WO2015056467A1 - 粘着シート - Google Patents
粘着シート Download PDFInfo
- Publication number
- WO2015056467A1 WO2015056467A1 PCT/JP2014/066570 JP2014066570W WO2015056467A1 WO 2015056467 A1 WO2015056467 A1 WO 2015056467A1 JP 2014066570 W JP2014066570 W JP 2014066570W WO 2015056467 A1 WO2015056467 A1 WO 2015056467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base material
- sensitive adhesive
- pressure
- adhesive sheet
- layer
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6275—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds
- C08G18/6279—Polymers of halogen containing compounds having carbon-to-carbon double bonds; halogenated polymers of compounds having carbon-to-carbon double bonds containing fluorine atoms
-
- 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
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—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
- 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
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
-
- 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
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only 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
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
-
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/306—Applications of adhesives in processes or use of adhesives in the form of films or foils for protecting painted surfaces, e.g. of cars
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- 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
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated polymer in the substrate
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
-
- 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
- C09J2471/00—Presence of polyether
- C09J2471/006—Presence of polyether in the substrate
-
- 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
- C09J2475/006—Presence of polyurethane in the substrate
Definitions
- Hals hybrid (meth) acrylic polymer is an acrylic polymer obtained by copolymerizing a reactive hindered amine light stabilizer (HALS) and a reactive UVA (ultraviolet absorber).
- HALS reactive hindered amine light stabilizer
- UVA ultraviolet absorber
- isocyanate-based crosslinking agent examples include hydrogenated xylylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, ethylene diisocyanate, 1,4-tetramethylene diisocyanate, trimethylhexamethylene diisocyanate, norbornene diisocyanate, Duranate AE700 (Asahi Kasei).
- the base material can be laminated with another film on the base material layer as long as the effects of the present invention are not impaired.
- materials for forming other films include polyester resins such as polyethylene terephthalate (PET), polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyimide (PI), and polyetheretherketone (PEEK).
- thermoplastic resins such as polyvinyl chloride (PVC), polyvinylidene chloride resins, polyamide resins, polyurethane resins, polystyrene resins, acrylic resins, fluorine resins, cellulose resins, polycarbonate resins, etc.
- thermosetting resins thermosetting resins.
- an acrylic adhesive an acrylic copolymer obtained by copolymerizing a monomer component mainly composed of an acrylate ester and a monomer component having a functional group such as a carboxyl group or a hydroxyl group (may be two or more types)
- An acrylic pressure-sensitive adhesive containing can be used.
- the following monomer components can be copolymerized with the above alkyl (meth) acrylate.
- copolymerizable monomer components include monomers containing carboxyl groups such as (meth) acrylic acid, itaconic acid, maleic acid, crotonic acid, fumaric acid, carboxyethyl (meth) acrylate, carboxypentyl (meth) acrylate, and the like.
- the pressure-sensitive adhesive layer is formed by, for example, applying a solvent-based or emulsion-based pressure-sensitive adhesive directly to the base material layer and drying, or applying these pressure-sensitive adhesives to release paper to form a pressure-sensitive adhesive layer in advance.
- a method of bonding the pressure-sensitive adhesive layer to the base material layer or the like can be applied. It is also possible to apply a method in which a radiation curable pressure-sensitive adhesive is applied to a base material layer, and both the pressure-sensitive adhesive layer and the film are irradiated with radiation to simultaneously cure and form the base material layer and the pressure-sensitive adhesive layer. it can.
- the weight increase rate of fuel such as gasoline was measured. That is, the measurement sample was produced by cutting the base material into a size of 30 mm width ⁇ 30 mm length. The measurement sample was immersed in an organic solvent in which regular gasoline and ethanol were mixed at a ratio of 90% by weight / 10% by weight, and the weight when 30 minutes passed was measured. The weight increase rate of the chemical (ex. Organic solvent) was determined using the following calculation formula.
- Weight increase rate (%) ⁇ (weight after 30 minutes of chemical immersion ⁇ weight before immersion) / weight before immersion ⁇ ⁇ 100
- Example 1 A non-yellowing adipate ester-based thermoplastic polyurethane film having a thickness of 240 ⁇ m and a Shore hardness of 85 A was used as a base material layer to prepare a base material consisting only of the base material layer. The obtained substrate was subjected to 5% elongation load measurement, stress relaxation rate measurement, and chemical resistance evaluation. The results are shown in Table 1.
- Example 3 A non-yellowing caprolactone ester-based thermoplastic polyurethane film having a thickness of 150 ⁇ m and a Shore hardness of 97 A was used as a base material layer to prepare a base material consisting only of the base material layer. The obtained substrate was subjected to 5% elongation load measurement, stress relaxation rate measurement, and chemical resistance evaluation. The results are shown in Table 1.
- the resin composition for the surface protective layer was applied so that the thickness after curing was 10 ⁇ m, and dried and cured at a temperature of 120 ° C. for 2 minutes.
- the surface protective layer was formed on the base material layer, and the base material was produced.
- the obtained substrate was subjected to 5% elongation load measurement, stress relaxation rate measurement, and chemical resistance evaluation. The results are shown in Table 1.
- Example 6 As the base material layer, the non-yellowing caprolactone ester-based thermoplastic polyurethane film having a thickness of 240 ⁇ m and a shore hardness of 95 A used in Example 2 was used. On this film, 100 parts of a 50% concentration solution of fluoroethylene / vinyl ether alternating copolymer in xylene and toluene (trade name “Lumiflon LF600” manufactured by Asahi Glass Co., Ltd.) and an isocyanate cross-linking agent (Nippon Polyurethane ( Co., Ltd., trade name “Coronate HX”) and the resin composition for the surface protective layer obtained by adding 76.46 parts of ethyl acetate as a diluting solvent.
- a 50% concentration solution of fluoroethylene / vinyl ether alternating copolymer in xylene and toluene trade name “Lumiflon LF600” manufactured by Asahi Glass Co., Ltd.
- Examples 1 to 6 and Comparative Examples 1 to 3 were also comprehensively evaluated.
- the load at 5% elongation is 10 N / 10 mm or less
- the stress relaxation rate is 40% or more and 100% or less
- the chemical weight increase rate is 60% or less
- the symbol “ ⁇ ” When any one of them is not satisfied, it is indicated by a symbol “x”.
- An adhesive sheet was prepared using the base materials of Examples 1 to 6.
- ⁇ Production of adhesive layer >> To a mixture of 90 parts of isononyl acrylate and 10 parts of acrylic acid as a monomer component, 0.05 part of trade name “Irgacure 651” (manufactured by Ciba Specialty Chemicals) is used as a photopolymerization initiator. After mixing “Irgacure 184” (manufactured by Ciba Specialty Chemicals Co., Ltd.) with 0.05 part, UV is applied until the viscosity reaches about 25 Pa ⁇ s (BH viscometer No. 5 rotor, 10 rpm, measurement temperature 30 ° C.). Was irradiated to produce an acrylic composition (UV syrup) partially polymerized.
- the pressure-sensitive adhesive composition was applied as a temporary support 2 to a release-treated surface of a polyethylene terephthalate film having a thickness of 50 ⁇ m so that the final product had a thickness of 50 ⁇ m.
- a peel-treated PET film as a separator is overlaid and coated, and then the surface of the PET film is cured by irradiating with ultraviolet rays (illuminance 290 mW / cm 2 , light amount 4,600 mJ / cm 2 ) using a metal halide lamp.
- ultraviolet rays illumination 290 mW / cm 2 , light amount 4,600 mJ / cm 2
- an adhesive layer was formed on the temporary support 2. Then, it was made to dry at 140 degreeC for 3 minute (s), the unreacted residual acrylic monomer was dried, and the adhesive layer was produced.
- the substrates obtained in Examples 4 to 6 were adhered and adhered so that the pressure-sensitive adhesive layer overlapped on the surface of the substrate opposite to the surface on the surface protective layer side (that is, the substrate layer surface).
- a sheet (layer structure of temporary support 1 / surface protective layer / base material layer / adhesive layer / temporary support 2) was prepared.
- Each of the pressure-sensitive adhesive sheets obtained using the base materials of Examples 1 to 6 is excellent in curved surface followability and can follow well even in a portion having a three-dimensional curved surface. It has been found that it can be applied neatly without floating or floating, and that excellent chemical resistance can be realized.
- an adhesive sheet excellent in all of flexibility, stress relaxation rate, and chemical resistance could be realized.
- the pressure-sensitive adhesive sheet of the present invention can be suitably used as a protective pressure-sensitive adhesive sheet that requires resistance to chemicals such as organic solvents.
- the pressure-sensitive adhesive sheet of the present invention can be suitably used as a pressure-sensitive adhesive sheet that also requires flexibility for curved surfaces and the like, and particularly for adherends (adherents) having severe three-dimensional curved surfaces. It can be preferably used.
- it can be used as a pressure-sensitive adhesive sheet or a decorative pressure-sensitive adhesive sheet for protecting a coating film surface exposed to harmful environments including outdoor weather, solvents, dust, fats and oils, and marine environments.
- it is also suitable as a chipping tape for protecting a coating film of an automobile body or the like, and an adhesive sheet or an adhesive sheet for a body protection film.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
本発明の粘着シートは、基材と粘着剤層とを有する粘着シートであり、該基材の薬品重量増加率が60%以下であり、好ましくは50%以下であり、更に好ましくは40%以下であり、特に好ましくは30%以下である。なお、下限値は0であることが理想的であるが、例えば3%以上である。基材の薬品重量増加率が60%以下であれば、粘着シートが有機溶剤等の薬品に曝されても剥がれない傾向にある。
カラム TSKgel GMH-H(S)×2
カラムサイズ 7.8mmI.D.×300mm
溶離液 THF
流量 0.5mL/min
検出器 RI
カラム温度 40℃
注入量 100μL
また、必要に応じて、溶媒を使用して表面保護層用塗布液を形成することができる。用いられる溶媒としては、例えば、トルエン、メチルエチルケトン、ヘキサン、キシレン、酢酸エチルなどが挙げられ、また、2種類以上を併用してもよい。
(1)柔軟性の評価(5%伸長時荷重の測定)
基材の一方の表面に厚さ50μmのアクリル系粘着剤層を形成して粘着テープを作製した。但し、基材層および表面保護層を有する基材の場合には、基材層の上に粘着剤層を形成した。この粘着テープを、幅10mm×長さ160mmに切断し、引張速度200mm/min、チャック間距離100mm、23℃で引張試験を実施し、応力-歪み曲線を求めた。粘着シートの5%伸長時における荷重を求めた。
基材の一方の表面に厚さ50μmのアクリル系粘着剤層を形成して粘着シートを作製した。但し、基材層および表面保護層を有する基材の場合には、基材層の上に粘着剤層を形成した。この粘着シートを、幅10mm×長さ160mmに切断し、引張速度200mm/min、チャック間距離100mm、23℃で、チャック間距離が110mmになるまで引っ張り続けて10%伸ばした状態で停止した。その停止から600秒経過した後の負荷(残留応力)を測定し、下記算出式を用いて応力緩和率を求めた。
耐薬品性の評価として、ガソリン等の燃料の重量増加率を測定した。すなわち、基材を、幅30mm×長さ30mmのサイズに切断して測定サンプルを作製した。レギュラーガソリンとエタノールとを90重量%/10重量%の割合で混合した有機溶剤に、測定サンプルを浸漬し、30分経過した時の重量を測定した。薬品(ex.有機溶剤)の重量増加率は下記算出式を用いて求めた。
基材層として、厚さ240μm、ショア硬度85Aの無黄変アジペートエステル系熱可塑性ポリウレタンフィルムを使用して、基材層のみからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、厚さ240μm、ショア硬度95Aの無黄変カプロラクトンエステル系熱可塑性ポリウレタンフィルムを使用して、基材層のみからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、厚さ150μm、ショア硬度97Aの無黄変カプロラクトンエステル系熱可塑性ポリウレタンフィルムを使用して、基材層のみなからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、厚さ150μm、ショア硬度95Aの無黄変カーボネート系熱可塑性ポリウレタンフィルムを使用して、基材層のみからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、厚さ150μm、ショア硬度97Aの無黄変エーテル系熱可塑性ポリウレタンフィルムを使用して、基材層のみからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、厚さ145μm、ショア硬56Dの無黄変エーテル系熱可塑性ポリウレタンフィルムを使用して、基材層のみからなる基材を作製した。
得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、実施例2で用いた厚み240μm、ショア硬度95Aの無黄変カプロラクトンエステル系熱可塑性ポリウレタンフィルムを使用した。このフィルムの上に、アクリル系樹脂の酢酸エチルによる43%濃度溶液((株)日本触媒製、商品名「ハルスハイブリッドUV-G301」、(メタ)アクリル系ポリマーの水酸基価は45(KOHmg/g))を100部と、イソシアネート系架橋剤(旭化成ケミカルズ(株)製、商品名「デュラネートTSE-100」)を28.07部と、希釈溶媒として酢酸エチルを108.8部添加して得られた表面保護層用の樹脂組成物を、硬化後の厚みが10μmとなるように塗布し、温度120℃で2分間、乾燥および硬化させた。このようにして、基材層の上に表面保護層を形成して基材を作製した。得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、実施例2で用いた厚み240μm、ショア硬度95Aの無黄変カプロラクトンエステル系熱可塑性ポリウレタンフィルムを使用した。このフィルムの上に、アクリル系樹脂の酢酸ブチルによる70%濃度溶液(Nuplex Resins GmbH製、商品名「SETALUX D A 870BA」、(メタ)アクリル系ポリマーの水酸基価は99(KOHmg/g))を100部と、イソシアネート系架橋剤(住化バイエルウレタン(株)製、商品名「スミジュールN3300」)を34.00部と、希釈溶媒として、酢酸エチルとキシレンの混合溶剤(酢酸エチル/キシレン=1/1 wt%)を51.31部添加して得られた表面保護層用の樹脂組成物を、硬化後の厚みが10μmとなるように塗布し、温度120℃で2分間、乾燥および硬化させた。このようにして、基材層の上に表面保護層を形成して基材を作製した。得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
基材層として、実施例2で用いた厚み240μm、ショア硬度95Aの無黄変カプロラクトンエステル系熱可塑性ポリウレタンフィルムを使用した。このフィルムの上に、フルオロエチレン/ビニルエーテル交互共重合体のキシレン及びトルエンによる50%濃度溶液(旭硝子(株)製、商品名「ルミフロンLF600」)を100部と、イソシアネート系架橋剤(日本ポリウレタン(株)製、商品名「コロネートHX」)を9.51部と、希釈溶媒として酢酸エチルを76.46部とを添加して得られた表面保護層用の樹脂組成物を、硬化後の厚みが10μmとなるように塗布し、温度120℃で2分間、乾燥および硬化させた。このようにして、基材層の上に表面保護層を形成して基材を作製した。得られた基材について、5%伸長時荷重の測定、応力緩和率の測定、および、耐薬品性の評価を行った。その結果を表1に記載した。
《粘着剤層の作製》
モノマー成分として、イソノニルアクリレート90部およびアクリル酸10部を混合した混合物に、光重合開始剤として、商品名「イルガキュア 651」(チバ・スペシャリティ・ケミカルズ社製)を0.05部と、商品名「イルガキュア 184」(チバ・スペシャリティ・ケミカルズ社製)を0.05部とを配合した後、粘度が約25Pa・s(BH粘度計No.5ローター、10rpm、測定温度30℃)になるまで紫外線を照射して、一部が重合したアクリル組成物(UVシロップ)を作製した。
次いでセパレータを除去し、実施例1~6の基材を用いて粘着シートを作製した。
すなわち、実施例1~3で得られた基材については、基材の一方の面に、粘着剤層が重なるように貼り合わせて粘着シート(仮支持体1/基材/粘着剤層/仮支持体2の層構成)を作製した。
Claims (9)
- 少なくとも、基材と粘着剤層とを有する粘着シートであって、前記基材は基材層を有し、前記基材の5%伸長時の荷重が15N/cm以下であり、また、前記基材を10%まで伸長させ、その状態で伸張を停止してから600秒経過後の応力緩和率が、40%以上、100%以下であり、かつ、該基材の薬品重量増加率が60%以下であることを特徴とする粘着シート。
- 前記基材の5%伸長時の荷重が1N/cm以上、15N/cm以下であることを特徴とする請求項1に記載の粘着シート。
- 前記基材層が、少なくともウレタン系ポリマーを含有することを特徴とする請求項1から2のいずれか1項に記載の粘着シート。
- 前記基材層を構成するウレタン系ポリマーが、エステル系熱可塑性ポリウレタンであることを特徴とする請求項3に記載の粘着シート。
- 前記基材層のショア硬度は80A以上、65D以下であることを特徴とする請求項1から4のいずれか1項に記載の粘着シート。
- 該基材が表面保護層および基材層を有し、該表面保護層は前記粘着シートの最表面に配置されていることを特徴とする請求項1または5のいずれか1項に記載の粘着シート。
- 前記表面保護層は、アクリル系樹脂、フッ素系樹脂、またはウレタン系ポリマーを有効成分とすることを特徴とする請求項6に記載の粘着シート。
- 前記アクリル系樹脂は、水酸基価20~120(KOHmg/g)の(メタ)アクリル系ポリマーを含有することを特徴とする請求項6に記載の粘着シート。
- 前記粘着シートが、被着体の表面を保護するための保護シートとして使用されることを特徴とする請求項1から8のいずれか1項に記載の粘着シート。
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JP6807195B2 (ja) * | 2016-09-15 | 2021-01-06 | 日東電工株式会社 | 生体貼付用積層体 |
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KR101937566B1 (ko) * | 2017-05-24 | 2019-01-10 | 동우 화인켐 주식회사 | 광학투명점착시트, 이를 제조하기 위한 조성물 및 이를 이용한 표시장치 |
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