WO2015046714A1 - 라디칼 경화형 접착제 조성물 및 이를 포함하는 편광판 - Google Patents
라디칼 경화형 접착제 조성물 및 이를 포함하는 편광판 Download PDFInfo
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- WO2015046714A1 WO2015046714A1 PCT/KR2014/005252 KR2014005252W WO2015046714A1 WO 2015046714 A1 WO2015046714 A1 WO 2015046714A1 KR 2014005252 W KR2014005252 W KR 2014005252W WO 2015046714 A1 WO2015046714 A1 WO 2015046714A1
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- Prior art keywords
- formula
- adhesive composition
- parts
- weight
- curable adhesive
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- LYNLLQLBATUSIE-UHFFFAOYSA-N CC(C(OCC(COC(C(CCCC1)C1C(O)=O)=O)COC(C=C)=O)=O)=C Chemical compound CC(C(OCC(COC(C(CCCC1)C1C(O)=O)=O)COC(C=C)=O)=O)=C LYNLLQLBATUSIE-UHFFFAOYSA-N 0.000 description 1
- MFWAWNCXRPVZQG-UHFFFAOYSA-N CC(C)(c(cc1)ccc1OCC(COC(C=C)=O)OC(C(CC=CC1)C1C(O)=O)=O)c(cc1)ccc1OCC(COC(C=C)=O)OC(C(CC=CC1)C1C(O)=O)=O Chemical compound CC(C)(c(cc1)ccc1OCC(COC(C=C)=O)OC(C(CC=CC1)C1C(O)=O)=O)c(cc1)ccc1OCC(COC(C=C)=O)OC(C(CC=CC1)C1C(O)=O)=O MFWAWNCXRPVZQG-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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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
Definitions
- the present invention relates to a radically curable adhesive composition and a polarizing plate including the same, and more particularly, to a radically curable adhesive composition and a polarizing plate including the same having excellent adhesion and heat resistance even in a high humidity environment.
- liquid crystal displays have low power consumption, operate at low voltage, and are used in various display devices due to their light weight and thinness.
- the liquid crystal display device is composed of many materials such as a liquid crystal cell, a polarizing plate, a retardation film, a light collecting sheet, a diffusion film, a light guide plate, and a light reflection sheet. Therefore, improvement aimed at productivity, weight reduction, brightness improvement, etc. is actively performed by reducing the number of constituent films or making the thickness of a film or sheet thin.
- the polarizing plate has been commonly used as a structure in which a protective film is laminated using one or both surfaces of a polarizer made of polyvinyl alcohol (hereinafter referred to as 'PVA')-based resin dyed with dichroic dye or iodine.
- a triacetyl cellulose (TAC) film has been mainly used as a polarizer protective film, but such a TAC film has a problem in that it is easily deformed in a high temperature and high humidity environment.
- protective films of various materials that can replace TAC films have been developed. For example, polyethylene terephthalate (PET), cycloolefin polymer (COP, cycloolefin polymer), and acrylic films may be used alone. Or a mixed use has been proposed.
- an aqueous adhesive mainly composed of an aqueous solution of polyvinyl alcohol-based resin is used as the adhesive used to attach the polarizer and the protective film.
- the non-aqueous adhesive for polarizing plates proposed to date can be divided into a radical curable adhesive and a cationic curable adhesive according to the curing method.
- Cationic curable adhesives have the advantage of having excellent adhesion to films of various materials, but have a number of disadvantages in the manufacturing process due to the slow curing rate and low curing degree.
- a radical curable adhesive based on an acrylamide compound has been proposed.
- the polarizing plate manufacturing process includes a wet process in which the swelling, dyeing, and stretching of the polyvinyl alcohol film is performed in an aqueous solution, the moisture content is high. Therefore, in order to apply the acrylamide-based adhesive to the polarizing plate, the polarizer may be used before applying the adhesive. It is a situation that additional processes such as hot air drying or surface treatment such as plasma should be performed.
- the present invention is to solve the above problems, and to provide a radical curable adhesive and a polarizing plate including the same that does not lower the curing rate and adhesion even in a high humidity environment.
- a compound represented by the following [Formula 1]; Vinyl ether compounds; Carboxylic acid compounds comprising at least one unsaturated double bond; And a radical initiator is provided.
- R 1 is an ester group or an ether group
- R 2 is a C 1-10 alkyl group having at least one or more hydroxy substituents or a C 4-10 cycloalkyl group having at least one or more hydroxy substituents
- R 3 is hydrogen or C 1 ⁇ 10 alkyl group.
- the radical curable adhesive composition is 40 to 90 parts by weight of the compound represented by the above [Formula 1] with respect to 100 parts by weight of the adhesive composition; 1 to 50 parts by weight of a vinyl ether compound; 1 to 50 parts by weight of a carboxylic acid compound including at least one unsaturated double bond; And 0.5 to 10 parts by weight of a radical initiator.
- the compound represented by [Formula 1] may be one or more selected from the group consisting of compounds represented by the following [Formula 2] to [Formula 9].
- the vinyl ether compound is ethylene glycol monovinyl ether, 1,4-butanol vinyl ether, di (ethylene glycol) divinyl ether, tri (ethylene glycol) divinyl ether, tert- butyl vinyl ether, 1- (vinyl Oxy) -2,2-bis ((vinyloxy) methyl) butane, 1,3-bis (vinyloxy) -2,2-bis ((vinyloxy) methyl) propane and cyclohexyl vinyl ether
- the carboxylic acid compound including at least one or more unsaturated double bonds may be at least one selected from the group consisting of maleic acid, fumaric acid, angelic acid, and tiglic acid.
- the radical curable adhesive composition of the present invention may further include a compound having an acid value of 100 to 1000 mgKOH / g, if necessary, wherein the content of the compound having an acid value of 100 to 1000 mgKOH / g is 100 weight of the radical curable adhesive composition. It is preferable that it is about 10-50 weight part with respect to a part.
- the radically curable adhesive composition of the present invention may further include a photoacid generator, if necessary, and the content of the photoacid generator is about 0.5 to 10 parts by weight based on 100 parts by weight of the radical curable adhesive composition. desirable.
- the glass transition temperature of the said radical curable adhesive composition of this invention is 60 degreeC or more.
- a polarizer An adhesive layer formed on at least one surface of the polarizer; And a polarizing plate comprising a protective film formed on the adhesive layer, there is provided a polarizing plate wherein the adhesive layer is formed using the radical curable adhesive composition of the present invention described above.
- the radically curable adhesive composition of the present invention does not lower the adhesive strength even in a high humidity environment, and can be usefully applied between the polarizer having a high moisture content and the protective film.
- the polarizing plate to which the radically curable adhesive composition of the present invention is applied has excellent durability even in a high humidity high temperature environment.
- the present inventors conducted a study to develop a radically curable adhesive composition that can maintain a stable adhesion even in a high humidity environment, when using a mixture of a vinyl ether compound and a carboxylic acid compound in a compound containing a hydroxy group, even in a high humidity environment It was found that the adhesive strength did not decrease and completed the present invention.
- the radically curable adhesive composition of the present invention includes a compound represented by the following [Formula 1], a vinyl ether compound, a carboxylic acid compound containing at least one unsaturated double bond, and a radical initiator.
- R 1 is an ester group or an ether group
- R 2 is a C 1-10 alkyl group or C 4-10 cycloalkyl group having at least one hydroxy substituent
- R 3 is hydrogen or C 1-10 It is an alkyl group.
- the alkyl group may be linear or branched alkyl, and the hydroxy group may be substituted at any position in the alkyl group or the cycloalkyl group. That is, the hydroxy group may be at the end of the alkyl group or may be in the middle of the alkyl group.
- the radical curable adhesive composition of the present invention based on 100 parts by weight of the adhesive composition, 40 to 90 parts by weight of the compound represented by the above [Formula 1]; 1 to 50 parts by weight of a vinyl ether compound; 1 to 50 parts by weight of a carboxylic acid compound including at least one unsaturated double bond; And 0.5 to 10 parts by weight of a radical initiator.
- the compound represented by [Formula 1] is a component for implementing the adhesive force of the adhesive
- various compounds represented by the [Formula 1] can be used.
- the first compound is not limited thereto, but may be at least one compound selected from compounds represented by the following [Formula 2] to [Formula 9].
- the content of the compound represented by [Formula 1] is about 40 to 90 parts by weight, preferably about 50 to 80 parts by weight, more preferably about 60 to 80 parts by weight based on 100 parts by weight of the total adhesive composition. Can be. This is because when the content of the compound represented by [Formula 1] is less than 40 parts by weight, it is difficult to secure the adhesive force. When the content of the compound represented by [Formula 1] is more than 80 parts by weight, the glass transition temperature of the adhesive composition may be lowered, which may lower heat resistance.
- the vinyl ether compound is a component for imparting moisture resistance to the adhesive by forming a composite through a copolymerization reaction with a carboxylic acid compound, which will be described later, during curing of the adhesive, but is not limited thereto.
- the content of the vinyl ether compound may be about 1 to 50 parts by weight, preferably about 1 to 40 parts by weight, and more preferably about 1 to 30 parts by weight based on 100 parts by weight of the total adhesive composition.
- the content of the vinyl ether compound satisfies the numerical range, it is possible to obtain an effect of maintaining excellent adhesion in a high humidity environment.
- the carboxylic acid compound including at least one unsaturated double bond is a component for imparting moisture resistance to the adhesive by forming a complex through copolymerization with the vinyl ether compound at the time of curing the adhesive, but is not limited thereto.
- it may be one or more selected from the group consisting of maleic acid, fumaric acid, angelic acid, and tiglic acid.
- the content of the carboxylic acid compound may be about 1 to 50 parts by weight, preferably about 1 to 40 parts by weight, and more preferably about 1 to 30 parts by weight based on 100 parts by weight of the total adhesive composition.
- the content of the carboxylic acid compound satisfies the numerical range, it is possible to obtain an effect of maintaining excellent adhesion in a high humidity environment.
- the hydroxy group contained in the adhesive and the hydroxy group present on the surface of the polyvinyl alcohol-based film form hydrogen bonds to have adhesion.
- the hydroxyl group on the surface of the polyvinyl alcohol-based film forms a hydrogen bond with water, not an adhesive, and as a result, a decrease in adhesion force occurs.
- the radical curable adhesive composition according to the present invention when the adhesive is cured, a complex is formed by copolymerization of the vinyl ether compound and the carboxylic acid compound, and the carboxylic acid contained in the complex is first mixed with moisture in a high humidity environment. In order to bond, the hydrogen bond between the hydroxyl group and the adhesive agent on the surface of the polyvinyl alcohol-based film is maintained, and the fall of the adhesive force can be suppressed.
- radical initiators contained in the radical curable adhesive composition according to the present invention is for promoting radical polymerizability and improving the curing rate.
- radical initiators generally used in the art may be used without limitation, for example, 1-hydroxy-cyclohexyl-phenyl-ketone (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-hydroxy 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-2phenyl-acetoxy-ethoxy] -ethyl ester (oxy-pheny
- the content of the radical initiator is preferably about 0.5 to 10 parts by weight, 1 to 5 parts by weight or about 2 to 3 parts by weight based on 100 parts by weight of the radical curable adhesive composition. This is because when the content of the radical initiator satisfies the numerical range, the adhesive may be smoothly cured.
- the radical curable adhesive composition of this invention can further contain the compound of acid value 100-1000 mgKOH / g as needed.
- the acid value of the compound may be, for example, about 100 to 300 mgKOH / g or about 300 to 900 mgKOH / g.
- the glass transition temperature of the adhesive can be improved without lowering the adhesive strength of the adhesive, thereby providing an excellent heat resistance.
- the acid value means the number of mg of KOH necessary to completely neutralize 1 g of the sample.
- the compound having an acid value of 100 to 1000 mgKOH / g any compound having compatibility with the adhesive composition of the present invention and satisfying the acid value range may be used without limitation.
- the compound having an acid value of 100 to 1000 mgKOH / g may be at least one selected from the group consisting of compounds represented by the following [Formula 10] to [Formula 21].
- N is an integer from 1 to 5)
- the content of the compound having an acid value of 100 to 1000 mgKOH / g may be, for example, about 10 to 50 parts by weight or about 10 to 30 parts by weight based on 100 parts by weight of the radical curable adhesive composition.
- the content of the compound having an acid value of 100 to 1000 mgKOH / g satisfies the above range, both adhesion to the polarizer and heat resistance are excellent.
- the radical curable adhesive composition of this invention can contain a photo-acid generator further as needed.
- the photoacid generator is a compound that generates an acid (H +) by the active energy ray, and when the photoacid generator is additionally included, the acid value of the adhesive can be controlled through the photoacid generator, thereby improving adhesion. There is an advantage.
- Photoacid generators usable in the present invention preferably include, for example, sulfonium salts or iodonium salts.
- Specific examples of 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 (diphen
- the content of the photoacid generator may be, for example, 10 parts by weight or less, preferably 0.5 to 10 parts by weight, 1 to 6 parts by weight, or 3 to 5 parts by weight based on 100 parts by weight of the radical curable adhesive composition.
- the photoacid generator is included in the content of the numerical range in the radically curable adhesive composition according to the present invention, there is an advantage in that the adhesive force is more improved than when the photoacid generator is not included or the content is not satisfied.
- the acid value of the radical curable adhesive composition according to the present invention is preferably about 60 to 300 mgKOH / g, 80 to 200 mgKOH / g, or 100 to 150 mgKOH / g, for example.
- the acid value of the adhesive composition according to the present invention satisfies the numerical range, there is an advantage in that a polarizing plate having good heat resistance is maintained by maintaining the adhesive force with the polarizer and improving the Tg of the adhesive.
- the radical curable adhesive composition according to the present invention preferably has a glass transition temperature of about 60 to 500 °C after curing, for example, may be 60 °C to 300 °C, 80 °C to 300 °C or 90 to 200 °C. have.
- the polarizing plate manufactured using the radical curable adhesive composition according to the present invention having the glass transition temperature in the numerical range as described above has an advantage of excellent heat resistance and water resistance.
- the radical curable adhesive composition according to the present invention preferably has a viscosity of about 10 to 300 cP or about 20 to 100 cP.
- the viscosity of the adhesive composition satisfies the numerical range, the thickness of the adhesive layer may be thinly formed, and since the adhesive composition has a low viscosity, there is an excellent workability.
- the thickness of the adhesive layer formed using the radically curable adhesive composition may be 0.1 ⁇ m to 20 ⁇ m or 0.5 ⁇ m to 5 ⁇ m.
- the thickness of the adhesive layer satisfies the numerical range, there is an advantage of making a polarizing plate having excellent heat resistance.
- the radically curable adhesive composition of the present invention not only has excellent adhesion to films of various materials, but also maintains adhesion for a long time in a high humidity environment, and thus may be usefully applied to a polarizing plate.
- the radical curable adhesive composition according to the present invention has a fast curing rate and a high degree of curing, there is an advantage of improving productivity in manufacturing a polarizing plate.
- the polarizing plate of the present invention includes a polarizer, a radical curable adhesive layer formed on at least one surface of the polarizer, and a protective film formed on the adhesive layer, wherein the adhesive layer is formed using the radical curable adhesive composition according to the present invention. It is characterized by that.
- the polarizer is not particularly limited, and a film made of polyvinyl alcohol (PVA) including a polarizer well known in the art, for example, iodine or a 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 radically curable adhesive layer is formed using the radically curable adhesive composition according to the present invention described above, and may be formed by a method well known in the art.
- the adhesive composition may be applied to one surface of a protective film to form an adhesive layer, and then laminated with a polarizer and the protective film, followed by curing through active energy ray irradiation.
- the protective film is to support and protect 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
- an acryl-based film means a film containing a (meth) acrylate-based component.
- an acrylic film may be obtained by molding a molding material containing (meth) acrylate-based resin as a main component by extrusion molding. have.
- the acrylic film is a film containing an alkyl (meth) acrylate-based unit and a copolymer comprising a styrene-based unit, and an aromatic resin having a carbonate portion in the main chain, or an alkyl (meth) acrylate-based unit It may be a film comprising a styrenic unit, a 3-6 membered heterocyclic unit substituted with at least one carbonyl group, and a vinyl cyanide unit.
- the acrylic film may be a film including a (meth) acrylate resin having an aromatic ring.
- the (meth) acrylate-based resin having an aromatic ring include (a) (meth) acrylate-based units comprising (a) one or more (meth) acrylate-based derivatives described in Korean Patent Laid-Open Publication No. 10-2009-0115040; (b) an aromatic unit having a chain having an hydroxy group containing portion and an aromatic moiety; And (c) a styrene unit comprising one or more styrene derivatives.
- the units (a) to (c) may each be included in the resin composition in the form of a separate copolymer, and two or more units of the units (a) to (c) may be included in the resin composition in the form of one copolymer. have.
- the acrylic film may be a film including an acrylic 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 resin and other polymers, additives, etc. 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.
- thermoplastic resin composition is prepared by, for example, extrusion kneading the resulting mixture after preblending the film raw material with any suitable mixer such as an omni mixer.
- the mixer used for extrusion kneading is not specifically limited,
- arbitrary appropriate mixers such as an extruder, such as a single screw extruder and a twin screw extruder, and a pressurized kneader, can be used.
- molding methods such as the solution casting method (solution casting method), the melt extrusion method, the calender method, the compression molding method, are mentioned, for example.
- a solution cast method (solution casting method) and a melt extrusion method are preferable.
- solvent used for the said solution casting method For example, aromatic hydrocarbons, such as benzene, toluene, xylene; Aliphatic hydrocarbons such as cyclohexane and decalin; Esters such as ethyl acetate and butyl acetate; Ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone; Alcohols such as methanol, ethanol, isopropanol, butanol, isobutanol, methyl cellosolve, ethyl cellosolve and butyl cellosolve; Ethers such as tetrahydrofuran and dioxane; Halogenated hydrocarbons such as dichloromethane, chloroform and carbon tetrachloride; Dimethylformamide; Dimethyl sulfoxide, etc. are mentioned. These solvents may be used independently or may use 2 or more types together.
- melt extrusion method As an apparatus for performing the said solution casting method (solution casting method), a drum type casting machine, a band type casting machine, a spin coater, etc. are mentioned, for example.
- melt extrusion method include a T-die method and an inflation method. Molding temperature becomes like this. Preferably it is 150-350 degreeC, More preferably, it is 200-300 degreeC.
- a T die When forming a film by the said T die method, a T die can be attached to the front-end
- the acrylic film may be any of an unoriented film or a stretched film.
- 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.
- biaxial stretching the mechanical strength is improved and the film performance is improved.
- an acryl-type film can suppress an increase of retardation even when extending
- stretching temperature is a range near the glass transition temperature of the thermoplastic resin composition which is a film raw material, Preferably it is (glass transition temperature -30 degreeC)-(glass transition temperature +100 degreeC), More preferably, it is (glass transition Temperature -20 ° C) to (glass transition temperature + 80 ° C). If the stretching temperature is less than (glass transition temperature -30 ° C), there is a fear that a sufficient stretching ratio may not be obtained. On the contrary, when extending
- the draw ratio defined by area ratio becomes like this. Preferably it is 1.1-25 times, More preferably, it is 1.3-10 times. If the draw ratio is less than 1.1 times, there is a fear that it does not lead to the improvement of the toughness accompanying stretching. When a draw ratio exceeds 25 times, there exists a possibility that the effect by raising a draw ratio may not be recognized.
- the stretching speed is preferably 10 to 20,000% / min, more preferably 100 to 10,000% / min in one direction. If the stretching speed is less than 10% / min, it takes a long time to obtain a sufficient draw ratio, there is a fear that the manufacturing cost increases. When the stretching speed exceeds 20,000% / min, breakage of the stretched film may occur.
- the acrylic film may be subjected to heat treatment (annealing) or the like after the stretching treatment in order to stabilize its optical isotropy and mechanical properties.
- the heat treatment conditions are not particularly limited and may employ any suitable conditions known in the art.
- the acrylic film may be subjected to a surface treatment to improve the adhesion if necessary, for example, at least one surface treatment selected from the group consisting of alkali treatment, corona treatment, and plasma treatment on at least one surface of the optical film. Can be performed.
- the polarizing plate of the present invention as described above can be usefully applied to an optical device such as a liquid crystal display device.
- the optical device 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, and 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 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.
- Adhesive composition B was prepared by mixing 5 parts by weight of diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- Adhesive composition D was prepared by mixing 5 parts by weight of diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- composition F was prepared by mixing 5 parts by weight of diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- Adhesive composition H was prepared by mixing 5 parts by weight of (4-phenylthio) phenylsulfonium hexafluorophosphate).
- Adhesive composition J was prepared by mixing 5 parts by weight of diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- Adhesive composition L was prepared by mixing 5 parts by weight of diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- composition P was prepared by mixing 5 parts by weight of sulfonium hexafluorophosphate (Diphenyl (4-phenylthio) phenylsulfonium
- Adhesive composition R was prepared by mixing 5 parts by weight of phenylsulfonium hexafluorophosphate (Diphenyl (4-phenylthio) phenylsulfonium hexafluorophosphate).
- Adhesive composition S was prepared by mixing 3 parts by weight of 4,6-trimethylbenzoyl) -phosphine oxide.
- the adhesive composition A prepared in Preparation Example 2 was applied to the primer layer of the acrylic film-based protective film prepared in Preparation Example 1, laminated on both sides of the PVA device, and the thickness of the final adhesive layer was 1 to 2 ⁇ m. After setting conditions so that it might become, it passed the laminator. Then, using a UV irradiation device (fusion lamp, D bulb) to the surface on which the acrylic film is laminated, by irradiating ultraviolet light of 900mJ / cm 2 to prepare a polarizing plate.
- the polarizing plate was manufactured in a constant temperature and humidity environment with a temperature of 20 ° C. and a humidity of 50%.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition B prepared according to Preparation Example 3 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition C prepared according to Preparation Example 4 instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition D prepared according to Preparation Example 5 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except that the adhesive composition F prepared according to Preparation Example 7 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition G prepared according to Preparation Example 8 instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition H prepared in Preparation Example 9 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition I prepared in Preparation Example 10 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition J prepared in Preparation Example 11 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition K prepared according to Preparation Example 12 instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition L prepared in Preparation Example 13 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition M prepared in Preparation Example 14 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition N prepared according to Preparation Example 15 instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition O prepared in Preparation Example 16 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition P prepared according to Preparation Example 17 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition Q prepared in Preparation Example 18 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1, except that the adhesive composition R prepared in Preparation Example 19 was used instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition S prepared according to Preparation Example 20 instead of the adhesive composition A.
- a polarizing plate was manufactured in the same manner as in Example 1 except for using the adhesive composition T prepared according to Preparation Example 21 instead of the adhesive composition A.
- peeling experiments were performed. Peeling experiment evaluated the adhesive force by measuring the peeling force at the time of peeling at 300 mm / min and 90 degree
- the peeling force is very excellent when more than 3.0N / cm, 2.0N / cm or more less than 3.0N / cm as excellent, 1.0N / cm or more 2.0N / cm
- the case below was good, and the case below 0.5 N / cm ⁇ and below 1.0 N / cm was shown as bad, and the case below 0.5 N / cm was shown as very bad.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
구분 | 접착제 조성물 | 접착력 |
실시예 1 | A | 매우 우수 |
실시예 2 | B | 우수 |
실시예 3 | C | 우수 |
실시예 4 | D | 우수 |
실시예 5 | E | 우수 |
실시예 6 | F | 우수 |
실시예 7 | G | 양호 |
실시예 8 | H | 양호 |
실시예 9 | I | 양호 |
실시예 10 | J | 양호 |
실시예 11 | K | 양호 |
실시예 12 | L | 양호 |
실시예 13 | M | 양호 |
실시예 14 | N | 양호 |
실시예 15 | O | 양호 |
실시예 16 | P | 양호 |
실시예 17 | Q | 우수 |
실시예 18 | R | 우수 |
비교예 1 | S | 매우 나쁨 |
비교예 2 | T | 나쁨 |
Claims (11)
- 제1항에 있어서,상기 라디칼 경화형 접착제 조성물 100 중량부에 대하여,상기 [화학식 1]로 표시되는 화합물 40 내지 90중량부;비닐 에테르계 화합물 1 내지 50중량부;적어도 하나 이상의 불포화 이중 결합을 포함하는 카르복시산 화합물 1 내지 50 중량부; 및라디칼 개시제 0.5 내지 10중량부를 포함하는 라디칼 경화형 접착제 조성물.
- 제1항에 있어서,상기 비닐 에테르계 화합물은 에틸렌글리콜 모노비닐에테르, 1,4-부탄올비닐에테르, 디(에틸렌글리콜)디비닐에테르, 트리(에틸렌글리콜)디비닐에테르, tert-부틸 비닐에테르, 1-(비닐옥시)-2,2-비스((비닐옥시)메틸)부탄, 1,3-비스(비닐옥시)-2,2-비스((비닐옥시)메틸)프로판 및 사이클로헥실 비닐에테르로 이루어진 군으로부터 선택된 1종 이상인 라디칼 경화형 접착제 조성물.
- 제1항에 있어서,상기 적어도 하나 이상의 불포화 이중 결합을 포함하는 카르복시산 화합물은 말레산, 푸마르산, 안젤산 및 티글린산으로 이루어진 군으로부터 선택된 1종 이상인 라디칼 경화형 접착제 조성물.
- 제1항에 있어서,상기 라디칼 경화형 접착제 조성물은 산가 100 내지 1000mgKOH/g인 화합물을 더 포함하는 것인 라디칼 경화형 접착제 조성물.
- 제6항에 있어서,상기 산가 100 내지 1000mgKOH/g인 화합물은 라디칼 경화형 접착제 조성물 100중량부에 대하여 10 내지 50중량부의 함량으로 포함되는 것인 라디칼 경화형 접착제 조성물.
- 제1항에 있어서,광산 발생제를 더 포함하는 것인 라디칼 경화형 접착제 조성물.
- 제1항에 있어서,상기 라디칼 경화형 접착제 조성물의 유리전이온도는 60℃ 내지 500℃인 라디칼 경화형 접착제 조성물.
- 편광자;상기 편광자의 적어도 일면에 형성되는 접착제층; 및상기 접착제층 상에 형성되는 보호 필름을 포함하는 편광판으로,상기 접착제층은 상기 제1항 내지 제10항 중 어느 한 항의 라디칼 경화형 접착제 조성물을 이용하여 형성된 것인 편광판.
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CN201480000910.8A CN104685019B (zh) | 2013-09-30 | 2014-06-16 | 可自由基固化粘合剂组合物和包含其的偏光板 |
JP2016518732A JP6290386B2 (ja) | 2013-09-30 | 2014-06-16 | ラジカル硬化型接着剤組成物及びこれを含む偏光板 |
US14/385,928 US9550918B2 (en) | 2013-09-30 | 2014-06-16 | Radically curable adhesive composition and polarizing plate including the same |
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KR1020140066464A KR101620164B1 (ko) | 2013-09-30 | 2014-05-30 | 라디칼 경화형 접착제 조성물 및 이를 포함하는 편광판 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020056447A (ko) * | 2000-12-29 | 2002-07-10 | 성재갑 | 편광판용 아크릴계 점착제 조성물 |
JP2011076058A (ja) * | 2009-09-04 | 2011-04-14 | Toyo Ink Mfg Co Ltd | 偏光板及び偏光板形成用光硬化性接着剤 |
KR20120044234A (ko) * | 2010-09-20 | 2012-05-07 | 주식회사 엘지화학 | 편광판용 접착제, 이를 포함하는 편광판 및 이의 제조방법 |
KR20130040725A (ko) * | 2011-10-14 | 2013-04-24 | 주식회사 엘지화학 | 편광판용 접착제 및 이를 포함하는 편광판 |
KR20130103290A (ko) * | 2012-03-09 | 2013-09-23 | 제일모직주식회사 | 편광판용 접착제 조성물 및 이를 이용한 편광판 |
-
2014
- 2014-06-16 WO PCT/KR2014/005252 patent/WO2015046714A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020056447A (ko) * | 2000-12-29 | 2002-07-10 | 성재갑 | 편광판용 아크릴계 점착제 조성물 |
JP2011076058A (ja) * | 2009-09-04 | 2011-04-14 | Toyo Ink Mfg Co Ltd | 偏光板及び偏光板形成用光硬化性接着剤 |
KR20120044234A (ko) * | 2010-09-20 | 2012-05-07 | 주식회사 엘지화학 | 편광판용 접착제, 이를 포함하는 편광판 및 이의 제조방법 |
KR20130040725A (ko) * | 2011-10-14 | 2013-04-24 | 주식회사 엘지화학 | 편광판용 접착제 및 이를 포함하는 편광판 |
KR20130103290A (ko) * | 2012-03-09 | 2013-09-23 | 제일모직주식회사 | 편광판용 접착제 조성물 및 이를 이용한 편광판 |
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