WO2009091162A2 - 아크릴계 점착제 조성물 - Google Patents
아크릴계 점착제 조성물 Download PDFInfo
- Publication number
- WO2009091162A2 WO2009091162A2 PCT/KR2009/000152 KR2009000152W WO2009091162A2 WO 2009091162 A2 WO2009091162 A2 WO 2009091162A2 KR 2009000152 W KR2009000152 W KR 2009000152W WO 2009091162 A2 WO2009091162 A2 WO 2009091162A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- meth
- acrylate
- group
- sensitive adhesive
- pressure
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
- C09J133/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
-
- 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]
-
- 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]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/031—Polarizer or dye
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/035—Ester polymer, e.g. polycarbonate, polyacrylate or polyester
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
- C09K2323/055—Epoxy
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
- C09K2323/057—Ester polymer, e.g. polycarbonate, polyacrylate or polyester
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
Definitions
- the present invention relates to an acrylic pressure-sensitive adhesive composition, and more particularly, a crosslinkable functional group-containing acrylic copolymer while specifying the content of the (meth) acrylic acid ester monomer and the aromatic group-containing monomer of the acrylic copolymer in a composition having almost no birefringence difference.
- (A) and the acrylic copolymer (B) which does not have a crosslinkable functional group are mix
- a liquid crystal cell and a polarizing plate including a liquid crystal are basically required, and an appropriate adhesive layer or adhesive layer for bonding them should be used.
- a retardation plate, a wide viewing angle compensation plate, or a brightness enhancement film may be additionally attached to the polarizing plate.
- the main structure for forming the liquid crystal display device includes a liquid crystal layer that is constantly arranged; A polarizing plate having a multi-layered structure integrated with an adhesive layer or an adhesive layer based on a liquid crystal cell composed of a transparent glass plate or a plastic plate-like material including a transparent electrode layer; Retardation plate; And further functional film layers and the like.
- the polarizing plate is a structure containing an iodine-based compound or a dichroic polarizing material arranged in a predetermined direction, in order to protect these polarizing devices by using a protective film such as a triacetyl cellulose (TAC) -based on both sides Will be configured.
- a protective film such as a triacetyl cellulose (TAC) -based on both sides Will be configured.
- the polarizing plate may additionally include a wide viewing angle compensation film such as a retardation film having a unidirectional molecular arrangement, a liquid crystal film, a brightness enhancement film, a reflective layer, or a flame retardant layer.
- Each of the films has different physical properties because they are made of materials having different molecular structures and compositions. In particular, under thermal or wet heat conditions, dimensional stability due to shrinkage or expansion of materials with unidirectional molecular arrangements is lacking.
- the strain stress due to shrinkage or expansion of the polarizing plate under high temperature and high temperature and high humidity conditions remains.
- the pressure-sensitive adhesive layer is also deformed, and the residual stress causes the polymer in the crosslinked structure to be oriented in a specific direction, thereby exhibiting birefringence.
- the general alkyl acrylic pressure sensitive adhesive exhibits negative birefringence, and light leakage occurs due to the birefringence difference.
- a material exhibiting positive birefringence under residual stress may be added to the final adhesive layer (blend) or copolymerized with an acrylic monomer having positive birefringence. Birefringence should be minimized.
- Korean Patent Laid-Open Publication No. 2003-0069461 discloses a technical idea of correcting the birefringence of a negative value represented by an acrylic pressure-sensitive adhesive layer under residual stress by incorporating a low molecular weight body having a positive birefringence under stress into a 0.01 to 40 parts by weight acrylic pressure-sensitive adhesive layer. It is. However, in such a case, the modulus of the adhesive decreases due to the use of the low molecular weight mixed in the pressure sensitive adhesive layer, which may cause problems such as cutting property when working the polarizing plate. There is a possibility of phase separation.
- the degree of birefringence can be adjusted under a given stress by copolymerizing an acrylic monomer (negative birefringence) having an alkyl group and an acrylic monomer having a side group having an aromatic group (positive birefringence).
- Japanese Laid-Open Patent Publication No. 2002-332468 discloses a method of improving the plasticizer resistance of an adhesive layer by introducing an acrylic monomer containing an aromatic group in a side chain.
- U.S. Pat.Nos. 663978, JP 2002-173656 and 2003-013029 disclose methods for adjusting the refractive index of an adhesive layer by introducing an acrylic monomer containing an aromatic group in a side chain.
- Japanese Laid-Open Patent Publication No. 2005-053976 discloses a method of introducing an acrylic monomer containing an aromatic group into a side chain to improve the adhesive performance even for a low polar film.
- the patent does not disclose the technical idea of improving the light leakage by introducing an acrylic monomer containing an aromatic group in the side chain to prepare an acrylic pressure-sensitive adhesive for polarizing plate, and to perform optical compensation to control the birefringence under the residual stress.
- Japanese Patent Application Laid-Open No. 60-207101 discloses the copolymer A by mixing an acrylic copolymer (A) containing a crosslinkable functional group, an acrylic copolymer (B) not containing a crosslinkable functional group and a multifunctional crosslinking agent of two or more functional groups.
- the invention which manufactures an adhesive in the area of 1 / 4-4 / 1 of the weight ratio of / B is disclosed.
- this patent shows the technical idea of excellent long-term storage properties of the polarizing plate produced by adding a corresponding amount of polyfunctional crosslinking agent to the amount of crosslinkable functional groups at the time of crosslinking so as not to leave free functional groups.
- the technical idea of the conditions on the molecular weight and the crosslinked structure thereof is not expressed, and in particular, the technical idea of the stress relaxation property of the pressure-sensitive adhesive is not described.
- TN Transmission Nematic
- STN Super Twisted Nematic
- liquid crystal display devices such as IPS (In-Plane Switching) or VA (Vertical Alignment), which are mainly used in large-sized TVs, attach the optical axes of the polarizing plates at 0 ° and 90 ° on both sides of the liquid crystal panel.
- Such liquid crystal display devices are known to be caused by not only light leakage due to stress concentration in heat or wet heat environment, but also light leakage due to bending of the liquid crystal panel.
- the warpage of the liquid crystal panel is caused by a difference in shrinkage of the polarizing plate depending on the position (especially in the direction of stretching axis) under heat or wet heat conditions.
- the TN or STN liquid crystal display device attaches the optical axes of the polarizing plate at 45 ° and 135 ° cross directions so that the stretching axis directions of the upper and lower polarizing plates are symmetrically or balanced, whereas the liquid crystal display device such as IPS or VA is a polarizing plate. Since the optical axes of and cross the 0 ° and 90 ° to attach, the direction of the stretching axis of the upper and lower polarizing plates are asymmetric. Therefore, in the liquid crystal display device such as IPS or VA, the warpage of the liquid crystal panel is generated in a direction in which the warpage is large because the warpage by the upper polarizer and the warpage by the lower polarizer are different. Due to the warpage of the liquid crystal panel, the liquid crystal panel is pressed by the top case used to fix the liquid crystal panel, which causes light leakage due to non-uniformity of the liquid crystal.
- the upper polarizing plate and the lower polarizing plate include respective adhesive layers, and the adhesive layer of the upper polarizing plate and the adhesive layer of the lower polarizing plate have different adhesive strengths according to the bending direction of the liquid crystal panel. It has been disclosed that the warpage phenomenon can be improved by providing a liquid crystal display device. However, this method is difficult to improve by adjusting the degree of warpage of the upper polarizing plate and the lower polarizing plate according to the environment (heat or wet heat conditions).
- Japanese Patent Application Laid-Open No. 2006-58718 is for polarizing plates having a storage modulus of 10 5 to 10 9 Pa at 0-50 ° C. after crosslinking and a glass transition temperature of -20 ° C. or higher in order to suppress light leakage in liquid crystal display devices such as IPS and MVA methods.
- the pressure-sensitive adhesive it was suggested that this can be achieved by making the elastic modulus and glass transition temperature of the pressure-sensitive adhesive higher than before.
- this does not mention the improvement of the warpage of the liquid crystal panel of the IPS and MVA methods, and it is difficult to improve the light leakage due to the warpage of the liquid crystal panel by the method proposed above.
- the light leakage due to the bending of the liquid crystal panel as well as the light leakage due to residual stress can be improved not only under heat or wet heat conditions, but also without substantially changing the main characteristics of the polarizing plate products such as durability that may occur during long-term use.
- Development of a new pressure-sensitive adhesive for polarizing plates and a polarizing plate applying the same is an urgent need.
- an object of the present invention is to adjust the birefringence of the acrylic pressure-sensitive adhesive for polarizing plate to improve the light leakage caused by the bending of the liquid crystal panel as well as the light leakage caused by the residual stress in the heat or wet heat conditions. It is providing an adhesive composition.
- Another object of the present invention is to provide a polarizing plate including a pressure-sensitive adhesive layer containing the pressure-sensitive adhesive composition having the above excellent physical properties.
- Still another object of the present invention is to provide a liquid crystal display device including the polarizing plate.
- a crosslinkable acrylic copolymer (A) and a noncrosslinkable acrylic copolymer (B) including a crosslinkable functional group-containing monomer include an acrylic copolymer mixed at a mixing ratio of 1: 9 to 5: 5,
- the copolymers (A) and (B) each comprise 75 to 97 parts by weight of a (meth) acrylic acid ester monomer; And 3 to 25 parts by weight of an aromatic group-containing monomer.
- the invention also polarizing film; And a pressure-sensitive adhesive layer formed on one or both surfaces of the film and containing the pressure-sensitive adhesive composition according to the present invention.
- the present invention also provides a liquid crystal cell; And a liquid crystal panel comprising the polarizing plates bonded to one or both surfaces of the liquid crystal cell.
- the crosslinked polymer of the acrylic copolymer forms a dense crosslinked structure, and the non-crosslinked polymers are connected to each other in the crosslinked structure to satisfy durability and fluidity, so that there is no birefringence difference due to residual stress. Under the moist heat conditions, not only the light leakage due to the residual stress but also the light leakage due to the bending of the liquid crystal panel may be improved.
- the present inventors add a plasticizer or a low molecular weight to the high molecular weight copolymer, or control the crosslinking structure to impart a stress relaxation function of the pressure-sensitive adhesive, but the birefringence difference occurs due to residual stress.
- the content of the (meth) acrylic acid ester monomer and the aromatic group-containing monomer constituting the acrylic copolymer is specified in a composition having almost no birefringence difference, and the crosslinkable functional group-containing high molecular weight air
- the mixing ratio of the copolymer (A) and the high molecular weight copolymer (B) having no crosslinkable functional group is 1: 9 to 5: 5 to confirm that the light leakage phenomenon due to warpage can be reduced while having excellent durability.
- the invention has been completed.
- Crosslinkable acrylic copolymer (A) containing a crosslinkable functional group containing monomer; And an acrylic copolymer in which the non-crosslinkable acrylic copolymer (B) is mixed at a mixing ratio of 1: 9 to 5: 5,
- the copolymers (A) and (B) each comprise 75 to 97 parts by weight of a (meth) acrylic acid ester monomer; And 3 to 25 parts by weight of an aromatic group-containing monomer.
- the copolymers (A) and (B), which are high molecular weights each contain 75 to 97 parts by weight of an alkyl (meth) acrylic acid ester monomer and an acrylic group copolymerizable with an aromatic group. When it contains 3 to 25 parts by weight there is little difference in birefringence according to the residual stress.
- the mixing ratio of the high molecular weight acrylic copolymer (A) having a crosslinkable functional group and the high molecular weight acrylic copolymer (B) having no crosslinkable functional group while satisfying the above composition is 1: 9 to 5: 5. It also has excellent durability and can reduce light leakage caused by bending. Even if the crosslinking polymer has a low crosslinking density, the crosslinkable polymer forms a relatively dense crosslinked structure even if the crosslinking density is low. This is because they are connected to each other to satisfy characteristics such as durability and fluidity at the same time.
- each component is specified by the following.
- the acrylic copolymer is not particularly limited as long as it is commonly used as an adhesive in the art,
- the mixing ratio of the crosslinkable acrylic copolymer (A) and the noncrosslinkable acrylic copolymer (B) containing the crosslinkable functional group-containing monomer is 1: 9 to 5: 5,
- the acrylic copolymer (A) and (B) are each 75 to 97 parts by weight of (meth) acrylic acid ester monomer; And 3 to 25 parts by weight of an aromatic group-containing monomer.
- Each of the acrylic copolymers (A) and (B) may use an alkyl ester having 1 to 12 carbon atoms of acrylic acid (or methacrylic acid) as the (meth) acrylic acid ester monomer.
- an alkyl ester having 2 to 8 carbon atoms of acrylic acid (or methacrylic acid) to maintain cohesive force at high temperatures. desirable.
- the (meth) acrylic acid ester monomer which has the said C1-C12 alkyl group is contained by 75-97 weight part with respect to 100 weight part of acrylic copolymers (A) or (B). If the content of the (meth) acrylic acid ester monomer is less than 75 parts by weight, there is a problem that the initial adhesive strength is lowered, and if it exceeds 97 parts by weight, there is a problem that durability may occur due to the decrease in cohesion.
- each of the acrylic copolymers (A) and (B) is an aromatic group-containing monomer represented by the following general formula (1) showing a birefringence of a positive value under stress in order to correct the birefringence of a negative value under the residual stress of the acrylic copolymer It is preferable to include.
- the aromatic group-containing monomer is a pressure-sensitive adhesive composition, characterized in that the compound of Formula 1:
- R 1 represents hydrogen or a methyl group
- R 2 represents an alkylene group having 1 to 12 carbon atoms
- n an integer of 0 to 3
- X represents a single bond, oxygen, sulfur or an alkylene group having 1 to 4 carbon atoms
- Ar represents an aromatic group unsubstituted or substituted with halogen or alkyl having 1 to 12 carbon atoms.
- the aromatic group-containing monomer may be phenoxy ethyl (meth) acrylate, benzyl (meth) acrylate, 2-phenylthio-1-ethyl acrylate, 8- (2-naphthyloxy) -1-octyl acrylate, 2 -(1-naphthyloxy) -1-ethyl acrylate or the like can be used alone or in combination of two or more thereof, more preferably benzyl acrylate or phenoxy ethyl acrylate.
- the content of the aromatic group-containing monomer is preferably 3 to 25 parts by weight based on 100 parts by weight of the acrylic copolymer (A) or (B). If the content of the aromatic group-containing monomer is less than 3 parts by weight, the final pressure-sensitive adhesive exhibits a negative birefringence under the residual stress, and the optical light leakage improvement effect is insignificant. If the content exceeds 25 parts by weight, the positive birefringence becomes large under the residual stress. The effect is insignificant, and the adhesion properties deteriorate, and the durability is weak.
- the acrylic copolymer (A) includes a crosslinkable functional group-containing monomer, wherein the crosslinkable functional group-containing monomer reacts with the multifunctional crosslinking agent to prevent cohesion of the adhesive under high temperature or high humidity conditions, so that cohesion by chemical bonding or It acts to give adhesive strength.
- the crosslinkable functional group-containing monomer is preferably a hydroxy group-containing monomer, a carboxyl group-containing monomer, or an anhydride thereof.
- the crosslinkable functional group-containing monomer is 2-hydroxyethyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 2-hydroxyethylene glycol (meth) acryl Latex, 3-hydroxypropylene glycol (meth) acrylate, acrylic acid, methacrylic acid, acrylic acid duplex, itaconic acid, maleic acid or maleic anhydride, and the like.
- the crosslinkable functional group-containing monomer is preferably included in an amount of 0.1 to 10 parts by weight with respect to 100 parts by weight of the acrylic copolymer (A), when the content is less than 0.1 parts by weight, cohesive failure is likely to occur under high temperature or high humidity conditions, and adhesive strength. There is a problem in that the improvement effect is lowered, and when it exceeds 10 parts by weight, compatibility is reduced, causing surface migration to occur severely, flow characteristics are reduced, and stress relaxation is lowered due to an increase in cohesive force.
- the acrylic copolymer (A) or (B) is a functional having a high glass transition temperature as an optional component in order to control the glass transition temperature of the pressure-sensitive adhesive during manufacturing or to impart other functionality. It is preferable to further include a monomer.
- the functional monomer is a monomer having a common copolymerizable vinyl group, preferably a compound represented by the following formula (2).
- R 3 represents hydrogen or alkyl
- R 4 is cyano; Phenyl unsubstituted or substituted with alkyl; Acetyloxy; Or COR 5 , wherein R 5 represents amino or glycidyloxy unsubstituted or substituted with alkyl or alkoxy having 1 to 4 carbon atoms.
- the functional monomer may be used alone or in combination of two or more of acrylonitrile, (meth) acrylamide, N-methyl (meth) acrylamide, styrene, methyl styrene, glycidyl (meth) acrylate or vinyl acetate. have.
- the functional monomer contained in the acrylic copolymer (A) or (B) When the amount of the functional monomer contained in the acrylic copolymer (A) or (B) is too large, the flexibility of the pressure-sensitive adhesive composition may be lowered and the peeling force may be lowered, so the functional monomer may be an acrylic copolymer (A) or It is preferable to be contained in 20 weight part or less with respect to 100 weight part of all the monomer components contained in (B).
- the acrylic copolymers (A) and (B) may be prepared by conventional methods such as solution polymerization, photopolymerization, bulk polymerization, suspension polymerization, or emulsion polymerization, respectively.
- solution polymerization method it is preferable to prepare by solution polymerization method.
- the polymerization temperature is 50 ⁇ 140 °C, it is good to mix the initiator in a state in which monomers are uniformly mixed.
- Such a polymerization initiator is preferably used alone or in combination with an azo polymerization initiator such as azobisisobutyronitrile and azobiscyclohexanecarbonitrile and peroxides such as benzoyl peroxide and acetyl peroxide.
- an azo polymerization initiator such as azobisisobutyronitrile and azobiscyclohexanecarbonitrile
- peroxides such as benzoyl peroxide and acetyl peroxide.
- a chain transfer agent such as mercaptans such as lauryl mercaptan, n-dodecyl mercaptan, n-octyl mercaptan and alpha methyl styrene dimer may be used simultaneously with the polymerization initiator.
- the weight average molecular weights of the acrylic copolymers (A) and (B) of this invention are 1 million or more, respectively, More preferably, it is 1 million-2 million. If the weight average molecular weight is less than 1 million, there is a problem in the durability reliability due to bubbles or peeling under high temperature and high humidity conditions due to the lack of cohesive force, it is difficult to relieve stress concentration when exceeding 2 million.
- the mixing ratio of the acrylic copolymers (A) and (B) is preferably 1: 9 to 5: 5, which improves light leakage due to warpage, and at the same time, is excellent in durability and cutability. Do. If the non-crosslinkable polymer is more than the crosslinkable polymer, even if the crosslinking density is low, the crosslinkable polymer forms a relatively dense crosslinked structure. Because it satisfies. When the mixing ratio of the copolymers (A) and (B) is less than 1: 9, that is, when the content of the copolymer (A), which is a crosslinkable polymer, is small, the cohesive force decreases and the durability and breakability are weak.
- the adhesive composition of this invention which consists of such a component as mentioned above can use a polyfunctional crosslinking agent further as needed.
- the multifunctional crosslinking agent reacts with the functional group of the acrylic copolymer to increase the cohesive force of the adhesive.
- the polyfunctional crosslinking agent may be used singly or in combination of isocyanate compound, epoxy compound, aziridine compound or metal chelate compound.
- the isocyanate compound is toluene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isoform diisocyanate, tetramethyl xylene diisocyanate, naphthalene diisocyanate, triphenylmethane triisocyanate, methylene bis ( Reaction products with polyols, such as 4-phenylmethane) triisocyanate or these trimethylol propane, etc. can be used.
- the epoxy compound is ethylene glycol diglycidyl ether, triglycidyl ether, trimethylol propane triglycidyl ether, N, N, N ', N'- tetraglycidyl ethylenediamine, or glycerin diglycidyl ether Etc. can be used.
- the aziridine-based compound is N, N'-toluene-2,4-bis (1-aziridinecarboxide), N, N'-diphenylmethane-4,4'-bis (1-aziridinecarboxide) ), Triethylene melamine, or tri-1-aziridinylphosphine oxide.
- the metal chelate compound may be a compound in which a polyvalent metal such as aluminum, iron, zinc, tin, titanium, antimony, magnesium, or vanadium is coordinated with acetylacetone or ethyl acetoacetate.
- the functional group crosslinking reaction of the multifunctional crosslinking agent should hardly occur in the compounding process for forming the adhesive layer.
- a cross-linked structure is formed to obtain an elastic adhesive layer having a strong cohesive force. Due to the strong cohesive force of the pressure-sensitive adhesive, adhesive properties such as durability and cutting property of the pressure-sensitive adhesive product can be improved.
- the multifunctional crosslinking agent is preferably included in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the acrylic copolymer, and when the content is within the above range, the cohesive strength of the pressure sensitive adhesive is excellent, and problems in adhesive durability such as bubbles or peeling are generated. It does not occur, there is no lifting and the like has the effect of excellent durability reliability.
- the pressure-sensitive adhesive composition of the present invention comprising the above components may further use a silane coupling agent or a pressure-sensitive adhesive resin as necessary.
- the silane coupling agent serves to improve the heat resistance and moisture resistance by improving the adhesion stability when the acrylic pressure-sensitive adhesive is bonded to the glass plate.
- the silane coupling agent serves to help improve adhesion reliability when left for a long time under high temperature and high humidity.
- the silane coupling agent is ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, vinyl Trimethoxysilane, vinyltriethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ -methacryloxypropyltriethoxysilane, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane , 3-isocyanatepropyltriethoxysilane, or ⁇ -acetoacetatepropyltrimethoxysilane, etc. may be used alone or in combination of two or more thereof.
- the silane coupling agent is preferably included in an amount of 0.005 to 5 parts by weight with respect to 100 parts by weight of the acrylic copolymer, and when the content is within the above range, it is more preferable in improving adhesion stability and adhesion reliability under high temperature and high humidity.
- the pressure-sensitive adhesive resin serves to adjust the adhesive performance of the acrylic pressure-sensitive adhesive.
- the tackifying resins include (hydrogenated) hydrocarbon resins, (hydrogenated) rosin resins, (hydrogenated) rosin ester resins, (hydrogenated) terpene resins, (hydrogenated) terpene phenol resins, polymerized rosin resins, or polymerized rosin ester resins, and the like. It can be used individually or in mixture of 2 or more types.
- the pressure-sensitive adhesive resin is preferably contained in 1 to 100 parts by weight with respect to 100 parts by weight of the acrylic copolymer, when the content is in the above range is better in improving the compatibility and cohesion of the pressure-sensitive adhesive.
- acrylic pressure-sensitive adhesive composition of the present invention may further use additives such as acrylic low molecular weight, epoxy resin, curing agent, UV stabilizer, antioxidant, colorant, reinforcing agent, filler, antifoaming agent, surfactant, or plasticizer.
- additives such as acrylic low molecular weight, epoxy resin, curing agent, UV stabilizer, antioxidant, colorant, reinforcing agent, filler, antifoaming agent, surfactant, or plasticizer.
- the acrylic pressure-sensitive adhesive composition of the present invention composed of the above components can be prepared according to a conventional method, and of course, can be produced by methods such as thermosetting or photocuring.
- the invention also polarizing film
- a polarizing plate comprising an adhesive layer containing the pressure-sensitive adhesive composition according to the present invention.
- the polarizing film constituting the polarizing plate is not particularly limited.
- the polarizing film may be a film made by containing a polarizing component such as iodine or dichroic dye in a polyvinyl alcohol-based resin and stretching the film.
- the thickness of these polarizing films is also not particularly limited, and may form a conventional thickness.
- the polyvinyl alcohol-based resin may be polyvinyl alcohol, polyvinyl formal, polyvinyl acetal and ethylene, or saponified vinyl acetate copolymer.
- a cellulose film such as triacetal cellulose; Polyester film such as polycarbonate film or polyethylene terephthalate; Polyether sulfone-based film; Polyethylene, polypropylene, polyolefin-based films having a cyclo or norbornene structure; Or a multilayer film etc. which laminated
- stacked protective films such as a polyolefin type film like ethylene propylene copolymer, can be formed.
- the thickness of these protective films is also not particularly limited, and may form a conventional thickness.
- the method of forming the adhesive layer on the polarizing film as described above is not particularly limited, and for example, a method of applying and drying the pressure-sensitive adhesive using a bar coater or the like directly on the surface of the polarizing film, or applying the pressure-sensitive adhesive to the surface of the peelable substrate After drying, a method of transferring and aging the adhesive layer formed on the surface of the peelable substrate to the polarizing film may be applied.
- the polarizing plate of the present invention as described above may be laminated with one or more functional layers that provide additional functions such as a protective layer, a reflective layer, an antiglare layer, a retardation plate, a wide viewing angle compensation film, or a brightness enhancement film, the present invention
- the adhesive layer according to the above may be formed on the functional layer.
- the present invention also provides a liquid crystal cell; And a liquid crystal panel including the polarizing plate of the present invention bonded to one or both surfaces of the liquid crystal cell.
- the polarizing plate to which the adhesive of this invention was applied is applicable to all the normal liquid crystal display devices,
- the kind of the liquid crystal panel is not specifically limited.
- the liquid crystal display device may include a liquid crystal panel obtained by bonding the pressure sensitive adhesive polarizer to one side or both sides of the liquid crystal cell.
- the pressure-sensitive adhesive composition of the present invention is excellent in durability and cutting properties that may occur under high temperature and high humidity conditions, and may have an effect of improving light leakage due to warpage of the liquid crystal panel.
- n-butyl acrylate BA
- MA methyl acrylate
- PhEA phenoxy ethyl acrylate
- a monomer mixture consisting of 10.5 parts by weight and 2.0 parts by weight of hydroxyethyl methacrylate (2-HEMA) was added, followed by 100 parts by weight of ethyl acetate (EAc) as a solvent. After purging nitrogen gas for 1 hour to remove oxygen, it was maintained at 62 °C.
- AIBN azobisisobutyronitrile
- the acrylic copolymer A-1 was manufactured in the same manner as in the preparation of the acrylic copolymer A-1, except that the components and composition ratios of Table 1 were used. At this time, the unit of Table 1 is a weight part.
- the pressure-sensitive adhesive layer prepared above was adhesively processed on the polarizing plate.
- the obtained polarizing plate was cut
- the result of having performed the following evaluation about the polarizing plate to which the said adhesive was applied is shown in Table 2.
- the pressure-sensitive adhesive coated polarizing plate (90 mm ⁇ 170 mm) prepared in Example 1 was attached to a glass substrate (110 mm ⁇ 190 mm ⁇ 0.7 mm) in a state where the optical absorption axis was crossed on both sides. At this time, the applied pressure was about 5kg / cm2 to clean room work so as not to generate bubbles or foreign matter.
- the specimens were left for 1000 hours at 60 ° C. and 90% relative humidity to observe the heat and moisture resistance. The heat resistance was observed for 1000 hours at the temperature of 80 °C after the occurrence of bubbles or peeling. Immediately after evaluating the state of the specimen was performed at room temperature for 24 hours.
- the evaluation criteria for reliability are as follows.
- Example 2 Except for using the adhesive layer shown in Table 2 it was carried out in the same manner as in Example 1. In addition, using the manufactured polarizing plate, the durability of the pressure-sensitive adhesive and the light leakage due to the stress and the light leakage due to the warp were measured, and the results are shown in Table 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Polarising Elements (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
Claims (20)
- 가교성 관능기 함유 단량체를 포함하는 가교성 아크릴계 공중합체(A); 및 비가교성 아크릴계 공중합체(B)가 1:9 내지 5:5의 혼합비율로 혼합된 아크릴계 공중합체를 포함하되,상기 공중합체 (A) 및 (B)는 각각 (메타)아크릴산 에스테르계 단량체 75 내지 97 중량부; 및 방향족기 함유 단량체 3 내지 25 중량부를 포함하는 점착제 조성물.
- 제1항에 있어서,아크릴계 공중합체(A) 및 (B)는 각각 중량 평균분자량이 100만 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,(메타)아크릴산 에스테르계 단량체가 메틸(메타)아크릴레이트, 에틸(메타)아크릴레이트, n-프로필 (메타)아크릴레이트, 이소프로필 (메타)아크릴레이트, t-부틸(메타)아크릴레이트, n-부틸(메타)아크릴레이트, sec-부틸(메타)아크릴레이트, 펜틸(메타)아크릴레이트, 2-에틸헥실(메타)아크릴레이트, n-옥틸(메타)아크릴레이트, 이소옥틸(메타)아크릴레이트, 이소노닐(메타)아크릴레이트 및 라우릴(메타)아크릴레이트로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제4항에 있어서,방향족기 함유 단량체가 페녹시 에틸 (메타)아크릴레이트, 벤질 (메타)아크릴레이트, 2-페닐티오-1-에틸 아크릴레이트, 8-(2-나프틸옥시)-1-옥틸 아크릴레이트 및 2-(1-나프틸옥시)-1-에틸 아크릴레이트로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,가교성 관능기 함유 단량체가 히드록시기 함유 단량체, 카르복실기 함유 단량체 및 그의 무수물로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,가교성 관능기 함유 단량체가 2-하이드록시에틸 (메타)아크릴레이트, 3-하이드록시프로필 (메타)아크릴레이트, 4-하이드록시부틸 (메타)아크릴레이트, 2-하이드록시에틸렌글리콜 (메타)아크릴레이트, 3-하이드록시프로필렌글리콜 (메타)아크릴레이트, 아크릴산, 메타크릴산, 아크릴산 이중체, 이타콘산, 말레인산 및 말레인산 무수물로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,가교성 관능기 함유 단량체가 아크릴계 공중합체(A) 100 중량부에 대하여 0.1 내지 10 중량부로 포함되는 것을 특징으로 하는 점착제 조성물.
- 제9항에 있어서,기능성 단량체가 아크릴로니트릴, (메타)아크릴아미드, N-메틸아크릴아미드, 스티렌, 메틸 스티렌, 글리시딜 (메타)아크릴레이트 및 비닐 아세테이트로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,아크릴계 공중합체 100 중량부에 대하여 0.01 내지 10 중량부의 다관능성 가교제를 추가로 포함하는 것을 특징으로 하는 점착제 조성물.
- 제11항에 있어서,다관능성 가교제가 이소시아네이트계 화합물, 에폭시계 화합물, 아지리딘계 화합물 및 금속 킬레이트계 화합물로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,아크릴계 공중합체 100 중량부에 대하여 0.005 내지 5 중량부의 실란 커플링제를 추가로 포함하는 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,아크릴계 공중합체 100 중량부에 대하여 1 내지 100 중량부의 점착성부여수지를 추가로 포함하는 점착제 조성물.
- 제14항에 있어서,점착성부여수지가 (수첨) 히드로카본계 수지, (수첨) 로진 수지, (수첨) 로진 에스테르 수지, (수첨) 테르펜 수지, (수첨) 테르펜 페놀 수지, 중합 로진 수지 및 중합 로진 에스테르 수지로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 점착제 조성물.
- 제1항에 있어서,아크릴계 저분자량체, 에폭시 수지, 경화제, 자외선안정제, 산화방지제, 조색제, 보강제, 충진제, 소포제, 계면 활성제 및 가소제로 이루어진 군으로부터 선택된 하나 이상을 추가로 포함하는 점착제 조성물.
- 편광필름; 및상기 필름의 일면 또는 양면에 형성되고, 제1항 내지 제16항 중 어느 한 항에 따른 점착제 조성물을 함유하는 점착층을 포함하는 편광판.
- 제17항에 있어서,편광 필름의 양면에 형성되는 보호 필름을 추가로 포함하되,상기 보호필름이 셀룰로오스계 필름, 폴리에스테르계 필름, 폴리에테르설폰계 필름 및 폴리올레핀계 필름으로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 편광판.
- 제17항에 있어서,보호층, 반사층, 방현층, 위상차판, 광시야각 보상필름 및 휘도 향상 필름으로 이루어지는 군으로부터 선택된 하나 이상의 기능성층을 추가로 포함하는 편광판.
- 액정 셀; 및 상기 액정 셀의 일면 또는 양면에 접합된 제17항의 편광판을 포함하는 액정패널을 포함하는 액정표시장치.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09702625A EP2233546B1 (en) | 2008-01-14 | 2009-01-12 | Acrylic adhesive composition |
US12/812,736 US9482896B2 (en) | 2008-01-14 | 2009-01-12 | Acrylic adhesive composition |
CN200980102145XA CN101910347B (zh) | 2008-01-14 | 2009-01-12 | 丙烯酸粘合剂组合物 |
AT09702625T ATE546504T1 (de) | 2008-01-14 | 2009-01-12 | Acrylhaftzusammensetzung |
JP2010542177A JP5421288B2 (ja) | 2008-01-14 | 2009-01-12 | アクリル系粘着剤組成物 |
US14/074,274 US9798185B2 (en) | 2008-01-14 | 2013-11-07 | Acrylic adhesive composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2008-0004044 | 2008-01-14 | ||
KR1020080004044A KR101019064B1 (ko) | 2008-01-14 | 2008-01-14 | 아크릴계 점착제 조성물 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/812,736 A-371-Of-International US9482896B2 (en) | 2008-01-14 | 2009-01-12 | Acrylic adhesive composition |
US14/074,274 Continuation US9798185B2 (en) | 2008-01-14 | 2013-11-07 | Acrylic adhesive composition |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009091162A2 true WO2009091162A2 (ko) | 2009-07-23 |
WO2009091162A3 WO2009091162A3 (ko) | 2009-11-05 |
Family
ID=40885782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2009/000152 WO2009091162A2 (ko) | 2008-01-14 | 2009-01-12 | 아크릴계 점착제 조성물 |
Country Status (8)
Country | Link |
---|---|
US (2) | US9482896B2 (ko) |
EP (1) | EP2233546B1 (ko) |
JP (1) | JP5421288B2 (ko) |
KR (1) | KR101019064B1 (ko) |
CN (1) | CN101910347B (ko) |
AT (1) | ATE546504T1 (ko) |
TW (1) | TWI393757B (ko) |
WO (1) | WO2009091162A2 (ko) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011105918A (ja) * | 2009-11-20 | 2011-06-02 | Nitto Denko Corp | 光学フィルム用粘着剤組成物、光学フィルム用粘着剤層、粘着型光学フィルムおよび画像表示装置 |
EP2330170A1 (en) * | 2008-09-01 | 2011-06-08 | Nippon Carbide Industries Co., Inc. | Pressure-sensitive adhesive composition, pressure-sensitive adhesive and optical film |
JP2011122104A (ja) * | 2009-12-11 | 2011-06-23 | Saiden Chemical Industry Co Ltd | 偏光板用粘着剤組成物 |
JP2011132504A (ja) * | 2009-11-27 | 2011-07-07 | Nippon Synthetic Chem Ind Co Ltd:The | 粘着剤、光学部材用粘着剤、粘着剤層付き光学部材、画像表示装置、及び粘着剤組成物 |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101019064B1 (ko) * | 2008-01-14 | 2011-03-07 | 주식회사 엘지화학 | 아크릴계 점착제 조성물 |
DE102008023758A1 (de) | 2008-05-09 | 2009-11-12 | Tesa Se | Haftklebebänder zur Verklebung von Druckplatten |
WO2011065779A2 (ko) * | 2009-11-27 | 2011-06-03 | (주)Lg화학 | 점착제 조성물 |
JP5639448B2 (ja) * | 2010-11-12 | 2014-12-10 | リンテック株式会社 | アクリル系粘着剤組成物、アクリル系粘着剤及び粘着剤層付き光学部材 |
JP5595321B2 (ja) * | 2011-03-31 | 2014-09-24 | リンテック株式会社 | 粘着性組成物、粘着剤および粘着シート |
JP6001331B2 (ja) * | 2012-05-28 | 2016-10-05 | ヘンケルジャパン株式会社 | 積層シート用接着剤 |
JP6001332B2 (ja) * | 2012-05-30 | 2016-10-05 | ヘンケルジャパン株式会社 | 積層シート用接着剤 |
CN104334671A (zh) * | 2012-05-31 | 2015-02-04 | Lg化学株式会社 | 压敏粘合剂组合物 |
CN102848768A (zh) * | 2012-09-13 | 2013-01-02 | 惠州艺都影像科技有限公司 | Pp合成纸表面处理剂 |
EP2904060B1 (en) * | 2012-09-27 | 2017-02-15 | Avery Dennison Corporation | Vibration damping adhesives |
JP6026260B2 (ja) * | 2012-12-17 | 2016-11-16 | 藤森工業株式会社 | 粘着剤層、及び粘着フィルム |
JP6347945B2 (ja) * | 2012-12-27 | 2018-06-27 | 日本合成化学工業株式会社 | 耐熱粘着フィルム用アクリル系樹脂の製造方法 |
JP5788102B2 (ja) * | 2013-03-06 | 2015-09-30 | 古河電気工業株式会社 | 非架橋性粘着組成物および粘着シート |
JP6194190B2 (ja) * | 2013-05-16 | 2017-09-06 | ヘンケルジャパン株式会社 | 太陽電池保護シート用接着剤 |
KR101938897B1 (ko) * | 2013-06-05 | 2019-01-15 | 동우 화인켐 주식회사 | 아크릴계 공중합체, 이를 함유한 점착제 조성물 및 편광판 |
KR101991971B1 (ko) * | 2013-07-22 | 2019-06-21 | 동우 화인켐 주식회사 | 아크릴계 필름용 점착제 조성물 및 이를 함유한 편광판 |
KR20150017858A (ko) * | 2013-08-08 | 2015-02-23 | 동우 화인켐 주식회사 | 점착제 조성물 및 이를 이용한 복합 편광판 |
KR101622005B1 (ko) | 2013-08-22 | 2016-05-17 | 제일모직주식회사 | 편광판용 점착 필름, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 |
EP3075810B1 (en) | 2013-11-26 | 2019-01-02 | LG Chem, Ltd. | Presssure sensitive adhesive composition |
JP6209077B2 (ja) * | 2013-12-19 | 2017-10-04 | 日本カーバイド工業株式会社 | 粘着剤組成物、粘着剤付偏光板、及び表示装置 |
JP6209076B2 (ja) * | 2013-12-19 | 2017-10-04 | 日本カーバイド工業株式会社 | 粘着剤組成物、粘着剤付偏光板、及び表示装置 |
KR102301157B1 (ko) * | 2014-07-18 | 2021-09-10 | 미쯔비시 케미컬 주식회사 | 점착제 조성물, 및 이를 사용하여 이루어진 점착제 및 편광판용 점착제 |
WO2016014225A1 (en) * | 2014-07-25 | 2016-01-28 | 3M Innovative Properties Company | Optically clear pressure sensitive adhesive article |
KR101854493B1 (ko) * | 2014-08-29 | 2018-05-04 | 삼성에스디아이 주식회사 | 점착필름, 및 이를 이용한 디스플레이 부재 |
CN106715623B (zh) * | 2014-09-30 | 2020-01-21 | 株式会社Lg化学 | 偏光板和包括其的显示装置 |
CN105542670B (zh) * | 2014-10-24 | 2019-07-16 | 三星Sdi株式会社 | 用于偏光板的粘着膜、包含粘着膜的偏光板以及包含偏光板的光学显示器 |
KR101780547B1 (ko) * | 2015-07-31 | 2017-09-22 | 삼성에스디아이 주식회사 | 편광판용 점착 필름, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 |
JP6320358B2 (ja) * | 2015-09-29 | 2018-05-09 | 日東電工株式会社 | タッチセンシング機能付液晶パネルおよび液晶表示装置 |
FR3043407B1 (fr) | 2015-11-10 | 2017-11-24 | Saint Gobain Performance Plastics France | Procede de collage |
CN105950078B (zh) * | 2016-05-11 | 2017-11-28 | 南京京锦元科技实业有限公司 | 一种聚丙烯酸酯粉末粘结剂 |
KR102069314B1 (ko) | 2016-10-05 | 2020-01-22 | 주식회사 엘지화학 | 반도체 접착용 수지 조성물, 반도체용 접착 필름 및 다이싱 다이본딩 필름 |
KR102084112B1 (ko) | 2016-12-13 | 2020-03-03 | 삼성에스디아이 주식회사 | 편광판용 접착제 조성물, 편광판 및 광학표시장치 |
JP6941960B2 (ja) * | 2017-04-04 | 2021-09-29 | デンカ株式会社 | 粘着テープ及び電子部品の製造方法 |
KR102159496B1 (ko) * | 2017-09-15 | 2020-09-24 | 주식회사 엘지화학 | 점착제 조성물, 편광판, 및 광학부재 |
KR102144950B1 (ko) | 2017-09-29 | 2020-08-14 | 주식회사 엘지화학 | 점착 조성물 및 점착 필름 |
CN111417694B (zh) * | 2017-11-28 | 2022-07-15 | 杉金光电(苏州)有限公司 | 光学层合体 |
DE102017221702A1 (de) * | 2017-12-01 | 2019-06-06 | Tesa Se | Chemikalienbeständiges Polyacrylat und darauf basierende Haftklebmasse |
FR3092583B1 (fr) | 2019-02-13 | 2021-09-03 | Saint Gobain Performance Plastics France | Assemblage de joint autoadhésif et procédé de fabrication d’un tel assemblage |
WO2021045391A1 (ko) * | 2019-09-03 | 2021-03-11 | 주식회사 엘지화학 | 아크릴계 에멀젼 점착제 조성물 |
KR102418592B1 (ko) | 2019-09-03 | 2022-07-07 | 주식회사 엘지화학 | 아크릴계 에멀젼 점착제 조성물 |
DE102020205048A1 (de) | 2020-04-21 | 2021-10-21 | Tesa Se | Polyacrylat und darauf basierende Haftklebmasse |
CN112852309A (zh) * | 2021-02-24 | 2021-05-28 | 东莞市博翔电子材料有限公司 | 一种用于动力电池铝塑膜的胶粘剂及其加工工艺 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61207101A (ja) | 1985-03-08 | 1986-09-13 | Mitsubishi Electric Corp | 電気車用制動制御装置 |
JP2002173656A (ja) | 2000-12-04 | 2002-06-21 | Nitto Denko Corp | 感圧性接着剤組成物、感圧性接着シート及び光学フィルム |
JP2002332468A (ja) | 2001-04-25 | 2002-11-22 | Three M Innovative Properties Co | 耐可塑剤性粘着剤組成物及び粘着剤物品 |
JP2003013029A (ja) | 2001-07-02 | 2003-01-15 | Nitto Denko Corp | 粘着剤、粘着部材及び表示装置 |
KR20030069461A (ko) | 2002-02-20 | 2003-08-27 | 주식회사 엘지화학 | 아크릴계 점착제 조성물 |
JP2005053976A (ja) | 2003-08-06 | 2005-03-03 | Soken Chem & Eng Co Ltd | 低極性フィルム用粘着剤 |
JP2006058718A (ja) | 2004-08-23 | 2006-03-02 | Lintec Corp | 偏光フイルム用感圧接着剤組成物 |
KR20060060264A (ko) | 2004-11-30 | 2006-06-05 | 비오이 하이디스 테크놀로지 주식회사 | 액정표시장치 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60207101A (ja) * | 1984-03-31 | 1985-10-18 | Sekisui Chem Co Ltd | 偏光板 |
DE3920935A1 (de) * | 1989-06-27 | 1991-01-03 | Basf Ag | Waessrige kunstharzdispersionen |
DE4202071C2 (de) * | 1992-01-25 | 1994-09-01 | Neschen Hans Gmbh & Co Kg | Druckempfindlicher Haftkleber und dessen Verwendung zur Herstellung von selbstklebenden, flächigen Substraten |
US5310835A (en) * | 1993-09-30 | 1994-05-10 | National Starch And Chemical Investment Holding Corporation | Transparent two-part acrylic adhesive composition and the method of use thereof |
DE4405568C2 (de) * | 1994-02-14 | 1998-04-16 | Hans Neschen Gmbh | Verwendung eines Haftklebers auf Basis von wäßrigen Dispersionen zur Herstellung von Klebefolien |
JP3533589B2 (ja) * | 1997-04-09 | 2004-05-31 | 綜研化学株式会社 | 偏光板用粘着剤組成物および偏光板 |
JP3921017B2 (ja) * | 1999-10-08 | 2007-05-30 | リンテック株式会社 | 感圧接着剤シート |
US6663978B1 (en) * | 2000-06-28 | 2003-12-16 | 3M Innovative Properties Company | High refractive index pressure-sensitive adhesives |
JP4137014B2 (ja) | 2004-06-22 | 2008-08-20 | 大倉工業株式会社 | 床面養生フィルム |
EP1780561B1 (en) * | 2004-07-22 | 2012-05-23 | Soken Chemical & Engineering Co. Ltd., | Adhesive composition for polarizing plate and polarizing plate |
JP4521522B2 (ja) | 2004-11-08 | 2010-08-11 | 綜研化学株式会社 | 光学部材およびその製造方法 |
EP1931744B1 (en) * | 2005-09-05 | 2016-05-04 | LG Chem, Ltd. | Acrylic pressure-sensitive adhesive composition for polarizing film |
US7825189B2 (en) | 2005-11-21 | 2010-11-02 | Soken Chemical & Engineering Co., Ltd. | Adhesive composition for optical film, adhesive sheet, and optical member using such adhesive composition |
KR100932887B1 (ko) | 2005-12-14 | 2009-12-21 | 주식회사 엘지화학 | 아크릴계 점착제 조성물 |
JP2007169329A (ja) | 2005-12-19 | 2007-07-05 | Saiden Chemical Industry Co Ltd | 光学用粘着剤組成物および粘着シート |
KR100932888B1 (ko) * | 2006-07-21 | 2009-12-21 | 주식회사 엘지화학 | 광학 보상된 아크릴계 점착제 조성물, 이를 포함하는편광판 및 액정표시소자 |
US8372492B2 (en) * | 2006-12-15 | 2013-02-12 | Nitto Denko Corporation | Pressure-sensitive adhesive optical film and image display |
KR100775440B1 (ko) * | 2006-12-20 | 2007-11-12 | 동우신테크 주식회사 | 리세드로네이트 나트륨 헤미펜타히드레이트의 제조방법 |
US7767286B2 (en) * | 2006-12-28 | 2010-08-03 | Fujifilm Corporation | Polarizing plate and liquid crystal display device |
KR100948778B1 (ko) | 2007-01-23 | 2010-03-24 | 주식회사 엘지화학 | 광학 보상된 아크릴계 점착제 조성물, 이를 포함하는편광판 및 액정표시소자 |
KR101019064B1 (ko) * | 2008-01-14 | 2011-03-07 | 주식회사 엘지화학 | 아크릴계 점착제 조성물 |
-
2008
- 2008-01-14 KR KR1020080004044A patent/KR101019064B1/ko active IP Right Grant
-
2009
- 2009-01-12 AT AT09702625T patent/ATE546504T1/de active
- 2009-01-12 WO PCT/KR2009/000152 patent/WO2009091162A2/ko active Application Filing
- 2009-01-12 JP JP2010542177A patent/JP5421288B2/ja active Active
- 2009-01-12 EP EP09702625A patent/EP2233546B1/en active Active
- 2009-01-12 US US12/812,736 patent/US9482896B2/en active Active
- 2009-01-12 CN CN200980102145XA patent/CN101910347B/zh active Active
- 2009-01-12 TW TW098100940A patent/TWI393757B/zh active
-
2013
- 2013-11-07 US US14/074,274 patent/US9798185B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61207101A (ja) | 1985-03-08 | 1986-09-13 | Mitsubishi Electric Corp | 電気車用制動制御装置 |
JP2002173656A (ja) | 2000-12-04 | 2002-06-21 | Nitto Denko Corp | 感圧性接着剤組成物、感圧性接着シート及び光学フィルム |
JP2002332468A (ja) | 2001-04-25 | 2002-11-22 | Three M Innovative Properties Co | 耐可塑剤性粘着剤組成物及び粘着剤物品 |
JP2003013029A (ja) | 2001-07-02 | 2003-01-15 | Nitto Denko Corp | 粘着剤、粘着部材及び表示装置 |
KR20030069461A (ko) | 2002-02-20 | 2003-08-27 | 주식회사 엘지화학 | 아크릴계 점착제 조성물 |
JP2005053976A (ja) | 2003-08-06 | 2005-03-03 | Soken Chem & Eng Co Ltd | 低極性フィルム用粘着剤 |
JP2006058718A (ja) | 2004-08-23 | 2006-03-02 | Lintec Corp | 偏光フイルム用感圧接着剤組成物 |
KR20060060264A (ko) | 2004-11-30 | 2006-06-05 | 비오이 하이디스 테크놀로지 주식회사 | 액정표시장치 |
Non-Patent Citations (1)
Title |
---|
APPLIED OPTICS, 1997 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2330170A1 (en) * | 2008-09-01 | 2011-06-08 | Nippon Carbide Industries Co., Inc. | Pressure-sensitive adhesive composition, pressure-sensitive adhesive and optical film |
EP2330170A4 (en) * | 2008-09-01 | 2012-12-05 | Nippon Carbide Kogyo Kk | STICKER ADHESIVE COMPOSITION, STICKER ADHESIVE AND OPTICAL FILM |
US8927071B2 (en) | 2008-09-01 | 2015-01-06 | Nippon Carbide Industries Co., Inc. | Pressure-sensitive adhesive composition, pressure-sensitive adhesive and optical film |
JP2011105918A (ja) * | 2009-11-20 | 2011-06-02 | Nitto Denko Corp | 光学フィルム用粘着剤組成物、光学フィルム用粘着剤層、粘着型光学フィルムおよび画像表示装置 |
JP2011132504A (ja) * | 2009-11-27 | 2011-07-07 | Nippon Synthetic Chem Ind Co Ltd:The | 粘着剤、光学部材用粘着剤、粘着剤層付き光学部材、画像表示装置、及び粘着剤組成物 |
JP2011122104A (ja) * | 2009-12-11 | 2011-06-23 | Saiden Chemical Industry Co Ltd | 偏光板用粘着剤組成物 |
Also Published As
Publication number | Publication date |
---|---|
JP5421288B2 (ja) | 2014-02-19 |
KR101019064B1 (ko) | 2011-03-07 |
US20110043737A1 (en) | 2011-02-24 |
KR20090078211A (ko) | 2009-07-17 |
US9482896B2 (en) | 2016-11-01 |
EP2233546B1 (en) | 2012-02-22 |
JP2011510114A (ja) | 2011-03-31 |
US9798185B2 (en) | 2017-10-24 |
EP2233546A4 (en) | 2010-12-15 |
TW200936724A (en) | 2009-09-01 |
TWI393757B (zh) | 2013-04-21 |
WO2009091162A3 (ko) | 2009-11-05 |
EP2233546A2 (en) | 2010-09-29 |
CN101910347B (zh) | 2013-02-06 |
US20140093662A1 (en) | 2014-04-03 |
CN101910347A (zh) | 2010-12-08 |
ATE546504T1 (de) | 2012-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009091162A2 (ko) | 아크릴계 점착제 조성물 | |
KR101171977B1 (ko) | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 | |
KR100932888B1 (ko) | 광학 보상된 아크릴계 점착제 조성물, 이를 포함하는편광판 및 액정표시소자 | |
WO2009088191A2 (ko) | 점착제 조성물, 이를 포함하는 점착 편광판 및 액정표시장치 | |
KR100831558B1 (ko) | 편광판용 아크릴계 점착제 조성물 | |
TWI402320B (zh) | 丙烯酸壓感型黏著劑組成物,含其之保護膜,偏光板及液晶顯示器 | |
WO2010120105A2 (ko) | 점착제 조성물 | |
US9469663B2 (en) | Optically compensated acrylic pressure-sensitive adhesive composition, polarizing plate and liquid crystal display device containing the same | |
KR20070063365A (ko) | 아크릴계 점착제 조성물 | |
KR101133064B1 (ko) | 아크릴계 점착제 조성물, 이를 포함하는 편광판 및액정표시장치 | |
WO2017099537A1 (ko) | 점착제 조성물 | |
WO2016099187A1 (ko) | 점착제 조성물 | |
KR100955334B1 (ko) | 빛샘 현상이 개선된 점착층을 가지는 편광판 | |
WO2012128594A2 (ko) | 광학 필름용 점착제 조성물 | |
KR101202532B1 (ko) | 아크릴계 점착제 조성물 | |
KR101233901B1 (ko) | 아크릴계 점착제 조성물 | |
WO2014196766A1 (ko) | 아크릴계 공중합체, 이를 함유한 점착제 조성물 및 편광판 | |
KR101202571B1 (ko) | 점착제 조성물, 상기를 포함하는 편광판 및 액정표시장치 | |
KR101770448B1 (ko) | 점착제 조성물 | |
WO2015080456A1 (ko) | 점착제 조성물 | |
WO2018182120A1 (ko) | 편광판 및 이를 포함하는 화상 표시 장치 | |
WO2014163329A1 (ko) | 점착제 조성물 | |
WO2013176438A1 (ko) | 아크릴계 공중합체 및 이를 함유하는 점착제 조성물 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980102145.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09702625 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009702625 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010542177 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12812736 Country of ref document: US |