WO2006090572A1 - 再剥離型粘着剤組成物、再剥離型粘着剤層、および粘着シート類、ならびに表面保護材 - Google Patents
再剥離型粘着剤組成物、再剥離型粘着剤層、および粘着シート類、ならびに表面保護材 Download PDFInfo
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- WO2006090572A1 WO2006090572A1 PCT/JP2006/301973 JP2006301973W WO2006090572A1 WO 2006090572 A1 WO2006090572 A1 WO 2006090572A1 JP 2006301973 W JP2006301973 W JP 2006301973W WO 2006090572 A1 WO2006090572 A1 WO 2006090572A1
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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
- 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
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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
- 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
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- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
- C08L2666/22—Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1452—Polymer derived only from ethylenically unsaturated monomer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2891—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
Definitions
- Re-peelable pressure-sensitive adhesive composition Re-peelable pressure-sensitive adhesive composition, re-peelable pressure-sensitive adhesive layer, pressure-sensitive adhesive sheets, and surface protective material
- the present invention relates to a re-peelable pressure-sensitive adhesive composition, and more particularly to a re-peelable pressure-sensitive adhesive composition used for a surface protective material for an adherend having a photocatalyst layer.
- the present invention also relates to a re-peelable pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition.
- the present invention relates to a pressure-sensitive adhesive sheet having the pressure-sensitive adhesive layer, and further to a surface protective material using the pressure-sensitive adhesive sheet.
- Antifouling films applied or pasted on the surfaces of these members are, for example, TiO, ZnO
- the surface of the medium is activated and the attached contaminants are decomposed. Furthermore, a self-cleaning effect can be obtained in which this pollutant (or a decomposition product of the pollutant) is easily washed away by rain or the like.
- the photocatalyst layer may be damaged when various members formed with these photocatalysts are stored, transported, processed and applied.
- the photocatalyst layer may be damaged when various members formed with these photocatalysts are stored, transported, processed and applied.
- once damaged there is a time, process and cost loss in the repair process, making repair work on site very difficult. Therefore, in recent years, there has been a demand for a protective material for protecting the photocatalyst layer during the photocatalyst layer forming step, shipping, and storage.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-82304
- An object of the present invention is to provide a re-peelable pressure-sensitive adhesive composition excellent in re-peelability and contact angle recovery for a surface protective material of an adherend having a photocatalyst layer. It is another object of the present invention to provide a re-peelable pressure-sensitive adhesive composition excellent in weather resistance, re-peelability, and contact angle recoverability for a surface protective material of an adherend having a photocatalyst layer. It is another object of the present invention to provide a re-peelable pressure-sensitive adhesive layer comprising the above-mentioned adhesive composition, pressure-sensitive adhesive sheets using the pressure-sensitive adhesive layer, and a surface protective material using the pressure-sensitive adhesive sheets. Means for solving the problem
- the re-peelable pressure-sensitive adhesive composition of the present invention comprises:
- a re-peelable pressure-sensitive adhesive composition used for a surface protective material of an adherend having a photocatalyst layer, and as a monomer unit,
- R represents a hydrogen atom or a methyl group
- R represents an alkyl group having 2 to 14 carbon atoms.
- One or more Atari rate based monomer represented by 50 to 99.9 weight 0/0,
- a surfactant having a molecular weight of 150 to 5000 is contained in an amount of 0.01 to 30 parts by weight.
- the (meth) acrylic polymer having the specific monomer unit composition described above was blended with a specific amount of a surfactant having a molecular weight of 150 to 5000.
- the re-peelable pressure-sensitive adhesive layer using the peelable pressure-sensitive adhesive composition is excellent in re-peelability and contact angle recovery with little increase in adhesion with time on the adherend having the photocatalyst layer.
- the peelability of the pressure-sensitive adhesive sheets can be obtained by adsorbing the surfactant to the surface of the photocatalyst layer.
- the hydrophilicity of the photocatalyst layer contact angle recovery occurs as soon as the adsorbed surfactant is decomposed by the activation of the photocatalyst layer. It is assumed that it is easy.
- the (meth) acrylic polymer in the present invention means an acrylic polymer and a Z or methacrylic polymer.
- (Meth) acrylate refers to acrylate and Z or meta acrylate
- (meth) acrylate monomers refer to acrylate monomers and Z or meta acrylate monomers, and are alkyl (meth) acrylates. Refers to alkyl acrylate and Z or alkyl methacrylate.
- the (meth) acrylic polymer in the present invention is a high molecular weight body mainly composed of a (meth) acrylic acid ester having an alkyl group having 2 to 14 carbon atoms, and the polymer is re-peelable pressure-sensitive adhesive composition.
- a base polymer of a product an adhesive composition having excellent removability is obtained.
- (D) 0.01 to 30 parts by weight of a surfactant having a molecular weight of 150 to 5000 with respect to 100 parts by weight of the (meth) acrylic polymer.
- a surfactant having a molecular weight of 150 to 5000 with respect to 100 parts by weight of the (meth) acrylic polymer.
- the present invention further comprises 0.1 to 6 parts by weight of a weather resistance stabilizer with respect to 100 parts by weight of the (meth) acrylic polymer.
- a weather resistance stabilizer By containing a predetermined amount of such a weather resistance stabilizer, a re-peelable pressure-sensitive adhesive composition excellent in weather resistance, re-peelability, and contact angle recoverability is obtained.
- the weathering stabilizer in the present invention refers to an ultraviolet absorber, a light stabilizer, or an antioxidant, and these compounds may be used alone or as two kinds of weathering stabilizers. The above may be used in combination.
- the change rate y of the adhesive force calculated by the formula (2) is 0.01 to 10.
- the re-peelable pressure-sensitive adhesive composition having the above change rate, it is excellent in weather resistance, re-peelability, and contact angle recoverability for a surface protective material of an adherend having a photocatalyst layer. It will be.
- the re-peelable pressure-sensitive adhesive layer of the present invention is characterized by comprising any of the above-described re-peelable pressure-sensitive adhesive compositions.
- the re-peelable pressure-sensitive adhesive layer of the present invention since it comprises the pressure-sensitive adhesive composition having the above-described effects, the re-peelability for the surface protective material of the adherend having the photocatalyst layer, and the contact angle recoverability Excellent pressure-sensitive adhesive layer.
- a pressure-sensitive adhesive composition containing a predetermined amount of a weather resistance stabilizer is used, the weather resistance, re-peelability, and contact angle recoverability for the surface protective material of the adherend having the photocatalyst layer are improved. It becomes an excellent adhesive layer.
- the pressure-sensitive adhesive tape of the present invention is characterized in that a re-peelable pressure-sensitive adhesive layer comprising any one of the above-described re-peelable pressure-sensitive adhesive compositions is formed on one side or both sides of a support. To do.
- the pressure-sensitive adhesive sheet of the present invention since the pressure-sensitive adhesive layer having the above-described effects is provided, the pressure-sensitive adhesive having excellent removability and contact angle recoverability for the surface protective material of the adherend having the photocatalyst layer. It becomes sheets.
- Adhesive sheets excellent in properties.
- the support is a support that is also a plastic base material formed by concealing treatment.
- a strong support a viscosity containing a predetermined amount of weathering stabilizer
- the weather resistance stabilizer for the surface protective material of the adherend having a photocatalyst layer is more excellent in weather resistance, re-peelability, and contact angle recovery. Even when the pressure-sensitive adhesive composition is not used, it is excellent in weather resistance, removability, and contact angle recoverability for the surface protective material of the adherend having the photocatalyst layer.
- the concealment treatment refers to treatment performed so as to hide from exposure to ultraviolet rays and the like, for example, coloring with a pigment, kneading a weathering stabilizer into a plastic film, and the like. .
- the surface protective material of the present invention is characterized by using one or more of the above-mentioned pressure-sensitive adhesive sheets, and the removability of the adherend having the photocatalyst layer for the surface protective material, and the contact angle recovery. It has an excellent function. Furthermore, when a pressure-sensitive adhesive composition containing a predetermined amount of a weathering stabilizer is used, the weatherability, re-peelability, and contact angle recoverability for the surface protective material of the adherend having the photocatalyst layer are used. It has an excellent function.
- the re-peelable pressure-sensitive adhesive composition of the present invention comprises:
- a re-peelable pressure-sensitive adhesive composition used for a surface protective material of an adherend having a photocatalyst layer, and as a monomer unit,
- R represents a hydrogen atom or a methyl group
- R represents an alkyl group having 2 to 14 carbon atoms.
- One or more Atari rate based monomer represented by 50 to 99.9 weight 0/0,
- a surfactant having a molecular weight of 150 to 5000 is contained in an amount of 0.01 to 30 parts by weight.
- One or more Atari rate based monomer represented by 50 to 99.9 weight 0/0,
- 2 1 2 1 represents a hydrogen atom or a methyl group, and R represents an alkyl group having 2 to 14 carbon atoms.
- One or more acrylate monomers, and (meth) acrylic acid alkyl esters are used.
- the (meth) acrylic acid alkyl ester is not particularly limited as long as it is a (meth) acrylate monomer having an alkyl group having 2 to 14 carbon atoms, but preferably 3 to 13 carbon atoms. ⁇ 12 are more preferred.
- the alkyl group having 5 or more carbon atoms can be used as a straight chain or branched chain, but it is preferable to use a branched chain because of its low glass transition point.
- Examples of the (meth) atalylate monomer having an alkyl group of 2 to 14 carbon atoms represented by the general formula (1) include ethyl (meth) acrylate, propyl (meth) acrylate, n —Butyl (meth) acrylate, isobutyl (meth) acrylate, sec—butyl (meth) acrylate, t-butyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate Relate, t-Butylcyclohexyl (meth) acrylate, Isoamyl (meth) acrylate, 2-Ethyl hexyl (meth) acrylate, n-Pentyl (meth) acrylate, Isopentyl (meth) acrylate, Cyclopentyl (Meta ) Atarylate, n-octyl (meth)
- the (meth) acrylate monomer having an alkyl group having 2 to 14 carbon atoms described above may be used alone or in combination of two or more.
- the total content of the (meth) acrylic polymer monomer is 50% by weight or more, preferably 55-99.9% by weight, with 59-80% by weight. It is more preferable that there is. If it is less than 50% by weight, the initial adhesive strength may be reduced.
- a functional group-containing bull monomer is used as the component (B) in the present invention.
- the functional group-containing bull monomer used in the present invention is used to improve adhesion to a substrate and to improve initial adhesion to an adherend.
- Examples of the functional group-containing bull monomer in the present invention include a carboxyl group-containing monomer, an acid anhydride group-containing monomer, and a hydroxyl group-containing monomer.
- carboxyl group-containing monomer examples include acrylic acid, methacrylic acid, strong ruboxetyl (meth) acrylate, carboxypentyl (meth) acrylate, itaconic acid, maleic acid, fumaric acid, crotonic acid and the like. . Of these, acrylic acid and methacrylic acid are particularly preferably used.
- Examples of the acid anhydride group-containing monomer include maleic anhydride, itaconic anhydride, and the like.
- Examples of the above hydroxyl group-containing monomer include 2-hydroxyethyl (meth) actate, 2-hydroxyhexyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 8 —Hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxy lauryl (meth) acrylate, (4-hydroxymethylcyclohexyl) methyl acrylate, N-methylol (meth) Examples include acrylamide, N-hydroxy (meth) acrylamide, vinyl alcohol, aryl alcohol, 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, and diethylene glycol monovinyl ether.
- the above-mentioned functional group-containing bull monomers may be used alone or as a mixture of two or more, but the total content is (meth) acrylic It should be 0.01 to 10% by weight and 0.5 to 8% by weight in the whole monomer of the polymer. It is more preferably 1 to 5% by weight. If the amount is less than 0.01% by weight, the adhesion to the substrate may be lowered. On the other hand, if it exceeds 10% by weight, the adhesive strength may increase with time.
- a bulle monomer copolymerizable with the components (A) and Z or (B) is used as the component (C) in the present invention.
- the vinyl monomer copolymerizable with the above (A) and Z or (B) is used as needed for the purpose of adjusting the initial adhesive force, the adhesive force with time, and further adjusting the cohesive force.
- Examples of copolymerizable bulle monomers include cohesive force 'heat resistance improving components such as sulfonic acid group-containing monomers, phosphoric acid group-containing monomers, cyano group-containing monomers, bull ester monomers, aromatic bulle monomers, Amide group-containing monomer, amino group-containing monomer, imide group-containing monomer, epoxy group-containing monomer, N-Atallyloylmorpholine, butyl ether monomer, and other components with functional groups that serve as crosslinking points and others
- a (meth) acrylic monomer having an alkyl group ((meth) acrylic acid alkyl ester) or the like can be appropriately used. These monomer compounds may be used alone or in admixture of two or more.
- sulfonic acid group-containing monomer examples include styrene sulfonic acid, aryl sulfonic acid, 2- (meth) acrylamide-2-methylpropane sulfonic acid, (meth) acrylamide propane sulfonic acid, sulfopropyl (meth) atari. Rate, (meth) atalylooxynaphthalenesulfonic acid, and the like.
- Examples of the phosphate group-containing monomer include 2-hydroxyethyl allyloyl phosphate.
- Examples of the cyano group-containing monomer include acrylonitrile and meta-tolyl-tolyl.
- bull ester monomer examples include vinyl acetate and butyl propionate.
- aromatic butyl monomer examples include styrene, chlorostyrene, chloromethylstyrene, OC-methylstyrene, benzyl (meth) acrylate, and the like.
- Examples of the amide group-containing monomer include acrylamide, methacrylamide, and jetyl ( (Meth) acrylamide, N-Buylpyrrolidone, N-Buyl-2-pyrrolidone, N- (Meth) acryloylpyrrolidone, N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N, N-jetylacrylamide N, N-Jetylmethacrylamide, N, N, -methylenebisacrylamide, N, N-dimethylaminopropylacrylamide, N, N-dimethylaminopropylmethacrylamide and the like.
- amino group-containing monomer examples include N, N-dimethylaminoethyl (meth) acrylate, N, N- dimethylaminopropyl (meth) acrylate, N- (meth) atteroyl morpholine, (meta ) Aminoalkyl ester of acrylic acid.
- Examples of the imide group-containing monomer include cyclohexylmaleimide, isopropylmaleimide, N-cyclohexylmaleimide, and itaconimide.
- Examples of the epoxy group-containing monomer include glycidyl (meth) acrylate and aryl glycidyl ether.
- Examples of the butyl ether monomer include methyl butyl ether, ethynyl vinyl ether, and isobutyl vinyl ether.
- Examples of other (meth) acrylic monomers having an alkyl group include methyl (meth) acrylate, isobornyl (meth) acrylate, and silane monomers containing a silicon atom. .
- polymerizable monomers may be used alone or in admixture of two or more, but the total content is a (meth) acrylic polymer. It is preferably 0 to 49.9 parts by weight with respect to 100 parts by weight, more preferably 0 to 44.9 parts by weight. If it exceeds 50% by weight, the initial adhesive strength may be reduced.
- the (meth) acrylic polymer used in the present invention has a weight average molecular weight of 100,000 or more, preferably 300,000 or more, more preferably 500,000 or more.
- the weight average molecular weight is less than 100,000, the durability tends to be poor, and the adhesive composition tends to be left behind due to the reduced cohesive force of the pressure-sensitive adhesive composition.
- the weight average molecular weight is preferably 5 million or less.
- the weight average molecular weight is obtained by GPC (gel “permeation” chromatography).
- the (meth) acrylic polymer The glass transition temperature (Tg) is 0 ° C or lower (usually 100 ° C or higher), preferably 10 ° C or lower. If the glass transition temperature is higher than o ° c, the polymer will flow, and ⁇ wetting on the adherend will be insufficient, and the swelling generated between the adherend and the adhesive composition layer of the adhesive sheet will be reduced. There is a tendency to cause.
- the glass transition temperature of (meth) acrylic polymer (Tg)
- Tg can be adjusted within the above range by appropriately changing the monomer component and composition ratio to be used.
- the (meth) acrylic polymer For the production of the (meth) acrylic polymer, a known radical polymerization method such as solution polymerization, bulk polymerization, and emulsion polymerization can be appropriately selected. Further, the obtained (meth) acrylic polymer may be any of a random copolymer, a block copolymer, a graft copolymer, and the like.
- a polymerization solvent for example, methyl ethyl ketone, acetonitrile, ethyl acetate, tetrahydrofuran, dioxane, cyclohexanone, n-hexane, toluene, xylene, mesitylene, methanol, Ethanol, n-propanol, isopropanol, water, various aqueous solutions are used.
- the reaction is usually performed at about 60 to 80 ° C for about 4 to 10 hours under an inert gas stream such as nitrogen.
- the polymerization initiator, chain transfer agent and the like used for radical polymerization are not particularly limited, and can be appropriately selected and used.
- Examples of the polymerization initiator used in the present invention include 2, 2'-azobisisobutyl thiol, 2, 2, 1-azobis (2-amidinopropane) dihydrochloride, 2, 2, 1-azobis [2- (5-methyl-2-imidazoline-2-yl) propane] dihydrochloride, 2,2,1-azobis (2-methylpropionamidine) disulfate, 2,2, -azobis (N, N Azomono initiators such as 2, 1'-azobis [N- (2-carboxyethyl) 2-methylpropionamidine] no, idlate (VA-057), Persulfates such as potassium persulfate and ammonium persulfate, di (2-ethylhexyl) peroxydicarbonate, di (4 tert-butylenocyclohexenole) peroxydicarbonate, di-s ec butyl peroxydi Carbonate, t Butyl peroxyneodecano
- the polymerization initiator may be used alone or as a mixture of two or more thereof, but the total content is 0.005 to 100 parts by weight of the monomer. It is preferable to be about ⁇ 1 part by weight, more preferably about 0.02-0.5 part by weight.
- a chain transfer agent may be used in the polymerization.
- a chain transfer agent By using a chain transfer agent, the molecular weight of the acrylic polymer can be appropriately adjusted.
- chain transfer agents examples include lauryl mercabtan, glycidyl mercaptan, mercaptoacetic acid, 2-mercaptoethanol, thioglycolic acid, 2-ethylhexyl thiodalcholate, and 2,3 dimercapto 1 propanol. can give.
- chain transfer agents may be used alone or in admixture of two or more, but the total content is 0.01 to 100 parts by weight of monomer. -0. About 1 part by weight.
- the re-peelable pressure-sensitive adhesive composition of the present invention uses the (meth) acrylic polymer as described above as a base polymer.
- a surfactant including an emulsifier having a molecular weight of 150 to 5000 is used.
- the surfactant includes, for example, a carboxylic acid salt, a sulfonate salt, a sulfate ester salt, a phosphate ester salt, etc. , Ether type, ester type ether type, and fatty acid ar-stranol amide type in which a hydrophobic group and a hydrophilic group are bonded by an amide bond, such as amine salt type, quaternary ammonia Salt type.
- polyoxyethylene (hereinafter abbreviated as POE) nouryl ether phosphate, p. .. E. octyl phenyl ether phosphate, polyoxyethylene Alkyl ether, polyoxyethylene alkyl phenyl ether, oxyethylene oxypropylene block polymer, sorbitan fatty acid ester, alkyl sulfate ester, alkyl benzene sulfonate, alkyl sulfosuccinate, alkyl diphenyl ether disulfonate, polyoxyethylene alkyl sulfate , Polyoxyethylene alkyl phosphate esters, sodium lauryl sulfate, ammonium lauryl sulfate, sodium dodecylbenzene sulfonate, ammonium polyoxyethylene alkyl ether sulfate, sodium polyoxyethylene alkyl ether ether sulfate, etc.
- reactive emulsifiers emulsifiers into which radical polymerizable functional groups such as probe groups and aryl ether groups are introduced, specifically, for example, Aqualon HS-10, HS-20, KH- 10, BC-05, BC-10, BC-20 (Daiichi Kogyo Seiyaku Co., Ltd.), Adekaria Soap SE10N (Asahi Den-en). Reactive emulsifiers are preferred because they are incorporated into the polymer chain after polymerization and thus have improved water resistance.
- surfactants may be used alone or in admixture of two or more, but the total content is (meth) acrylic polymer 100 wt.
- the amount is preferably 0.01 to 30 wt.%, More preferably 0.05 to 20 wt.%, And more preferably 0.1 to 10 wt.
- the amount is less than 01% by weight, the recovery of the contact angle may be inferior.
- the amount exceeds 30% by weight, the surface of the adherend may be contaminated.
- phosphate ester surfactants include polyoxyethylene (hereinafter referred to as P.O.
- E. Abbreviated as E.
- norphenyl ether phosphate POE octyl ether ether phosphate, POE dinoyl ether ether phosphate, POE dioctyl ether ether phosphate, polyoxyethylene alkyl phosphate, and the like.
- the acid ester surfactants may be used alone or in combination of two or more.
- these phosphate ester surfactants can be used as a simple substance and in Z or salt form.
- the salt form used include sodium salt, potassium salt, normium salt, triethanolamine salt and the like.
- These phosphate ester surfactants may be used as a single product or as a mixture.
- the method for adding these surfactants is not particularly limited, for example, it may be added during the polymerization operation or may be added to the acrylate polymer after completion of polymerization.
- the re-peelable pressure-sensitive adhesive composition of the present invention is more excellent in weather resistance, heat resistance, and the like by crosslinking the (meth) acrylic polymer using a crosslinking agent.
- a crosslinking agent used in the present invention V a compound having at least two functional groups capable of reacting (bonding) with the functional group of the functional group-containing vinyl monomer is used, and a polyisocyanate ester is used.
- Compounds, epoxy compounds, oxazoline compounds, melamine resins, aziridin derivatives, metal chelate compounds, and the like are used. These compounds may be used alone or in combination.
- polyisocyanate compounds include aromatic isocyanates such as tolylene diisocyanate and xylene diisocyanate, alicyclic isocyanates such as isophorone diisocyanate, and hexamethylene diisocyanate. Examples thereof include aliphatic isocyanates such as sulfonates and emulsified isocyanates.
- examples of the polyisocyanate compound include lower aliphatic polyisocyanates such as butylene diisocyanate and hexamethylene diisocyanate, and cyclopentylene diene.
- Alicyclic isocyanates such as isocyanate, cyclohexylene diisocyanate, isophorone diisocyanate, 2, 4-tolylene diisocyanate, 4, 4, 1-dimethanemethane diisocyanate, xylylene Aromatic diisocyanates such as diisocyanate, trimethylolpropane Z-tolylene diisocyanate trimer adduct (trade name Coronate L, manufactured by Polyurethane Industry Co., Ltd.), trimethylolpropane / hexamethylene diisocyanate Cyanate trimer adduct (trade name Coronate HL, manufactured by Nippon Polyurethane Industry Co., Ltd.), hexamethylene diisocyanate Isocyan
- Examples of the oxazoline compound include 2-oxazoline, 3-oxazoline, 4-oxazoline, 5-keto-1-oxazoline, Epocros (manufactured by Nippon Shokubai Co., Ltd.), and the like. These compounds may be used alone or in combination.
- Examples of the epoxy compound include N, N, ⁇ ', N'-tetraglycidyl m-xylendiamine (trade name: TETRAD-X, manufactured by Mitsubishi Gas Chemical Company) and 1,3-bis (N, N —Diglycidylaminomethyl) cyclohexane (trade name: TETRAD—C, manufactured by Mitsubishi Gas Chemical Co., Inc.) Examples thereof include glycidylamine compounds. These compounds may be used alone or in combination.
- Examples of the melamine-based rosin include hexamethylol melamine and water-soluble melamine-based rosin.
- aziridine derivatives examples include commercially available products under the trade name HDU “Kyokuyaku Enseki”, trade names TAZM “Kyokuyaku Kogyo”, and trade names TAZO “Yakuyaku Kogyo”. These compounds may be used alone or in combination.
- Examples of the metal chelate compound include aluminum, iron, tin, titanium, and nickel as the metal component, and acetylene, methyl acetoacetate, and ethyl lactate as the chelate component. These compounds may be used alone or in combination.
- the amount of these cross-linking agents to be used is appropriately selected depending on the balance with the (meth) acrylic polymer to be cross-linked, and further depending on the intended use as the pressure-sensitive adhesive sheet.
- it is generally 1-10 parts by weight per 100 parts by weight of the (meth) acrylic polymer. It is more preferable that 2 to 8 parts by weight is contained.
- the content is less than 1 part by weight, the crosslinking formation by the crosslinking agent is insufficient, the solvent insoluble content tends to decrease, and the cohesive force of the pressure-sensitive adhesive composition is reduced, which may cause adhesive residue. Tend to be.
- the pressure-sensitive adhesive composition of the present invention uses 0.1 to 6 parts by weight of a weathering stabilizer with respect to 100 parts by weight of the (meth) acrylic polymer, so that weatherability, removability, and contact Excellent in corner recovery.
- the weathering stabilizer is preferably used in an amount of 0.2 to 5 parts by weight, more preferably 0.3 to 4 parts by weight, and still more preferably 0.4 to 3 parts by weight.
- the weather resistance stabilizer in the present invention refers to an ultraviolet absorber, a light stabilizer, or an antioxidant, and these compounds may be used alone as a weather resistance stabilizer, or a mixture of two or more thereof. You may use together.
- the ultraviolet absorber for example, a known ultraviolet absorber such as a benzotriazole ultraviolet absorber, a triazine ultraviolet absorber, or a benzophenone ultraviolet absorber can be appropriately used. These ultraviolet absorbers may be used alone or in combination of two or more.
- light stabilizer for example, known light stabilizers such as hindered amine light stabilizers and benzoate light stabilizers can be appropriately used. These light stabilizers may be used alone or in admixture of two or more.
- anti-oxidation agent examples include known anti-oxidation agents such as a hindered phenolic anti-oxidation agent, a phosphorus-based processing heat stabilizer, a rataton-based processing heat stabilizer, and a xio heat-resistant stabilizer. Can be used as appropriate. These antioxidants may be used alone or in combination of two or more.
- the re-peelable pressure-sensitive adhesive composition of the present invention may contain other known additives, such as powders such as colorants and pigments, dyes, surfactants, and plasticizers.
- Adhesive agents, surface lubricants, leveling agents, softeners, inorganic or organic fillers, metal powders, particles, foils, etc. can be added as appropriate according to the intended use.
- a usage amount usually used in the field of surface protective materials can be used as the blending amount of these optional components.
- the measurement of the initial adhesive strength is performed, for example, as follows.
- the prepared adhesive tape (10 mm X 100 mm) is attached to a photocatalyst-coated glass and pressed to produce a sample for evaluation (a).
- the adhesive strength (NZlOmm) of the sample for evaluation (a) when the adhesive tape is peeled off at a tensile speed of 300 mmZ and a peeling angle of 180 ° is measured with a universal tensile testing machine. This value is the initial adhesive strength.
- the produced adhesive tape (10 mm X 100 mm) is attached to a photocatalyst-coated glass and pressed to obtain an evaluation sample (c).
- the re-peelable pressure-sensitive adhesive composition of the present invention has the above-described configuration.
- the re-peelable pressure-sensitive adhesive layer of the present invention comprises the above-described re-peelable pressure-sensitive adhesive composition.
- the re-peelable pressure-sensitive adhesive layer of the present invention can also be formed from a cross-linkage of the re-peelable pressure-sensitive adhesive composition.
- the pressure-sensitive adhesive composition is generally crosslinked after application of the pressure-sensitive adhesive composition, but a re-peelable pressure-sensitive adhesive layer comprising the crosslinked pressure-sensitive adhesive composition is used as a support. It is also possible to transfer.
- a re-peelable pressure-sensitive adhesive layer is formed on a support (or separator, support film, etc.)
- the method is not particularly limited.
- the pressure-sensitive adhesive composition is applied to a release-treated separator and the like, and the polymerization solvent is dried and removed to form a pressure-sensitive adhesive layer on the support, or on the support.
- the pressure-sensitive adhesive composition is applied, and the polymerization solvent and the like are removed by drying to form a pressure-sensitive adhesive layer on a support. Thereafter, curing (aging treatment) may be performed for the purpose of adjusting the component transfer of the pressure-sensitive adhesive layer or the crosslinking reaction.
- the pressure-sensitive adhesive composition when coated on a support (or separator, support film, etc.) to produce pressure-sensitive adhesive sheets, it can be applied uniformly on the support (or separator, support film, etc.)
- One or more solvents (solvents) other than the polymerization solvent may be newly added to the composition.
- Solvents used in the present invention include, for example, methyl ethyl ketone, acetone, ethyl acetate, tetrahydrofuran, dioxane, cyclohexanone, n-hexane, toluene, xylene, mesitylene, methanol, ethanol, n- Examples include propanol, isopropanol, water, and various aqueous solutions. These solvents may be used alone or in admixture of two or more.
- a known method used for the production of pressure-sensitive adhesive sheets is used. Specifically, for example, roll coat, kiss roll coat, gravure coat, linole scour coat, rhono rebrush, spray coat, dip coat coat, bar coat, knife coat, air knife coat, die coater extrusion method, etc. Method.
- the surface of the pressure-sensitive adhesive layer may be subjected to surface treatment such as corona treatment, plasma treatment, or ultraviolet treatment! /.
- the thickness of the re-peelable pressure-sensitive adhesive layer after drying is 2 to 500 m.
- the pressure-sensitive adhesive layer may be protected with a sheet (release sheet, separator, release liner) that has been subjected to a release treatment until practical use.
- Constituent materials of the separator include, for example, plastic films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films, porous materials such as paper, cloth, and nonwoven fabric, nets, and foam sheets. , Metal foil, and in addition, suitable thin leaf bodies such as these laminates can be used, but a plastic film is also preferably used because of its excellent point smoothness.
- the film is not particularly limited as long as it can protect the pressure-sensitive adhesive layer.
- a polyethylene film, a polypropylene film, a polybutene film, a polybutadiene film, a polymethylpentene film, a polychlorinated bure film examples thereof include a vinyl chloride copolymer film, a polyethylene terephthalate film, a polybutylene terephthalate film, a polyurethane film, and an ethylene acetate butyl copolymer film.
- the thickness of the separator is usually 5 to 200 ⁇ m, preferably 5 to about LOO ⁇ m.
- the separator if necessary, release and antifouling treatment with a silicone, fluorine, long chain alkyl or fatty acid amide release agent, silica powder, etc., coating type, kneading
- An antistatic treatment such as a built-in type or a vapor deposition type can also be performed.
- a release treatment such as silicone treatment, long-chain alkyl treatment, or fluorine treatment, the peelability of the pressure-sensitive adhesive layer can be further enhanced.
- the sheet (release sheet, separator, release liner) subjected to the release treatment can be used as it is as a separator for pressure-sensitive adhesive sheets. it can.
- the re-peelable pressure-sensitive adhesive layer of the present invention has the above-described configuration.
- the pressure-sensitive adhesive sheets of the present invention are formed by forming a re-peelable pressure-sensitive adhesive layer having the above-described structure on one side or both sides of a support.
- the sheet means a planar material and usually includes what is called a tape or a film.
- Examples of the support used in the present invention include plastic films such as polyethylene film and polyester film, and porous materials such as paper and nonwoven fabric.
- the support for example, one or more of low-density polyethylene, high-density polyethylene, linear low-density polyethylene having ⁇ -olefin component power, and the like are used.
- the content of polyethylene-based resin in the support (resin layer) is preferably 30% by weight or more, more preferably 50% by weight, and still more preferably 70% by weight. If the content of polyethylene-based resin is less than 30% by weight, the anchoring force with the adherend etc. will decrease, and adhesive residue will occur when the adhesive strength becomes strong or the adhesive strength increases over time It becomes easy to do. Further, the resin layer (support) may be formed by stretching the resin or non-stretched.
- the support is preferably a support made of a plastic substrate formed by concealing treatment.
- concealment treatment of the present invention include coloring with a pigment filler and kneading of a weather stabilizer.
- Coloring with the above pigment filler, and kneading of a weather resistance stabilizer (ultraviolet absorber, light stabilizer, acid pickling agent) into a plastic film are applied to the surface of the base material, or This is done by coating by transfer treatment, kneading, etc.
- a weather resistance stabilizer ultraviolet absorber, light stabilizer, acid pickling agent
- the ultraviolet absorber for example, a known ultraviolet absorber such as a benzotriazole-based ultraviolet absorber, a triazine-based ultraviolet absorber, or a benzophenone-based ultraviolet absorber can be appropriately used. These ultraviolet absorbers may be used alone or in combination of two or more.
- the amount of the ultraviolet absorber to be added is preferably 5 parts by weight or less, more preferably 3 parts by weight or less, and still more preferably 0.1 to 1 part with respect to 100 parts by weight of the base polymer of each resin layer. About parts by weight.
- the light stabilizer for example, a known light stabilizer such as a hindered amine light stabilizer or a benzoate light stabilizer can be appropriately used. These light stabilizers may be used alone or in admixture of two or more.
- the amount of the light stabilizer added is 5 folds with respect to 100 parts by weight of the base polymer of each resin layer
- the amount is preferably 3 parts by weight or less, more preferably about 0.1 to 1 part by weight.
- anti-oxidation agent examples include known anti-oxidation agents such as a hindered phenolic anti-oxidation agent, a phosphorus processing heat stabilizer, a rataton processing heat stabilizer, and a xio heat resistance stabilizer. Can be used as appropriate. These antioxidants may be used alone or in combination of two or more.
- the amount of the antioxidant to be added is preferably 5 parts by weight or less, more preferably 3 parts by weight or less, and still more preferably 0.1 to 0 parts per 100 parts by weight of the base polymer of each resin layer. . About 5 parts by weight.
- the concealing treatment a method of laminating a concealing film on the inside of the film and Z or the outermost layer may be used! ⁇ .
- the concealment treatment a method of imparting concealability by incorporating a filler, pigment or the like into the plastic substrate may be used.
- Examples of the filler include inorganic fillers.
- inorganic fillers For example, carbon black, acid titanium, acid zinc, and the like can be appropriately used. These inorganic fillers may be used alone or in combination of two or more.
- the amount of the filler added is preferably 20 to 20 parts by weight, more preferably 5 to 15 parts by weight, with respect to 100 parts by weight of the base polymer of each resin layer. The degree.
- the transmittance at a wavelength of 365 nm is preferably 5% or less, particularly preferably 1% or less.
- a resin layer having a multilayer structure can be used as a support.
- the outermost layer of the resin layer having a multilayer structure for example, low-density polyethylene, Polyethylene resin layer, propylene polymer (single system, block system, random system), rubber component and reactor using one or more of high-density polyethylene, linear low-density polyethylene composed of ⁇ -olefin component, etc.
- the content of polyethylene-based resin in the outermost layer is preferably 30% by weight or more, more preferably 50% by weight, and still more preferably 70% by weight. If the content of polyethylene resin is less than 30% by weight, the anchoring force with other layers will decrease, and adhesive residue will easily occur when the adhesive strength is increased or when the adhesive strength increases with time. Become.
- the outermost layer may be obtained by stretching rosin or non-stretched.
- examples of the intermediate layer of the resin layer having a multilayer structure include a thermoplastic resin using a polyolefin-based resin as a base polymer.
- olefins such as propylene polymers (single systems, block systems with random ethylene component, random systems, etc.), ethylene polymers (low density, high density, linear low density, etc.), ethylene ' ⁇ -olefin copolymers, etc.
- Resin layer using one or more of ethylene-based polymer, ethylene 'butyl acetate copolymer, ethylene' methyl methacrylate copolymer and other monomers and other monomers and linear low density polyethylene are preferable from the viewpoints of film formation stability, flexibility of the resin layer (base material layer), and adhesion to the outermost layer and other layers.
- the content of the polyethylene-based resin in the intermediate layer is preferably 30% by weight or more, more preferably 50% by weight, and still more preferably 70% by weight. If the content of polyethylene resin is less than 30% by weight, the anchoring force with the outermost layer and other layers will decrease, and the adhesive residue will remain when the adhesive strength increases or the adhesive strength increases with time. It tends to occur and float easily when used outdoors.
- the intermediate layer may be obtained by stretching rosin or non-stretched. These intermediate layers may be used alone or in combination of two or more.
- the thickness of the resin layer (support) is 5 to 300 m, particularly 20 to: LOO m is generally used.
- the surface of the support (resin layer) is subjected to a surface treatment such as corona treatment, plasma treatment, or ultraviolet treatment in order to improve adhesion to the back surface treatment agent, adhesive, primer, etc. It may be any. Moreover, you may perform a back surface process to a support body (resin layer).
- a surface treatment such as corona treatment, plasma treatment, or ultraviolet treatment
- an anti-blocking agent, a lubricant, titanium oxide, organic and inorganic pigments for coloring purposes, and prevention of deterioration, etc. may be used as necessary.
- an optional additive such as an antioxidant, an ultraviolet absorber, a light stabilizer or an antistatic agent can be blended.
- the support when used for a surface protective film, is preferably a resin film having heat resistance and solvent resistance as well as flexibility.
- the pressure-sensitive adhesive composition can be applied by a roll coater or the like, and can be wound into a roll.
- the support may be provided with a release agent such as a silicone, fluorine, long chain alkyl or fatty acid amide release agent, silica powder or the like as necessary.
- a release agent such as a silicone, fluorine, long chain alkyl or fatty acid amide release agent, silica powder or the like as necessary.
- Antistatic treatment such as treatment, acid treatment, alkali treatment, primer treatment, coating type, kneading type, vapor deposition type can be performed.
- the surface protective material means a material that protects a member having a photocatalyst layer indoors and outdoors by using one or more of the above-mentioned pressure-sensitive adhesive sheets.
- Examples include catalyst-coated glass, highway soundproof walls, and outer-layer panels for buildings and houses.
- the present invention provides a re-peelable pressure-sensitive adhesive composition having excellent weather resistance, re-peelability, and contact angle recoverability for a surface protective material of an adherend having a photocatalyst layer by having the above-described configuration. It becomes a thing.
- a re-peelable pressure-sensitive adhesive layer made of the above-mentioned pressure-sensitive adhesive composition it can be easily peeled off with little increase in adhesive strength with time with respect to the photocatalyst layer, and after use. It becomes pressure-sensitive adhesive sheets having excellent contact angle recoverability, and a surface protective material.
- the prepared adhesive tape (lOmm x 100mm) is affixed to photocatalyst-coated glass (Nippon Sheet Glass Co., Ltd., Cleartect), and it is crimped by reciprocating a 2kg roller, and in an environment of 23 ° CX 50% RH.
- the sample for evaluation (a) was obtained by leaving it for a minute.
- the adhesive strength (NZlOmm) of the above sample for evaluation (a) when the adhesive tape was peeled off at a tensile speed of 300 mmZ and a peeling angle of 180 ° was measured with a universal tensile testing machine. The measurement was performed in an environment of 23 ° CX 65% RH.
- the sample for evaluation (a) was visually observed and evaluated for the state of the photocatalyst-coated glass surface after the adhesive tape was peeled off at a tensile speed of 300 mmZ and a peeling angle of 180 ° with a universal tensile testing machine.
- the evaluation criteria are as follows.
- the prepared adhesive tape (lOmm x 100mm) is affixed to photocatalyst-coated glass (Nippon Sheet Glass Co., Ltd., Cleartect), and it is crimped by reciprocating a 2kg roller, and in an environment of 23 ° CX 50% RH.
- the sample for evaluation (b) was obtained by leaving it for a minute.
- the prepared adhesive tape (lOmm x 100mm) is affixed to photocatalyst-coated glass (Nippon Sheet Glass Co., Ltd., Cleartect), and it is crimped by reciprocating a 2kg roller, and in an environment of 23 ° CX 50% RH.
- the sample for evaluation (c) was obtained by leaving it for a minute.
- the prepared adhesive tape (lOmm x 100mm) was attached to the photocatalyst-coated glass (manufactured by Nippon Sheet Glass Co., Ltd., Cleartect) by hand, and left in an environment of 23 ° CX 50% RH for 3 days. )
- the initial contact angle with water was determined as the contact angle. It was measured with a measuring machine (manufactured by Kyowa Interface Science Co., Ltd., automatic contact angle meter 8-2 2! 1! 1 distilled water was dropped, and the contact angle 0.1 seconds later was measured). The measurement was performed in an environment of 23 ° C X 50% RH.
- the protective material (adhesive tape) of the sample for evaluation (d) above was peeled off, and a black light fluorescent lamp (manufactured by Matsushita Electric Works, Inc., a black light fluorescent lamp that emits light with a peak wavelength of 352 nm and a half-value width of 40 nm, Irradiation was performed for 24 hours using a tube type 20W).
- a black light fluorescent lamp manufactured by Matsushita Electric Works, Inc., a black light fluorescent lamp that emits light with a peak wavelength of 352 nm and a half-value width of 40 nm, Irradiation was performed for 24 hours using a tube type 20W.
- the surface of the test piece is equipped with a UV illuminometer (Topcon, UVR-2 (light receiving unit UD-36), and a receiver with a peak sensitivity wavelength of about 360 nm so that the UV intensity is lmWZcm 2.
- the positional relationship between the test piece and the black light
- the protective material (adhesive tape) of the sample for evaluation (d) was peeled off and left in an environment of 23 ° CX 50% RH for 30 minutes, and then the initial contact angle with water was determined as the contact angle. It was measured with a measuring machine (manufactured by Kyowa Interface Chemical Co., Ltd., distilled water of automatic contact angle meter 8-2 111 was dropped, and the contact angle 0.1 seconds later was measured). The measurement was performed in an environment of 23 ° C X 50% RH.
- R an alkyl group containing an ammonium group
- AO ethylene oxide
- M a group consisting of benzyl alcohol, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, benzyl ether, AO: ethylene oxide, M:
- R an alkyl group containing an ammonium group
- AO ethylene oxide
- M a compound having an ammonium group
- R an alkyl group containing an ammonium group
- AO ethylene oxide
- M Ammonium salt
- n 20. ;
- Acrylic polymer (F) In a reaction vessel equipped with a stirring blade, thermometer, nitrogen gas inlet tube, and cooler, 85 parts by weight of butyl ateryl HBA, 2.5 parts by weight of acrylic acid (AA), 15 parts by weight of acrylonitrile (AN), polymerization initiator As a solution, 0.1 part by weight of azobisisopetite-tolyl and 240 parts by weight of toluene were introduced, nitrogen gas was introduced with gentle stirring, and the atmosphere was replaced with nitrogen. Then, the liquid temperature in the flask was kept at around 50 ° C for 24 hours. A polymerization reaction was performed to prepare an acrylic polymer (F) solution (solid content: 30% by weight).
- Surfactant having the structure shown in chemical formula 5 (molecular weight 479) and surfactant having the structure shown in chemical formula 6 (parts per 100 parts by weight of the solid content of the acrylic polymer (A) solution) 857) 0.3 parts by weight, hindered amine light stabilizer having tertiary amine structure (manufactured by Ciba 'Specialty' Chemicals, TINUVIN765, 1, 2, 2, 6, 6-pentamethyl-4-piperidinyl Sebacate and methyl-1, 2, 2, 6, 6—pentamethyl-4-piperidinyl sebacate mixture) 1 part by weight, TINUVIN213 (manufactured by Chinoku 'Specialty' Chemicals, Methyl-3— (3— (2H—benzotriazole) —2—yl) — 5— tert-butyl-4-hydroxyphenol) propionate Z Polyethylene glycol 300 reactive organism) 0.5 parts by weight, water-soluble crosslinking agent containing oxazoline group as
- Surfactant having the structure shown in Chemical formula 7 (molecular weight 444) 0.3 parts by weight, water-soluble crosslinking agent containing oxazoline group as crosslinking agent (100 parts by weight of the solid content of the acrylic polymer (B) solution (Japan) WS-500, catalyst company, WS-500, oxazoline group equivalent: 220 g ⁇ solid / eq.) 2 parts by weight were added and uniformly mixed and stirred to prepare an acrylic pressure-sensitive adhesive solution (2).
- oxazoline group-containing water-soluble crosslinking agent manufactured by Nippon Shokubai Co., Ltd., WS-500, oxazoline group equivalent: 220 g'solidZeq.
- Surfactant having a structure represented by Chemical Formula 10 (molecular weight 479) and surfactant having a structure represented by Chemical Formula 11 (molecular weight 857) based on 100 parts by weight of the solid content of the acrylic polymer (D) solution.
- 0.3 parts by weight, water-soluble cross-linking agent containing oxazoline group as a cross-linking agent (manufactured by Nippon Shokubai Co., Ltd., WS-500, oxazoline group equivalent: 220 g'solidZeq.) Add 4 parts by weight and mix and stir uniformly.
- An adhesive solution (4) was prepared.
- an epoxy-based crosslinking agent manufactured by Mitsubishi Gas Chemical Company, Inc., 6 parts by weight of tetraglycidyl-1,3-bisaminomethylcyclohexane
- tetraglycidyl-1,3-bisaminomethylcyclohexane 6 parts by weight of tetraglycidyl-1,3-bisaminomethylcyclohexane
- DOP dioctyl phthalate
- epoxy crosslinking agent manufactured by Mitsubishi Gas Chemical Company, Tetraglycidyl-1
- the acrylic adhesive solution (6) is applied to the non-corona-treated surface of a bull chloride film (thickness: 70 m) treated with corona on one side, while the silicone-based back treatment agent is applied to the corona-treated surface. Heated at 80 ° C for 3 minutes to form a 10 m thick adhesive layer after drying
- the pressure-sensitive adhesive layer was bonded to the surface of the silicone-based back treatment agent to prepare a pressure-sensitive adhesive sheet.
- the pressure-sensitive adhesive sheets of the present invention are excellent in weather resistance, re-peelability, and contact angle recoverability for the surface protective material of an adherend having a photocatalyst layer. .
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020077021787A KR101131346B1 (ko) | 2005-02-23 | 2006-02-06 | 재박리형 점착제 조성물, 재박리형 점착제층 및 점착시트류, 및 표면 보호재 |
DE602006006291T DE602006006291D1 (de) | 2005-02-23 | 2006-02-06 | Abziehbare haftzusammensetzung, abziehbare haftschicht, haftfolie und oberflächenschutzmaterial |
CN2006800034069A CN101111583B (zh) | 2005-02-23 | 2006-02-06 | 再剥离型粘合剂组合物、再剥离型粘合剂层和粘合片材以及表面保护材料 |
US11/816,900 US7968189B2 (en) | 2005-02-23 | 2006-02-06 | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
EP06713116A EP1852484B1 (en) | 2005-02-23 | 2006-02-06 | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
Applications Claiming Priority (2)
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JP2005047371A JP5036970B2 (ja) | 2005-02-23 | 2005-02-23 | 再剥離型粘着剤組成物、再剥離型粘着剤層、および粘着シート類、ならびに表面保護材 |
JP2005-047371 | 2005-02-23 |
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WO2006090572A1 true WO2006090572A1 (ja) | 2006-08-31 |
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PCT/JP2006/301973 WO2006090572A1 (ja) | 2005-02-23 | 2006-02-06 | 再剥離型粘着剤組成物、再剥離型粘着剤層、および粘着シート類、ならびに表面保護材 |
Country Status (7)
Country | Link |
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US (1) | US7968189B2 (ja) |
EP (1) | EP1852484B1 (ja) |
JP (1) | JP5036970B2 (ja) |
KR (1) | KR101131346B1 (ja) |
CN (1) | CN101111583B (ja) |
DE (1) | DE602006006291D1 (ja) |
WO (1) | WO2006090572A1 (ja) |
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CN101418198B (zh) * | 2007-10-22 | 2011-04-20 | 日东电工株式会社 | 光学薄膜用粘合剂组合物、光学薄膜用粘合剂层、其制造方法以及粘合型光学薄膜和图像显示装置 |
US20120064318A1 (en) * | 2009-04-24 | 2012-03-15 | Tesa Se | Transparent barrier laminates |
CN106283919A (zh) * | 2016-08-31 | 2017-01-04 | 广东联枫新材料科技有限公司 | 一种制造淋膜纸的方法 |
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KR100995510B1 (ko) * | 2007-01-16 | 2010-11-19 | 주식회사 엘지화학 | 가소제를 포함하는 아크릴계 점착제 조성물 |
US8962135B2 (en) | 2007-10-22 | 2015-02-24 | Nitto Denko Corporation | Pressure-sensitive adhesive composition for optical film, pressure-sensitive adhesive layer for optical film, production method thereof, pressure-sensitive adhesive optical film and image display |
EP2072552A3 (en) * | 2007-12-20 | 2009-07-29 | Nitto Denko Corporation | Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display |
JP5379409B2 (ja) * | 2008-02-15 | 2013-12-25 | 日東電工株式会社 | 光学フィルム用粘着剤組成物、粘着型光学フィルムおよび画像表示装置 |
JP5379410B2 (ja) | 2008-03-14 | 2013-12-25 | 日東電工株式会社 | 光学フィルム用粘着剤組成物、粘着型光学フィルムおよび画像表示装置 |
JP4524320B2 (ja) * | 2008-08-11 | 2010-08-18 | 日東電工株式会社 | 粘着剤組成物、粘着剤層、および粘着剤シート |
TWI414575B (zh) * | 2009-02-25 | 2013-11-11 | Symbio Inc | 一種耐水白化及可移除之乳化型感壓黏著劑 |
DE102009030866B4 (de) * | 2009-06-26 | 2011-06-01 | Pierburg Gmbh | Abgasrohr für eine Verbrennungskraftmaschine |
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US10583630B2 (en) * | 2017-12-28 | 2020-03-10 | Nitto Denko Corporation | Method for producing glass unit, pressure-sensitive adhesive sheet, and use of corrosion inhibitor |
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Also Published As
Publication number | Publication date |
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JP2006232923A (ja) | 2006-09-07 |
EP1852484A4 (en) | 2008-03-05 |
KR101131346B1 (ko) | 2012-04-04 |
EP1852484A1 (en) | 2007-11-07 |
US7968189B2 (en) | 2011-06-28 |
KR20070110381A (ko) | 2007-11-16 |
DE602006006291D1 (de) | 2009-05-28 |
CN101111583A (zh) | 2008-01-23 |
CN101111583B (zh) | 2010-08-04 |
JP5036970B2 (ja) | 2012-09-26 |
EP1852484B1 (en) | 2009-04-15 |
US20090022925A1 (en) | 2009-01-22 |
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