light on the applied hard coating composition to simultaneously photocuring to form a hard coating layer.
- first and second are used to describe various components, and the terms are used only for the purpose of distinguishing one component from other components.
- each component when each component is referred to as being formed “on” or “on” of each component, it means that each component is directly formed on each component, or other components are each It can be formed additionally between the layer, the object, the substrate.
- Hard coating compositions comprising monomers for binders, inorganic fine particles, and photoinitiators containing from 6 to 6 functional acrylate monomers are applied to both sides of the support substrate.
- the support substrate to which the hard coating composition is applied can be used without particular limitation in the manufacturing method or material of the support substrate, such as a stretched film or a non-stretched film, as long as it is a commonly used transparent plastic resin. have.
- polyester such as polyethylene terephthalate (PET), cyclic olefin copolymer (cyclic olefin copolymer, COC), polyacrylate (polyacrylate, PAC), Polycarbonate (PC), polyethylene (PE), polymethylmethacrylate (PMMA), polyetheretherketon (PEEK), polyethylenenaphthalate (PEN), polyetherimide , PEI), polyimide (PI), triacetylcellulose (TAC) or MMA (methyl methacrylate).
- PET polyethylene terephthalate
- PAC cyclic olefin copolymer
- COC polyacrylate
- PC Polycarbonate
- PE polyethylene
- PMMA polymethylmethacrylate
- PEEK polyetheretherketon
- PEN polyethylenenaphthalate
- PEI polyetherimide
- PI polyimide
- TAC triacetylcellulose
- MMA methyl methacrylate
- the support substrate may be a single layer or a multilayer
- the supporting substrate is a substrate having a multilayer structure of polyethylene terephthalate (PET), a structure of two or more layers formed by coextrusion of polymethyl methacrylate (PMMA) / polycarbonate (PC). It can be a substrate.
- PET polyethylene terephthalate
- PMMA polymethyl methacrylate
- PC polycarbonate
- the support substrate may be a substrate including a copolymer of polymethyl methacrylate (PMMA) and polycarbonate (PC).
- PMMA polymethyl methacrylate
- PC polycarbonate
- the thickness of the support substrate is not particularly limited, but a support substrate having a thickness of about 30 to about 1,200 ⁇ , or about 50 to about 800 mm 3 can be used.
- the hard coating composition to be applied to both sides of the support substrate is a binder monomer, inorganic fine particles, comprising a 3 to 6 functional acrylate monomer, And photoinitiators.
- the acrylate-based means both acrylates and derivatives in which substituents are introduced into acrylates or methacrylates.
- the binder monomer includes a 3 to 6 functional acrylate monomer.
- the 3 to 6 functional acrylate monomers include trimethylolpropane triacrylate (TMPTA), trimethylolpropaneethoxy triacrylate (TMPEOTA), glycerin propoxylated triacrylate (GPTA), pentaerytri Tetraacrylate (PET A), or dipenta to nutriacrylate (DPHA).
- TMPTA trimethylolpropane triacrylate
- TMPEOTA trimethylolpropaneethoxy triacrylate
- GPTA glycerin propoxylated triacrylate
- PET A pentaerytri Tetraacrylate
- DPHA dipenta to nutriacrylate
- the 3 to 6 functional acrylate monomers may be used alone or in combination with each other.
- the binder monomer may further include 1 to 2 functional acrylate monomers.
- the 1 to 2 functional acrylate monomers are, for example, hydroxy ethyl acrylate (HEA), hydroxy ethyl methacrylate (HEMA), nucleic acid diol diacrylate (HDD A), or tripropylene glycol di Acrylate (TPGDA), ethylene glycol diacrylate (EGDA), etc. are mentioned.
- the 1 to 2 functional acrylate monomers may also be used alone or in combination with each other.
- the binder monomer may be included in an amount of about 35 to about 85 parts by weight, or about 45 to about 80 parts by weight, based on 100 parts by weight of the hard coating composition.
- the monomer for the binder is in the above range can exhibit a high hardness and can form a hard coat film with less curl or cracks with excellent processability.
- the binder monomer when the binder monomer further comprises a 1 to 2 functional acrylate monomer, the 1 to 2 functional acrylate monomer and the 3 to 6 functional acrylate monomer
- the content ratio of is not particularly limited, but in one embodiment of the present invention
- the 1 to 2 functional acrylate monomer and the 3 to 6 functional acrylate monomer may be about 1:99 to about 50:50, or about 10:90 to about 50:50, or about 20:80 To about 40:60 by weight.
- the 1 to 2 functional acrylate monomer and 3 to 6 functional acrylate monomer when including the 1 to 2 functional acrylate monomer and 3 to 6 functional acrylate monomer in the weight ratio, it is possible to give high hardness and flexibility without deterioration of other physical properties such as curling properties and light resistance.
- the binder monomer may further include a photocurable elastomer.
- the photocurable elastomeric polymer refers to a polymer material exhibiting elasticity, including a functional group capable of crosslinking polymerization by ultraviolet irradiation.
- the photocurable elastomer is at least about 15%, for example about 15 to about 200%, or about 20 to about 200%, or about 20 to about 20% as measured by ASTM D638. It can have an elongation of about 150%.
- the hard coating composition of the present invention further includes a photocurable elastomer
- the photocurable elastomer is cross-polymerized with the 3 to 6 functional acrylate monomer to form a hard coat layer after curing to form a hard coat layer. Flexibility and impact resistance can be imparted.
- the content ratio of the photocurable elastomer and the 3 to 6 functional acrylate monomer is not particularly limited, but according to an embodiment of the present invention, The photocurable elastomer and the 3 to 6 functional acrylate monomer may be included in a weight ratio of about 5:95 to about 20:80.
- the weight ratio includes the 3 to 6 functional acrylate monomer and the photocurable elastomer, it provides high hardness and flexibility without deterioration of other physical properties such as curling properties and light resistance, and particularly prevents damage due to external lamination. It is possible to secure excellent layer resistance.
- the photocurable elastomer has a weight average molecular weight of about 1,000 to about 600,000 g / mol, or about 10,000 to about Polymers or oligomers in the range of 600,000 g / mol.
- the photocurable elastomer may be, for example, one or more selected from the group consisting of polycaprolactone, urethane acrylate-based polymers, and polyrotasein.
- polycaprolactone is formed by ring-opening polymerization of caprolactone and has excellent physical properties such as flexibility, layer resistance, and durability.
- the urethane acrylate polymer has excellent elasticity and durability, including urethane bonds.
- the polyrotaxane refers to a compound in which a dumbbell shaped molecule and a cyclic compound are structurally fitted.
- the dumbbell-shaped molecule includes a constant linear molecule and a blocking group disposed at both ends of the linear molecule, the linear molecule penetrates inside the cyclic compound, and the cyclic compound can move along the linear molecule. And the departure is prevented by the blocker.
- a cyclic compound in which a lactone compound having a (meth) acrylate compound introduced therein is bound; Linear molecules penetrating the cyclic compound; And a rotasein compound disposed at both ends of the linear molecule and including a blocking group to prevent the cyclic compound from being separated.
- the cyclic compound may be used without any limitation as long as it has a size enough to penetrate or surround the linear molecule, and may include a hydroxyl group, an amino group, a carboxyl group, a thiol group, or an aldehyde group, which may be reacted with another polymer or compound. It may also contain a functional group. Specific examples of such cyclic compounds include ⁇ -cyclodextrin and ⁇ -cyclodextrin, ⁇ -cyclotextrin, or a combination thereof.
- a compound having a straight chain form having a molecular weight of a predetermined or more may be used without great limitation, and a polyalkylene compound or a polylactone compound may be used.
- a polyoxyalkylene compound or a carbon number 3 containing an oxyalkylene repeating unit having 1 to 8 carbon atoms The polylactone compound which has the lactone repeating unit of 10 can be used.
- the blocking group may be appropriately adjusted according to the properties of the rotacein compound to be produced, for example, one selected from the group consisting of dinitrophenyl group, cyclodextrin group, ammantane group, triyl group, fluorescein group and pyrene group or Two or more kinds can be used.
- Such polyrotaxane compounds may have excellent scratch resistance and may exhibit self-healing ability when scratches or external damages occur.
- the hard coat composition contains inorganic fine particles.
- the inorganic fine particles of the inorganic particles having a nano-scale particle size for example, about 100 nm or less, or about 10 to about 100 nm, or about 10 to about 50 nm nanoparticles can be used.
- the inorganic fine particles for example, silica fine particles, aluminum oxide particles, titanium oxide particles, zinc oxide particles, or the like can be used.
- the hardness of the hard coat film can be further improved.
- the inorganic fine particles may be included in about 10 to about 60 parts by weight, or about 20 to about 50 parts by weight based on 100 parts by weight of the hard coating composition.
- the inorganic fine particles may be included in the above range, the effect of improving the hardness of the hard coat film according to the addition of the inorganic fine particles can be achieved within the range of not lowering the physical properties of the hard coating composition.
- the hard coat composition includes a photoinitiator.
- the photoinitiator is 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2-methyl-1-propane is methylbenzoylformate, ⁇ , ⁇ -dimethoxy- ⁇ -phenylacetophenone, 2-benzoyl-2- (dimethylamino ) -1- [4- (4-morpholinyl) phenyl] -1-butanone, 2-methyl-1- [4- (methylthio) phenyl] -2- (4-morpholinyl) -1 -Propanone diphenyl (2,4,6-trimethylbenzoyl) -phosphine oxide, or bis (2,4,6-trimethylbenzoyl)-phenylphosphine oxide, and the like, but are not limited thereto.
- Also currently Commercially available products include Irgacure 184, Irgacure 500, Irgacure 651, Irgacure 369, Irgacyire 907, Darocur 1173, Darocur MBF, Irgacure 819, Darocur TPO, Irgacure 907, and Esacure KIP 100F. These photoinitiators can be used individually or in mixture of 2 or more types different from each other.
- the photoinitiator may be included in about 0.5 to about 10 parts by weight, or about 1 to about 5 parts by weight based on 100 parts by weight of the hard coating composition.
- the photoinitiator is in the above range, the crosslinked photopolymerization can be achieved without lowering the physical properties of the hard coat film.
- the hard coating composition in addition to the above-described components, additives commonly used in the art to which the present invention belongs, such as surfactants, anti-yellowing agents, leveling agents, antifouling agents It may further comprise.
- the content can be variously adjusted within the range that does not lower the physical properties of the hard coating composition according to the present invention, it is not particularly limited.
- the hard coating composition may include a surfactant as an additive, and the surfactant may include 1 to 2 functional fluorine acrylates, fluorine surfactants or silicone surfactants. You can be the best.
- a yellowing inhibitor may be included as the additive, and the yellowing inhibitor may include a benzophenone compound or a benzotriazole compound.
- the hard coating composition in the manufacturing method of the hard coating film of the present invention, can be used in a solvent-free form, it controls the viscosity and fluidity of the composition during coating and the coating property of the composition to the support substrate It may optionally further include an organic solvent to increase the.
- organic solvent examples include methanol, ethanol, isopropyl alcohol, alcohol solvents such as butanol, 2-methoxy ethanol, 2-ethoxyethanol, alkoxy alcohol solvents such as 1-methoxy-2-propanol, acetone, Ketone solvents such as methyl ketone, methyl isobutyl ketone, methyl propyl ketone, cyclohexanone, propylene glycol monopropyl ether, propylene glycol monomethyl ether, In ethylene glycol monoethyl hotel, the ethylene glycol monopropyl ether to ethylene in the ethylene glycol monobutyl Termini, diethylene glycol monomethyl Terminus: diethyl glycol monoethyl the hotel, the butyl glycol monopropyl the de Terre: diethyl Ether solvents such as glycol monobutyl ether, diethylene glycol-2-ethyl nucleus ether, aromatic solvents such as benzene, toluene,
- the content of the organic solvent may be about 70:30 to about 99: 1 by weight of the hard coat composition: organic solvent. It may be included to be.
- the hard coating composition of the present invention contains a high content of solids, a high viscosity composition is obtained, thereby enabling thick coating to form a high thickness, for example, a hard coating layer of 50 or more. have.
- the viscosity of the hard coating composition is not particularly limited as long as it has a range of appropriate fluidity and applicability, but may exhibit high viscosity due to its relatively high solid content.
- the hard coating composition of the present invention has a viscosity of about 100 to about 1,200 cps, or about 100 to about 1,200 cps, or about 150 to about 1,200 cps, or about 300 to about 1,200 cps at a temperature of 25 ° C. It may have a viscosity of.
- a hard coating composition comprising the aforementioned components is applied to both sides of the support substrate.
- the hard coating composition may be sequentially applied to the front and rear surfaces of the support substrate, or simultaneously applied to both sides of the support substrate.
- the method of applying the hard coating composition is not particularly limited as long as it can be used in the technical field to which the present technology belongs, for example, bar coating method, knife coating method, coating method, blade coating method, die coating method , Micro gravure coating, comma coating, slot die coating, lip coating, or solution casting.
- the hard coating composition may have a thickness of about 50 to 300, or about 50 to about 150 pm, or about 70 to about 50 It can apply to both surfaces of the said support base material so that it may become 100. According to the method of manufacturing a hard coat film of the present invention, even if the hard coat layer is formed to a high thickness as described above, it is possible to manufacture a hard coat film of high hardness without curling or cracking.
- the stabilizing step may be performed, for example, by treating the support substrate to which the hard coating composition is applied at a constant temperature. As a result, the coated surface may be stabilized by planarizing the coated surface and volatilizing the volatile components included in the hard coating composition.
- the hard coat layer is formed by irradiating UV light on the applied hard coat composition at the same time.
- photocuring at the same time means that photocuring proceeds at about the same or similar speed as the degree of curing of the hard coating composition on both sides, and not only substantially simultaneously,
- the hard coating composition of cotton is 100% of the time from the start of curing until the curing is completed, it shows some difference, for example, the time difference within 20%. This includes cases where it is in progress.
- the acrylate-based binder monomer may cause a curing shrinkage or curl phenomenon in which the supporting substrate is rolled up together with the coating layer due to shrinkage due to curing in the photocuring step.
- the curl phenomenon refers to a phenomenon in which corners or the like are curved or curled when laid out on a flat surface of a film of flat structure, which is a phenomenon that occurs when the acrylate shrinks during photocuring by ultraviolet rays.
- a hard coating film to be used as a cover of a mobile communication terminal such as a smartphone or a tablet PC
- the thickness of the hard coating layer must be increased to a predetermined thickness or more, for example, 50, 70, or 100 or more.
- a process of planarizing the supporting substrate may be additionally performed, but since the crack occurs in the hard coating layer during the planarization process, it is not preferable. Therefore, it is not easy to manufacture a hard coating film of high hardness to the extent that glass can be replaced without deteriorating film properties.
- the manufacturing method of the hard coating film of the present invention by curing the hard coating composition coated on both sides of the support substrate with ultraviolet light at the same time to harden the hard coating composition on both sides to prevent the phenomenon that the hard coating film is dried and high hardness It can be produced a hard coating film showing excellent physical and optical properties without showing curl or cracks.
- the irradiation amount of ultraviolet light may be, for example, about 20 to about 600 mJ / cm 2 or about 50 to about 500 mJ / cm 2 .
- the ultraviolet light source is not particularly limited as long as it can be used in the art to which the present technology belongs, and for example, a high pressure mercury lamp, a metal halide lamp, a black light fluorescent lamp, or the like can be used. Irradiation for about 30 seconds to about 15 minutes, or about 1 minute to about 10 minutes with the above dose may be carried out to photocuring.
- the ratio of the thickness of the support substrate and the hard coating layer formed on one surface of the support substrate is about 1: 0.5 to about 1: 2, or about 1: 0.5 to about 1: 1.5 days Can be.
- the ratio of the thickness of the support base material and the hard coat layer is in the above range, it is possible to form a hard coat film exhibiting high hardness while generating less curl or cracks.
- the hard coat film obtained by the production method of the present invention exhibits excellent high hardness, scratch resistance, high transparency, durability, light resistance, light transmittance and the like, and can be usefully used in various fields.
- the hard coat film obtained by the production method of the present invention the pencil hardness at 1kg load may be 7H or more, or 8H or more, or 9H or more.
- the steel wool (# 0000) is installed in the friction tester, if the reciprocating 400 times with a load of 500g may occur less than two scratches.
- the hard coat film obtained by the production method of the present invention may have a light transmittance of 91.0% or more or 92.0% or more and haze 1.0% or less, or 0.5% or less, or 0.4% or less.
- the hard coat film obtained according to the method of manufacturing a hard coat film of the present invention when exposed to a temperature more than 70 hours at a temperature of 50 ° C or more and 80% or more humidity, when placed on a flat surface, each corner of the hard coating film
- the maximum distance of the distance from one side plane may be about 1.0 mm or less, or about 6 mm or less, or about 3 mm or less.
- the maximum of the distance of each corner or one side of the hard-coating film spaced in the plane may be about 1.0 mm or less, or about 0.6 mm or less, or about 0.3 mm or less.
- the hard coat film obtained by the manufacturing method of the present invention may have an initial color b value of 1.0 or less.
- the difference between the initial color b value and the color b value after exposure to the ultraviolet lamp in the UVB wavelength region for 72 hours or more may be 0.5 or less, or 4 or less.
- Such a hard coating film obtained by the manufacturing method of the present invention can be utilized in various fields, for example, to replace the cover glass of a mobile communication terminal, a touch panel of a smartphone or a tablet PC, and various displays. Can be used as
- the weight average molecular weight of the obtained polyrotasein was 600,000 g / mol, and elongation measured by ASTM D638 was 20%.
- Example 1 The weight average molecular weight of the obtained polyrotasein was 600,000 g / mol, and elongation measured by ASTM D638 was 20%.
- the hard coating composition was applied to both sides of the PET support substrate of 15cm X 20cm, thickness 188 / m by a bar coating method.
- the hard coating layer was formed by passing a support substrate coated on both surfaces of the hard coating composition through a metal halide lamp having a wavelength of 290-320 nm through an ultraviolet irradiation device installed above and below the support substrate.
- Hydroxyethyl acrylate (HEA) 2g, 20-30nm particle size of nano silica is about 40 wt 0/0
- the coating composition was prepared.
- Example 3 The hard coating composition was applied to both sides of a PC / PMMA coextrusion support substrate having a thickness of 15 cm X 20 cm and a thickness of 180; Subsequent processes were the same as in Example 1 to prepare a hard coat film.
- Example 3
- Particle diameter of 20-30nm nano silica is 40 parts by weight 0/0 dispersed silica-hex the dipentaerythritol EPO Li acrylate (DPHA) complex 9g (silica 3.6g, DPHA 5.4g), a poly interceptor of Preparation 1 lg , 0.2 g of a photoinitiator (trade name: Darocur TPO), O.lg, a benzotriazole anti-yellowing system (trade name: Tinuvin 400), and 0.05 g of a fluorine-based surfactant (trade name: FC4430) were mixed to prepare a hard coating composition. Subsequent processes were the same as in Example 1 to prepare a hard coat film.
- Example 5 Example 5
- Urethane acrylate polymer (trade name: UA200PA, Shinnakamura Chemical, weight average molecular weight 2,600 g / mol, elongation at 170% according to ASTM D638) was used instead of polyrotasein lg of Preparation Example 1, except that lg was used.
- UA200PA Shinnakamura Chemical
- lg weight average molecular weight 2,600 g / mol, elongation at 170% according to ASTM D638
- the hardness of the groovelessness was confirmed after reciprocating three times with a load of 1.0 kg according to the measurement standard JIS K5400 using a pencil hardness tester.
- the number of grooves was evaluated after reciprocating 400 times with a load of 0.5 kg. O for 2 or less grooves, ⁇ for 2 or more grooves and less than 5 grooves, and X for 5 or more grooves.
- Each hard coating film was cut into 10 cm ⁇ 10 cm and stored in a chamber at a temperature of 85 ° C. and a humidity of 85% for 72 hours, and the maximum value of the distance at which one side of each corner was spaced from the plane was measured when placed on a plane.
- Each hard-coating film was wound into a cylindrical manteltel having a diameter of 3 cm, and then cracks were determined to determine whether cracks were generated, and the cracks were evaluated as OK.
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Abstract
Description
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Priority Applications (5)
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| JP2015514911A JP6194354B2 (ja) | 2012-05-31 | 2013-05-31 | ハードコーティングフィルムの製造方法 |
| US14/404,184 US9701862B2 (en) | 2012-05-31 | 2013-05-31 | Method of preparing hard coating film |
| EP13798019.9A EP2840110B1 (en) | 2012-05-31 | 2013-05-31 | Method for manufacturing hard coating film |
| CN201910592053.XA CN110452405B (zh) | 2012-05-31 | 2013-05-31 | 制备硬涂膜的方法 |
| CN201380040412.1A CN104508023A (zh) | 2012-05-31 | 2013-05-31 | 制备硬涂膜的方法 |
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| KR1020130062098A KR101451848B1 (ko) | 2012-05-31 | 2013-05-30 | 하드코팅 필름의 제조방법 |
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| PCT/KR2013/004804 Ceased WO2013180509A1 (ko) | 2012-05-31 | 2013-05-31 | 하드코팅 필름 |
| PCT/KR2013/004805 Ceased WO2013180510A1 (ko) | 2012-05-31 | 2013-05-31 | 하드코팅 필름의 제조방법 |
| PCT/KR2013/004809 Ceased WO2013180512A1 (ko) | 2012-05-31 | 2013-05-31 | 하드코팅 조성물 |
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| PCT/KR2013/004804 Ceased WO2013180509A1 (ko) | 2012-05-31 | 2013-05-31 | 하드코팅 필름 |
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| US (5) | US10294387B2 (ko) |
| EP (4) | EP2840109A4 (ko) |
| JP (4) | JP6280918B2 (ko) |
| KR (4) | KR101451848B1 (ko) |
| CN (5) | CN104508020B (ko) |
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| JP2018530631A (ja) * | 2015-08-03 | 2018-10-18 | エルジー・ケム・リミテッド | フレキシブルプラスチックフィルム |
| US10626292B2 (en) | 2015-08-03 | 2020-04-21 | Lg Chem, Ltd. | Coating composition for flexible plastic film |
| US11168191B2 (en) | 2015-08-03 | 2021-11-09 | Lg Chem, Ltd. | Flexible plastic film |
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| ATE72450T1 (de) | 1986-12-15 | 1992-02-15 | Siemens Nixdorf Inf Syst | Verfahren zur herstellung von prepregs und deren verwendung. |
| JP2698592B2 (ja) | 1988-01-28 | 1998-01-19 | 株式会社日立製作所 | 誘導電動機の固定子およびその製造方法 |
| JP2698591B2 (ja) | 1988-01-28 | 1998-01-19 | 株式会社日立製作所 | 誘導電動機の固定子およびその製造方法 |
| TWI491618B (zh) | 2012-05-25 | 2015-07-11 | Lg Chemical Ltd | 聚輪烷化合物,光可固化塗料組成物,以及塗膜 |
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