WO2015080456A1 - 점착제 조성물 - Google Patents
점착제 조성물 Download PDFInfo
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- WO2015080456A1 WO2015080456A1 PCT/KR2014/011402 KR2014011402W WO2015080456A1 WO 2015080456 A1 WO2015080456 A1 WO 2015080456A1 KR 2014011402 W KR2014011402 W KR 2014011402W WO 2015080456 A1 WO2015080456 A1 WO 2015080456A1
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- pressure
- sensitive adhesive
- block
- adhesive composition
- weight
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/80—Masked polyisocyanates
- C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
- C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
- C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
- C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
- C08G18/8029—Masked aromatic polyisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
- C08G59/4028—Isocyanates; Thioisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/062—Copolymers with monomers not covered by C08L33/06
- C08L33/066—Copolymers with monomers not covered by C08L33/06 containing -OH groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1515—Three-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
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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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
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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
Definitions
- the present application relates to an adhesive composition, an optical member, a polarizing plate, and a display device.
- a liquid crystal display device (hereinafter referred to as "LCD device"), which is a typical large display device, typically includes a liquid crystal panel and an optical film containing a liquid crystal component injected between two transparent substrates. do.
- an optical film there exists a polarizing film, retardation film, a brightness improving film, etc., and the adhesive for optical films is used in many cases, in order to laminate
- the main physical properties required in the pressure-sensitive adhesive composition for an optical film include cohesive force, adhesive force, reworkability, low light leakage property, stress relaxation property, and the like.
- the adhesive composition for achieving the above physical properties is proposed.
- the above patent documents do not pay attention to the adhesiveness between the pressure-sensitive adhesive layer and the optical film.
- Patent Document 1 Republic of Korea Patent No. 1023839
- Patent Document 2 Republic of Korea Patent No. 1171976
- Patent Document 3 Republic of Korea Patent No. 1171977
- the present application provides an adhesive composition, an optical member, a polarizing plate, and a display device.
- Exemplary pressure-sensitive adhesive composition contains a block copolymer.
- block copolymer may refer to a copolymer including blocks of different polymerized monomers.
- the block copolymer may include a first block having a glass transition temperature of 50 ° C. or more and a second block having a glass transition temperature of ⁇ 10 ° C. or less.
- the "glass transition temperature of a predetermined block" of a block copolymer may mean a glass transition temperature measured or calculated from a polymer formed only of monomers included in the block.
- the glass transition temperature of the first block may be, for example, 60 ° C or higher, 65 ° C or higher, or 70 ° C or higher.
- the upper limit of the glass transition temperature of the first block is not particularly limited, and may be, for example, about 150 ° C, 140 ° C, 130 ° C or 120 ° C.
- the glass transition temperature of the second block may be, for example, -20 ° C or less, -30 ° C or less, -35 ° C or less, or -40 ° C or less.
- the lower limit of the glass transition temperature of the second block is not particularly limited and may be, for example, about -80 ° C, -70 ° C, -60 ° C, -55 ° C, or -50 ° C.
- the block copolymer including the first and second blocks having a glass transition temperature in the above range may form an appropriate fine phase separation structure in the pressure-sensitive adhesive, and the pressure-sensitive adhesive including the phase separation structure may have an appropriate level of cohesion and stress relaxation property. It has excellent durability, light leakage prevention and reworkability.
- the molecular weight of the first block in the block copolymer, can be controlled.
- the number average molecular weight (M n ) of the first block may be adjusted within a range of 2,500 to 100,000.
- the term "number average molecular weight of the first block" may mean, for example, the number average molecular weight of a polymer produced by polymerizing only the monomer forming the first block.
- the number average molecular weight mentioned in this specification can be measured by a conventional method using, for example, GPC (Gel Permeation Chromatograph).
- the number average molecular weight of the first block may be about 5,000 to 75,000 or 10,000 to 50,000 in another example.
- the first block has a molecular weight distribution (PDI; Mw / Mn), that is, a ratio (Mw / Mn) of weight average molecular weight (Mw) and number average molecular weight (Mn) of 1.0 to 2.0, 1.1 to 1.75, or 1.2 to 1.5. It may be within a range of degrees.
- the block copolymer may have a number average molecular weight of 10,000 to 300,000.
- the number average molecular weight of the block copolymer may be about 25,000 to 250,000, 50,000 to 200,000 or 75,000 to 180,000 in another example.
- the block copolymer may have a molecular weight distribution in the range of about 1.0 to 2.5, 1.2 to 2.5 or 1.4 to 2.5.
- the block copolymer may be a crosslinkable copolymer having a crosslinkable functional group.
- crosslinkable functional group may mean a functional group capable of reacting with at least the functional group of the multifunctional crosslinking agent described later as a functional group provided to the side chain, the terminal, or the like of the polymer.
- a crosslinkable functional group a hydroxyl group, a carboxyl group, an isocyanate group, a glycidyl group, etc. can be illustrated.
- a hydroxy group or a carboxyl group is used, and a hydroxy group may be suitably used in the present application, but is not limited thereto.
- the crosslinkable functional group when included in the block copolymer, the crosslinkable functional group may be included in, for example, a block having a relatively low glass transition temperature, that is, a second block.
- the crosslinkable functional group may not be included in the first block but may be included only in the second block.
- the crosslinkable functional group is included in the second block having a relatively low glass transition temperature, it is possible to form an adhesive that exhibits appropriate cohesion force and stress relaxation property and maintains excellent physical properties such as durability, light leakage resistance, and reworkability. have.
- the type of monomers forming the first block and the second block in the block copolymer is not particularly limited as long as the above glass transition temperature is secured by the combination of the monomers.
- the first block may comprise, for example, polymerized units derived from methacrylic acid ester monomers.
- “monomer is contained in a polymer or a block in a polymerized unit” may mean that the monomer forms a backbone, for example, a main chain or a side chain of the polymer or block through a polymerization reaction.
- methacrylic acid ester monomer an alkyl (meth) acrylate can be used, for example.
- alkyl (meth) acrylate having an alkyl group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms, or 1 to 4 carbon atoms can be used.
- the alkyl group may be linear, branched or cyclic.
- Such monomers include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, t-butyl (meth) Acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (meth) acrylate, isobor Nilyl (meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate or lauryl (meth) acrylate, etc. may be exemplified, and the glass transition temperature is secured to one or more of the above. It can be selected to use.
- a methacrylic acid ester monomer such as alkyl methacrylate, for example, 1 to 20 carbon atoms, 1 to 16 carbon atoms Alkyl methacrylate having an alkyl group having 1 to 12, 1 to 8 carbon atoms or 1 to 4 carbon atoms can be used.
- the second block may include, for example, 90 parts by weight to 99.9 parts by weight of polymerized units of alkyl (meth) acrylate and 0.1 parts by weight to 10 parts by weight of polymerized units of the copolymerizable monomer having a crosslinkable functional group.
- the unit "parts by weight” may mean a ratio of weight between components.
- the second block includes 90 parts by weight to 99.9 parts by weight of polymerized units of alkyl (meth) acrylate and 0.1 parts by weight to 10 parts by weight of polymerized units of the copolymerizable monomer having a crosslinkable functional group.
- the ratio (A: B) based on the weight of the alkyl (meth) acrylate (A) and the copolymerizable monomer (B) which has a crosslinkable functional group which forms the polymerized unit of is 90-99.9: 0.1-10 It may mean.
- the physical properties of the pressure-sensitive adhesive, such as adhesion and durability in the range of this weight ratio can be maintained excellent.
- the glass transition temperature in the above-described range can be secured finally through copolymerization with the copolymerizable monomer among the monomers included in the first block.
- kinds of monomers can be selected and used.
- the alkyl (meth) acrylate forming the second block in consideration of the ease of glass transition temperature control and the like is, for example, 1 to 20 carbon atoms, 1 to 16 carbon atoms, among the monomers described above.
- Alkyl (meth) acrylate which has a C1-C12, C1-C8, or C1-C4 alkyl group can be used.
- copolymerizable monomer which has a crosslinkable functional group which forms a 2nd block it has a site
- the compound which has a functional group can be used.
- Copolymerizable monomers having such crosslinkable functional groups are variously known in the field of pressure-sensitive adhesives, and all of these monomers may be used in the polymer.
- a copolymerizable monomer which has a hydroxyl group 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxy Hydroxyalkyl (meth) acrylates such as hexyl (meth) acrylate or 8-hydroxyoctyl (meth) acrylate, or 2-hydroxyethylene glycol (meth) acrylate or 2-hydroxypropylene glycol (meth) Hydroxyalkylene glycol (meth) acrylate, such as an acrylate, etc.
- first block and / or the second block may further include any other comonomer if necessary, for example, for the control of the glass transition temperature, and the monomer may be included as a polymerization unit.
- the monomer may be included as a polymerization unit.
- it is (meth) acrylonitrile, (meth) acrylamide, N-methyl (meth) acrylamide, N-butoxy methyl (meth) acrylamide, N-vinyl pyrrolidone, or N-vinyl capro Nitrogen-containing monomers such as lactams and the like; Styrene-based monomers such as styrene or methyl styrene; Glycidyl group-containing monomers such as glycidyl (meth) acrylate; Or carboxylic acid vinyl esters such as vinyl acetate, but are not limited thereto.
- Such comonomers may be included in the polymer by selecting one or more kinds thereof as necessary. Such comonomers may be included in the block copolymer, for example, in a ratio of 20 parts by weight or less, or 0.1 to 15 parts by weight, relative to the weight of other monomers in each block copolymer.
- the block copolymer may include 1 part by weight to 30 parts by weight of the first block and 70 parts by weight to 99 parts by weight of the second block.
- the ratio of the weight between the first block and the second block is not particularly limited, the ratio of the weight between the blocks may be adjusted in the same manner as the above ratio to provide an adhesive composition and an adhesive having excellent physical properties.
- the block copolymer may be, in another example, 5 parts by weight to 30 parts by weight of the first block and 70 parts by weight to 95 parts by weight of the second block, or 5 parts by weight to 15 parts by weight of the first block and 85 parts by weight to 95 parts by weight of the second block. It may include parts by weight.
- the block copolymer may be a diblock copolymer consisting of the first and second blocks, that is, a block copolymer including only two blocks of the first and second blocks.
- a diblock copolymer By using a diblock copolymer, the durability, stress relaxation property, and reworkability of an adhesive can be maintained more excellently.
- the method for producing the block copolymer is not particularly limited and can be prepared in a conventional manner.
- the block copolymer may be polymerized by, for example, LRP (Living Radical Polymerization), for example, an organic rare earth metal complex may be used as a polymerization initiator, or an organic alkali metal compound may be used as a polymerization initiator.
- LRP Living Radical Polymerization
- an organic rare earth metal complex may be used as a polymerization initiator
- an organic alkali metal compound may be used as a polymerization initiator.
- ATRP Atomic radical polymerization
- the pressure-sensitive adhesive composition may include one or more selected from the group consisting of an epoxy compound and an aziridine compound.
- the compound may be, for example, a multifunctional compound. That is, in the above, the epoxy compound means a compound having at least one glycidyl group, and the polyfunctional epoxy compound means a compound including at least two, for example, two to five glycidyl groups. Can be.
- the aziridine compound means an aziridine or aziridine derivative
- the polyfunctional aziridine compound may mean a compound including two, for example, two to five aziridine rings or aziridine derivative rings. Can be.
- Such a compound can greatly contribute to the improvement of the adhesiveness of an optical film, especially the optical film which a carboxyl group exists in the surface, and an adhesive layer as mentioned later.
- the carboxyl group on the surface of the optical film may be a material included in the optical film itself, or artificially introduced by a method such as corona treatment.
- epoxy compound for example, ethylene glycol diglycidyl ether, triglycidyl ether, trimethylolpropane triglycidyl ether, N, N, N ', N'- tetraglycidyl ethylenediamine or glycerin di
- glycidyl ether ethylene glycol diglycidyl ether, triglycidyl ether, trimethylolpropane triglycidyl ether, N, N, N ', N'- tetraglycidyl ethylenediamine or glycerin di
- aziridine compound examples include N, N'-toluene-2,4-bis (1-aziridinecarboxamide), N, N'-diphenylmethane-4,4'-bis (1-aziridinecarboxamide), triethylenemelamine, bisisoprotaloyl-1- (2-methylaziridine) or tri-1-aziridinyl
- phosphine oxide One kind or two or more kinds such as phosphine oxide may be used, but is not limited thereto.
- the epoxy compound or the aziridine compound may be included, for example, in an amount of 0.001 to 10 parts by weight, 0.01 to 5 parts by weight, or 0.025 to 2.5 parts by weight relative to 100 parts by weight of the block copolymer.
- this ratio is not particularly limited, and can be appropriately adjusted in consideration of the amount of carboxyl groups present on the surface of an optical film or the like.
- the pressure-sensitive adhesive composition may further include a crosslinking agent.
- a crosslinking agent the compound which has at least 2 functional groups which can react with the crosslinkable functional group of a block copolymer, for example, about 2-5, can be used.
- the kind of the multifunctional crosslinking agent may be selected in consideration of the kind of the crosslinkable functional group present in the block copolymer, and for example, a polyfunctional isocyanate compound, that is, two or more isocyanate groups, for example, two to The compound which has about five can be used.
- isocyanate compound For example, diisocyanate compounds, such as tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isoborone diisocyanate, tetramethyl xylene diisocyanate, or naphthalene diisocyanate, or the said A compound obtained by reacting a diisocyanate compound with a polyol can be used.
- the polyol for example, trimethylol propane can be used.
- the multifunctional crosslinking agent may be included in the pressure-sensitive adhesive composition in an amount of 0.01 parts by weight to 10 parts by weight, 0.01 parts by weight to 5 parts by weight, or 0.01 parts by weight to 1 parts by weight with respect to 100 parts by weight of the block copolymer.
- the ratio may be appropriately changed in consideration of the desired degree of crosslinking, cohesion, adhesion and durability.
- the pressure-sensitive adhesive composition may further include a silane coupling agent.
- a silane coupling agent for example, a silane coupling agent having a beta-cyano group or an acetoacetyl group can be used.
- Such a silane coupling agent can make the pressure-sensitive adhesive formed by a copolymer having a low molecular weight, for example, exhibit excellent adhesion and adhesion stability, and can also maintain excellent durability and the like in heat and moisture resistant conditions. .
- silane coupling agent which has a beta-cyano group or an acetoacetyl group
- the compound represented by following formula (1) or (2) can be used, for example.
- R 1 is a beta-cyanoacetyl group or a beta-cyanoacetylalkyl group
- R 3 is an acetoacetyl group or acetoacetylalkyl group
- R 2 is an alkoxy group
- n is 1 to 3 Is the number of.
- the alkyl group may be an alkyl group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms or 1 to 4 carbon atoms, and the alkyl group may be linear, branched or cyclic. have.
- the alkoxy group may be an alkoxy group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms or 1 to 4 carbon atoms, and the alkoxy group may be linear, branched or cyclic. have.
- N in Formula 1 or 2 may be, for example, 1 to 3, 1 to 2, or 1.
- Examples of the compound represented by the formula (1) or (2) include acetoacetylpropyl trimethoxy silane, acetoacetylpropyl triethoxy silane, beta-cyanoacetylpropyl trimethoxy silane, beta-cyanoacetylpropyl triethoxy silane, and the like. It may be illustrated, but is not limited thereto.
- the silane coupling agent may be included in an amount of 0.01 parts by weight to 5 parts by weight or 0.01 parts by weight to 1 parts by weight based on 100 parts by weight of the block copolymer, and may effectively impart desired properties to the pressure-sensitive adhesive within this range.
- the pressure-sensitive adhesive composition may further contain a tackifier as necessary.
- a tackifier for example, a hydrocarbon resin or a hydrogenated substance thereof, a rosin resin or a hydrogenated substance thereof, a rosin ester resin or a hydrogenated substance thereof, a terpene resin or a hydrogenated substance thereof, a terpene phenol resin or a hydrogenated substance thereof, a polymerized rosin resin or One kind or a mixture of two or more kinds such as a polymerized rosin ester resin may be used, but is not limited thereto.
- the tackifier may be included in the pressure-sensitive adhesive composition in an amount of 100 parts by weight or less based on 100 parts by weight of the block copolymer.
- the pressure-sensitive adhesive composition may also further comprise one or more additives selected from the group consisting of curing agents, ultraviolet stabilizers, antioxidants, colorants, reinforcing agents, fillers, antifoaming agents, surfactants and plasticizers, if desired.
- the pressure-sensitive adhesive composition can be used for various applications. Representative applications include, but are not limited to, application to optical films and the like. Application to the optical film in the above, for example, may mean a pressure-sensitive adhesive composition that can be used for the purpose of laminating the optical film to each other, or to attach the optical film or a laminate thereof to other parts such as a liquid crystal panel. .
- the present application may be, for example, for an adhesive optical member.
- the pressure-sensitive adhesive optical member may include an optical film and a pressure-sensitive adhesive layer formed on at least one surface of the optical film.
- the pressure-sensitive adhesive layer is formed by the pressure-sensitive adhesive composition described above, and may include, for example, the pressure-sensitive adhesive composition having a crosslinked structure.
- the kind of optical film that can be included in the adhesive optical member is not particularly limited, and examples thereof include polarizing plates, polarizers, polarizer protective films, protective films of optical films, retardation films, viewing angle compensation films, brightness enhancement films, and the like.
- polarizer and polarizer refer to objects that are distinguished from each other. That is, the polarizer refers to the film, sheet or device itself exhibiting a polarizing function, and the polarizing plate means an optical element including other elements together with the polarizer.
- a polarizer protective film or a retardation layer may be exemplified, but is not limited thereto.
- a carboxyl group may be present on the surface of the optical film included in the optical member.
- the pressure-sensitive adhesive layer may be attached to the surface where the carboxyl group exists.
- the carboxyl group may be naturally present on the surface depending on the type of the optical film.
- the carboxyl groups on the surface of the optical film may be artificially introduced by corona treatment. Accordingly, a corona treatment layer may be present between the optical film of the optical member and the pressure sensitive adhesive layer, and the pressure sensitive adhesive layer may be attached to the corona treatment layer.
- Corona treatment is a treatment method of increasing wettability on a surface to be treated by high frequency electric discharge.
- the corona treatment may be performed by irradiating the surface to be treated with corona generated by applying a high frequency high voltage between two electrodes.
- a functional group such as a hydroxyl group or a carboxyl group may be introduced to the surface.
- the method of performing corona treatment is not specifically limited, The general method in this field can be used without a restriction.
- the present application also relates to a polarizer; And it relates to a pressure-sensitive adhesive polarizing plate comprising a pressure-sensitive adhesive layer formed on one surface of the polarizer.
- the pressure-sensitive adhesive layer is formed by the pressure-sensitive adhesive composition described above, and may include, for example, the pressure-sensitive adhesive composition having a crosslinked structure.
- the kind of polarizer contained in a polarizing plate is not specifically limited,
- the polarizer is a functional film capable of extracting only light vibrating in one direction from incident light while vibrating in various directions.
- a polarizer may be, for example, a form in which a dichroic dye is adsorbed in a polyvinyl alcohol-based resin film.
- Polyvinyl alcohol-type resin which comprises a polarizer can be obtained by gelatinizing polyvinylacetate-type resin, for example.
- the polyvinylacetate resin which can be used may include not only a homopolymer of vinyl acetate but also a copolymer of vinyl acetate and other monomers copolymerizable with the above.
- Examples of the monomer copolymerizable with vinyl acetate include unsaturated carboxylic acids, olefins, vinyl ethers, unsaturated sulfonic acids, and a mixture of one or two or more kinds of acrylamides having an ammonium group, but are not limited thereto. no.
- the degree of gelation of the polyvinyl alcohol-based resin is usually 85 mol% to 100 mol%, preferably 98 mol% or more.
- the polyvinyl alcohol-based resin may be further modified, for example, polyvinyl formal or polyvinyl acetal modified with aldehydes may be used.
- the degree of polymerization of the polyvinyl alcohol-based resin may be about 1,000 to 10,000 or about 1,500 to 5,000.
- the polarizer is a step of stretching (ex. Uniaxial stretching) the polyvinyl alcohol resin film as described above, a step of dyeing the polyvinyl alcohol resin film with a dichroic dye, adsorbing the dichroic dye, and a dichroic dye adsorbed.
- the polyvinyl alcohol-based resin film can be produced through a process of treating with a boric acid aqueous solution and a process of washing with water after treating with a boric acid aqueous solution.
- the dichroic dye iodine or a dichroic organic dye may be used.
- the polarizing plate may further include a protective film attached to one side or both sides of the polarizer, in which case, the pressure-sensitive adhesive layer may be formed on one side of the protective film.
- the type of protective film is not particularly limited, and includes, for example, a cellulose film such as triacetyl cellulose (TAC); Polyester film such as polycarbonate film or PET (poly (ethylene terephthalet)); Polyether sulfone-based film; Or a film having a laminated structure of one layer or two or more layers, such as a polyethylene film, a polypropylene film, or a polyolefin-based film produced using a resin having a cyclo or norbornene structure, an ethylene-propylene copolymer, or the like.
- a cellulose film such as TAC can be used.
- a carboxyl group may exist in the surface of a protective film, and the adhesive layer may be attached to the surface. That is, in the polarizing plate, a polarizer protective film having a carboxyl group exists on the surface between the polarizer and the pressure sensitive adhesive layer, and the pressure sensitive adhesive layer may be attached to the surface of the protective film having the carboxyl group.
- such a carboxyl group may be one in which a protective film is included in itself, or may be introduced by corona treatment or the like. Accordingly, in the polarizing plate, a polarizer protective film having a corona treatment layer may be present between the polarizer and the pressure sensitive adhesive layer, and the pressure sensitive adhesive layer may be attached to the corona treatment layer.
- the method of forming a corona treatment layer in a protective film in the above is not specifically limited.
- the polarizer may also further include one or more functional layers selected from the group consisting of protective layers, reflective layers, antiglare layers, retardation plates, wide viewing angle compensation films, and brightness enhancement films.
- the method of forming the pressure-sensitive adhesive layer on the polarizing plate or the optical member is not particularly limited, and for example, a method of directly coating and curing the pressure-sensitive adhesive composition to realize a crosslinked structure or releasing treatment of a release film After coating and curing the pressure-sensitive adhesive composition on the surface to form a crosslinked structure, such a method of transferring it may be used.
- the method of coating the pressure-sensitive adhesive composition is not particularly limited, and for example, a method of applying the pressure-sensitive adhesive composition by conventional means such as a bar coater may be used.
- the multifunctional crosslinking agent included in the pressure-sensitive adhesive composition is preferably controlled from the crosslinking reaction of the functional group from the viewpoint of performing a uniform coating process, whereby the crosslinking agent crosslinks in the curing and aging process after the coating operation.
- the cohesive force of the pressure-sensitive adhesive may be improved, and adhesive properties and cuttability may be improved.
- the coating process is also preferably carried out after sufficiently removing the bubble-inducing components such as volatile components or reaction residues in the pressure-sensitive adhesive composition, so that the crosslinking density or molecular weight of the pressure-sensitive adhesive is too low to lower the elastic modulus, at a high temperature Bubbles existing between the glass plate and the adhesive layer may be increased to prevent a problem of forming scatterers therein.
- the present application also relates to a display device, for example an LCD device.
- the display device may include, for example, the above-mentioned optical member or polarizing plate.
- the display device is an LCD
- the device may include a liquid crystal panel and the polarizing plate or the optical member attached to one side or both sides of the liquid crystal panel.
- the polarizing plate or the optical member may be attached to the liquid crystal panel by the adhesive described above.
- liquid crystal panels applied to LCDs include passive matrix panels such as twisted nematic (TN) type, super twisted nematic (STN) type, ferroelectic (F) type, or 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.
- passive matrix panels such as twisted nematic (TN) type, super twisted nematic (STN) type, ferroelectic (F) type, or 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
- types of upper and lower substrates such as color filter substrates or array substrates in LCDs are not particularly limited, and configurations known in the art can be employed without limitation.
- the pressure-sensitive adhesive composition according to the present application is excellent in various physical properties such as coating property and durability, and can also form an pressure-sensitive adhesive that can maintain the physical properties stably for a long time.
- the pressure-sensitive adhesive composition in particular, can be applied to various optical films to form a pressure-sensitive adhesive layer exhibiting excellent adhesion with the optical film, and when applied to a polarizing plate can effectively prevent the bending characteristics.
- Mn number average molecular weight
- PDI molecular weight distribution
- the bending characteristic of the polarizing plate was measured in the following order.
- the specimen is prepared to have a width of about 35 mm and a length of about 400 mm by lengthening the MD (machine direction) direction of the polarizing plate coated with the coating liquid (adhesive composition) prepared in Examples and Comparative Examples.
- Samples were prepared by attaching the specimen prepared in 2) to the center of the STN soda lime glasses prepared in 1) using a laminator.
- the measured degree of warpage ( ⁇ W) was expressed by the following formula and evaluated according to the following criteria.
- the glass transition temperature (Tg) of each block of the block copolymer was calculated according to the following formula.
- Wn is a weight fraction of the monomer used in each block and the like, and Tn represents a glass transition temperature that appears when the monomer used forms a homopolymer.
- the right side of the above formula is the sum of the calculated values after calculating all the monomers (Wn / Tn) divided by the glass transition temperature when the monomer forms the homopolymer (Wn / Tn). to be.
- MMA Conversion Rate (%) 100 ⁇ B / (A + B)
- A is the area of the peak derived from the methyl group derived from the MMA contained in the polymer in the 1H-NMR spectrum (approximately 3.4 ppm to 3.7 ppm)
- B is the peak derived from the methyl group of the unpolymerized MMA (3.7 ppm). Area). That is, the conversion rate of the monomer was calculated in consideration of the shift position of the methyl group peak in the structure of the MMA.
- the ratio of the 1st and 2nd block of a block copolymer is a following formula based on the ratio of methyl methacrylate (MMA) and butyl acrylate (BA) which are the main monomers used in forming a 1st block and a 2nd block. Calculated based on
- % Content of MMA in block copolymer 100 x MMA peak area / BA peak area
- the MMA peak area is the area value per 1 H proton of the 3.4 to 3.7 ppm peak in 1 H-NMR (a peak observed by -CH 3 derived from MMA), and the BA peak area is 3.8 to 4.2 ppm in 1 H-NMR. Area value per 1 H proton of the near peak (the peak observed by -OCH 2 -present in the polymer formed by BA).
- the weight ratio of the first and second blocks was calculated by calculating the relative values of the -CH 3 peak of the MMA structure and the -OCH 2 -peak of the polymer formed from BA.
- EBiB ethyl 2-bromoisobutyrate
- MMA methyl methacrylate
- EAc ethyl acetate
- the flask containing the mixture was sealed with a rubber membrane, purged with nitrogen at about 25 ° C. for about 30 minutes, and dissolved oxygen was removed by bubbling. Thereafter, 0.002 g of CuBr 2 , 0.005 g of tris (2-pyridylmethyl) amine) and 0.017 g of V-65 (2,2'-azobis (2,4-dimethyl valeronitrile)) were added to the deoxygenated mixture.
- the reaction was started by immersing in a reactor at about 67 ° C. (polymerization of the first block).
- a mixture of 155 g of butyl acrylate (BA), 0.8 g of hydroxybutyl acrylate (HBA) and 250 g of ethyl acetate (EAc) previously bubbled with nitrogen at a time when the conversion rate of methyl methacrylate is about 75% was added in the presence of nitrogen.
- 0.006 g of CuBr 2 , 0.012 g of TPMA, and 0.05 g of V-65 were added to the reaction flask, and a chain extension reaction was performed (polymerization of the second block).
- the block copolymer (A1) is prepared by exposing the reaction mixture to oxygen and terminating the reaction by diluting in a suitable solvent (in the process, V-65 has a half-life thereof). In consideration of the above, it was appropriately divided until the end of the reaction.
- MMA methyl methacrylate
- n-butyl acrylate 87.3 parts by weight of n-butyl acrylate and 2.7 parts by weight of 4-hydroxybutyl acrylate
- n-dodecyl mercaptan was added in an amount of 200 ppm as the molecular weight regulator, and then 120 parts by weight of ethyl acetate was added as a solvent.
- a crosslinking agent (Coronate L, manufactured by Japan NPU), 0.05 part by weight of an epoxy compound (T-746L, manufactured by Soken Company), and DBTDL (Dibutyltin) based on 100 parts by weight of the block copolymer (A1) prepared in Preparation Example 1.
- dilaurate 0.1 parts by weight and 0.2 parts by weight of the silane coupling agent having a ⁇ -cyanoacetyl group was mixed, and ethyl acetate was added as a solvent to adjust the coating solid content to about 25% by weight to prepare a coating solution (adhesive composition).
- the prepared coating solution was coated on a release treated surface of release PET (poly (ethylene terephthalate)) (MRF-38, manufactured by Mitsubishi) having a thickness of 38 ⁇ m, which was release-treated so that the thickness after drying was about 23 ⁇ m. And held for about 3 minutes.
- release PET poly (ethylene terephthalate)
- MRF-38 poly (ethylene terephthalate)
- TAC triacetyl cellulose
- PVA polyvinyl alcohol-based polarizing film
- the pressure-sensitive adhesive composition (coating liquid) and the pressure-sensitive adhesive polarizing plate were prepared in the same manner as in Example 1 except that the components and the ratios of the pressure-sensitive adhesive composition (coating liquid) were adjusted as shown in Table 4 below.
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Abstract
Description
구분 | 원료 | EBiB | EA | CuBr2 | TPMA | V-65 | |||
MMA | BMA | HPMA | |||||||
블록공중합체 | A1 | 14.2 | - | - | 0.1 | 6.2 | 0.002 | 0.005 | 0.017 |
A2 | 11.2 | 2.8 | - | 0.08 | 6.1 | 0.002 | 0.005 | 0.016 | |
A3 | 9.4 | 6.3 | - | 0.07 | 6.8 | 0.002 | 0.005 | 0.016 | |
B1 | 11.6 | 2.4 | 0.4 | 0.08 | 6.2 | 0.002 | 0.005 | 0.016 | |
B2 | 5.8 | - | - | 0.1 | 2.5 | 0.001 | 0.002 | 0.007 | |
함량 단위: g MMA: methyl methacrylate (단독 중합체 Tg: 약 110℃) BMA: butyl methacrylate(단독 중합체 Tg: 약 27℃) HPMA: 2-hydroxypropyl methacylate (단독 중합체 Tg: 약 26℃) EBiB: ethyl 2-bromoisobutyrate EA: Ethyl acetate TPMA: tris(2-pyridylmethyl)amine V-65: 2,2'-azobis(2,4-dimethyl valeronitrile) |
구분 | 원료 | EA | CuBr2 | TPMA | V-65 | ||
BA | HBA | ||||||
블록공중합체 | A1 | 115 | 0.8 | 250 | 0.006 | 0.01 | 0.05 |
A2 | 151 | 4.7 | 250 | 0.006 | 0.01 | 0.05 | |
A3 | 146 | 9.3 | 250 | 0.006 | 0.01 | 0.05 | |
B1 | 156 | - | 250 | 0.006 | 0.01 | 0.05 | |
B2 | 163 | 0.8 | 250 | 0.006 | 0.01 | 0.05 | |
함량 단위: g BA: butyl acrylate (단독 중합체 Tg: 약 -45℃) HBA: 4-hydroxybutyl acylate (단독 중합체 Tg: 약 -80℃) EA: Ethyl acetate TPMA: tris(2-pyridylmethyl)amine V-65: 2,2'-azobis(2,4-dimethyl valeronitrile) |
구분 | 블록 공중합체 | |||||
A1 | A2 | A3 | B1 | B2 | ||
제1블록 | MMA 비율 | 100 | 80 | 60 | 81 | 100 |
BMA 비율 | 0 | 20 | 40 | 16 | 0 | |
HPMA 비율 | 0 | 0 | 0 | 3 | 0 | |
Tg(℃) | 110 | 90 | 72 | 90 | 110 | |
Mn(×10000) | 1.9 | 2.3 | 2.9 | 2.3 | 0.8 | |
PDI | 1.27 | 1.34 | 1.38 | 1.36 | 1.18 | |
제2블록 | BA 비율 | 99.5 | 97.0 | 94.0 | 100.0 | 99.5 |
HBA 비율 | 0.5 | 3.0 | 6.0 | 0.0 | 0.5 | |
Tg(℃) | -47 | -46.2 | -47.5 | -45 | -47.0 | |
블록공중합체 | Mn(×10000) | 10.6 | 12.3 | 14.1 | 12.4 | 10.1 |
PDI | 1.7 | 1.8 | 2.1 | 1.8 | 1.6 | |
제1블록:제2블록(중량비) | 10.5:89.5 | 10.1:89.9 | 11.2:88.8 | 10.1:89.9 | 4.2:95.8 | |
단량체 비율 단위: 중량부 MMA: methyl methacrylate (단독 중합체 Tg: 약 110℃) BMA: butyl methacrylate(단독 중합체 Tg: 약 27℃) HPMA: 2-hydroxypropyl methacylate (단독 중합체 Tg: 약 26℃) BA: butyl acrylate (단독 중합체 Tg: 약 -45℃) HBA: 4-hydroxybutyl acylate (단독 중합체 Tg: 약 -80℃) Tg: 유리전이온도 Mn: 수평균분자량 PDI: 분자량 분포 |
구분 | 실시예 | 비교예 | ||||||||
1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 5 | ||
블록공중합체 | 종류 | A1 | A1 | A2 | A3 | A2 | A3 | B1 | B2 | C1 |
함량 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
가교제 함량 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.2 | 0.1 | 0.2 | |
에폭시 화합물 함량 | 0.05 | - | 0.2 | - | - | - | 0.5 | - | - | |
아지리딘 화합물 함량 | - | 0.05 | - | 2.0 | - | - | - | - | - | |
DBTDL 함량 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
SCA 함량 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | |
함량 단위: 중량부 가교제: Coronate L, 일본 NPU제) DBTDL: Dibutyltin dilaurate SCA: β-시아노아세틸기를 가지는 실란 커플링제 (M812, LG 화학제) 에폭시 화합물: T-746L, 소켄사(제) 아지리딘 화합물: XAMA7, 바이엘사(제) |
구분 | 실시예 | 비교예 | |||||||
1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 5 | |
코팅성 | A | A | A | A | A | A | B | A | A |
계면밀착력 | A | A | A | A | C | B | B | C | B |
휨 특성 | A | A | A | A | A | C | C | C | C |
Claims (20)
- 유리전이온도가 50℃ 이상인 제 1 블록 및 유리전이온도가 -10℃ 이하이고, 가교성 관능기를 포함하는 제 2 블록을 가지는 블록 공중합체; 및다관능성 에폭시 화합물과 아지리딘 화합물로 이루어진 군으로부터 선택된 1종 이상을 포함하는 점착제 조성물.
- 제 1 항에 있어서, 제 1 블록은 메타크릴산 에스테르 단량체로부터 유도된 중합 단위를 포함하는 점착제 조성물.
- 제 1 항에 있어서, 가교성 관능기는 제 1 블록에는 포함되어 있지 않고, 제 2 블록에만 포함되어 있는 점착제 조성물.
- 제 1 항에 있어서, 가교성 관능기가 히드록시기 또는 카복실기인 점착제 조성물.
- 제 1 항에 있어서, 제 2 블록은 알킬 (메타)아크릴레이트의 중합 단위 90 중량부 내지 99.9 중량부 및 가교성 관능기를 가지는 공중합성 단량체의 중합 단위 0.1 중량부 내지 10 중량부를 포함하는 점착제 조성물.
- 제 1 항에 있어서, 제 1 블록은 수평균분자량이 2,500 내지 100,000인 점착제 조성물.
- 제 1 항에 있어서, 제 1 블록은 분자량 분포가 1.0 내지 2.0인 점착제 조성물.
- 제 1 항에 있어서, 블록 공중합체는 수평균분자량이 10,000 내지 300,000인 점착제 조성물.
- 제 1 항에 있어서, 블록 공중합체는 분자량 분포가 1.0 내지 2.5인 점착제 조성물.
- 제 1 항에 있어서 블록 공중합체는 제 1 블록 1 중량부 내지 30 중량부 및 제 2 블록 70 중량부 내지 99 중량부를 포함하는 점착제 조성물.
- 제 1 항에 있어서, 블록 공중합체는, 제 1 블록 및 제 2 블록으로 되는 디블록 공중합체인 점착제 조성물.
- 제 1 항에 있어서, 다관능성 에폭시 화합물 및 아지리딘 화합물로 이루어진 군으로부터 선택된 1종 이상을 블록 공중합체 100 중량부 대비 0.001 중량부 내지 10 중량부로 포함하는 점착제 조성물.
- 제 1 항에 있어서, 다관능성 이소시아네이트 화합물을 추가로 포함하는 점착제 조성물.
- 광학 필름; 및 상기 광학 필름의 일면에 형성되고, 가교 구조가 구현된 제 1 항의 점착제 조성물을 포함하는 점착제층을 가지는 점착형 광학 부재.
- 제 14 항에 있어서, 광학 필름의 표면에는 카복실기가 존재하고, 점착제층이 상기 카복실기가 존재하는 표면에 부착되어 있는 점착형 광학 부재.
- 제 14 항에 있어서, 광학 필름과 점착제층의 사이에 코로나 처리층이 존재하고, 점착제층이 상기 코로나 처리층에 부착되어 있는 점착형 광학 부재.
- 편광자; 및 상기 편광자의 일면에 형성되고, 가교 구조가 구현된 제 1 항의 점착제 조성물을 포함하는 점착제층을 가지는 점착형 편광판.
- 제 17 항에 있어서, 편광자와 점착제층의 사이에는 표면에 카복실기가 존재하는 편광자 보호 필름이 존재하고, 점착제층은 상기 카복실기가 존재하는 보호 필름의 표면에 부착되어 있는 점착형 편광판.
- 제 17 항에 있어서, 편광자와 점착제층의 사이에는 표면에 코로나 처리층이 있는 편광자 보호 필름이 존재하고, 점착제층은 상기 코로나 처리층에 부착되어 있는 점착형 편광판.
- 제 14 항의 점착형 광학 부재 또는 제 17 항의 편광판을 포함하는 디스플레이 장치.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201480052707.5A CN105593328B (zh) | 2013-11-26 | 2014-11-26 | 压敏粘合剂组合物 |
US15/022,357 US10545367B2 (en) | 2013-11-26 | 2014-11-26 | Pressure sensitive adhesive composition |
EP14865741.4A EP3075810B1 (en) | 2013-11-26 | 2014-11-26 | Presssure sensitive adhesive composition |
JP2016524518A JP6253069B2 (ja) | 2013-11-26 | 2014-11-26 | 粘着剤組成物 |
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JP2018017967A (ja) * | 2016-07-29 | 2018-02-01 | 富士フイルム株式会社 | 偏光板保護フィルム、偏光板及び画像表示装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11116644A (ja) * | 1997-08-11 | 1999-04-27 | Nippon Shokubai Co Ltd | ブロックコポリマー及びその重合方法 |
JP2001131250A (ja) * | 1999-11-04 | 2001-05-15 | Sekisui Chem Co Ltd | アクリル系共重合体、アクリル系粘着剤組成物、アクリル系粘着テープもしくはシート及びアクリル系接着剤組成物 |
US7255920B2 (en) * | 2004-07-29 | 2007-08-14 | 3M Innovative Properties Company | (Meth)acrylate block copolymer pressure sensitive adhesives |
KR101023839B1 (ko) | 2008-07-24 | 2011-03-22 | 주식회사 엘지화학 | 점착제 조성물, 상기를 포함하는 편광판 및 액정표시장치 |
KR101171977B1 (ko) | 2008-06-05 | 2012-08-08 | 주식회사 엘지화학 | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 |
KR101171976B1 (ko) | 2007-12-29 | 2012-08-08 | 주식회사 엘지화학 | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 |
JP2013054516A (ja) * | 2011-09-02 | 2013-03-21 | Nitto Denko Corp | 粘着剤層付き透明導電性フィルム、その製造方法及びタッチパネル |
JP2013082772A (ja) * | 2011-10-06 | 2013-05-09 | Nitto Denko Corp | 光学用粘着剤、粘着剤層、光学フィルム、及び、画像表示装置 |
-
2014
- 2014-11-26 WO PCT/KR2014/011402 patent/WO2015080456A1/ko active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11116644A (ja) * | 1997-08-11 | 1999-04-27 | Nippon Shokubai Co Ltd | ブロックコポリマー及びその重合方法 |
JP2001131250A (ja) * | 1999-11-04 | 2001-05-15 | Sekisui Chem Co Ltd | アクリル系共重合体、アクリル系粘着剤組成物、アクリル系粘着テープもしくはシート及びアクリル系接着剤組成物 |
US7255920B2 (en) * | 2004-07-29 | 2007-08-14 | 3M Innovative Properties Company | (Meth)acrylate block copolymer pressure sensitive adhesives |
KR101171976B1 (ko) | 2007-12-29 | 2012-08-08 | 주식회사 엘지화학 | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 |
KR101171977B1 (ko) | 2008-06-05 | 2012-08-08 | 주식회사 엘지화학 | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 |
KR101023839B1 (ko) | 2008-07-24 | 2011-03-22 | 주식회사 엘지화학 | 점착제 조성물, 상기를 포함하는 편광판 및 액정표시장치 |
JP2013054516A (ja) * | 2011-09-02 | 2013-03-21 | Nitto Denko Corp | 粘着剤層付き透明導電性フィルム、その製造方法及びタッチパネル |
JP2013082772A (ja) * | 2011-10-06 | 2013-05-09 | Nitto Denko Corp | 光学用粘着剤、粘着剤層、光学フィルム、及び、画像表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3075810A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018017967A (ja) * | 2016-07-29 | 2018-02-01 | 富士フイルム株式会社 | 偏光板保護フィルム、偏光板及び画像表示装置 |
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