WO2011162499A2 - 아크릴계 공중합체 및 이를 포함하는 광학필름 - Google Patents
아크릴계 공중합체 및 이를 포함하는 광학필름 Download PDFInfo
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- WO2011162499A2 WO2011162499A2 PCT/KR2011/004341 KR2011004341W WO2011162499A2 WO 2011162499 A2 WO2011162499 A2 WO 2011162499A2 KR 2011004341 W KR2011004341 W KR 2011004341W WO 2011162499 A2 WO2011162499 A2 WO 2011162499A2
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F22/00—Homopolymers and 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
- C08F22/10—Esters
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
-
- 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
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1806—C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate
-
- 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
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
Definitions
- the present invention comprises an acrylic copolymer resin having excellent heat resistance and strength, a resin composition comprising the acrylic copolymer resin, an optical film having excellent heat resistance, strength and optical transparency including the resin composition, and the optical film as a protective film. It relates to a polarizing plate and a liquid crystal display device comprising the polarizing plate.
- Twisted nematic (TN), super twisted nematic (STN) Various modes of liquid crystal display using vertical alignment (VA), in-plane switching (IPS) liquid crystal cells, and the like have been developed.
- VA vertical alignment
- IPS in-plane switching
- a polarizing plate generally has a structure in which a polyvinyl alcohol (PVA) -based molecular chain is oriented in a predetermined direction and includes an iodine compound or a dichroic polarizing material, or a dehydration reaction of a polyvinyl alcohol film or a polyvinyl chloride (PVC) film
- a polarizer having a polyene structure formed by a dehydrochloric acid reaction of the present invention has a structure in which a triacetyl cellulose film (TAC film) as a protective film is laminated with an aqueous adhesive made of a polyvinyl alcohol-based aqueous solution. .
- TAC film triacetyl cellulose film
- the polyvinyl alcohol film used as a polarizer and the TAC film used as a protective film for polarizers do not have sufficient heat resistance and moisture resistance. Therefore, when the polarizing plate made of the above films is used for a long time in an atmosphere of high temperature or high humidity, the polarization degree is lowered, and the polarizer and the protective film are separated or the optical properties are lowered. As described above, the polarizing plates that have been put to practical use thus far lack reliability of heat resistance and moisture resistance.
- the TAC film has a great change in the in-plane retardation (Rin) and the thickness direction retardation (Rth) in the existing in accordance with the ambient temperature / humidity environment changes, especially the change in the retardation of the incident light in the oblique direction.
- a polarizing plate including a TAC film having such characteristics as a protective film is applied to a liquid crystal display device, there is a problem in that the viewing angle characteristic changes according to a change in the ambient temperature / humidity environment, thereby degrading image quality.
- the TAC film has a large dimensional change rate according to the change of the ambient temperature / humidity environment, and the photoelastic coefficient value is also relatively large, and the image quality is degraded due to the change of the phase difference locally after the durability evaluation in the heat and moisture resistant environment.
- Methacrylic (methacryl) resin is well known as a material for compensating for the various disadvantages of the TAC film.
- methacryl-based resins are brittle or cracked, which is a problem in the carrier property in the production of polarizers and is insufficient in productivity.
- Japanese Patent Laid-Open No. 2006-284881 Japanese Patent Laid-Open No. 2006-284882
- a method of co-extrusion and laminating other resins Japanese Patent Laid-Open No. 2006-243681, Japanese Patent Laid-Open No. 2006-215463, Japanese Patent Laid-Open 2006-215465, and Japanese Patent Laid-Open No. 2007-017555
- these methods have a problem in that the original heat resistance and transparency of the acrylic resin are not sufficiently reflected or have a complicated laminate structure.
- an object of the present invention is to provide an acrylic copolymer resin having excellent heat resistance and strength while maintaining transparency.
- Still another object of the present invention is to provide a resin composition
- a resin composition comprising the acrylic copolymer resin and a resin containing an aromatic ring and / or an aliphatic ring in the main chain.
- Still another object of the present invention is to provide an optical film having excellent heat resistance, strength and optical transparency including the resin composition, a polarizing plate including the optical film as a protective film, and a liquid crystal display device including the polarizing plate.
- the present invention has been made to solve the above problems of the prior art,
- alkyl (meth) acrylate monomers except tert-butyl (meth) acrylate monomers; 2) (meth) acrylate monomers including aliphatic rings and / or aromatic rings; And 3) tert-butyl (meth) acrylate monomers to provide a polymerized acrylic copolymer.
- the resin composition which mixed the said acryl-type copolymer of this invention and resin containing an aromatic ring and / or an aliphatic ring in the main chain is provided.
- optical film containing the said resin composition of this invention is provided.
- the present invention includes a polarizer and a protective film provided on at least one surface of the polarizer, the protective film provides a polarizing plate which is the optical film of the present invention.
- the present invention provides a liquid crystal display device including the polarizing plate.
- the acrylic copolymer according to the present invention is excellent in heat resistance and strength while maintaining transparency.
- the optical film including the resin composition containing the acrylic copolymer is excellent in transparency, heat resistance and strength, and excellent in workability, adhesiveness, retardation characteristics and durability.
- FIG. 1 illustrates an example in which an optical film according to the present invention is applied to a liquid crystal display as a protective film.
- alkyl (meth) acrylate monomers except tert- butyl (meth) acrylate monomers; 2) (meth) acrylate monomers including aliphatic rings and / or aromatic rings; And 3) a tert-butyl (meth) acrylate monomer.
- the acrylic copolymer of the present invention includes a (meth) acrylate monomer and two or more alkyl (meth) acrylate monomers containing an aliphatic ring and / or an aromatic ring, wherein the two or more alkyl At least one of the (meth) acrylate monomers is essentially a tert-butyl (meth) acrylate monomer.
- the copolymer resin containing a monomer means that the monomer is polymerized and included as a repeating unit in the copolymer resin.
- (meth) acrylate type monomer includes a “acrylate type monomer” or a “methacrylate type monomer.”
- the acrylic copolymer may be a block copolymer or a random copolymer, but the copolymer form is not limited thereto.
- the alkyl (meth) acrylate monomers are alkylacrylate monomers and alkylmethacrylate monomers. It means all. It is preferable that the alkyl group of the said alkyl (meth) acrylate type monomer is C1-C10, It is more preferable that it is C1-C4, It is more preferable that it is a methyl group or an ethyl group.
- the alkyl (meth) acrylate monomer is more preferably methyl methacrylate, but is not limited thereto.
- the content of the alkyl (meth) acrylate monomers excluding the tert-butyl (meth) acrylate monomer is preferably 50 to 98.9% by weight, more preferably 50 to 90% by weight. Do. When the content of the alkyl (meth) acrylate monomers excluding the tert-butyl (meth) acrylate monomer is within the above range, excellent transparency and heat resistance may be maintained.
- the (meth) acrylate monomer containing an aliphatic ring and / or an aromatic ring serves to improve the heat resistance of the acrylic copolymer resin according to the present invention, for example, cycloalkyl (meth ) Acrylic monomers or aryl (meth) acrylate monomers.
- the cycloalkyl group of the cycloalkyl (meth) acrylate monomer is preferably 4 to 12 carbon atoms, more preferably 5 to 8 carbon atoms, and most preferably a cyclohexyl group.
- the aryl group of the aryl (meth) acrylate monomer is preferably 6 to 12 carbon atoms, most preferably a phenyl group.
- (meth) acrylate monomers including the aliphatic ring and / or the aromatic ring include cyclopentyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, cyclohexyl acrylate and 2-phenoxyethyl acryl.
- cyclohexyl methacrylate or phenyl methacrylate are preferred, but not limited thereto.
- the content of the (meth) acrylate monomer containing the aliphatic ring and / or the aromatic ring is 1 to 49.9. It is preferable that it is weight%, and it is more preferable that it is 1-30 weight%.
- heat resistance can be sufficiently secured.
- the tert-butyl (meth) acrylate monomer serves to make the copolymer of the present invention exhibit higher heat resistance and strength.
- the tert-butyl (meth) acrylate monomer is preferably included in 0.1 to 10% by weight.
- the acrylic copolymer resin is a (meth) acrylate monomer 1 to 49.9 containing an aliphatic ring and / or an aromatic ring Wt% and 50.1 to 99 wt% of the alkyl (meth) acrylate monomers, wherein 0.1 to 10 wt% of the alkyl (meth) acrylate monomers are tert-butyl (meth) acrylate monomers.
- the weight average molecular weight of the acrylic copolymer resin is preferably 50,000 to 150,000 in terms of heat resistance, processability and productivity.
- Glass transition temperature (Tg) of the said acrylic copolymer resin becomes like this. Preferably it is 120 degreeC or more, More preferably, it is 130 degreeC or more.
- the glass transition temperature of the acrylic copolymer resin is not particularly limited, but may be 200 ° C. or less.
- the second aspect of the present invention relates to a resin composition
- a resin composition comprising a resin containing an aromatic ring and / or an aliphatic ring in the acrylic copolymer and the main chain of the first aspect of the present invention.
- the resin composition as the resin containing an aromatic ring and / or an aliphatic ring in the main chain, for example, polycarbonate resin, polyarylate resin, polynaphthalene resin, polynorbornene resin, or the like can be used. Although it is more preferable that it is a carbonate resin, it is not limited only to this.
- the said resin composition contains 90-99.9 weight% of acrylic copolymer resins, and 0.1-10 weight% of resin containing an aromatic ring and / or an aliphatic ring in a principal chain with respect to the composition total weight, and acrylic copolymer resin More preferably, 95 to 99.5% by weight and 0.5 to 5% by weight of a resin containing an aromatic ring and / or an aliphatic ring in the main chain thereof.
- the resin composition may be prepared by blending the acrylic copolymer resin and a resin containing an aromatic ring and / or an aliphatic ring in the main chain according to a method well known in the art, such as compounding method, and may include a colorant, a flame retardant, a reinforcing agent, Additives well known in the art, such as fillers, UV stabilizers, antioxidants, and the like, may be included in an amount of 0.001 to 30% by weight based on the total weight of the resin composition.
- the glass transition temperature of the said resin composition is not specifically limited, It may be 200 degrees C or less.
- the weight average molecular weights of the said resin composition are 50,000-150,000 from a viewpoint of heat resistance, sufficient workability, productivity, etc.
- a third aspect of the present invention relates to an optical film containing the resin composition.
- the optical film according to the present invention may have different retardation values depending on the content of the resin containing an aromatic ring and / or an aliphatic ring in the main chain, and thus may be used as a polarizer protective film.
- the plane direction retardation value R in of the optical film It may be 0nm to 10nm, preferably 0nm to 5nm, more preferably about 0nm, the thickness direction retardation value (R th ) may be -5nm to 5nm, preferably 0nm to 5nm, more Preferably about 0 nm.
- the optical film according to the present invention can be used as a polarizer protective film.
- FIG. 1 An example in which the optical film according to the present invention is used as a protective film is shown in FIG. 1.
- both of the protective films provided on both sides of the two polarizing plates are optical films according to the present invention, and at least one of the protective films may be a conventional protective film.
- the optical film may be prepared into a film according to a method well known in the art such as a solution caster method or an extrusion method, of which the solution caster method is preferred.
- the stretching step may be performed in the longitudinal direction (MD) stretching or in the transverse direction (TD) stretching, or both.
- MD longitudinal direction
- TD transverse direction
- stretching both a longitudinal direction and a lateral direction after extending
- Stretching can be done in one step or stretched in multiple steps.
- stretching in a longitudinal direction extending
- the starting angle of the tenter is 10 degrees or less in total, suppressing the bowing phenomenon which arises at the time of a lateral stretch, and controls the angle of an optical axis regularly.
- the same boeing suppression effect can also be obtained by making transverse stretching into multiple stages.
- the stretching may be performed at a temperature of (Tg-20 ° C) to (Tg + 30 ° C) when the glass transition temperature of the resin composition is Tg.
- the glass transition temperature refers to a region from the temperature at which the storage modulus of the resin composition begins to decrease, and thus the loss modulus becomes larger than the storage modulus, at which the orientation of the polymer chain is relaxed and lost. Glass transition temperatures can be measured by differential scanning calorimetry (DSC). The temperature at the time of the stretching step is more preferably the glass transition temperature of the film.
- the drawing speed is preferably in the range of 1 to 100 mm / min in the case of a universal drawing machine (Zwick Z010) and in the range of 0.1 to 2 m / min in the case of a pilot drawing machine. It is preferable to stretch the film by applying an elongation of 5 to 300%.
- the optical film according to the present invention can be uniaxially or biaxially stretched by the above-described method, thereby adjusting the phase difference characteristics.
- the optical film manufactured as described above may have a plane direction retardation value R in which the plane direction retardation value R in is 0 nm to 10 nm, preferably 0 nm to 5 nm, and more preferably about 0 nm.
- the thickness direction retardation value R th represented by Equation 2 may be -5 nm to 5 nm, preferably 0 nm to 5 nm, and more preferably about 0 nm.
- the optical film according to the present invention can be used as a polarizer protective film.
- n x is a refractive index of the direction of the largest refractive index in the plane direction of the film
- n y is a refractive index in the vertical direction in the n x direction in the plane direction of the film
- n z is the refractive index in the thickness direction
- d is the thickness of the film.
- the optical film according to the present invention is characterized in that the photoelastic coefficient is smaller than that of the conventional TAC film.
- the photoelastic coefficient of the optical film according to the present invention may be 10 or less, preferably 8 or less, more preferably 0.1 or more and 7 or less, and more preferably 0.5 or more and 6 or less.
- the brittleness of the optical film according to the present invention can be measured by dropping a steel sphere having a particle diameter of 15.9 mm and a weight of 16.3 g on a test film to measure a height at which a hole is formed in the film, and the optical film according to the present invention has the height Is preferably at least 600 mm, more preferably at least 650 mm.
- the haze value of the optical film which concerns on this invention is 1% or less, It is more preferable that it is 0.5% or less, It is further more preferable that it is 0.1% or less.
- the fourth aspect of the present invention includes a polarizer and a protective film provided on at least one surface of the polarizer, the protective film relates to a polarizing plate which is the optical film of the present invention.
- a fifth aspect of the present invention relates to a liquid crystal display device including the polarizing plate.
- the liquid crystal display is a VA (vertical alignment) mode type or a TN mode type liquid crystal display.
- liquid crystal display including the polarizing plate according to the present invention will be described in more detail as follows.
- a liquid crystal display device comprising a liquid crystal cell and a first polarizing plate and a second polarizing plate respectively provided on both surfaces of the liquid crystal cell, wherein the first polarizing plate and the second polarizing plate have a protective film which is an optical film of the present invention on one side or both sides. It may include.
- the other surface may be provided with a protective film known in the art.
- the polarizer a film made of polyvinyl alcohol (PVA) containing iodine or dichroic dye may be used.
- PVA polyvinyl alcohol
- the polarizer may be prepared by dyeing iodine or dichroic dye on the PVA film, but a method of manufacturing the same is not particularly limited.
- the polarizer means a state not including a protective film
- the polarizing plate means a state including a polarizer and a protective film.
- the protective film and the polarizer may be laminated by a method known in the art.
- the lamination of the protective film and the polarizer may be made by an adhesive method using an adhesive. That is, first, an adhesive is coated on the surface of a PVA film which is a protective film or a polarizer (polarizing film) by using a roll coater, gravure coater, bar coater, knife coater or capillary coater. Before the adhesive is completely dried, the protective film and the polarizer are laminated by heating or pressing at room temperature with a lamination roll. In the case of using a hot melt adhesive, a heat press roll should be used.
- Adhesives that can be used when laminating the protective film and the polarizer include one-component or two-component PVA adhesives, polyurethane adhesives, epoxy adhesives, styrene butadiene rubber (SBR) adhesives, or hot melt adhesives, but are not limited thereto. Do not.
- PVA adhesives polyurethane adhesives
- polyurethane adhesives it is preferable to use the polyurethane adhesive manufactured using the aliphatic isocyanate type compound which does not yellow by light.
- a solution-type adhesive diluted with an acetate solvent, a ketone solvent, an ether solvent, or an aromatic solvent may be used.
- adhesive viscosity is a low viscosity type of 5,000 cps or less. It is preferable that the adhesives have excellent storage stability and have a light transmittance of 90% or more at 400 to 800 nm.
- a tackifier can also be used if it can exert sufficient adhesive force. It is preferable that the adhesive is sufficiently cured by heat or ultraviolet rays after lamination, and thus the mechanical strength is improved to the level of the adhesive. The adhesive strength is also large so that the adhesive does not peel off without breaking of either film to which the adhesive is attached. It is preferable.
- pressure-sensitive adhesives that can be used include natural rubber, synthetic rubber or elastomer having excellent optical transparency, vinyl chloride / vinyl acetate copolymer, polyvinyl alkyl ether, polyacrylate or modified polyolefin-based pressure-sensitive adhesive, and a curing type in which a curing agent such as isocyanate is added thereto.
- An adhesive is mentioned.
- the present invention provides a liquid crystal display including the integrated polarizer.
- the physical property evaluation method in the Example of this invention is as follows.
- Weight average molecular weight (Mw) The prepared resin was dissolved in tetrahydrofuran and measured by gel osmosis chromatography (GPC).
- Tg glass transition temperature: Measured using a DSC (Differential Scanning Calorimeter) from TA Instrument.
- Haze value (transparency): The haze value was measured using HAZEMETER HM-150 of Murakami color Research Laboratory.
- An acrylic copolymer resin was prepared from 89 parts by weight of methyl methacrylate, 10 parts by weight of phenyl methacrylate, and 1 part by weight of tert-butyl methacrylate (tBMA).
- tBMA tert-butyl methacrylate
- the resin with glass transition temperature of 122 degreeC and molecular weight 11.5 million was obtained.
- 98 parts by weight of this resin was prepared by compounding with 2 parts by weight of polycarbonate to prepare a final resin composition. After producing this resin composition into the film by the solution casting method, extending
- An acrylic copolymer resin was prepared from 87 parts by weight of methyl methacrylate, 10 parts by weight of phenyl methacrylate, and 3 parts by weight of tert-butyl methacrylate.
- the resin of glass transition temperature 128 degreeC and molecular weight 110,000 was obtained.
- 98 parts by weight of this resin was prepared by compounding with 2 parts by weight of polycarbonate to prepare a final resin composition. After producing this resin composition into the film by the solution casting method, extending
- An acrylic copolymer resin was prepared from 85 parts by weight of methyl methacrylate, 10 parts by weight of phenyl methacrylate, and 5 parts by weight of tert-butyl methacrylate.
- the resin with a glass transition temperature of 131 degreeC and molecular weight 110,000 was obtained.
- 98 parts by weight of this resin was prepared by compounding with 2 parts by weight of polycarbonate to prepare a final compounding resin. After producing this compounding resin into a film by the solution casting method, extending
- An acrylic copolymer resin was prepared from 80 parts by weight of methyl methacrylate, 10 parts by weight of phenyl methacrylate, and 10 parts by weight of tert-butyl methacrylate.
- the resin of glass transition temperature 136 degreeC and molecular weight 110,000 was obtained.
- 98 parts by weight of this resin was prepared by compounding with 2 parts by weight of polycarbonate to prepare a final compounding resin. After producing this compounding resin into a film by the solution casting method, extending
- An acrylic copolymer resin was prepared from 90 parts by weight of methyl methacrylate and 10 parts by weight of phenyl methacrylate. As a result of measuring the glass transition temperature and molecular weight of manufactured resin, the resin with a glass transition temperature of 118 degreeC and a weight average molecular weight 100,000 was obtained. 98 parts by weight of this resin was prepared by compounding with 2 parts by weight of polycarbonate to prepare a final compounding resin. After the compounding resin was prepared into a film by a solution casting method, stretching was performed at the glass transition temperature, and the retardation value of the film was measured. As a result, the plane retardation value / thickness retardation value was 1.4 / -0.9.
- PhMA Phenyl methacrylate
- the acrylic copolymer of the present invention prepared in Examples 1 to 4 was confirmed that the glass transition temperature is higher than the acrylic copolymer of Comparative Example 1 has excellent heat resistance.
- the optical film of the present invention prepared in Examples 1 to 4 was excellent in transparency, it was confirmed that it has a phase difference value of the preferred range.
- Test Example 1 Falling Test-Strength Assessment
- the falling ball test was performed to measure the strength of the films prepared in Examples 1, 2, 3, 4 and Comparative Example 1.
- the experimental method was measured by dropping steel balls having a particle diameter of 15.9 mm and a weight of 16.3 g on the film to measure the height at which the holes were formed in the film. The measured height is shown in Table 3 below.
- Example 1 Example 2
- Example 3 Example 4 Comparative Example 1 Hole height in film (mm) 650 640 670 630 540
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Materials Engineering (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
단량체(중량%) | Tg(℃) | Mw | |||
MMA | PhMA | TBMA | |||
실시예1 | 89 | 10 | 1 | 122 | 115000 |
실시예2 | 87 | 10 | 3 | 128 | 100000 |
실시예3 | 85 | 10 | 5 | 131 | 110000 |
실시예4 | 80 | 10 | 10 | 136 | 110000 |
비교예1 | 90 | 10 | - | 118 | 100000 |
단량체(중량%) | 컴파운딩(중량부) | 투명도 Haze(%) | Rin(nm) | Rth(nm) | ||||
MMA | PhMA | TBMA | MMA-PhMA- TBMA | PC | ||||
실시예1 | 89 | 10 | 1 | 98 | 2 | ? | 1.5 | -0.9 |
실시예2 | 87 | 10 | 3 | 98 | 2 | ? | 1.6 | -0.9 |
실시예3 | 85 | 10 | 5 | 98 | 2 | ? | 1.3 | -1.6 |
실시예4 | 80 | 10 | 10 | 98 | 2 | ? | 1.8 | -1.5 |
비교예1 | 90 | 10 | - | 98 | 2 | ? | 1.4 | 0.9 |
실시예1 | 실시예2 | 실시예3 | 실시예4 | 비교예1 | |
필름에 구멍이 생기는 높이(mm) | 650 | 640 | 670 | 630 | 540 |
Claims (18)
Priority Applications (2)
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JP2013509008A JP5679492B2 (ja) | 2010-06-21 | 2011-06-14 | 樹脂組成物、光学フィルム、偏光板および液晶表示装置 |
US13/805,224 US20130158201A1 (en) | 2010-06-21 | 2011-06-14 | Acrylic copolymer and optical film including the same |
Applications Claiming Priority (2)
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KR10-2010-0058716 | 2010-06-21 | ||
KR1020100058716A KR101304588B1 (ko) | 2010-06-21 | 2010-06-21 | 아크릴계 공중합체 및 이를 포함하는 광학필름 |
Publications (2)
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WO2011162499A2 true WO2011162499A2 (ko) | 2011-12-29 |
WO2011162499A3 WO2011162499A3 (ko) | 2012-05-03 |
Family
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PCT/KR2011/004341 WO2011162499A2 (ko) | 2010-06-21 | 2011-06-14 | 아크릴계 공중합체 및 이를 포함하는 광학필름 |
Country Status (4)
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US (1) | US20130158201A1 (ko) |
JP (1) | JP5679492B2 (ko) |
KR (1) | KR101304588B1 (ko) |
WO (1) | WO2011162499A2 (ko) |
Cited By (1)
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JP2014228760A (ja) * | 2013-05-24 | 2014-12-08 | コニカミノルタ株式会社 | 偏光板保護フィルム、偏光板及び液晶表示装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102144131B1 (ko) * | 2012-08-09 | 2020-08-12 | 스미또모 가가꾸 가부시키가이샤 | 광학 재료용 수지 조성물 및 그 제조 방법 |
JP6398426B2 (ja) * | 2014-07-29 | 2018-10-03 | 住友化学株式会社 | 樹脂組成物 |
JP6911422B2 (ja) * | 2016-04-08 | 2021-07-28 | 三菱ケミカル株式会社 | メタクリル酸エステル及びその製造方法、並びにその(共)重合体 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6136449A (en) * | 1995-12-19 | 2000-10-24 | Basf Coatings Ag | Method for forming a paint film, and a painted object |
KR20070006928A (ko) * | 2004-04-28 | 2007-01-11 | 도레이 가부시끼가이샤 | 아크릴 수지 필름 및 제조 방법 |
US7241404B2 (en) * | 2003-04-09 | 2007-07-10 | Nippon Shokubai Co., Ltd | Resin composition, optical filter and plasma display |
KR20080050398A (ko) * | 2005-08-30 | 2008-06-05 | 닛토덴코 가부시키가이샤 | 편광자 보호 필름, 편광판, 및 화상표시장치 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3719239A1 (de) * | 1987-06-06 | 1988-12-15 | Roehm Gmbh | Vertraegliche polycarbonat-polymethacrylat-mischungen |
US5200492A (en) * | 1990-10-29 | 1993-04-06 | Kuraray Co., Ltd. | Polymer blends |
JP3048183B2 (ja) * | 1991-07-30 | 2000-06-05 | 株式会社クラレ | 低複屈折性メタクリル系樹脂組成物 |
JP3119457B2 (ja) * | 1992-04-29 | 2000-12-18 | 株式会社クラレ | 透明フィルム |
JP3215719B2 (ja) * | 1992-06-18 | 2001-10-09 | 株式会社クラレ | 重合体組成物 |
JP3202792B2 (ja) * | 1992-06-19 | 2001-08-27 | 日本ペイント株式会社 | レジスト組成物 |
JPH0778153B2 (ja) * | 1992-10-09 | 1995-08-23 | ヘキスト合成株式会社 | 耐久性外装塗料用合成樹脂水性エマルジョン |
WO2002085980A1 (en) * | 2001-04-20 | 2002-10-31 | Plaskolite, Inc. | High heat distortion temperature methacrylate polymer blends |
JP2003089772A (ja) * | 2001-09-18 | 2003-03-28 | Sony Chem Corp | 粘着剤組成物及び粘着シートの製造方法 |
JP4074847B2 (ja) * | 2003-09-30 | 2008-04-16 | 恵和株式会社 | 光学シート及びこれを用いたバックライトユニット |
KR100952285B1 (ko) | 2007-06-14 | 2010-04-13 | 주식회사 엘지화학 | (메트)아크릴계 수지를 포함하는 광학필름 및 이의제조방법 |
KR101222059B1 (ko) * | 2008-02-27 | 2013-01-15 | 주식회사 엘지화학 | 위상차 필름, 이의 제조방법, 및 이를 포함하는 액정 표시장치 |
JP2011184621A (ja) * | 2010-03-10 | 2011-09-22 | Dic Corp | 耐汗性プラスチック基材コーティング剤 |
-
2010
- 2010-06-21 KR KR1020100058716A patent/KR101304588B1/ko active IP Right Grant
-
2011
- 2011-06-14 JP JP2013509008A patent/JP5679492B2/ja active Active
- 2011-06-14 US US13/805,224 patent/US20130158201A1/en not_active Abandoned
- 2011-06-14 WO PCT/KR2011/004341 patent/WO2011162499A2/ko active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6136449A (en) * | 1995-12-19 | 2000-10-24 | Basf Coatings Ag | Method for forming a paint film, and a painted object |
US7241404B2 (en) * | 2003-04-09 | 2007-07-10 | Nippon Shokubai Co., Ltd | Resin composition, optical filter and plasma display |
KR20070006928A (ko) * | 2004-04-28 | 2007-01-11 | 도레이 가부시끼가이샤 | 아크릴 수지 필름 및 제조 방법 |
KR20080050398A (ko) * | 2005-08-30 | 2008-06-05 | 닛토덴코 가부시키가이샤 | 편광자 보호 필름, 편광판, 및 화상표시장치 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014228760A (ja) * | 2013-05-24 | 2014-12-08 | コニカミノルタ株式会社 | 偏光板保護フィルム、偏光板及び液晶表示装置 |
Also Published As
Publication number | Publication date |
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KR20110138686A (ko) | 2011-12-28 |
WO2011162499A3 (ko) | 2012-05-03 |
JP5679492B2 (ja) | 2015-03-04 |
US20130158201A1 (en) | 2013-06-20 |
KR101304588B1 (ko) | 2013-09-05 |
JP2013533323A (ja) | 2013-08-22 |
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