WO2015046997A1 - 편광판 및 이를 포함하는 화상표시장치 - Google Patents
편광판 및 이를 포함하는 화상표시장치 Download PDFInfo
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- WO2015046997A1 WO2015046997A1 PCT/KR2014/009128 KR2014009128W WO2015046997A1 WO 2015046997 A1 WO2015046997 A1 WO 2015046997A1 KR 2014009128 W KR2014009128 W KR 2014009128W WO 2015046997 A1 WO2015046997 A1 WO 2015046997A1
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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
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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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
- G02B1/14—Protective coatings, e.g. hard coatings
Definitions
- the present invention relates to a polarizing plate and an image display device including the same, and more particularly, to a polarizing plate excellent in adhesiveness between a polarizer and a protective layer, excellent in heat resistance, and thinly manufactured, and an image display device including the same. will be.
- the polarizing plate has been commonly used in a structure in which a protective film is laminated on both sides of a polarizer made of a polyvinyl alcohol (hereinafter referred to as 'PVA')-based resin dyed with a dichroic dye or iodine. If the protective film does not exist, due to the weak dimensional stability of the polarizer, durability and optical properties are greatly reduced, because the water resistance is also very weak. At this time, the triacetyl cellulose (TAC, triacetyl cellulose) -based film has been used a lot of films in terms of excellent optical transparency and moisture permeability.
- TAC triacetyl cellulose
- the active energy ray-curable composition proposed to date can be divided into a radical curable composition and a cationic curable composition according to the curing method.
- the transparent thin film layer using the cation-curable composition has the advantage of having excellent adhesion with the polarizer, but many disadvantages, such as a problem of curling (curl) of the polarizing plate caused by the slow curing rate, low curing degree, dark reaction
- the present invention is to solve the above problems, to provide a polarizing plate excellent in the adhesion between the polarizer and the protective layer, even in high humidity conditions, excellent heat resistance, and can be manufactured in a thin shape and an image display device including the same.
- the present invention is a polarizer; And a protective layer formed on at least one surface of the polarizer, wherein the protective layer provides a polarizing plate that is a cured product of a radical curable composition having a hydroxyl value of 500 mg ⁇ KOH / g or more.
- the said radical curable composition contains the radically polymerizable 1st compound containing at least 2 hydroxyl group in a molecule
- numerator it is preferable that the said radical curable composition contains the radically polymerizable 1st compound containing at least 2 hydroxyl group in a molecule
- numerator it is preferable that the said radical curable composition contains the radically polymerizable 1st compound containing at least 2 hydroxyl group in a molecule
- the radically polymerizable first compound may be at least one selected from the group consisting of compounds represented by [Formula 1] to [Formula 17].
- the radically curable composition includes (A) a radical polymerizable first compound including at least two hydroxy groups in a molecule, (B) a radical polymerizable second compound including at least one hydrophilic functional group in a molecule, and (C) It may be one containing a radical initiator.
- the radical curable composition comprises (A) 5 to 90 parts by weight of a radical polymerizable first compound including at least two hydroxy groups in a molecule based on 100 parts by weight of the radical curable composition; (B) 5 to 90 parts by weight of a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; And (C) 0.5 to 20 parts by weight of a radical initiator.
- the hydrophilic functional group of the second compound is preferably a hydroxy group.
- the second compound may be represented by the following [Formula I].
- R 1 is an ester group or an ether group
- R 2 is a C 1-10 alkyl group, C 4-10 cycloalkyl group, or a combination thereof, wherein R 2 has one hydroxy substituent in the molecule
- R 3 is hydrogen or a substituted or unsubstituted C 1-10 alkyl group.
- the radically polymerizable second compound may be at least one selected from the group consisting of compounds represented by the following [Formula 18] to [Formula 23].
- the radically curable composition may further comprise a (D) polyfunctional (meth) acrylic compound, and / or a phosphate compound containing at least one (meth) acryl group in the (E) molecule.
- the radical curable composition is based on 100 parts by weight of the radical curable composition, (A) the content of the radically polymerizable first compound including at least two hydroxy groups in the molecule is 5 to 90 parts by weight; (B) the content of the radically polymerizable second compound including at least one hydrophilic functional group in the molecule is 5 to 90 parts by weight; (C) the content of the radical initiator is 0.5 to 20 parts by weight; (D) the content of the multifunctional (meth) acrylic compound is 4 to 50 parts by weight; (E) The content of the phosphate compound including at least one (meth) acryl group in the molecule may be 0.5 to 30 parts by weight.
- the radical curable composition may further include an epoxy compound having at least one epoxy group in the molecule (F) and a cationic initiator (G).
- the radical curable composition is based on 100 parts by weight of the radical curable composition, (A) the content of the radically polymerizable first compound including at least two hydroxy groups in the molecule is 5 to 90 parts by weight; (B) the content of the radically polymerizable second compound including at least one hydrophilic functional group in the molecule is 5 to 90 parts by weight; (C) the content of the radical initiator is 0.5 to 20 parts by weight; (F) The content of the epoxy compound containing at least one epoxy group in the molecule is 1 to 30 Parts by weight; (G) The content of the cationic initiator may be to include 0.5 to 15 parts by weight.
- the radical curable composition may be cured by light curing or thermal curing.
- the glass transition temperature after curing of the radical curable composition is preferably 50 °C or more.
- the protective layer preferably has a thickness of 0.5 to 20 ⁇ m.
- the polarizing plate of the present invention may be further attached to the protective film via the adhesive layer on the opposite side of the surface on which the protective layer of the polarizer is formed.
- the polarizing plate of the present invention may further include an adhesive layer on the protective layer.
- the present invention provides an image display device including the polarizing plate.
- the polarizing plate of the present invention is excellent in adhesion between the polarizer and the protective layer, and can maintain such adhesion stably even in a high humidity situation.
- the polarizing plate of the present invention may have a high glass transition temperature through hydrogen bonding generated due to the high hydroxyl value inside the cured protective layer, and thus is thermally stable.
- the polarizing plate of the present invention has a thin protective layer compared to the polarizing plate having a conventional transparent protective film, it can be manufactured in a thin shape.
- the radical curable composition of this invention is a polarizer; And a protective layer formed on at least one surface of the polarizer, wherein the protective layer is a cured product of a radical curable composition having a hydroxyl value of 500 mg ⁇ KOH / g or more.
- the polarizer of the present invention may use a film made of polyvinyl alcohol (PVA) containing a polarizer well known in the art, for example, iodine or dichroic dye.
- PVA polyvinyl alcohol
- the polarizer may be prepared by dyeing iodine or dichroic dye on a polyvinyl alcohol film, but a method of manufacturing the same is not particularly limited.
- the polarizer means a state not including a protective layer (or protective film), and the polarizing plate means a state including a polarizer and a protective layer (or protective film).
- the polyvinyl alcohol-based film can be used without particular limitation as long as it contains a polyvinyl alcohol resin or a derivative thereof.
- examples of the derivative of the polyvinyl alcohol resin include, but are not limited to, polyvinyl formal resin, polyvinyl acetal resin, and the like.
- the polyvinyl alcohol-based film may be a commercially available polyvinyl alcohol-based film commonly used in the manufacture of polarizers in the art, for example, P30, PE30, PE60 manufactured by Gurere, M3000 M6000 manufactured by Japan Synthetic, and the like. .
- the polyvinyl alcohol-based film is not limited to this, but the degree of polymerization is preferably about 1,000 to 10,000, preferably 1,500 to 5,000. This is because when the degree of polymerization satisfies the above range, the molecular motion is free and can be mixed flexibly with iodine or dichroic dye.
- the protective layer of the present invention is formed using a radical curable composition to support and protect the polarizer
- the radical curable composition according to the present invention has a hydroxyl value (hydroxyl value) of 500 mgKOH / g or more,
- hydroxyl value 500 mgKOH / g or more
- it is 500-900 mg.KOH / g, More preferably, it is about 500-850 mg.KOH / g.
- the protective layer formed by using the same has an advantage in that it can stably maintain high adhesiveness with the polarizer even in a relatively high humidity condition, and also has such a high hydroxyl value ( Due to the hydroxyl value, it is possible to have a high glass transition temperature due to the strong bonding force inside the cured adhesive, which has the advantage of ensuring thermal stability.
- the hydroxyl value means the number of mg of potassium hydroxide (KOH) required to neutralize the acetic acid bound to the hydroxyl group when acetylating the sample 1g
- the measurement method is not particularly limited.
- the hydroxyl value in the sample can be calculated through the following equation (1).
- the protective layer may be formed by a method well known in the art.
- the radical curable composition may be applied to at least one surface of the polarizer to form a protective layer, and then hardened.
- the coating may be performed by coating methods well known in the art, for example, spin coating, bar coating, roll coating, gravure coating, blade coating, and the like.
- the curing may be carried out by irradiating active energy rays, such as light curing, more specifically ultraviolet light, visible light, electron beam X-rays.
- active energy rays such as light curing, more specifically ultraviolet light, visible light, electron beam X-rays.
- it can be carried out by a method of irradiating ultraviolet light of about 10 to 2500mJ / cm 2 using a ultraviolet irradiation device (Metal halide lamp).
- the curing may be carried out by thermal curing, more specifically thermal curing at a curing temperature of 80 ° C. or higher.
- a known amine initiator may be further added to the composition in order to increase the curing rate upon thermal curing.
- the curing may be to additionally perform the thermal curing after the photo-curing, may be to perform the additional photo-cure after the thermal curing.
- the said radical curable composition of this invention contains the radically polymerizable 1st compound containing at least 2 hydroxyl group in a molecule
- the radically polymerizable first compound has at least two hydroxy groups in a molecule to realize excellent adhesion through a polarizer and a hydrogen bond, and can increase the hydroxyl value of the radically curable radical curable composition.
- radical polymerization is possible by having at least one radical polymerizable group in a molecule, for example, an unsaturated carbon bond between carbons, it can be used without particular limitation.
- the said radically polymerizable 1st compound contains a (meth) acryloyl group as said radically polymerizable group.
- the (meth) acryloyl group means a radical polymerizable group represented by the following [Formula A].
- X is hydrogen or methyl, and in * is connected to other atoms in the radically polymerizable first compound, such as carbon, oxygen, sulfur, nitrogen and the like.
- the radically polymerizable first compound may be one or more selected from the group consisting of compounds represented by the following [Formula 1] to [Formula 17].
- the said radically polymerizable 1st compound of this invention contains the radical initiator mentioned later at the time of UV hardening.
- the radically polymerizable first compound of the present invention may be thermally curable, and in this case, since the radically curable composition including the same may be cured by thermal curing, a separate optical radical initiator is not required. There is an advantage that it is possible to form a thermally more stable protective layer.
- the radically curable composition of the present invention in order to further improve the adhesion between the polarizer and the protective layer, to promote radical polymerization property to further improve the curing rate, a radically polymerizable second including at least one hydrophilic functional group in the molecule It may further comprise a compound and a radical initiator. That is, the radical curable composition of the present invention comprises: (A) a radical polymerizable first compound comprising at least two hydroxy groups in a molecule, (B) a radical polymerizable second compound including at least one hydrophilic functional group in a molecule, and (C) may contain a radical initiator.
- the radically polymerizable second compound including at least one hydrophilic functional group in the (B) molecule has at least one hydrophilic functional group in the molecule, so that adhesion between the polarizer and the hydrogen bond can be realized and carbon in the molecule can be achieved.
- the presence of a hepatic unsaturated double bond can be used without particular limitation as long as it is capable of radical polymerization.
- the radically polymerizable second compound including at least one hydrophilic functional group in the molecule is meant to exclude the radically polymerizable first compound including at least two hydroxyl groups in the molecule.
- the hydrophilic functional group is preferably a hydroxyl group for the implementation of excellent adhesion and high hydroxyl value (hydroxyl value).
- numerator is not limited to this, It is preferable that it is a compound represented by following [Formula I]. .
- R 1 is an ester group or an ether group
- R 2 is a C 1-10 alkyl group, C 4-10 cycloalkyl group, or a combination thereof, wherein R 2 has one hydroxy substituent in the molecule
- R 3 is hydrogen or a substituted or unsubstituted C 1-10 alkyl group.
- the alkyl group refers to a straight or branched chain hydrocarbon site of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms, wherein the alkyl group is at least in the molecule It may also contain one unsaturated bond.
- the alkyl group may be, but is not limited to, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decanyl, and the like.
- the cycloalkyl group means 4 to 14, or 4 to 10, or 4 to 6 non-aromatic monocyclic, bicyclic or tricyclic hydrocarbon sites.
- the cycloalkyl group may include at least one unsaturated bond in the molecule.
- the cycloalkyl group is not limited thereto, and examples thereof include a cyclopentane ring, a cyclohexane ring, and the like.
- the hydroxy group may be substituted at any position in the alkyl group or the cycloalkyl group.
- the hydroxy group may be at the end of the alkyl group or may be in the middle of the alkyl group.
- the remaining hydrogen atoms contained in the alkyl group or cycloalkyl group may be substituted with any substituent.
- the alkyl group refers to a straight or branched chain hydrocarbon site of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms, wherein the alkyl group in the molecule at least It may also contain one unsaturated bond.
- the alkyl group may be, but is not limited to, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decanyl, and the like.
- One or more hydrogen atoms included in the alkyl group may be substituted with any substituent.
- the compound represented by [Formula I] is not limited thereto, for example, may be at least one compound selected from compounds represented by the following [Formula 18] to [Formula 23].
- the (C) radical initiator is to improve the curing rate by promoting radical polymerizability, and the radical initiators generally used in the art may be used as the radical initiator without limitation.
- the radical initiator is, for example, 1-Hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1-phenyl-1 -Propanone (2-Hydroxy-2-methyl-1-phenyl-1-propanone), 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2-methyl-1-propanone (2-Hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2-methyl-1-propanone), Methylbenzoylformate, Oxy-phenyl-acetic acid-2- [2-oxo-2- Phenyl-acetoxy-ethoxy] -ethyl ester (oxy-phenyl-acetic acid-2- [2 oxo-2phenyl-acetoxy-ethoxy] -ethyl ester), oxy-phenyl-acetic acid-2- [2-hydroxy- Oxy-phenyl-acetic acid-2- [2-hydroxy- Oxy
- the radical curable composition of the present invention based on 100 parts by weight of the radical curable composition, (A) 5 to 90 parts by weight of a radical polymerizable first compound containing at least two hydroxy groups in the molecule; (B) 5 to 90 parts by weight of a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; And (C) 0.5 to 20 parts by weight of the radical initiator.
- the radically polymerizable first compound including at least two hydroxy groups in the (A) molecule is about 10 to 90 parts by weight, preferably about 10 to 80 parts by weight based on 100 parts by weight of the total radical curable composition. More preferably, it may be about 20 to 80 parts by weight.
- the compound (A) satisfies the content, it is possible to secure both excellent adhesion and water resistance.
- the radically polymerizable second compound including at least one hydrophilic functional group in the (B) molecule is about 5 to 90 parts by weight, preferably about 5 to 80 parts by weight, based on 100 parts by weight of the total radical curable composition, More preferably, it may be about 10 to 80 parts by weight.
- the compound (B) satisfies the content, it may have excellent adhesion.
- the (C) radical initiator may be about 0.5 to 20 parts by weight, preferably about 0.5 to 15 parts by weight, and more preferably about 0.5 to 10 parts by weight based on 100 parts by weight of the total radical curable composition. This is because when the content of the radical initiator satisfies the numerical range, the radical curable composition may be smoothly cured.
- the radically curable composition of the present invention further increases the crosslinking degree in the protective layer to improve the water resistance to show stable physical properties even in a high humidity environment (D) in the polyfunctional (meth) acrylic compound and / or (E) molecule
- a phosphate compound containing at least one (meth) acryl group may be included.
- the radical curable composition of the present invention may comprise (A) a radical polymerizable first compound including at least two hydroxy groups in a molecule; (C) a radical initiator; (D) A polyfunctional (meth) acrylic compound and / or (E) may contain a phosphate compound containing at least one (meth) acryl group in a molecule.
- the radical curable composition of the present invention may comprise (A) a radical polymerizable first compound including at least two hydroxy groups in a molecule; (B) a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; (C) a radical initiator; (D) A polyfunctional (meth) acrylic compound and / or (E) may contain a phosphate compound containing at least one (meth) acryl group in a molecule.
- the (D) polyfunctional (meth) acrylic compound various polyfunctional (meth) acrylic compounds well known in the art may be used without particular limitation.
- the compounds corresponding to the above-mentioned (A) to (B) compounds and the (E) compounds to be described later are used in the polyfunctional (meth) acrylic compounds.
- (D) polyfunctional (meth) acrylic-type compound ethylene glycol di (meth) acrylate, 1, 3- butanediol di (meth) acrylate, 1, 4- butanediol di (Meth) acrylate, 1,6-hexanedioldi (meth) acrylate, 1,9-nonanedioldi (meth) acrylate, neopentyl glycoldi (meth) acrylate, trimethylolpropanedi (meth) acrylic Rate, pentaerythritol di (meth) acrylate, ditrimethylolpropanedi (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, dipropylene glycol di (meth) Acrylate, tripropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate
- the present invention is not limited thereto, but the (D) polyfunctional (meth) acrylic compound is more preferably one or more selected from the group consisting of compounds represented by the following [Formula II] to [Formula IV]. This is because the water resistance improvement effect is more excellent.
- R 4 and R 5 are each independently a (meth) acryloyloxy group or a (meth) acryloyloxyalkyl group.
- the alkyl of the (meth) acryloyloxyalkyl group is a straight or branched chain hydrocarbon site of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms. Meaning, the (meth) acryloyloxy group may be substituted at any position of the alkyl group. The remaining one or more hydrogen atoms included in the alkyl may be substituted with any substituent.
- R 6 , R 7 and R 8 are each independently a (meth) acryloyloxy group or a (meth) acryloyloxyalkyl group
- R 9 is a (meth) acryloyloxy group, (meth ) Acryloyloxyalkyl group, a hydroxy group, or a substituted or unsubstituted C 1-10 alkyl group.
- the alkyl of the (meth) acryloyloxyalkyl group is 1 to 10, or 1 to 8, or a straight chain of 1 to 4 carbon atoms or A branched hydrocarbon moiety, wherein the (meth) acryloyloxy group can be substituted at any position of the alkyl group.
- the remaining one or more hydrogen atoms included in the alkyl may be substituted with any substituent.
- the alkyl group refers to a straight or branched chain hydrocarbon site of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms, at least one hydrogen contained in the alkyl group
- the atom may be substituted with any substituent.
- R 10 is substituted or unsubstituted C 1-10 alkylene, and R 11 and R 12 are each independently a (meth) acryloyloxy group or a (meth) acryloyloxyalkyl group.
- the alkylene refers to a straight or branched chain divalent hydrocarbon moiety of 1 to 10, or 1 to 8, or 1 to 6 carbon atoms, in the present specification
- the group may contain at least one unsaturated bond in the molecule.
- the alkylene group includes, but is not limited to, methylene, ethylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, nonamethylene, decamethylene and the like.
- One or more hydrogen atoms included in the alkylene may be substituted with any substituent.
- the alkyl of the (meth) acryloyloxyalkyl group is a straight or branched chain hydrocarbon site of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms. Meaning, the (meth) acryloyloxy group may be substituted at any position of the alkyl group. The remaining one or more hydrogen atoms included in the alkyl may be substituted with any substituent.
- the (D) polyfunctional (meth) acrylic compound may be, but is not limited to, at least one compound selected from the group consisting of compounds represented by the following [Formula 24] to [Formula 27]. .
- the phosphate compound including at least one (meth) acryl group in the (E) molecule may be used without particular limitation as long as it is a phosphate compound including at least one (meth) acryl group in the molecule.
- the phosphate compound including at least one (meth) acryl group in the (E) molecule may be a compound represented by the following [Formula V].
- R 13 is a substituted or unsubstituted C 1 ⁇ 10 alkyl group, a substituted or unsubstituted C 4 ⁇ 14 cycloalkyl group, a substituted or unsubstituted C 6 ⁇ 14 aryl group, or their Combination;
- R 14 is hydrogen or a methyl group;
- the alkylene group refers to a straight or branched chain divalent hydrocarbon moiety of 1 to 10, or 1 to 8, or 1 to 4 carbon atoms, in the present specification
- the group may contain at least one unsaturated bond in the molecule.
- the alkylene group includes, but is not limited to, methylene, ethylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, nonamethylene, decamethylene and the like.
- One or more hydrogen atoms included in the alkylene group may be substituted with any substituent.
- the cycloalkylene group represents a non-aromatic divalent monocyclic, bicyclic or tricyclic hydrocarbon moiety of 4 to 14, or 4 to 10, or 4 to 6 ring carbons.
- the alkylene group may include at least one unsaturated bond in the molecule.
- a bivalent cyclopentane ring, a cyclohexane ring, etc. are mentioned as an example.
- One or more hydrogen atoms included in the cycloalkylene group may be substituted with any substituent.
- the arylene group means a divalent monocyclic, bicyclic or tricyclic aromatic hydrocarbon moiety having 6 to 14, or 6 to 12 ring atoms, but is not limited thereto. And divalent, benzene ring, naphthalene ring, anthracene ring, biphenyl ring and the like. One or more hydrogen atoms included in the arylene group may be substituted with any substituent.
- the R 13 include, but are not limited to, inter alia, and substituted or more preferably a preferably unsubstituted C 1 ⁇ 10 alkylene group that is substituted or unsubstituted C 1 ⁇ 8 alkylene group is a substituted or unsubstituted C 1 ⁇ 4 alkylene group is more preferable.
- n is an integer of 1-2
- m is an integer of 1-2
- n + m 3
- n 2
- m 3
- the phosphate compound including at least one (meth) acryl group in the (E) molecule is not limited thereto, but is selected from the group consisting of compounds represented by the following [Formula 28] to [Formula 33]. It may be one or more compounds.
- the radical curable composition of the present invention further includes the compound (D) and / or (E) in this way, the content of the radically polymerizable first compound including at least two hydroxyl groups in the molecule (A)
- the silver may be about 10 to 90 parts by weight, preferably about 10 to 80 parts by weight, and more preferably about 20 to 80 parts by weight based on 100 parts by weight of the total radical curable composition.
- the content of the radically polymerizable second compound including at least one hydrophilic functional group in the (B) molecule is about 5 to 90 parts by weight, preferably 5 to 80 parts by weight, based on 100 parts by weight of the total radical curable composition. Degree, more preferably about 10 to 80 parts by weight.
- the compound (B) satisfies the content, it may have excellent adhesion.
- the content of the (C) radical initiator may be about 0.5 to 20 parts by weight, preferably about 0.5 to 15 parts by weight, and more preferably about 0.5 to 10 parts by weight based on 100 parts by weight of the total radical curable composition. . This is because when the content of the radical initiator satisfies the numerical range, the adhesive may be smoothly cured.
- the content of the (D) polyfunctional (meth) acrylic compound is about 4 to 50 parts by weight, preferably about 5 to 40 parts by weight, and more preferably 6 to 40 parts by weight based on 100 parts by weight of the total radical curable composition. It may be about a weight part.
- the radical curable composition of the present invention may secure excellent adhesion and water resistance.
- the content of the phosphate compound having at least one (meth) acryloyloxy group in the (E) molecule is about 0.5 to 30 parts by weight, preferably about 0.5 to 20 parts by weight, based on 100 parts by weight of the total radical curable composition. More preferably, it may be about 0.5 to about 15.
- the radical curable composition of the present invention may secure excellent adhesion and water resistance.
- the radically curable composition may include, based on 100 parts by weight of the radical curable composition, (A) 5 to 90 parts by weight of a radical polymerizable first compound including at least two hydroxy groups in a molecule; (B) 5 to 90 parts by weight of a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; (C) 0.5 to 20 parts by weight of radical initiator; (D) 4 to 50 parts by weight of the multifunctional (meth) acrylic compound; And / or (E) 0.5 to 30 parts by weight of a phosphate compound including at least one (meth) acryl group in a molecule.
- A 5 to 90 parts by weight of a radical polymerizable first compound including at least two hydroxy groups in a molecule
- B 5 to 90 parts by weight of a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule
- C 0.5 to 20 parts by weight of radical initiator
- D 4 to 50 parts by weight of the multi
- the radical curable radical curable composition of the present invention may further include an epoxy compound having at least one epoxy group in the (F) molecule and (G) cationic initiator in order to improve the water resistance and to exhibit stable physical properties even in a high humidity environment have.
- the radical curable composition of the present invention comprises: (A) a radical polymerizable first compound containing at least two hydroxy groups in a molecule; (F) an epoxy compound containing at least one epoxy group in a molecule; And (G) a cation initiator.
- the radical curable composition of the present invention comprises: (A) a radical polymerizable first compound containing at least two hydroxy groups in a molecule; (B) a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; (C) a radical initiator; (F) an epoxy compound containing at least one epoxy group in a molecule; And (G) a cation initiator.
- the epoxy compound having at least one epoxy group in the (F) molecule is not particularly limited as long as it has at least one epoxy group in the molecule, for example, an aromatic epoxy compound, a hydrogenated epoxy compound, an alicyclic epoxy compound And epoxy group-containing (meth) acrylic compounds. These can be used individually or in mixture of 2 or more.
- the aromatic epoxy compound refers to an epoxy compound containing at least one aromatic hydrocarbon ring in the molecule, but is not limited thereto, for example, diglycidyl ether of bisphenol A, diglycile of bisphenol F Bisphenol-type epoxy resins such as dil ether and diglycidyl ether of bisphenol S; Novolak-type epoxy resins, such as a phenol novolak epoxy resin, a cresol novolak epoxy resin, and a hydroxy benzaldehyde phenol novolak epoxy resin; And polyfunctional epoxy resins such as glycidyl ether of tetrahydroxyphenyl methane, glycidyl ether of tetrahydroxybenzophenone, and epoxidized polyvinylphenol.
- diglycidyl ether of bisphenol A diglycile of bisphenol F
- Bisphenol-type epoxy resins such as dil ether and diglycidyl ether of bisphenol S
- Novolak-type epoxy resins such as
- the hydrogenated epoxy compound means an epoxy compound obtained by selectively hydrogenating the aromatic epoxy compound in the presence of a catalyst under pressure.
- the alicyclic epoxy compound means an epoxy compound in which an epoxy group is formed between two adjacent carbon atoms constituting an aliphatic hydrocarbon ring, but is not limited thereto.
- the said epoxy group containing (meth) acrylic-type compound means the compound containing both an epoxy group and a (meth) acryloyloxy group in a molecule
- numerator It is not limited to this, For example, glycidyl acrylate, 2-methyl Glycidyl acrylate, 3,4-epoxybutyl acrylate, 6,7-epoxyheptyl acrylate, 3,4-epoxycyclohexyl acrylate, glycidyl methacrylate, 2-methylglycidyl methacrylate And 3,4-epoxybutyl methacrylate, 6,7-epoxyheptyl methacrylate, 3,4-epoxycyclohexyl methacrylate, 4-hydroxybutyl acrylate glycidyl ether and the like.
- the epoxy compound which has at least 1 epoxy group in the said (F) molecule contains 1 or more selected from the group which consists of an alicyclic epoxy type compound and an epoxy group containing (meth) acrylic type compound.
- the alicyclic epoxy compound is an epoxy compound having at least two epoxy groups and at least two alicyclic rings in the molecule, for example, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxyl It is especially preferable that it is a rate etc.
- the said epoxy group containing (meth) acrylic-type compound is a glycidyl (meth) acrylic-type compound, for example, glycidyl acrylate, glycidyl methacrylate, etc. especially. In this case, the effect of improving the water resistance of the protective layer of the present invention is very excellent.
- the (G) cationic initiator is a compound that generates an acid (H +) by the active energy ray
- the cationic initiator usable in the present invention for example, sulfonium salt (Sulfonium salt) or iodonium salt (Iodonium) salt
- sulfonium salt Sulfonium salt
- iodonium salt Iodonium salt
- photoacid generators that include sulfonium salts or iodonium salts include, for example, diphenyl (4-phenylthio) phenylsulfonium hexafluoroantimonate (Diphenyl (4- phenylthio) phenylsulfonium hexafluoroantimonate), diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate, (phenyl) [4- (2-methylpropyl) phenyl] -iodine hexa Fluorophosphate ((phenyl) [4- (2-methylpropyl) phenyl] -Iodonium hexafluorophosphate), (thiodi-4,1-phenylene) bis (diphenylsulfonium) dihexafluoroantimonate ((Thiodi- 4,1-phenylene) bis (diphenyls
- the radical curable composition of the present invention further comprises a (F) compound and a (G) cationic initiator in this way
- the content of the radically polymerizable first compound including at least two hydroxyl groups in the (A) molecule is It may be about 10 to 90 parts by weight, preferably about 10 to 80 parts by weight, and more preferably about 20 to 80 parts by weight based on 100 parts by weight of the total radical curable composition.
- the compound (A) satisfies the content, it is possible to secure both excellent adhesion and high glass transition temperature.
- the content of the radically polymerizable second compound including at least one hydrophilic functional group in the (B) molecule is about 5 to 90 parts by weight, preferably 5 to 80 parts by weight, based on 100 parts by weight of the total radical curable composition. Degree, more preferably about 10 to 80 parts by weight.
- the radical curable composition of the present invention may have particularly excellent adhesiveness.
- the content of the (C) radical initiator may be about 0.5 to 20 parts by weight, preferably about 0.5 to 15 parts by weight, and more preferably about 0.5 to 10 parts by weight based on 100 parts by weight of the total radical curable composition. .
- the adhesive may be cured smoothly.
- the content of the epoxy compound having at least one epoxy group in the (F) molecule is about 1 to 30 parts by weight, preferably about 4 to 25 parts by weight, more preferably about 100 parts by weight of the total radical curable composition. It may be about 5 to 20 parts by weight.
- the radical curable composition of the present invention may secure excellent adhesion and water resistance.
- the content of the (G) cationic initiator may be about 0.5 to 15 parts by weight, preferably about 0.5 to 12 parts by weight, and more preferably about 0.5 to 10 parts by weight based on 100 parts by weight of the total radical curable composition. .
- the cationic initiator satisfies the content range, curing of the adhesive can be made smoothly.
- the radically curable composition may include, based on 100 parts by weight of the radical curable composition, (A) 5 to 90 parts by weight of a radical polymerizable first compound including at least two hydroxy groups in a molecule; (B) 5 to 90 parts by weight of a radically polymerizable second compound comprising at least one hydrophilic functional group in the molecule; (C) 0.5 to 20 parts by weight of radical initiator; (F) 1 to 30 parts by weight of an epoxy compound containing at least one epoxy group in the molecule; And (G) 0.5 to 15 parts by weight of the cationic initiator.
- the radical curable composition is preferably a glass transition temperature of 50 °C or more after curing.
- it may be 55 to 200 ° C or 60 to 200 ° C.
- the protective layer formed is thermally very stable, because the heat resistance of the polarizing plate including the same is excellent.
- the thickness of the protective layer formed using the radically curable composition is preferably 0.5 to 20 ⁇ m, for example, 0.5 to 15 ⁇ m or 0.5 to 10 ⁇ m. This is because when the thickness of the protective layer satisfies the above range, the thickness of the polarizing plate produced can be reduced. If the thickness is too thin, the thermal shock stability and curl characteristics of the polarizer are weak, and if too thick, the thickness of the polarizing plate is difficult.
- the polarizing plate of the present invention may further include a protective film on one surface of the polarizer as needed. More specifically, in the polarizing plate of the present invention, when the protective layer is formed on one surface of the polarizer, a separate protective film may be attached through the adhesive layer to support and protect the polarizer on the opposite side of the surface on which the protective layer is formed. have.
- the protective film is for supporting and protecting the polarizer
- protective films of various materials generally known in the art for example, cellulose-based film, polyethylene terephthalate (PET) film, cyclo An olefin polymer (COP, cycloolefin polymer) film, acrylic film, or the like can be used without limitation.
- PET polyethylene terephthalate
- COP cycloolefin polymer
- acrylic film or the like
- the acrylic film usable in the present invention can be obtained by molding a molding material containing (meth) acrylate-based resin as a main component by extrusion molding.
- the (meth) acrylate-based resin is a resin containing a (meth) acrylate-based unit as a main component, as well as a homopolymer resin consisting of (meth) acrylate-based units, as well as (meth) acrylate-based units
- the concept also includes a blend resin blended with other resin.
- the (meth) acrylate-based unit may be, for example, an alkyl (meth) acrylate-based unit.
- the alkyl (meth) acrylate-based unit means both an alkyl acrylate-based unit and an alkyl methacrylate-based unit
- the alkyl group of the alkyl (meth) acrylate-based unit is preferably 1 to 10 carbon atoms, It is more preferable that it is C1-C4.
- a styrene type unit, a maleic anhydride type unit, a maleimide type unit, etc. are mentioned as a monomeric unit copolymerizable with the said (meth) acrylate type unit.
- the styrene-based unit is not limited thereto, and examples thereof include styrene, ⁇ -methylstyrene, and the like;
- the maleic anhydride monomer include, but are not limited to, maleic anhydride, methyl maleic anhydride, cyclohexyl maleic anhydride, phenyl maleic anhydride, and the like;
- the maleimide monomers include, but are not limited to, maleimide, N-methyl maleimide, N-cyclohexyl maleimide, N-phenyl maleimide, and the like. These may be used alone or in combination.
- the acrylic film may be a film containing a (meth) acrylate resin having a lactone ring structure.
- (meth) acrylate type resin which has a lactone ring structure it is the lactone described, for example in Unexamined-Japanese-Patent No. 2000-230016, Unexamined-Japanese-Patent No. 2001-151814, 2002-120326, etc.
- (Meth) acrylate type resin which has a ring structure is mentioned.
- the method for producing the acrylic film is not particularly limited, and for example, (meth) acrylate-based resin and other polymers, additives, and the like are sufficiently mixed by any suitable mixing method to prepare a thermoplastic resin composition, which is then film-molded. Or (meth) acrylate-based resin and other polymers, additives and the like may be prepared in a separate solution and then mixed to form a uniform mixed solution and then film-molded.
- the acrylic film may be any of an unstretched film or a stretched film. In the case of a stretched film, it may be a uniaxial stretched film or a biaxially stretched film, and in the case of a biaxially stretched film, it may be either a simultaneous biaxially stretched film or a successive biaxially stretched film.
- the polarizing plate of the present invention may further include a primer layer between the adhesive layer and the protective film in order to further improve the adhesive force.
- the primer layer may be formed by coating and drying a coating solution containing a water dispersible polymer resin, water dispersible fine particles and water on a protective film using a bar coating method, a gravure coating method, or the like.
- the water-dispersible polymer resin may be, for example, a water-based polyurethane resin, a water-based acrylic resin, a water-based polyester resin, or a combination thereof, and the water-dispersible microparticles may be inorganic fine particles such as silica, titania, alumina, zirconia, or the like.
- organic fine particles made of silicone resin, fluorine resin, (meth) acrylic resin, crosslinked polyvinyl alcohol and melamine resin, or a combination thereof may be used, but are not limited thereto.
- the adhesion of the polarizer and the protective film is coated with an adhesive on the surface of the polarizer or the protective film using a roll coater, gravure coater, bar coater, knife coater or capillary coater, etc., and then heat lamination with a lamination roll, It may be carried out by a method of pressing at room temperature and laminating or a method of UV irradiation after lamination.
- the adhesive various polarizing plate adhesives used in the art, for example, polyvinyl alcohol-based adhesives, polyurethane-based adhesives, acrylic adhesives, cationic or radical-based adhesives and the like can be used without limitation.
- the polarizing plate of the present invention may include an adhesive layer on an upper portion of the protective layer, if necessary, for attachment to an optical film such as a display panel or a retardation film.
- the pressure-sensitive adhesive layer may be formed using various pressure-sensitive adhesives well known in the art, and the kind thereof is not particularly limited.
- the pressure-sensitive adhesive layer may be a rubber pressure sensitive adhesive, an acrylic pressure sensitive adhesive, a silicone pressure sensitive adhesive, a urethane pressure sensitive adhesive, a polyvinyl alcohol pressure sensitive adhesive, a polyvinylpyrrolidone pressure sensitive adhesive, a polyacrylamide pressure sensitive adhesive, a cellulose pressure sensitive adhesive, a vinyl alkyl ether pressure sensitive adhesive, or the like. It can be formed using. Among these, in consideration of transparency, heat resistance and the like, it is particularly preferable to use an acrylic pressure-sensitive adhesive.
- the pressure-sensitive adhesive layer may be formed by applying a pressure-sensitive adhesive on the protective layer, or may be formed by a method of attaching the pressure-sensitive adhesive sheet prepared by applying the pressure-sensitive adhesive on the release sheet and dried on the protective layer.
- the polarizing plate of the present invention as described above can be usefully applied to an image display device such as a liquid crystal display device.
- the image display apparatus may be, for example, a liquid crystal display including a liquid crystal panel and polarizing plates provided on both surfaces of the liquid crystal panel, wherein at least one of the polarizing plates may be a polarizing plate according to the present invention.
- the type of liquid crystal panel included in the liquid crystal display device is not particularly limited.
- a panel of a passive matrix type such as, but not limited to, a twisted nematic (TN) type, a super twisted nematic (STN) type, a ferrolectic (F) type, or a polymer dispersed (PD) type; Active matrix panels such as two-terminal or three-terminal; All known panels, such as an In Plane Switching (IPS) panel and a Vertical Alignment (VA) panel, can be applied.
- IPS In Plane Switching
- VA Vertical Alignment
- other configurations constituting the liquid crystal display device for example, types of upper and lower substrates (eg, color filter substrates or array substrates) are not particularly limited, and configurations known in the art may be employed without limitation. Can be.
- the raw material hopper is a resin composition obtained by uniformly mixing poly (N-cyclohexylmaleimide-co-methylmethacrylate), styrene-maleic anhydride copolymer resin and phenoxy resin in a weight ratio of 100: 2.5: 5. From the extruder to a nitrogen-substituted 24 ⁇ extruder and melted at 250 ° C. to prepare a raw material pellet.
- the poly (N-cyclohexylmaleimide-co-methylmethacrylate) resin was used in which the content of N-cyclohexylmaleimide was 6.5% by weight as a result of NMR analysis.
- the obtained raw material pellets were vacuum-dried and melted with an extruder at 260 degreeC, passed through the T-die of a coat hanger type, and the film of 150 micrometers in thickness was produced through the chrome plating casting roll, a drying roll, etc.
- the film was stretched at a rate of 170% using a speed difference of the roll in the MD direction at 125 ° C. using a pilot stretching equipment to produce an acrylic film.
- Radical curable composition A for polarizing plates was prepared by adding 3 parts by weight of irgacure-819 (Ciba), a radical initiator, to 100 parts by weight of a resin composition prepared by adding 100% by weight of GLA (glyceryl monoacrylate).
- irgacure-819 Ciba
- GLA glyceryl monoacrylate
- Radical curable composition B for polarizing plates was prepared by adding 80 parts by weight of GLA (glyceryl monoacrylate) and 20 parts by weight of HEA (hydroxyethyl acrylate) to 3 parts by weight of a radical initiator irgacure-819 (Ciba). It was.
- GLA glycol monoacrylate
- HEA hydroxyethyl acrylate
- irgacure-819 Ciba
- HEA hydroxyethyl acrylate
- Radical curable composition for polarizing plates by adding 80 parts by weight of GLA (glyceryl monoacrylate) and 20 parts by weight of 1,4-cyclohexanedimethanol mono-acrylate to 3 parts by weight of a radical initiator irgacure-819 (Ciba) D was prepared.
- GLA glycol monoacrylate
- Ciba a radical initiator
- Radical curable composition E for polarizing plates was prepared by adding 3 parts by weight of irgacure-819 (Ciba), a radical initiator, to 100 parts by weight of a resin composition prepared by adding 100% by weight of HEA (hydroxyethyl acrylate).
- Radical curable composition F for polarizing plates was prepared by adding 3 parts by weight of irgacure-819 (Ciba), a radical initiator, to 100 parts by weight of 100% by weight of HEAA (hydroxyethyl acrylamide).
- Radical curable composition A was applied to the primer layer of the acrylic film-based protective film prepared in Preparation Example 1 with a dropper, laminated on one surface of a polarizer (PVA device), and then the conditions were such that the thickness of the final adhesive layer was 1 to 2 ⁇ m. After setting, passed the laminator (5m / min). Then, the surface of the acrylic film is laminated using a UV irradiation device (metal halide lamp), by irradiating ultraviolet light of 1000mJ / cm 2 , to prepare a polarizing plate having a protective film on one surface of the polarizer.
- a UV irradiation device metal halide lamp
- the radical curable composition A is applied to the other surface of the surface on which the protective film of the polarizer of the prepared polarizer is laminated, the PET film having a releasing force is laminated, and the final protective layer thickness is 4 to 5 ⁇ m.
- the laminator 5m / min.
- the surface on which the release PET is laminated is irradiated with ultraviolet light of 1000 mJ / cm 2 using a ultraviolet halide lamp, and the PET film is removed, and a protective film is provided on one side of the polarizer, and on the other side.
- the polarizing plate provided with a protective layer was manufactured.
- a polarizing plate was manufactured in the same manner as in Example 1, except that B was used as the radical curable composition.
- a polarizing plate was prepared in the same manner as in Example 1 and heat-treated in an oven at 90 ° C. for 1 minute.
- a polarizing plate was manufactured in the same manner as in Example 1 except that C was used as the radical curable composition.
- a polarizing plate was manufactured in the same manner as in Example 1 except that D was used as the radical curable composition.
- a polarizing plate was manufactured in the same manner as in Example 1 except that E was used as the radical curable composition.
- a polarizing plate was manufactured in the same manner as in Example 1, except that F was used as the radical curable composition.
- the adhesion of the protective layer of the polarizing plates manufactured in Examples 1 to 5 and Comparative Examples 1 to 2 was measured and shown in the following [Table 1]. Specifically, the radical curable composition used in Examples 1 to 5 and Comparative Examples 1 to 2 was applied on the polarizer (PVA device) at 4 to 5 ⁇ m, the polarizer (PVA device) was laminated thereon, and passed through the laminator. UV was irradiated at 1000 mJ / cm 2 using an ultraviolet irradiation device (Metal halide lamp) to prepare a peel force sample consisting of a polarizer / protective layer / polarizer. The sample was left for 4 days at a temperature of 20 ° C.
- peeling force was measured. At this time, when peeling force was 1.0N / 2cm-2.0N / 2cm, it was excellent, 0.5N / 2cm or more and less than 1.0N / 2cm, and it displayed as bad if it was less than 0.5N / 2cm.
- the thermal shock properties of the polarizing plates prepared in Examples 1 to 5 and Comparative Examples 1 to 2 were measured and shown in the following [Table 1]. Specifically, the polarizing plates prepared in Examples 1 to 5 and Comparative Examples 1 and 2 were laminated on a glass substrate, and were left at ⁇ 40 ° C. for 30 minutes, and then again at 80 ° C. for 30 minutes. Leaving was performed 100 times. Then, visual evaluation of the deformation of the polarizing plate appearance. The case where the occurrence of cracks of 2 mm or less in the exterior of the polarizing plate alone was excellent, and the case where only linear cracks of 5 mm or more shorter than the end were identified was good, and the case where many cracks occurred on the entire surface of the polarizing plate was indicated as bad.
- Comparative Example 1 did not have good thermal shock stability, and it was found that the adhesion of the protective layer of Comparative Example 2 was not good.
- the radical curable composition of the present invention further comprises the compound (D) and the compound (E) of the present invention, or the compound (F) and the cationic initiator (G).
- the radical curable composition of the present invention further comprises the compound (D) and the compound (E) of the present invention, or the compound (F) and the cationic initiator (G).
- Radical initiator was added to 100 parts by weight of a resin composition prepared by adding 64.5% by weight of GLA (glyceryl monoacrylate), 16% by weight of HEA (hydroxyethyl acrylate), 16% by weight of dimethylol tricyclodecane diacrylate (DCPDA), and 3.5% by weight of di- (methacryloyloxy ethyl) phosphate. 3 parts by weight of phosphorus irgacure-819 (Ciba) was added to prepare a radical curable composition G for a polarizing plate.
- GLA glycol monoacrylate
- HEA hydroxyethyl acrylate
- DCPDA dimethylol tricyclodecane diacrylate
- Siba phosphorus irgacure-819
- CPI 100P Sanapro
- a cationic initiator in 100 parts by weight of a resin composition prepared by adding 73% by weight of GLA (glyceryl monoacrylate), 18% by weight of HEA (hydroxyethyl acrylate), and 9% by weight of glycan methacrylate (GMA).
- GLA glyceryl monoacrylate
- HEA hydroxyethyl acrylate
- GMA glycan methacrylate
- an initiator irgacure-819 was added to prepare a radical curable composition H for a polarizing plate.
- a polarizing plate was manufactured in the same manner as in Example 1, except that G was used as the radical curable composition.
- a polarizing plate was manufactured in the same manner as in Example 1 except that H was used as the radical curable composition.
- the water resistance of the polarizing plates prepared in Examples 6 to 7 was measured and shown in the following [Table 2]. Specifically, after laminating the polarizing plates of Examples 6 to 7 on a glass substrate, it was immersed in a 60 ° C thermostat, and after 8 hours, the water resistance was judged by the discoloration of the ends of the polarizing plates, and there was no deformation. In this case, decolorization occurred as bad.
- the measuring method of the hydroxyl value, adhesiveness, and glass transition temperature which were further described in Table 2 is the same as the above-mentioned.
- the adhesive layer and the protective layer were manufactured using the same radical curable composition for convenience, but the present invention is not necessarily limited thereto.
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Abstract
Description
구분 | 조성물 | 수산기값 [mg KOH/g] | 보호층 두께 [㎛] | 밀착성 | 열충격 안정성 |
실시예 1 | A | 768 | 5 | 양호 | 양호 |
실시예 2 | B | 711 | 5 | 우수 | 우수 |
실시예 3 | B | 711 | 5 | 우수 | 우수 |
실시예 4 | C | 657 | 5 | 우수 | 양호 |
실시예 5 | D | 671 | 5 | 양호 | 우수 |
비교예 1 | E | 483 | 5 | 양호 | 나쁨 |
비교예 2 | F | 487 | 5 | 나쁨 | 양호 |
구분 | 조성물 | 내수성 | 수산기값 [mg KOH/g] | 밀착성 | 열충격 안정성 |
실시예 6 | E | 우수 | 576 | 우수 | 우수 |
실시예 7 | F | 우수 | 630 | 우수 | 양호 |
Claims (20)
- 편광자; 및상기 편광자의 적어도 일면에 형성되는 보호층을 포함하는 편광판이며,상기 보호층은 수산기값(hydroxy value)이 500 mg·KOH/g 이상인 라디칼 경화형 조성물의 경화물인 편광판.
- 제 1 항에 있어서,상기 라디칼 경화형 조성물은 분자 내에 적어도 2개의 히드록시기를 포함하는 라디칼 중합성 제 1 화합물을 포함하는 것인 편광판.
- 제 2 항에 있어서,상기 라디칼 경화형 조성물은 (A) 분자 내에 적어도 2개의 히드록시기를 포함하는 라디칼 중합성 제 1 화합물, (B) 분자 내에 적어도 1개의 친수성 관능기를 포함하는 라디칼 중합성 제 2 화합물, 및 (C) 라디칼 개시제를 포함하는 것인 편광판.
- 제 4 항에 있어서,상기 라디칼 경화형 조성물은 라디칼 경화형 조성물 100 중량부에 대하여, (A) 분자 내에 적어도 2개의 히드록시기를 포함하는 라디칼 중합성 제 1 화합물 5 내지 90 중량부; (B) 분자 내에 적어도 1개의 친수성 관능기를 포함하는 라디칼 중합성 제 2 화합물 5 내지 90 중량부; 및 (C) 라디칼 개시제 0.5 내지 20 중량부를 포함하는 것인 편광판.
- 제 4 항에 있어서,상기 라디칼 중합성 제 2 화합물의 친수성 관능기는 히드록시기인 편광판.
- 제 2 항 또는 제 4 항에 있어서,상기 라디칼 경화형 조성물은 (D) 다관능성 (메트)아크릴계 화합물, (E) 분자 내에 적어도 1개의 (메트)아크릴기를 포함하는 포스페이트 화합물, 또는 이들의 조합을 더 포함하는 것인 편광판.
- 제 9 항에 있어서,상기 (D) 다관능성 (메트)아크릴계 화합물은 라디칼 경화형 조성물 100 중량부에 대하여 4 내지 50 중량부로 포함되는 것인 편광판.
- 제 9 항에 있어서,상기 (E) 분자 내에 적어도 1개의 (메트)아크릴기를 포함하는 포스페이트 화합물은 라디칼 경화형 조성물 100 중량부에 대하여 0.5 내지 30 중량부로 포함되는 것인 편광판.
- 제 2 항 또는 제 4 항에 있어서,상기 라디칼 경화형 조성물은 (F) 분자 내에 적어도 1개의 에폭시기를 갖는 에폭시 화합물 및 (G) 양이온 개시제를 더 포함하는 것인 편광판.
- 제 12 항에 있어서,상기 (F) 분자 내에 적어도 1개의 에폭시기를 포함하는 에폭시 화합물은 라디칼 경화형 조성물 100 중량부에 대하여 1 내지 30 중량부로 포함되는 것인 편광판.
- 제 12 항에 있어서,상기 (G) 양이온 개시제는 라디칼 경화형 조성물 100 중량부에 대하여 0.5 내지 15 중량부로 포함되는 것인 편광판.
- 제 1 항에 있어서,상기 라디칼 경화형 조성물은 광 경화 또는 열 경화에 의하여 경화되는 것인 편광판.
- 제 1 항에 있어서,상기 라디칼 경화형 조성물은 경화 후 유리전이온도가 50℃ 이상인 편광판.
- 제 1 항에 있어서,상기 보호층은 두께가 0.5 내지 20㎛인 편광판.
- 제 1 항에 있어서,상기 편광자의 보호층이 형성된 면의 반대면에 접착제층을 매개로 보호 필름이 부착된 편광판.
- 제 1 항에 있어서,상기 보호층 상부에 점착층을 더 포함하는 편광판.
- 제 1 항의 편광판을 포함하는 화상표시장치.
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JP2016545699A JP6464175B2 (ja) | 2013-09-30 | 2014-09-29 | 偏光板およびこれを含む画像表示装置 |
US15/025,194 US9733398B2 (en) | 2013-09-30 | 2014-09-29 | Polarizing plate and image display apparatus comprising same |
CN201480059148.0A CN105683787B (zh) | 2013-09-30 | 2014-09-29 | 偏光板和包括该偏光板的图像显示设备 |
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JP2005010329A (ja) * | 2003-06-18 | 2005-01-13 | Sony Chem Corp | 偏光板及び液晶表示素子 |
KR20120015780A (ko) * | 2010-08-13 | 2012-02-22 | 주식회사 엘지화학 | 편광판 및 이를 포함하는 액정 표시 장치 |
JP2012183725A (ja) * | 2011-03-05 | 2012-09-27 | Mitsubishi Plastics Inc | 積層ポリエステルフィルム |
JP2013127571A (ja) * | 2011-12-19 | 2013-06-27 | Konica Minolta Advanced Layers Inc | 偏光板保護フィルムおよびこれを用いた偏光板 |
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US6552159B1 (en) * | 1991-03-15 | 2003-04-22 | Dao-Ichi Kogyo Seiyaku Co., Ltd. | Cladding resin composition |
JP2005010329A (ja) * | 2003-06-18 | 2005-01-13 | Sony Chem Corp | 偏光板及び液晶表示素子 |
KR20120015780A (ko) * | 2010-08-13 | 2012-02-22 | 주식회사 엘지화학 | 편광판 및 이를 포함하는 액정 표시 장치 |
JP2012183725A (ja) * | 2011-03-05 | 2012-09-27 | Mitsubishi Plastics Inc | 積層ポリエステルフィルム |
JP2013127571A (ja) * | 2011-12-19 | 2013-06-27 | Konica Minolta Advanced Layers Inc | 偏光板保護フィルムおよびこれを用いた偏光板 |
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