WO2015098307A1 - 紫外線硬化型粘着剤組成物、粘着フィルム、及び、粘着フィルムの製造方法 - Google Patents
紫外線硬化型粘着剤組成物、粘着フィルム、及び、粘着フィルムの製造方法 Download PDFInfo
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- WO2015098307A1 WO2015098307A1 PCT/JP2014/079424 JP2014079424W WO2015098307A1 WO 2015098307 A1 WO2015098307 A1 WO 2015098307A1 JP 2014079424 W JP2014079424 W JP 2014079424W WO 2015098307 A1 WO2015098307 A1 WO 2015098307A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
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- 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
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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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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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
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4808—Mixtures of two or more polyetherdiols
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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
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- 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
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—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
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
Definitions
- the present invention relates to an ultraviolet curable pressure-sensitive adhesive composition from which an adhesive film having excellent cutting properties can be obtained.
- UV-curing pressure-sensitive adhesives are not attracting attention in applications such as laminating optical members because they do not require aging time and high productivity can be expected.
- the ultraviolet curable pressure-sensitive adhesive for example, a pressure-sensitive adhesive obtained by using a solventless pressure-sensitive adhesive composition containing urethane acrylate, an acrylic monomer, and a photopolymerization initiator is known (for example, patents). See reference 1.)
- the pressure-sensitive adhesive is excellent in high productivity because it can exhibit pressure-sensitive adhesive properties immediately after UV curing, and it is easy to increase the thickness of the pressure-sensitive adhesive layer compared to conventional pressure-sensitive adhesives. Have the advantage of being able to
- the problem to be solved by the present invention is to provide an ultraviolet curable pressure-sensitive adhesive composition from which an adhesive film having excellent cutting properties can be obtained.
- the present invention relates to a polyol (a1) containing a polycarbonate polyol (a1-1) and a polyether polyol (a1-2), a polyisocyanate (a2), and a (meth) acrylic compound (a3) having an isocyanate group or a hydroxyl group.
- UV curable pressure-sensitive adhesive composition characterized by containing urethane (meth) acrylate (A), photopolymerization initiator (B), and organic solvent (C) obtained by reacting An adhesive film is provided.
- the organic solvent (C) is dried to obtain a UV curable pressure-sensitive adhesive film, and then the pressure-sensitive adhesive of the UV-curable pressure-sensitive adhesive film.
- the present invention provides a method for producing a pressure-sensitive adhesive film obtained by attaching a layer to a substrate and then irradiating it with ultraviolet rays.
- the pressure-sensitive adhesive film obtained from the ultraviolet curable pressure-sensitive adhesive composition of the present invention has no adhesive residue even after being cut and has excellent cutting properties. Moreover, when the said specific manufacturing method is used, the adhesive film which is further excellent in level
- the ultraviolet curable pressure-sensitive adhesive composition of the present invention can be suitably used as a pressure-sensitive adhesive used for optical members, and in particular, touch panels, liquid crystal displays, plasma displays, organic EL, personal computers, mobile phones and the like. It can be suitably used for manufacturing IT-related products.
- the ultraviolet curable pressure-sensitive adhesive composition of the present invention has a polyol (a1) containing a polycarbonate polyol (a1-1) and a polyether polyol (a1-2), a polyisocyanate (a2), and an isocyanate group or a hydroxyl group. It contains urethane (meth) acrylate (A) obtained by reacting (meth) acrylic compound (a3), photopolymerization initiator (B), and organic solvent (C).
- urethane (meth) acrylate (A) obtained by reacting (meth) acrylic compound (a3), photopolymerization initiator (B), and organic solvent (C).
- polycarbonate polyol (a1-1) for example, those obtained by reacting a carbonate ester and / or phosgene with a compound having two or more hydroxyl groups can be used.
- carbonate ester for example, methyl carbonate, dimethyl carbonate, ethyl carbonate, diethyl carbonate, cyclocarbonate, diphenyl carbonate and the like can be used. These carbonates may be used alone or in combination of two or more.
- Examples of the compound having two or more hydroxyl groups include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, and tripropylene glycol.
- An alicyclic polyol such as 1,2-cyclobutanediol, 1,3-cyclopentanediol, 1,4-cyclohexanedimethanol, cycloheptanediol, cyclooctanediol, hydroxypropylcyclohexanol; bisphenol A, Aromatic polyols such as bisphenol F and 4,4′-biphenol can be used. These compounds may be used alone or in combination of two or more.
- an aliphatic polyol and / or an alicyclic polyol is preferably used from the viewpoint that the cutting property can be further improved, and 1,4-butanediol, 1,5-pentane is preferable. It is more preferable to use one or more compounds selected from the group consisting of diol, 1,6-hexanediol, and 1,4-cyclohexanedimethanol.
- the number average molecular weight of the polycarbonate polyol (a1-1) is preferably in the range of 500 to 5,000, more preferably in the range of 600 to 3,000, from the viewpoint of further improving cutting properties and adhesive properties. The range of 700 to 2,000 is more preferable.
- the number average molecular weight of the polycarbonate polyol (a1-1) is a value measured by the gel permeation chromatography (GPC) method under the following conditions.
- Measuring device High-speed GPC device (“HLC-8220GPC” manufactured by Tosoh Corporation) Column: The following columns manufactured by Tosoh Corporation were connected in series. "TSKgel G5000" (7.8 mm ID x 30 cm) x 1 "TSKgel G4000” (7.8 mm ID x 30 cm) x 1 "TSKgel G3000” (7.8 mm ID x 30 cm) x 1 “TSKgel G2000” (7.8 mm ID ⁇ 30 cm) ⁇ 1 detector: RI (differential refractometer) Column temperature: 40 ° C Eluent: Tetrahydrofuran (THF) Flow rate: 1.0 mL / min Injection amount: 100 ⁇ L (tetrahydrofuran solution with a sample concentration of 0.4 mass%) Standard sample: A calibration curve was prepared using the following standard polystyrene.
- the polyether polyol (a1-2) can be obtained by, for example, subjecting one or more alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide, and the like to addition polymerization to the compound having two or more hydroxyl groups.
- Product polytetramethylene glycol obtained by ring-opening polymerization of tetrahydrofuran; modified polytetramethylene glycol obtained by copolymerization of tetrahydrofuran and alkyl-substituted tetrahydrofuran; modified polytetramethylene obtained by copolymerization of neopentyl glycol and tetrahydrofuran Glycol and the like can be used.
- polyether polyols may be used alone or in combination of two or more.
- polyether polyols selected from the group consisting of polyethylene glycol, polypropylene glycol, and polytetramethylene glycol from the viewpoint that the physical properties of the adhesive and the step following ability can be further improved.
- the number average molecular weight of the polyether polyol (a1-2) is preferably in the range of 200 to 5,000 from the viewpoint of further improving the adhesive properties and the step following ability.
- the number average molecular weight of the polyether polyol (a1-2) is a value obtained by measurement in the same manner as the number average molecular weight of the polycarbonate polyol (a1-1).
- the range is preferably 10/90 to 90/10, and more preferably 20/80 to 60/40.
- the polyol (a1) contains the polycarbonate polyol (a1-1) and the polyether polyol (a1-2) as essential components, but may contain other polyols as necessary.
- polyester polyol for example, polyester polyol, polybutadiene polyol, hydrogenated polybutadiene polyol, dimer diol, polyacryl polyol and the like can be used. These polyols may be used alone or in combination of two or more.
- the total content of the polycarbonate polyol (a1-1) and the polyether polyol (a1-2) in the polyol (a1) is 50% by mass in the polyol (a1) in terms of cutting properties and adhesive properties.
- the above is preferable, and 70% by mass or more is more preferable.
- polyisocyanate (a2) examples include aromatic polyisocyanates such as xylylene diisocyanate, phenylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, and naphthalene diisocyanate; hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, 4,4 Aliphatic or alicyclic polyisocyanates such as' -dicyclohexylmethane diisocyanate, diisocyanate methylcyclohexane and tetramethylxylylene diisocyanate can be used.
- polyisocyanates may be used alone or in combination of two or more.
- alicyclic polyisocyanate is preferably used from the viewpoint of further improving cutting properties and adhesive properties, and includes 4,4′-dicyclohexylmethane diisocyanate, isophorone diisocyanate, cyclohexane diisocyanate, and diisocyanate methylcyclohexane. It is more preferable to use one or more polyisocyanates selected from the group.
- the (meth) acrylic compound (a3) having an isocyanate group or a hydroxyl group is used for the purpose of introducing a (meth) acryloyl group into the urethane (meth) acrylate (A).
- Examples of the (meth) acrylic compound having an isocyanate group that can be used as the compound (a3) include 2- (meth) acryloyloxyethyl isocyanate, 2- (2- (meth) acryloyloxyethyloxy) ethyl isocyanate, 1,1-bis ((meth) acryloyloxymethyl) ethyl isocyanate and the like can be used. These compounds may be used alone or in combination of two or more. Among these, 2- (meth) acryloyloxyethyl isocyanate is preferably used from the viewpoint of easy availability of raw materials, and 2-acryloyloxyethyl isocyanate is more preferable from the viewpoint of curability.
- Examples of the (meth) acrylic compound having a hydroxyl group that can be used as the compound (a3) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, (Meth) acrylic acid alkyl ester having a hydroxyl group such as 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, hydroxyethylacrylamide; trimethylolpropane di (meth) Polyfunctional (meth) acrylate having a hydroxyl group such as acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate; polyethylene glycol monoacrylate, And the like can be used polypropylene glycol monoacrylate.
- acrylic acid (meth) alkyl ester having a hydroxyl group from the viewpoint of easy availability of raw materials, curability and adhesive properties, and 2-hydroxyethyl acrylate and 4-hydroxybutyl acrylate are preferably used. Is more preferable.
- urethane (meth) acrylate (A) in the case of using a (meth) acryl compound having an isocyanate group as the compound (a3), for example, the polyol (a1) and the polyisocyanate (in the absence of a solvent) a urethane prepolymer having a hydroxyl group is obtained by charging and reacting with a2), and then the (meth) acrylic compound (a3) having an isocyanate group is supplied, mixed, and reacted to be used. be able to. In any of the above reactions, for example, the reaction may be performed at 20 to 120 ° C. for 30 minutes to 24 hours.
- the said polyol (a1) and the said (meth) under solvent-free for example.
- a method in which an acrylic compound (a3) is charged into a reaction system and then the polyisocyanate (a2) is supplied, mixed, and reacted, or the polyol (a1) and the polyisocyanate are prepared without solvent.
- a urethane prepolymer having an isocyanate group is obtained by reacting with (a2), and then the (meth) acrylic compound (a3) having a hydroxyl group is supplied, mixed, and reacted to be used. Can do.
- the reaction may be performed at 20 to 120 ° C. for 30 minutes to 24 hours.
- the production of the urethane (meth) acrylate (A) may be performed in the presence of an organic solvent (C) described later.
- reaction may be carried out when the equivalent ratio exceeds 1, but in that case, it is preferable to use an alcohol such as methanol for the purpose of deactivating the isocyanate group of the urethane (meth) acrylate (A). .
- the reaction between the polyol (a1), the polyisocyanate (a2) and the (meth) acrylic compound (a3) Equivalent ratio [total amount of isocyanate groups / hydroxyl group] of the hydroxyl groups of (a1) and the total of isocyanate groups of polyisocyanate (a2) and (meth) acrylic compound (a3) is in the range of 0.75 to 1. It is preferred to control the molecular weight of the urethane (meth) acrylate (A) to be obtained, and more preferably in the range of 0.79 to 0.995.
- reaction may be carried out when the equivalent ratio exceeds 1, but in that case, it is preferable to use an alcohol such as methanol for the purpose of deactivating the isocyanate group of the urethane (meth) acrylate (A). .
- urethane (meth) acrylate (A) when producing the urethane (meth) acrylate (A), a polymerization inhibitor, a urethanization catalyst or the like may be used as necessary.
- polymerization inhibitor examples include 3,5-bistertiary butyl-4-hydroxytoluene, hydroquinone, methyl hydroquinone, hydroquinone monomethyl ether (methoquinone), para tertiary butyl catechol methoxyphenol, and 2,6-ditertiary butyl cresol. Phenothiazine, tetramethylthiuram disulfide, diphenylamine, dinitrobenzene and the like can be used. These polymerization inhibitors may be used alone or in combination of two or more.
- the urethanization catalyst examples include nitrogen-containing compounds such as triethylamine, triethylenediamine, and N-methylmorpholine; metal salts such as potassium acetate, zinc stearate, and tin octylate; dibutyltin laurate, zirconium tetraacetylacetonate, and the like. These organometallic compounds can be used. These urethanization catalysts may be used alone or in combination of two or more.
- the urethane (meth) acrylate (A) has a (meth) acryloyl group that allows radical polymerization to proceed by light irradiation or heating.
- the urethane (meth) acrylate (A) has a (meth) acryloyl group equivalent of 1,000 to 50,000 g / eq. From the viewpoint of further improving cutting properties, adhesive physical properties, and step following properties. In the range of 3,000 to 25,000 g / eq. The range of is more preferable.
- the (meth) acryloyl group equivalent is the total mass of the polyol (a1), polyisocyanate (a2) and (meth) acrylic compound (a3) in the urethane (meth) acrylate (A). The value divided by the equivalent of the (meth) acryl group is shown.
- (meth) acrylic compound refers to one or both of a methacrylic compound and an acrylic compound
- (meth) acrylate refers to one or both of methacrylate and acrylate.
- Acryloyl group means one or both of methacryloyl group and acryloyl group
- (meth) acrylic acid means one or both of methacrylic acid and acrylic acid
- (meth) acrylic monomer Means one or both of a methacrylic monomer and an acrylic monomer.
- the mass ratio of the urethane bond in the urethane (meth) acrylate (A) is 4 to 20 in the total amount of the urethane (meth) acrylate (A) from the viewpoint that the cutting property, the adhesive property and the step following property can be further improved. It is preferably in the range of mass%, more preferably in the range of 5 to 15 mass%.
- the urethane bond amount of the said urethane (meth) acrylate (A) occupies in the said raw material with respect to the total mass of the said polyol (a1), the said polyisocyanate (a2), and the said (meth) acrylic compound (a3).
- the mass ratio of the urethane bond structure is shown.
- the weight average molecular weight of the urethane (meth) acrylate (A) is preferably in the range of 5,000 to 100,000 from the viewpoint of further improving the cutting property, the adhesive physical property and the step following property, A range of 000 to 50,000 is more preferable.
- the weight average molecular weight of the urethane (meth) acrylate (A) is a value obtained by measurement in the same manner as the number average molecular weight of the polycarbonate polyol (a1-1).
- the photopolymerization initiator (B) generates radicals by light irradiation, heating, or the like, and initiates radical polymerization of the urethane (meth) acrylate (A).
- Examples of the photopolymerization initiator (B) include 4-phenoxydichloroacetophenone, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, and 1- (4-isopropylphenyl) -2.
- photopolymerization initiator (B) 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2, It is preferable to use one or more photopolymerization initiators selected from the group consisting of 4,6-trimethylbenzoyldiphenylphosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. -Trimethylbenzoyldiphenylphosphine oxide is more preferred.
- the amount of the photopolymerization initiator (B) used is in the range of 0.1 to 20 parts by mass with respect to 100 parts by mass of the urethane (meth) acrylate (A) because the curability can be further improved. It is preferable that the range is 0.2 to 15 parts by mass.
- organic solvent (C) examples include toluene, ethyl acetate, butyl acetate, methyl ethyl ketone, hexane, acetone, cyclohexanone, 3-pentanone, acetonitrile, propionitrile, isobutyronitrile, valeronitrile, dimethyl sulfoxide, dimethylformamide. Etc. can be used. These organic solvents may be used alone or in combination of two or more.
- the amount of the organic solvent (C) used is preferably 60% by mass or less in the ultraviolet curable pressure-sensitive adhesive composition from the viewpoint that the drying property and coating property can be further improved. A range is more preferred.
- the ultraviolet curable adhesive composition of this invention contains the said urethane (meth) acrylate (A), the said photoinitiator (B), and the said organic solvent (C) as an essential component, others are as needed.
- the additive may be contained.
- the other additives include a silane coupling agent, an antioxidant, a light stabilizer, a rust inhibitor, a thixotropic agent, a sensitizer, a polymerization inhibitor, a leveling agent, a tackifier, and an antistatic agent.
- a flame retardant or the like can be used.
- These additives may be used alone or in combination of two or more.
- a silane coupling agent D
- antioxidant E
- a light stabilizer F
- silane coupling agent (D) examples include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, and 3-glycidoxypropyl.
- Silane coupling agents having an epoxy group such as methyldimethoxysilane; 2- (3,4-epoxycyclohexyl) ethyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4 -Epoxycyclohexyl) ethylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethylmethyldiethoxysilane, 2- (3,4-epoxycyclohexyl) propyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) Propylmethyl dimethoxy Silane coupling agents having an alicyclic epoxy group such as silane, 2- (3,4-epoxycyclohexyl) propyltriethoxysilane, 2- (3,4-epoxycyclohexyl) propylmethyldiethoxysilane;
- silane coupling agents may be used alone or in combination of two or more.
- a silane coupling agent having an epoxy group and / or a silane coupling agent having an alicyclic epoxy group from the viewpoint that the adhesive strength after heat and humidity resistance can be further improved.
- the said silane coupling agent (D) As a usage-amount in the case of using the said silane coupling agent (D), it is 0.01 with respect to 100 mass parts of said urethane (meth) acrylate (A) from the point which can improve the adhesive force after moisture-and-heat resistance further.
- the range is preferably from 10 to 10 parts by weight, more preferably from 0.05 to 5 parts by weight, and still more preferably from 0.05 to 1 part by weight.
- antioxidant (E) examples include hindered phenol compounds (primary antioxidants) that capture radicals generated by thermal degradation, phosphorus compounds that decompose peroxides generated by thermal degradation, and sulfur compounds (two Secondary antioxidants) and the like can be used.
- primary antioxidants hindered phenol compounds
- phosphorus compounds that decompose peroxides generated by thermal degradation
- sulfur compounds two Secondary antioxidants
- hindered phenol compound examples include triethylene glycol-bis- [3- (3-tert-butyl-5-methyl-4hydroxyphenyl) propionate], pentaerythritol tetrakis [3- (3,5-di-).
- sulfur compound examples include didodecyl-3,3′-thiopropionate, dilauryl-3,3′-thiodipropionate, lauryl thiodithionate, ditridecyl-3,3′-thiodipropionate, Dimyristyl-3,3′-thiodipropionate, distearyl-3,3′-thiodipropionate, tetrakis-methylene-3-laurylthiopropionate methane, distearyl-3,3′-methyl-3, 3′-thiodipropionate, laurylstearyl-3,3′-thiodipropionate, bis [2-methyl-4- (3-n-alkylthiopropionyloxy) -5-t-butylphenyl] sulfide, ⁇ - Laurylthiopropionate, 2-mercaptobenzimidazole, 2-mercapto-5-methylbenzoy Imidazole, can be used dioct
- one or more antioxidants selected from the group consisting of phosphite and tris (2,4-di-tert-butylphenyl) phosphite, and triphenylphosphine, bis (2,4-diphenyl).
- the amount used when the antioxidant (E) is used is 0.01 to 10 masses per 100 mass parts of the urethane (meth) acrylate (A) from the viewpoint of further improving wet heat yellowing resistance.
- the range of parts is preferred.
- the light stabilizer (F) captures radicals generated by photodegradation, and includes, for example, radical scavengers such as thiol compounds, thioether compounds and hindered amine compounds; ultraviolet absorbers such as benzophenone compounds and benzoate compounds. Can be used. These light stabilizers may be used alone or in combination of two or more. Among these, it is preferable to use a hindered amine compound from the viewpoint that the heat and heat yellowing resistance can be further improved.
- radical scavengers such as thiol compounds, thioether compounds and hindered amine compounds
- ultraviolet absorbers such as benzophenone compounds and benzoate compounds.
- These light stabilizers may be used alone or in combination of two or more. Among these, it is preferable to use a hindered amine compound from the viewpoint that the heat and heat yellowing resistance can be further improved.
- hindered amine compound examples include a reaction product of cyclohexane and N-butyl peroxide 2,2,6,6-tetramethyl-4-piperidineamine-2,4,6-trichloro 1,3,5-triazine.
- the amount used when the light stabilizer (F) is used is 0.01 to 10% by mass with respect to 100 parts by mass of the urethane (meth) acrylate (A) from the viewpoint of further improving heat and heat yellowing resistance.
- the range of parts is preferred.
- the viscosity of the ultraviolet curable pressure-sensitive adhesive composition of the present invention is preferably in the range of 500 to 30,000 mPa ⁇ s, and preferably 1,000 to 20,000 mPa ⁇ s from the viewpoint of coating properties and workability. A range is more preferred.
- the said viscosity shows the value measured with the B-type viscometer at 25 degreeC.
- the adhesive film can be obtained through a step of drying the organic solvent (C) in the ultraviolet curable adhesive composition and a step of curing the composition by irradiating with ultraviolet rays.
- the organic solvent (C) is dried. It is preferable to use a method in which an ultraviolet curable adhesive film is obtained, and then the adhesive layer of the ultraviolet curable adhesive film is attached to a substrate and then irradiated with ultraviolet rays. According to this method, when a substrate having a step such as a printing step is used as a base material to be bonded thereafter to the UV curable adhesive film before UV curing, no gap is left in the step portion. Since the said ultraviolet curable adhesive film can be affixed on, the adhesive film which is excellent in level
- the state after organic solvent drying and before UV curing is referred to as “ultraviolet curing adhesive film”, and the state after UV curing is referred to as “adhesion film”.
- the base material for example, a plastic base material, a flexible print base material, a glass base material, a base material obtained by subjecting these base materials to a mold release treatment, a base material obtained by vapor deposition of ITO (indium tin oxide), or the like is used. Can do.
- the same base material may be used for both surfaces of the adhesion layer, or different base materials may be used.
- plastic substrate examples include acrylic resin, PC (polycarbonate), PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), modified PPE (polyphenylene ether), PET (polyethylene terephthalate), COP (cycloolefin polymer),
- TAC triacetylcellulose
- an antireflection film, an antifouling film, a transparent conductive film constituting a touch panel, or the like can be used.
- Examples of a method of applying the ultraviolet curable pressure-sensitive adhesive composition to the substrate include a method of applying using an applicator, a roll coater, a knife coater, a gravure coater and the like. After the coating, the obtained laminate is put into a dryer or the like and dried at a temperature of 50 to 130 ° C. for 1 to 30 minutes to dry the organic solvent (C). An ultraviolet curable adhesive film is obtained.
- the ultraviolet curable adhesive film preferably has a storage elastic modulus at 60 ° C. of 5 ⁇ 10 4 Pa or less when measured at a frequency of 1 Hz from the viewpoint of further improving the step following ability. A range of 3 to 5 ⁇ 10 4 Pa is more preferable.
- the measuring method of the storage elastic modulus of the said ultraviolet curable adhesive film is described in an Example.
- the storage elastic modulus in 30 degreeC is 5 * 10 ⁇ 4 > Pa or more when measured at a frequency of 1 Hz from the point which can further improve cutting property and level
- both After affixing the obtained ultraviolet curable adhesive film to the substrate, both may be pressure-bonded and subjected to autoclaving as necessary.
- an adhesive film is obtained by irradiating with ultraviolet rays.
- the method of irradiating with ultraviolet rays include known ultraviolet light irradiation devices such as a xenon lamp, a xenon-mercury lamp, a metal halide lamp, a high-pressure mercury lamp, and a low-pressure mercury lamp. The method using is mentioned.
- the irradiation dose of the ultraviolet preferably be 0.05 ⁇ 5J / cm 2, more preferably 0.1 ⁇ 3J / cm 2, particularly preferably in the range of 0.3 ⁇ 1.5J / cm 2 Good.
- the irradiation amount of ultraviolet rays is based on a value measured in a wavelength range of 300 to 390 nm using a UV checker “UVR-N1” manufactured by GS Yuasa Corporation.
- the thickness of the pressure-sensitive adhesive film obtained by the above method is appropriately determined according to the intended use, but is preferably in the range of about 10 to 500 ⁇ m.
- the storage elastic modulus at 30 ° C. of preferably 1 ⁇ is 10 4 Pa or more as measured at a frequency 1 Hz, 1 ⁇ 10 4 ⁇
- the range of 5.0 ⁇ 10 7 Pa is more preferable.
- the measuring method of the storage elastic modulus of the said adhesive film is described in an Example.
- a storage modulus at 100 ° C. of preferably 1 ⁇ is 10 4 Pa or more as measured at a frequency 1 Hz, 1 ⁇ 10 4 A range of ⁇ 5 ⁇ 10 5 Pa is more preferable.
- the measuring method of the storage elastic modulus of the said adhesive film is described in an Example.
- the pressure-sensitive adhesive film obtained using the ultraviolet curable pressure-sensitive adhesive composition of the present invention has no adhesive residue even when cut and has excellent cutting properties. Moreover, when the said specific manufacturing method is used, the adhesive film which is further excellent in level
- the ultraviolet curable pressure-sensitive adhesive composition of the present invention can be suitably used as a pressure-sensitive adhesive used for optical members, and in particular, touch panels, liquid crystal displays, plasma displays, organic EL, personal computers, mobile phones and the like. It can be suitably used for manufacturing IT-related products.
- urethane acrylate (A-1) has an acryloyl group equivalent of 15,000 (rounded to the nearest two significant digits.
- the molecular weight of 2-hydroxyethyl acrylate is 116.1. The same applies hereinafter), weight average The molecular weight was 26,000.
- urethane acrylate (A-2) had an acryloyl group equivalent of 21,000 and a weight average molecular weight of 28,000.
- Example 1 ⁇ Preparation of UV-curable adhesive composition> A reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer was heated to 80 ° C., and 100 parts by mass of the urethane acrylate (A-1) and 67 parts by mass of ethyl acetate were added and stirred until uniform.
- a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer was heated to 80 ° C., and 100 parts by mass of the urethane acrylate (A-1) and 67 parts by mass of ethyl acetate were added and stirred until uniform.
- B-1 2,4,6-trimethylbenzoyldiphenyl-phosphine oxide
- (B-1) 2,4,6-trimethylbenzoyldiphenyl-phosphine oxide
- UV curable adhesive film UV curable pressure-sensitive adhesives obtained in Examples and Comparative Examples so that the film thickness after drying the organic solvent is 100 ⁇ m on the surface of a 50 ⁇ m-thick polyethylene terephthalate film (release PET 50) having a release treatment on the surface.
- the fat composition was applied and dried in an 80 ° C. drier for 5 minutes to obtain an ultraviolet curable adhesive film.
- the ultraviolet curable adhesive film was further bonded to the release PET50. Subsequently, ultraviolet rays were irradiated so that the integrated light amount of the wavelength in the UV-A region was 1 J / cm 2 to obtain a laminate having an adhesive film.
- the obtained laminate was cut with a cutter, and the presence or absence of adhesive residue on the blade of the cutter was visually observed. In addition, when the adhesive residue was not confirmed, it evaluated as "T”, and when the adhesive residue was confirmed, it evaluated as "F".
- the ultraviolet curable adhesive film was bonded to a polyethylene terephthalate film (PET100) having a thickness of 100 ⁇ m to prepare an adhesive film in which PET100 was bonded to one side. What cut
- PET100 polyethylene terephthalate film
- Example 1 which is the adhesive film of the present invention was found to be excellent in cutting performance and step following performance.
- Comparative Example 1 was an embodiment in which no polycarbonate polyol was used, but the cutting property was poor.
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Abstract
Description
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A-500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A-2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A-5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F-1」
東ソー株式会社製「TSKgel 標準ポリスチレン F-2」
東ソー株式会社製「TSKgel 標準ポリスチレン F-4」
東ソー株式会社製「TSKgel 標準ポリスチレン F-10」
東ソー株式会社製「TSKgel 標準ポリスチレン F-20」
東ソー株式会社製「TSKgel 標準ポリスチレン F-40」
東ソー株式会社製「TSKgel 標準ポリスチレン F-80」
東ソー株式会社製「TSKgel 標準ポリスチレン F-128」
東ソー株式会社製「TSKgel 標準ポリスチレン F-288」
東ソー株式会社製「TSKgel 標準ポリスチレン F-550」
<ウレタンアクリレート(A-1)の合成>
攪拌機、還流冷却管、窒素導入管、温度計を備えた反応容器に、ポリプロピレングリコール(数平均分子量;2,000、以下「PPG2000」と略記する。)を46.4質量部、ポリカーボネートポリオール(宇部興産株式会社製「ETERNACOLL UM-90(3/1)」、1,4-ジメタノールシクロヘキサン、1,6-ヘキサンジオール及び炭酸ジメチルを反応させたもの、数平均分子量900、以下「UM-90」と略記する。)を38.1質量部、2-ヒドロキシエチルアクリレート(以下、「HEA」と略記する。)0.8質量部、2,6-ジ-ターシャリーブチル-クレゾールを0.3質量部、p-メトキシフェノール0.05質量部を添加した。反応容器内温度が40℃になるまで昇温した後、イソホロンジイソシアネート(以下、「IPDI」と略記する。)14.7質量部添加した。そこで、ジオクチルスズジネオデカネート0.1質量部添加し、1時間かけて80℃まで昇温した。その後、80℃で12時間ホールドし、全てのイソシアネート基が消失していることを確認後、冷却しウレタンアクリレート(A-1)を得た。得られたウレタンアクリレート(A-1)は、アクリロイル基の当量が15,000(有効数字2桁に四捨五入。2-ヒドロキシエチルアクリレートの分子量は116.1とした。以下、同じ。)、重量平均分子量が26,000であった。
<ウレタンアクリレート(A-2)の合成>
攪拌機、還流冷却管、窒素導入管、温度計を備えた反応容器に、PPG2000を33.7質量部、ポリテトラメチレングリコール(数平均分子量;650、以下「PTMG650」と略記する。)28.1質量部、ポリエチレングリコール(数平均分子量400、以下「PEG400」と略記する。)を16.0質量部、HEAを0.55質量部、2,6-ジ-ターシャリーブチル-クレゾールを0.3質量部、p-メトキシフェノール0.05質量部を添加した。反応容器内温度が40℃になるまで昇温した後、IPDIを22.2質量部添加した。そこで、ジオクチルスズジネオデカネート0.1質量部添加し、1時間かけて80℃まで昇温した。その後、80℃で12時間ホールドし、全てのイソシアネート基が消失していることを確認後、冷却しウレタンアクリレート(A-2)を得た。得られたウレタンアクリレート(A-2)は、アクリロイル基の当量が21,000、重量平均分子量が28,000であった。
<紫外線硬化型粘着剤組成物の調製>
攪拌機、還流冷却管、温度計を備えた反応容器を容器内温度80℃に温め、前記ウレタンアクリレート(A-1)100質量部、酢酸エチル67質量部を入れ均一になるまで撹拌した。その後、室温まで冷却し、撹拌下で2,4,6-トリメチルベンゾイルジフェニル-フォスフィンオキサイド(以下、「(B-1)」と略記する。)を0.5質量部、デカン二酸ビス(2,2,6,6-テトラメチル-1-(オクチルオキシ)-4-ピペリジニル)エステルを0.5質量部、トリフェニルフォスフィン0.5質量部を順次添加し、均一になるまで撹拌した。その後、200メッシュ金網で濾過し、紫外線硬化型粘着剤組成物を得た。
用いるウレタンアクリレート(A-1)をウレタンアクリレート(A-2)に変更した以外は、実施例1と同様にして紫外線硬化型粘着剤組成物を得た。
表面に離型処理された厚さ50μmのポリエチレンテレフタレートフィルム(離型PET50)の表面に、有機溶剤乾燥後の膜厚が100μmとなるように実施例及び比較例で得られた紫外線硬化型粘着剤脂組成物を塗布し、80℃乾燥機中で5分間乾燥させて紫外線硬化型粘着フィルムを得た。
前記紫外線硬化型粘着フィルムを更に離型PET50に貼り合せた。次いで、UV-A領域の波長の積算光量が1J/cm2となるように紫外線照射し、粘着フィルムを有する積層体を得た。得られた積層体を裁断機により裁断し、裁断機の刃への糊残りの有無を目視にて観察した。なお、糊残りが確認されなかった場合は「T」、糊残りが確認された場合は「F」と評価した。
前記紫外線硬化型粘着フィルムを、厚さ100μmのポリエチレンテレフタラートフィルム(PET100)に貼り合せ、片面にPET100が貼り合わされた粘着フィルムを作製した。これを縦50mm、横40mmに裁断したものを試験片とした。これとは別に、PET50から縦40mm、横30mm、幅5mmの枠を裁断した。この厚さ50μmの枠をガラス板上に置き、その上から前記試験片を2kgロール×2往復して、PET100と試験片とで前記厚さ50μmの枠を挟むように貼り付けた。これを、50℃、0.5MPaの条件下で20分間オートフレーブ処理した。その後、ガラス板側からガラス板投下後のUV-A領域の波長の積算光量が1J/cm2となるように紫外線照射し、粘着フィルムを有する積層体を得た。得られた積層体を80℃雰囲気下で24時間放置し、厚さ50μmの枠の内側部分を目視にて観察し、50μmの段差に対する追従性を以下のように評価した。
「A」:段差からの浮きがなく、気泡の混入なし。
「B」:段差からの浮きがないが、気泡の混入が一部確認される。
「C」:気泡の混入が目立つ。
前記紫外線硬化型粘着フィルムの粘着層を遮光下にて厚さ1mmになるまで重ね合わせて試験片とした。得られた試験片の貯蔵弾性率を、JISK7198-1991に準拠して、ARES粘弾性測定装置(ティー・エイ・インスツルメント・ジャパン株式会社製)を用いて、昇温速度2℃/分、測定周波数1Hz、温度範囲;-100~200℃、歪み;0.5%の条件にて測定した。
前記[カッティング性の評価方法]にて得られた粘着フィルムを厚さ1mmになるまで重ね合わせて試験片とした。得られた試験片の貯蔵弾性率を、JISK7198-1991に準拠して、ARES粘弾性測定装置(ティー・エイ・インスツルメント・ジャパン株式会社製)を用いて、昇温速度2℃/分、測定周波数1Hz、温度範囲;-100~200℃、歪み;0.5%の条件にて測定した。
Claims (9)
- ポリカーボネートポリオール(a1-1)及びポリエーテルポリオール(a1-2)を含有するポリオール(a1)、ポリイソシアネート(a2)、及び、イソシアネート基又は水酸基を有する(メタ)アクリル化合物(a3)を反応して得られるウレタン(メタ)アクリレート(A)と光重合開始剤(B)と有機溶剤(C)とを含有することを特徴とする紫外線硬化型粘着剤組成物。
- 前記ポリカーボネートポリオール(a1-1)と前記ポリエーテルポリオール(a1-2)との質量比[(a1-1)/(a1-2)]が、10/90~90/10の範囲である請求項1記載の紫外線硬化型粘着剤組成物。
- 前記ウレタン(メタ)アクリレート(A)の(メタ)アクリロイル基当量が、1,000~50,000g/eq.の範囲である請求項1記載の紫外線硬化型粘着剤組成物。
- 請求項1~3のいずれか1項記載の紫外線硬化型粘着剤組成物を基材に塗工し、乾燥・紫外線照射することにより得られることを特徴とする粘着フィルム。
- 30℃における貯蔵弾性率が、周波数1Hzで測定した場合に、1×104Pa以上である請求項4記載の粘着フィルム。
- 100℃における貯蔵弾性率が、周波数1Hzで測定した場合に1×104Pa以上である請求項4記載の粘着フィルム。
- 請求項1~3のいずれか1項記載の紫外線硬化型粘着剤組成物を基材に塗工した後に、有機溶剤(C)を乾燥して紫外線硬化型粘着フィルムを得、次いで、該紫外線硬化型粘着フィルムの粘着層を基材に貼り付け、その後紫外線照射することにより得られることを特徴とする粘着フィルムの製造方法。
- 前記紫外線硬化型粘着フィルムの粘着層を貼り付ける基材が、段差を有するものである請求項7記載の粘着フィルムの製造方法。
- 前記紫外線硬化型粘着フィルムの60℃における貯蔵弾性率が、周波数1Hzで測定した場合に5×104Pa以下である請求項7記載の粘着フィルムの製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2015528741A JP5822051B1 (ja) | 2013-12-25 | 2014-11-06 | 紫外線硬化型粘着剤組成物、粘着フィルム、及び、粘着フィルムの製造方法 |
KR1020167011290A KR20160067894A (ko) | 2013-12-25 | 2014-11-06 | 자외선 경화형 점착제 조성물, 점착 필름, 및, 점착 필름의 제조 방법 |
CN201480062257.8A CN105722937A (zh) | 2013-12-25 | 2014-11-06 | 紫外线固化型粘合剂组合物、粘合膜及粘合膜的制造方法 |
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WO2016092971A1 (ja) * | 2014-12-09 | 2016-06-16 | Dic株式会社 | 紫外線硬化型粘着剤組成物、紫外線硬化型粘着シートの製造方法、及び積層体の製造方法 |
WO2019221126A1 (ja) | 2018-05-16 | 2019-11-21 | 宇部興産株式会社 | 光硬化性樹脂組成物及びそれを用いた粘接着剤 |
WO2021009565A1 (en) * | 2019-07-17 | 2021-01-21 | Arkema France | (meth)acrylate-functionalized oligomers and methods of preparing and using such oligomers |
CN115362226A (zh) * | 2020-03-31 | 2022-11-18 | 东丽株式会社 | 印刷膜用涂布剂、叠层体及印刷物的制造方法 |
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KR20160067894A (ko) | 2016-06-14 |
CN105722937A (zh) | 2016-06-29 |
JP5822051B1 (ja) | 2015-11-24 |
TW201529779A (zh) | 2015-08-01 |
JPWO2015098307A1 (ja) | 2017-03-23 |
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