WO2022005139A1 - 점착제 조성물 및 그를 이용한 점착 시트 - Google Patents
점착제 조성물 및 그를 이용한 점착 시트 Download PDFInfo
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- WO2022005139A1 WO2022005139A1 PCT/KR2021/008117 KR2021008117W WO2022005139A1 WO 2022005139 A1 WO2022005139 A1 WO 2022005139A1 KR 2021008117 W KR2021008117 W KR 2021008117W WO 2022005139 A1 WO2022005139 A1 WO 2022005139A1
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- sensitive adhesive
- pressure
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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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- 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
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/08—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
-
- 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
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09J175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- 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
-
- 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
-
- 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
-
- 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
- C09J2475/00—Presence of polyurethane
Definitions
- the present invention provides a pressure-sensitive adhesive sheet formed using the pressure-sensitive adhesive composition.
- a C 1 -C 10 alkylene group means a straight-chain or branched hydrocarbon consisting of 1 to 10 carbon atoms, for example, methylene, ethylene, propylene, butylene, pentylene, hexylene, etc. included, but not limited thereto.
- a C 3 -C 10 cycloalkylene group refers to a simple or fused cyclic hydrocarbon consisting of 3 to 10 carbon atoms, for example, cyclopropylene, cyclobutylene, cyclopentylene, cyclohexylene, etc. included, but not limited thereto.
- the arylene group includes both an aromatic group, a heteroaromatic group, and partially reduced derivatives thereof.
- the aromatic group is a 5-membered to 15-membered simple or fused cyclic group
- the heteroaromatic group refers to an aromatic group containing at least one oxygen, sulfur or nitrogen.
- Representative examples of the arylene group include, but are not limited to, tolylene, phenylene, naphthylene, and the like.
- the hydroxy group-containing polyolefin may be obtained commercially or may be prepared and used by a method known in the art.
- the hydroxyl group-containing polyolefin may be prepared by reacting the polyolefin with an epoxy compound.
- an epoxy compound ethylene oxide, propylene oxide, or the like may be used.
- examples of commercially available hydroxy group-containing polyolefins include GI-1000, GI-2000, and GI-3000 manufactured by Nippon Soda Corporation.
- diisocyanate compound an aliphatic diisocyanate compound and/or an aromatic diisocyanate compound may be used.
- Examples of the aliphatic diisocyanate compound include methyl diisocyanate, 1,2-ethanediyl diisocyanate, 1,3-propanediyl diisocyanate, 1,6-hexanediyl diisocyanate, and 3-methyl-octane-1,8-diyl diisocyanate.
- aromatic diisocyanate compound examples include 1,2-phenylene diisocyanate, 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate, 3-chloro-1,2-benzene diisocyanate, and 4-chloro- 1,2-benzene diisocyanate, 5-chloro-1,2-benzene diisocyanate, 2-chloro-1,3-benzene diisocyanate, 4-chloro-1,3-benzene diisocyanate, 5-chloro-1, 3-Benzene diisocyanate, 2-chloro-1,4-benzene diisocyanate, 3-chloro-1,4-benzene diisocyanate, 3-methyl-1,2-benzene diisocyanate, 4-methyl-1,2- Benzene diisocyanate, 5-methyl-1,2-benzene diisocyanate, 2-methyl-1,3-benzene diisocyanate, 4-methyl-1,3-benzene diisocyanate, 5-methyl-1,
- Examples of the C 1 -C 10 alcohol compound include methanol, ethanol, n-propanol, and butanol.
- the urethane oligomer may have a weight average molecular weight (in terms of polystyrene) of 1,000 to 200,000 measured by gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- (meth)acryl means acryl and/or methacryl.
- the diluent monomer may be appropriately selected and used so that the weight ratio of heteroatoms is 16.5% or less.
- the diluent monomer contains at least one of a (meth)acrylic monomer having an aliphatic hydrocarbon group having 10 or more carbon atoms and a vinyl ether monomer having an aliphatic hydrocarbon group having 8 or more carbon atoms in an amount of 20% by weight or more, based on 100% by weight of the total monomer, e.g. For example, it may be included in an amount of 20 to 99% by weight, preferably 20 to 90% by weight.
- the content of at least one of the (meth)acrylic monomer having an aliphatic hydrocarbon group having 10 or more carbon atoms and the vinyl ether monomer having an aliphatic hydrocarbon group having 8 or more carbon atoms is less than 20% by weight, it is difficult to control the weight ratio of heteroatoms to be 16.5% or less can
- the aliphatic hydrocarbon group having 10 or more carbon atoms is a straight or branched chain having 10 or more carbon atoms, for example, 10 to 100, preferably 10 to 50, more preferably 10 to 30. It means a saturated or unsaturated hydrocarbon, and, for example C 10 -C 100 alkyl group, C 10 -C 100 alkenyl groups, may be an alkynyl of C 10 -C 100.
- the aliphatic hydrocarbon group having 10 or more carbon atoms includes, but is not limited to, decyl, isodecyl, undecyl, dodecyl, tridecyl, cetyl, stearyl, isostearyl, heptacosanyl, and the like.
- the aliphatic hydrocarbon group having 8 or more carbon atoms is a straight or branched chain consisting of 8 or more carbon atoms, for example 8 to 100, preferably 8 to 50, more preferably 8 to 30. It means a saturated or unsaturated hydrocarbon group, and for example, it may be a C 8 -C 100 alkyl group, C 8 -C 100 alkenyl group, or C 8 -C 100 alkynyl group.
- the aliphatic hydrocarbon group having 8 or more carbon atoms includes octyl, ethylhexyl, nonyl, decyl, isodecyl, undecyl, dodecyl, tridecyl, cetyl, stearyl, isostearyl, heptacosanyl, and the like. it is not
- the (meth)acryl monomer having an aliphatic hydrocarbon group having 10 or more carbon atoms is a compound having an aliphatic hydrocarbon group having 10 or more carbon atoms and a (meth)acrylate group as a radically polymerizable functional group.
- the (meth)acrylic monomer having an aliphatic hydrocarbon group having 10 or more carbon atoms decyl (meth)acrylate, isodecyl (meth)acrylate, undecyl (meth)acrylate, dodecyl (meth)acrylate, Tridecyl (meth) acrylate, cetyl (meth) acrylate, stearyl (meth) acrylate, isostearyl (meth) acrylate, 1-heptacosanyl (meth) acrylate, etc. may be used, and these may be used alone. It can be used alone or in combination of two or more.
- the vinyl ether monomer having an aliphatic hydrocarbon group having 8 or more carbon atoms is a compound having an aliphatic hydrocarbon group having 8 or more carbon atoms and a vinyl ether group as a radically polymerizable functional group.
- vinyl ether monomer having an aliphatic hydrocarbon group having 8 or more carbon atoms 2-ethylhexyl vinyl ether, dodecyl vinyl ether, etc. may be used, and these may be used alone or in combination of two or more.
- Examples of the monomer having a carboxyl group include monoacids such as (meth)acrylic acid, crotonic acid, and 2-carboxyethyl acrylate; diacids, such as maleic acid, itaconic acid, and fumaric acid, and monoalkyl esters thereof; 3-(meth)acryloylpropionic acid; a ring-opening adduct of succinic anhydride of 2-hydroxyalkyl (meth)acrylate having an alkyl group having 2-3 carbon atoms; Ring-opening adduct of succinic anhydride of hydroxyalkylene glycol (meth)acrylate having 2-4 carbon atoms in the alkylene group; and a compound obtained by ring-opening addition of succinic anhydride to a caprolactone adduct of 2-hydroxyalkyl (meth)acrylate having an alkyl group having 2-3 carbon atoms.
- (meth)acrylic acid and 2-carboxyethyl acrylate
- the diluent monomer may further include other polymerizable monomers in addition to the monomers.
- the other polymerizable monomer examples include n-butyl (meth) acrylate, 2-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, ethyl (meth) ) acrylate, methyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, pentyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylic a rate, nonyl (meth)acrylate, isobornyl (meth)acrylate, etc. are mentioned, Among these, 2-ethylhexyl (meth)acrylate and isobornyl (meth)acrylate are preferable. These can be used individually or in mixture of 2 or more types.
- the other polymerizable monomer may be included in an amount of 79.5 wt% or less, for example, 1 to 79.5 wt%, preferably 5 to 79.5 wt%, based on 100 wt% of the total monomers.
- content of the other polymerizable monomer is more than 79.5% by weight, it may be difficult to control the weight ratio of heteroatoms to be 16.5% or less.
- the photoinitiator means an initiator that absorbs an active energy ray to generate a radical.
- the photoinitiators include, for example, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin n-butyl ether, benzoin isobutyl ether, acetophenone, dimethylaminoacetophenone, 2, 2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenylketone , 2-Methyl-1-[4-(methylthio)phenyl]-2-morpholino-propan-1-one, 4-(2-hydroxyethoxy)phenyl-2-(hydroxy-2-propyl ) ketone, benzophenone, p-phenylbenzophenone, 4,4'-bis(diethylamino)benzophenone (EAB-F), dichlorobenzophenone, 2-methyl anthr
- the photoinitiator may be included in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the dilution monomer. If it is less than 0.01 parts by weight, photocuring does not proceed sufficiently, making it difficult to implement mechanical properties or adhesion of the finally obtained pressure-sensitive adhesive sheet.
- the pressure-sensitive adhesive composition according to an embodiment of the present invention in addition to the above components, a silane coupling agent, a tackifying resin in order to control the adhesive force, cohesive force, viscosity, elastic modulus, glass transition temperature, antistatic property, etc. required according to the use , antioxidants, corrosion inhibitors, leveling agents, surface lubricants, dyes, pigments, defoamers, fillers, light stabilizers, may further include additives such as antistatic agents.
- One embodiment of the present invention relates to a pressure-sensitive adhesive sheet formed using the pressure-sensitive adhesive composition.
- the pressure-sensitive adhesive sheet may be one in which the pressure-sensitive adhesive layer is formed from the pressure-sensitive adhesive composition according to the present invention on the base film, or the pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition according to the present invention is interposed between two base films.
- the base film may include a polyolefin-based film, a polyester-based film, an acrylic film, a styrene-based film, an amide-based film, a polyvinyl chloride film, a polyvinylidene chloride film, a polycarbonate film, and the like, and these are silicone-based, fluorine-based, silica It may be a mold release treatment suitably made with powder or the like.
- the thickness of the base film is preferably 30 to 80 ⁇ m. When the thickness is less than 30 ⁇ m, the base film is vulnerable to engraving defects, and when it exceeds 80 ⁇ m, handling properties may be deteriorated.
- An adhesive layer can be formed by the method of coating an adhesive composition on one base film.
- the coating method is not particularly limited as long as it is a method known in the art, and for example, a method such as a bar coater, air knife, gravure, reverse roll, kiss roll, spray, blade, die coater, casting, spin coating, etc. can be used. .
- it can be formed by coating the pressure-sensitive adhesive composition on one base film, irradiating it with an ultraviolet irradiation amount of about 100 to 2000 mJ/cm 2 , preferably 200 to 1500 mJ/cm 2 , and photocuring it.
- the pressure-sensitive adhesive layer may have a thickness of 10 to 2,000 ⁇ m, preferably 25 to 1,500 ⁇ m. If the thickness of the pressure-sensitive adhesive layer is less than 10 ⁇ m, it may be difficult to buffer an impact generated from the outside, and if it exceeds 2,000 ⁇ m, transmission may be lowered and optical performance may be deteriorated.
- the adhesive sheet according to an embodiment of the present invention may improve adhesion by surface-treating the adhesive layer before bonding.
- the surface treatment method is not particularly limited, and for example, the surface of the pressure-sensitive adhesive layer may be activated by a method such as corona discharge treatment, plasma treatment, ultraviolet irradiation, electron beam irradiation, or applying an anchoring agent.
- the pressure-sensitive adhesive sheet according to an embodiment of the present invention is applicable to not only a general flat panel display and a flexible display but also a foldable display.
- the pressure-sensitive adhesive sheet according to an embodiment of the present invention can be effectively applied to interlayer adhesion using a high frequency band or laminating components in a thin display device.
- the adhesive sheet may be applied to bonding of various display materials such as an antenna, a display panel, a polarizer, a touch sensor, a cover window, a bezel, a polymer film, and an FPCB, and in particular, may be applied to bonding of an antenna or a touch sensor.
- 2-hydroxyethyl acrylate 9 to an isocyanate polymer obtained by reacting 80 parts by weight of hydrogenated polybutadiene polyol (EPOL, Idemitsu Kosan) with 500 ppm of dibutyltindilaurate catalyst (DBTDL) and 10 parts by weight of isophorone diisocyanate at 80° C.
- EPOL hydrogenated polybutadiene polyol
- DBTDL dibutyltindilaurate catalyst
- a urethane oligomer having a weight average molecular weight of 100,000 was prepared by reacting parts by weight.
- 2-hydroxyethyl acrylate 9 to an isocyanate polymer obtained by reacting 80 parts by weight of polybutadiene polyol (Poly bd, Idemitsu Kosan) with 500 ppm of dibutyltindilaurate catalyst (DBTDL) and 10 parts by weight of isophorone diisocyanate at 80° C.
- a urethane oligomer having a weight average molecular weight of 110,000 was prepared by reacting parts by weight.
- 2-hydroxyethyl acrylate 9 to an isocyanate polymer obtained by reacting 80 parts by weight of polyisoprene polyol (Poly ip, Idemitsu Kosan) with 500 ppm of dibutyltindilaurate catalyst (DBTDL) and 10 parts by weight of isophorone diisocyanate at 80° C.
- a urethane oligomer having a weight average molecular weight of 123,000 was prepared by reacting parts by weight.
- IBOA isobornyl acrylate
- Photoinitiator 1-hydroxycyclohexyl phenylketone
- the pressure-sensitive adhesive compositions of Examples 1 to 7 and Comparative Examples 1 to 3 prepared above were coated on a polyethylene terephthalate film (thickness: 75 ⁇ m) treated as a release film using a bar coater. Thereafter, a pressure-sensitive adhesive sheet was prepared so that the thickness after curing of the pressure-sensitive adhesive composition was 150 ⁇ m by irradiating ultraviolet rays with a light amount of 1.5 J/cm 2 for 10 minutes using a UV lamp to cure the pressure-sensitive adhesive composition.
- the dielectric constant and dielectric loss tangent were measured using a dielectric constant measuring device (Anritsu Corporation, product name: MS46522B) at a temperature of 25° C. and a humidity of 50%.
- a 150 ⁇ m adhesive sheet from which the release film was removed was laminated between the upper and lower 40 ⁇ m COP films (Zeonor) and cut to a size of 30mm in length ⁇ 70mm in width.
- the cut adhesive sheet was put into a probe of a measuring device, and the dielectric constant (Dk) and dielectric loss tangent (Df) values at 15 GHz were measured.
- the pressure-sensitive adhesive sheets of Examples 1 to 7 in which the weight ratio of heteroatoms in the dilution monomer is 16.5% or less, have a dielectric constant of less than 2.5 and a dielectric loss tangent of 0.015 or less even in a high frequency band of 15 GHz. It was confirmed that it exhibits low dielectric properties. Accordingly, the adhesive sheets of Examples 1 to 7 do not lower the antenna gain value when applied to an antenna using a high frequency band, thereby enabling faster antenna transmission and reception, and even when the image display device is thinned, touch It was found that there was no effect on the operation of the sensor.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
| 구분 | 실시예1 | 실시예2 | 실시예3 | 실시예4 | 실시예5 | 실시예6 | 실시예7 | 실시예8 | 비교예1 | 비교예2 | 비교예3 | |||
| 우레탄 올리고머 | 제조예 1 | 20 | 20 | 20 | 20 | 10 | 20 | 20 | 20 | 20 | ||||
| 제조예 2 | 20 | |||||||||||||
| 제조예 3 | 20 | |||||||||||||
| 희석 모노머 |
IBOA | C13H20O2 | 208.1 | 30 | 30 | 40 | 30 | |||||||
| IBOMA | C14H22O2 | 222.1 | 30 | |||||||||||
| 2-EHA | C11H20O2 | 184.1 | 20 | 47 | 55 | 20 | 55 | 55 | 55 | 20 | 50 | |||
| 2-EHVE | C10H20O | 156.1 | 57 | |||||||||||
| i-SA | C21H40O2 | 324.5 | 40 | 20 | 40 | 20 | 40 | 40 | 40 | |||||
| 1-HCA | C30H58O2 | 450.8 | 40 | |||||||||||
| BA | C7H12O2 | 128.0 | 68 | 98 | ||||||||||
| 2-HEA | C5H8O3 | 116.0 | 10 | 10 | 10 | |||||||||
| 4-HBA | C7H12O3 | 144.0 | 5 | 3 | 5 | 5 | 5 | |||||||
| AA | C3H4O2 | 72.0 | 3 | 2 | 2 | |||||||||
| 헤테로원자 중량 비율(%) | 16.0 | 15.7 | 15.0 | 12.2 | 15.0 | 15.0 | 15.0 | 15.1 | 19.0 | 22.7 | 25.4 | |||
| 광개시제 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | |||
| 실시예 | 비교예 | ||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 | |
| 유전율 | 2.45 | 2.41 | 2.36 | 2.23 | 2.22 | 2.24 | 2.30 | 2.34 | 2.48 | 2.51 | 2.54 |
| 유전정접 | 0.013 | 0.011 | 0.010 | 0.002 | 0.004 | 0.003 | 0.008 | 0.011 | 0.024 | 0.026 | 0.029 |
Claims (7)
- 우레탄 올리고머, 희석 모노머 및 광개시제를 함유하는 점착제 조성물로서,상기 희석 모노머 내 헤테로원자의 중량 비율은 16.5% 이하이고,경화 후 150 ㎛ 두께의 점착제층의 15GHz에서의 유전율은 2.5 미만이며, 경화 후 150 ㎛ 두께의 점착제층의 15GHz에서의 유전정접이 0.015 이하인 점착제 조성물.
- 제1항에 있어서, 상기 우레탄 올리고머는 폴리에틸렌, 폴리프로필렌, 폴리부타디엔, 폴리이소프렌, 수첨 폴리부타디엔 및 수첨 폴리이소프렌으로 구성된 군으로부터 선택되는 하나 이상의 골격을 가지고, 적어도 한쪽 말단에 라디칼 중합성 관능기를 갖는 것인 점착제 조성물.
- 제2항에 있어서, 상기 라디칼 중합성 관능기는 (메타)아크릴로일옥시기 또는 비닐기인 점착제 조성물.
- 제1항에 있어서, 상기 우레탄 올리고머는 상기 희석 모노머 100 중량부에 대하여 5 내지 50 중량부의 양으로 함유되는 점착제 조성물.
- 제1항에 있어서, 상기 희석 모노머는 (메타)아크릴 모노머 및 비닐 모노머 중 하나 이상을 포함하는 점착제 조성물.
- 제1항에 있어서, 상기 광개시제는 상기 희석 모노머 100 중량부에 대하여 0.01 내지 5 중량부의 양으로 함유되는 점착제 조성물.
- 제1항 내지 제6항 중 어느 한 항에 따른 점착제 조성물을 이용하여 형성된 점착 시트.
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| JP2022581683A JP7736724B2 (ja) | 2020-07-01 | 2021-06-28 | 粘着剤組成物及びそれを用いた粘着シート |
| US18/003,978 US12552976B2 (en) | 2020-07-01 | 2021-06-28 | Adhesive composition and adhesive sheet using the same |
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| KR1020200081191A KR102229884B1 (ko) | 2020-07-01 | 2020-07-01 | 점착제 조성물 및 그를 이용한 점착 시트 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2023147244A (ja) * | 2022-03-29 | 2023-10-12 | 荒川化学工業株式会社 | 活性エネルギー線硬化型粘着剤組成物、硬化物及び粘着シート |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102229884B1 (ko) * | 2020-07-01 | 2021-03-18 | 동우 화인켐 주식회사 | 점착제 조성물 및 그를 이용한 점착 시트 |
| KR102318161B1 (ko) * | 2021-04-01 | 2021-10-26 | 동우 화인켐 주식회사 | 접착제 조성물 및 전지용 포장재료 |
| KR102752694B1 (ko) * | 2022-01-13 | 2025-01-10 | 동우 화인켐 주식회사 | 점착 시트 및 이를 포함하는 안테나 구조체 |
| KR20230126307A (ko) | 2022-02-22 | 2023-08-30 | 삼성디스플레이 주식회사 | 수지 조성물, 및 이를 포함한 디스플레이 장치 |
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| Publication number | Publication date |
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| JP7736724B2 (ja) | 2025-09-16 |
| KR102229884B1 (ko) | 2021-03-18 |
| US12552976B2 (en) | 2026-02-17 |
| JP2023533511A (ja) | 2023-08-03 |
| US20230265323A1 (en) | 2023-08-24 |
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