WO2012046810A1 - 樹脂組成物 - Google Patents
樹脂組成物 Download PDFInfo
- Publication number
- WO2012046810A1 WO2012046810A1 PCT/JP2011/073113 JP2011073113W WO2012046810A1 WO 2012046810 A1 WO2012046810 A1 WO 2012046810A1 JP 2011073113 W JP2011073113 W JP 2011073113W WO 2012046810 A1 WO2012046810 A1 WO 2012046810A1
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- WIPO (PCT)
- Prior art keywords
- meth
- acrylate
- resin composition
- hydroxyl group
- composition according
- Prior art date
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Classifications
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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
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
-
- 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
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3833—Polymers with mesogenic groups in the side chain
- C09K19/3885—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
Definitions
- the present invention relates to a resin composition.
- the present invention relates to, for example, an adhesive, a hard coat agent, and an electronic device using the same.
- the capacitive touch panel has a structure in which a transparent electrode is formed on a transparent substrate, and a transparent plate is bonded to the transparent electrode.
- bonding of the decorative plate and the touch panel, bonding of the icon sheet and the touch panel, and bonding of the transparent substrate on which the transparent electrode is formed in the capacitive touch panel and the transparent plate are performed by sheet-like double-sided adhesive. This is done by using a sheet or by performing adhesive processing on one side of the adherend.
- adhesion is insufficient or bubbles are mixed into the bonding surface.
- bubbles are likely to remain in the stepped portions where printing is performed and where printing is not performed.
- the present invention is sufficient when, for example, a decorative plate or icon sheet used for a display body such as a touch panel is bonded, or when a transparent substrate on which a transparent electrode is formed in a capacitive touch panel is bonded to a transparent substrate.
- the present invention provides an adhesive and a hard coat agent that imparts adhesiveness and solves the problems of the prior art that it is difficult to bond without containing bubbles.
- the present invention provides, for example, an adhesive and a hard coat agent that solve the problems of the prior art in which, when a display body and an optical functional material are bonded together, the adhesive surface peels off or the glass of the display body is broken. It is.
- the present invention provides a resin composition.
- This resin composition is a urethane acrylate obtained by reacting a hydroxyl group-containing (meth) acrylic acid ester monomer (A), a hydroxyl group-containing photopolymerization initiator (B) and an isocyanate group-containing isocyanate (C).
- the (meth) acrylic acid ester monomer (A) having a hydroxyl group is a compound having two or more (meth) acryloyl groups.
- the photopolymerization initiator (B) having a hydroxyl group has two or more hydroxyl groups.
- the present invention from another aspect provides a cured product of this resin composition. From still another aspect, the present invention provides a composite in which an adherend is coated or bonded with the cured body.
- the adherend of the composite is at least one selected from the group consisting of triacetylcellulose, fluorine-based polymer, polyester, polycarbonate, polyolefin, glass, and metal.
- the present invention provides a touch panel laminate in which an adherend is bonded with the resin composition, and the present invention further provides a display using the touch panel laminate.
- the present invention provides a liquid crystal panel laminate in which an adherend is bonded with the resin composition, and the present invention further provides a display using the liquid crystal panel laminate.
- the present invention provides an adhesive comprising the above resin composition. Moreover, from another viewpoint, this invention provides the hard-coat agent which consists of this resin composition.
- the resin composition of the present invention has effects such as high transparency, high pencil hardness, and high adhesion.
- the urethane acrylate (D) having a photopolymerization initiator includes a (meth) acrylic acid ester monomer (A) having a hydroxyl group, a photopolymerization initiator (B) having a hydroxyl group, and an isocyanate having two or more isocyanate groups ( And C).
- the (meth) acrylic acid ester monomer (A) having a hydroxyl group has at least one (meth) acrylate group and a hydroxyl group.
- examples of the (meth) acrylate having one (meth) acrylate group and a hydroxyl group include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and propylene.
- Examples include glycol (meth) acrylate.
- Examples of the (meth) acrylate compound having two or more (meth) acrylate groups and a hydroxyl group include glycerin di (meth) acrylate, pentaerythritol tri (meth) acrylate, hydroxypropylated trimethylolpropane tri (meth) acrylate, Examples thereof include dipentaerythritol hydroxypenta (meth) acrylate, bis (pentaerythritol) tetra (meth) acrylate, tetramethylolmethane-tri (meth) acrylate, and 2-hydroxy-3- (meth) acryloyloxypropyl methacrylate.
- the number of (meth) acrylate groups in the (meth) acrylic acid ester monomer (A) having a hydroxyl group is preferably 2 or more, and more preferably 3 or more.
- the number of hydroxyl groups in the (meth) acrylic acid ester monomer (A) having a hydroxyl group is preferably 2 or more.
- the photopolymerization initiator (B) having a hydroxyl group has at least one hydroxyl group.
- Examples of the photopolymerization initiator having one hydroxyl group include 2-hydroxy-methyl-1-phenyl-propan-1-one (manufactured by Ciba Japan, product name Darocur 1173), 1-hydroxy-cyclohexyl-phenyl- Examples include ketones (product name Irgacure 184, manufactured by Ciba Japan).
- Examples of the photopolymerization initiator having two or more hydroxyl groups include 1- [4- (hydroxyethoxy) -phenyl] -2-hydroxy-2methyl-1-propan-1-one (manufactured by Ciba Japan, Product name Irgacure 2959), 2-hydroxy-1- ⁇ 4- [4- (2-hydroxy-2-methyl-propionyl) -benzyl] -phenyl ⁇ -2-methyl-propan-1-one (manufactured by Ciba Japan) Product name Irgacure 127) and the like.
- the number of hydroxyl groups in the photopolymerization initiator (B) having a hydroxyl group is preferably 2 or more.
- the photoinitiator cleaved after irradiation can be taken into the reaction system of the acryloyl group of the (meth) acrylate monomer (A), and thus migration can be suppressed.
- the upper limit of the number of hydroxyl groups is not particularly limited.
- the isocyanate (C) having an isocyanate group preferably has two or more isocyanate groups.
- the isocyanate (C) having two or more isocyanate groups include aromatic diisocyanate, alicyclic diisocyanate, and aliphatic diisocyanate, and aromatic isocyanate or alicyclic isocyanate is preferably used.
- As the form of the isocyanate compound there are a monomer, a dimer, and a trimer, and a trimer is preferably used.
- aromatic diisocyanates examples include tolylene diisocyanate, 4,4-diphenylmethane diisocyanate, and xylylene diisocyanate.
- alicyclic diisocyanate examples include isophorone diisocyanate and methylene bis (4-cyclohexyl isocyanate).
- aliphatic diisocyanate examples include hexamethylene diisocyanate and trimethylhexamethylene diisocyanate.
- a trimethylolpropane adduct body of the above diisocyanate, a burette body reacted with water, a trimer having an isocyanurate ring, and the like are also preferably used.
- (A) is preferably 6 or more, more preferably 9 or more.
- (A) is preferably 9.9 or less, and more preferably 9.8 or less.
- Total (A) + (B) 10 of the number of moles of hydroxyl group of the (meth) acrylic acid ester monomer (A) having the hydroxyl group and the number of moles of hydroxyl group of the photopolymerization initiator (B) having the hydroxyl group.
- the number of moles of isocyanate groups in the isocyanate (C) having two or more isocyanate groups is preferably 8 to 12, and more preferably 9 to 11.
- the method for producing the urethane acrylate (D) having the photopolymerization initiator is not particularly limited.
- the urethane acrylate (D) having the photopolymerization initiator for example, the (meth) acrylic acid ester monomer (A) having a hydroxyl group and the photopolymerization initiator (B) having a hydroxyl group are mixed in a solvent such as ethyl acetate.
- the mixture can be heated to 40 ° C. with stirring, and then the isocyanate (C) having two or more isocyanate groups can be continuously added over 2 hours and further stirred for 6 hours.
- Polymerizable (meth) acrylate (E) is a polymerizable (meth) acrylic composition and may be any radical polymer capable of radical polymerization. Examples thereof are as follows.
- the (meth) acrylic composition is a general description of methacrylic acid ester and acrylic acid ester (hereinafter referred to as ⁇ (meth) acrylate).
- Examples of the polymerizable (meth) acrylate (E) include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and isooctyl (meth) ) Acrylate, isodecyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, phenyl (meth) acrylate, cyclohexyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate , Isobornyl (meth) acrylate, methoxylated cyclotriene (meth) acrylate, dicyclopentenyloxyethyl (meth) acrylate, 2-hydroxyethyl (meth)
- Aronix M-1100 polyethylene glycol urethane modified di (Meth) acrylate, polypropylene glycol urethane modified di (meth) acrylate, epoxy (meth) acrylate (“Aronix M-5710” manufactured by Toagosei Co., Ltd.), polybutadiene di (meth) acrylate (manufactured by Nippon Soda Co., “TE-2000” )), Acrylonitrile butadiene (meth) acrylate (manufactured by Ube Industries, “HyCAr VTBNX”), benzyl (meth) acrylate, glycerol (meth) acrylate, glycerol di (meth) acrylate, phenoxydiethylene glycol (meth) acrylate, 2 , 2-bis (4- (meth) acryloxyphenyl) propane, 2,2-bis (4- (meth) acryloxydiethoxyphenyl) propane, 2,2-bis (4- (- (
- the above component (E) can be used alone or in combination of two or more thereof, and is selected from the group consisting of isobornyl (meth) acrylate, dicyclopentenyl di (meth) acrylate, and trimethylolpropane tri (meth) acrylate.
- One or more types are desirable. This is advantageous in that it exhibits a high retention rate in durability tests such as a high temperature and high humidity test and a weather resistance test.
- a silane coupling agent can be contained as the component (F) for the purpose of improving the adhesion to glass or plastic.
- silane coupling agents include ⁇ -chloropropyltrimethoxysilane, vinyltrimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyl-tris ( ⁇ -methoxyethoxy) silane, and ⁇ - (meth) acryloxypropyl.
- Trimethoxysilane ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, N- ⁇ - ( Aminoethyl) - ⁇ -aminopropyltrimethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropylmethyldimethoxysilane, ⁇ -ureidopropyltriethoxysilane and the like.
- ⁇ -glycidoxypropyltrimethoxysilane and / or ⁇ - (meth) acryloxypropyltrimethoxysilane are preferable from the viewpoint of adhesion to glass or the like, and ⁇ -glycidoxypropyltrimethoxysilane is preferable. Is more preferable.
- the resin composition of the present invention may contain 5 to 95 parts by weight of component (D) and 5 to 95 parts by weight of component (E) in a total of 100 parts by weight of component (D) and component (E). More preferably, it contains 10 to 90 parts by weight of component (D), 10 to 90 parts by weight of component (E), 30 to 80 parts by weight of component (D), and 20 to 70 parts of component (E). Most preferably, it contains parts by mass.
- the amount of the component (F) used is 0.01 to 10 parts by mass with respect to 100 parts by mass of the components (D) and (E). Is particularly high, and the curability is favorable, and the content of 0.1 to 5 parts by mass is more preferable.
- a commercially available antioxidant containing a polymerization inhibitor can be used.
- plasticizers such as plasticizers, fillers, colorants, and rust inhibitors may be used as desired.
- the resin composition is irradiated with visible light or ultraviolet light to cure and bond the composition.
- Cumulative amount of the visible light or ultraviolet is preferably 100 ⁇ 40000mJ / cm 2 at 365 nm, more preferably 500 ⁇ 4000mJ / cm 2.
- the resin composition of the present invention serves as a protective base material in place of a transparent substrate on a transparent substrate on which a transparent electrode in a touch panel is formed.
- the resin composition of the present invention is bonded without containing bubbles and ensures sufficient adhesiveness.
- the resin composition of the present invention can be used as an adhesive or a hard coat agent.
- a composite can be produced by bonding or covering the adherend with a cured body of the resin composition.
- a to-be-adhered body 1 or more types chosen from the group which consists of polyolefin, glass, a metal, such as triacetylcellulose, a fluorine-type polymer, polyester, a polycarbonate, a cycloolefin polymer, is preferable, and consists of polyester, a polycarbonate, and glass.
- a metal such as triacetylcellulose, a fluorine-type polymer, polyester, a polycarbonate, a cycloolefin polymer, is preferable, and consists of polyester, a polycarbonate, and glass.
- One or more selected from the group is more preferred.
- a laminate can be produced by bonding the adherend with the resin composition of the present invention.
- Examples of the laminate include electronic devices such as a touch panel laminate and a liquid crystal panel laminate.
- a touch panel laminated body, a liquid crystal panel laminated body, etc. can be used for a display.
- Table 1 shows the composition of the compounds used for the urethane acrylate (D) having a photopolymerization initiator
- Tables 2 and 3 summarize the composition of the composition and its evaluation.
- Each compound described in Table 1 is as follows.
- the urethane acrylate (D) having a photopolymerization initiator is prepared by combining a (meth) acrylic acid ester monomer (A) having a hydroxyl group and a photopolymerization initiator (B) having a hydroxyl group in ethyl acetate under light-shielding conditions. After heating to 40 ° C. with stirring, an isocyanate (C) having two or more isocyanate groups was continuously added over 2 hours, and the mixture was further stirred for 6 hours.
- Tables 1 to 3 show the main components of the adhesive or hard coat agent corresponding to each of the examples and comparative examples and their blending amounts.
- the components (E) and (F) described above are blended.
- Comparative Examples 1 and 2 instead of urethane acrylate (D) having a photopolymerization initiator, 50 to 100 parts by mass of urethane acrylate oligomer (manufactured by Negami Kogyo Co., Ltd., product name UN-3320HS) and a photopolymerization initiator (Ciba -The composition was prepared using what mix
- Tables 1 to 3 collectively show the results of the total light transmittance, haze, pencil hardness, and light resistance test of each film obtained.
- the performance test method is as follows.
- Total light transmittance and haze Using a haze meter (manufactured by Suga Test Instruments Co., Ltd.), the measurement was performed according to JIS K7361 and JIS K7136.
- Tempax glass 25 mm ⁇ 25 mm ⁇ 2 mm
- the bonded part was 8 mm ⁇ (the bonded part is 8 mm ⁇ means that the bonded part is a circle having a diameter of 8 mm), and two Tempax glasses were bonded together using the resin composition.
- a tensile shear bond strength test piece was prepared by curing with a curing device manufactured by Fusion Corporation using an electrodeless discharge lamp under conditions of an integrated light quantity of 2000 mJ / cm 2 with a wavelength of 365 nm. The test piece was measured for tensile shear bond strength at a tensile speed of 10 mm / min in an environment of a temperature of 23 ° C. and a humidity of 50% using a universal testing machine.
- a PET film (10 mm ⁇ 50 mm ⁇ 185 ⁇ m) was used as the adherend. Two PET films were bonded together by using a resin composition with an adhesion site of 10 mm ⁇ 30 mm.
- a peel adhesive strength test piece was prepared by curing under a condition of an integrated light amount of 2000 mJ / cm 2 with a wavelength of 365 nm by a fusion device using an electrodeless discharge lamp. The test piece was measured for peel adhesion strength at a tensile speed of 50 mm / min in an environment of a temperature of 23 ° C. and a humidity of 50% using a universal testing machine.
- Tensile shear bond strength to polycarbonate (bond strength, polycarbonate) It measured according to JIS K 6850.
- a polycarbonate plate (25 mm ⁇ 25 mm ⁇ 2 mm) was used as the adherend.
- the adhesive part was 8 mm ⁇ (the adhesive part is 8 mm ⁇ means that the adhesive part is a circle having a diameter of 8 mm), and two polycarbonate plates were bonded together using the resin composition.
- a tensile shear bond strength test piece was prepared by curing with a curing device manufactured by Fusion Corporation using an electrodeless discharge lamp under conditions of an integrated light quantity of 2000 mJ / cm 2 with a wavelength of 365 nm. The test piece was measured for tensile shear bond strength at a tensile speed of 10 mm / min in an environment of a temperature of 23 ° C. and a humidity of 50% using a universal testing machine.
- the resin composition of the present invention has the following characteristics. (1) The resin composition of the present invention can be bonded without containing bubbles, and has high transparency. The resin composition of this invention becomes a protective base material of a transparent substrate. (2) The resin composition of the present invention has a high pencil hardness, particularly after the light resistance test. The resin composition of the present invention can provide a hard coat agent that is hardly damaged even when used in an environment exposed to light. (3) The resin composition of the present invention ensures sufficient adhesion. The resin composition of the present invention can be used as an adhesive.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Paints Or Removers (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Laminated Bodies (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
この樹脂組成物の一実施形態においては、水酸基を有する(メタ)アクリル酸エステル単量体(A)が、(メタ)アクリロイル基を2個以上有する化合物である。更に別の一実施形態においては、水酸基を有する光重合開始剤(B)が、水酸基を2個以上有する。
更に別の側面から本発明は、本発明は、該硬化体により被着体が被覆又は接合された複合体を提供する。
この複合体の一実施形態においては、該複合体の被着体がトリアセチルセルロース、フッ素系ポリマー、ポリエステル、ポリカーボネート、ポリオレフィン、ガラス、金属からなる群から選ばれる1種以上である。
実施例に係る接着剤乃至ハードコート剤は下記の処方で製造した。
水酸基を有する(メタ)アクリル酸エステル単量体(A)-イ:2-ヒドロキシエチルメタクリレート;
水酸基を有する(メタ)アクリル酸エステル単量体(A)-ロ:ペンタエリスリトールトリアクリレート(大阪有機化学社製、製品名V#300);
水酸基を有する(メタ)アクリル酸エステル単量体(A)-ハ:グリセリンジメタクリレート(共栄社化学社製、製品名ライトエステルG-101P);
水酸基を有する光重合開始剤(B)-イ:1-ヒドロキシ-シクロヘキシル-フェニル-ケトン(チバ・ジャパン社製、製品名Irgacure184);
水酸基を有する光重合開始剤(B)-ロ:2-ヒドロキシ-1-{4-[4-(2-ヒドロキシ-2-メチル-プロピオニル)-ベンジル]-フェニル}-2-メチル-プロパン-1-オン(チバ・ジャパン社製、製品名Irgacure127);
水酸基を有する光重合開始剤(B)-ハ:1-[4-(ヒドロキシエトキシ)-フェニル]-2-ヒドロキシ-2メチル-1-プロパン-1-オン(チバ・ジャパン社製、製品名Irgacure2959);
2個以上のイソシアネート基を有するイソシアネート(C)-イ:ヘキサメチレンジイソシアネートの3量体(旭化成ケミカルズ社製、製品名デュネラート TPA-100);
2個以上のイソシアネート基を有するイソシアネート(C)-ロ:トリレンジイソシアネート;
重合可能な(メタ)アクリレート(E)-イ:ジシクロペンテニルジアクリレート;
重合可能な(メタ)アクリレート(E)-ロ:トリメチロールプロパントリアクリレート;
シランカップリング剤(F)-イ:γ-メタクリロキシプロピルトリメトキシシラン;
シランカップリング剤(F)-ロ:γ-グリシドキシプロピルトリメトキシシラン
各実施例及び比較例に対応する接着剤乃至ハードコート剤の主な成分とその配合量は、表1~3に示す通りである。調製にあたっては、これらの表1に示した成分に加えて、上述の(E)成分及び(F)成分を配合したものである。
比較例1~2においては、光重合開始剤を有するウレタンアクリレート(D)の代わりに、ウレタンアクリレートオリゴマ(根上工業社製、製品名UN-3320HS)50~100質量部と光重合開始剤(チバ・ジャパン社製、製品名Irugacure651)3質量部を配合したものを用いて組成物を調製した。
温度23℃で測定した。光硬化性に関しては、テンパックスガラス(25mm×25mm×2mm)の表面に硬化性樹脂組成物を厚み0.1mmになるように塗布した。その後、無電極放電ランプを使用したフュージョン社製硬化装置を用い、波長365nmのUV光を積算光量2000mJ/cm2の条件にて照射し、硬化させた。光硬化性として、硬化率を記載した。硬化率は、FT-IRを使用し、以下の式により算出した。
(硬化率)=[100-((硬化後の、炭素と炭素の二重結合の吸収スペクトルの強度)/(硬化前の、炭素と炭素の二重結合の吸収スペクトルの強度))]×100(%)
光硬化性の評価は次の通り。
○:表面にタック無し(FT-IRから算出した硬化率:90%以上)、△:表面の一部にタック有り(FT-IRから算出した硬化率:50%-89%)、×:表面全体にタック有り(FT-IRから算出した硬化率:0-49%)。
得られた組成物を、膜厚が10μmとなる様に、バーコーターにてテンパックスガラス(25mm×25mm×2mmt)上に塗布し、〔光硬化性〕に従い硬化後、組成物の皮膜を形成した。
ヘーズメーター(スガ試験機社製)を使用し、JIS K7361及びJIS K7136に準拠して測定した。
スクラッチ試験機(KASAI社製)を使用し、JIS K5600-5-4に準拠し、荷重1kgで測定した。
サンシャインウエザーメーター(スガ試験機社製)を用い、サンプルのコーティング面側に紫外線を照射し、200時間暴露した(水噴霧なし)。暴露後のサンプルについて、鉛筆硬度を測定した。
JIS K 6850に従い測定した。被着材としてテンパックスガラス(25mm×25mm×2mm)を用いた。接着部位を8mmφ(接着部位を8mmφとは、接着部位が直径8mmの円であることをいう)として、樹脂組成物を用い、2枚のテンパックスガラスを貼り合わせた。無電極放電ランプを使用したフュージョン社製硬化装置により、365nmの波長の積算光量2000mJ/cm2の条件にて硬化させ、引張せん断接着強さ試験片を作製した。試験片は、万能試験機を使用して、温度23℃、湿度50%の環境下、引張速度10mm/minで引張せん断接着強さを測定した。
被着材としてPETフィルム(10mm×50mm×185μm)を用いた。接着部位を10mm×30mmとして、樹脂組成物を用い、2枚のPETフィルムを貼り合わせた。無電極放電ランプを使用したフュージョン社製硬化装置により、365nmの波長の積算光量2000mJ/cm2の条件にて硬化させ、剥離接着強さ試験片を作製した。試験片は、万能試験機を使用して、温度23℃、湿度50%の環境下、引張速度50mm/minで剥離接着強さを測定した。
JIS K 6850に従い測定した。被着材としてポリカーボネート板(25mm×25mm×2mm)を用いた。接着部位を8mmφ(接着部位を8mmφとは、接着部位が直径8mmの円であることをいう)として、樹脂組成物を用い、2枚のポリカーボネート板を貼り合わせた。無電極放電ランプを使用したフュージョン社製硬化装置により、365nmの波長の積算光量2000mJ/cm2の条件にて硬化させ、引張せん断接着強さ試験片を作製した。試験片は、万能試験機を使用して、温度23℃、湿度50%の環境下、引張速度10mm/minで引張せん断接着強さを測定した。
(1)本発明の樹脂組成物は、気泡を含まずに貼り合わせることができ、透明性が大きい。本発明の樹脂組成物は、透明基板の保護基材となる。
(2)本発明の樹脂組成物は、鉛筆硬度、特に耐光性試験後の鉛筆硬度が大きい。本発明の樹脂組成物は、光暴露の環境下で使用しても傷が付きにくいハードコート剤を提供できる。
(3)本発明の樹脂組成物は、十分な接着性を確保する。本発明の樹脂組成物は、接着剤として使用できる。
Claims (12)
- 水酸基を有する(メタ)アクリル酸エステル単量体(A)と水酸基を有する光重合開始剤(B)とイソシアネート基を有するイソシアネート(C)とを反応させて得られるウレタンアクリレート(D)、重合可能な(メタ)アクリレート(E)、シランカップリング剤(F)を含有する樹脂組成物。
- 水酸基を有する(メタ)アクリル酸エステル単量体(A)が、(メタ)アクリロイル基を2個以上有する化合物である請求項1記載の樹脂組成物。
- 水酸基を有する光重合開始剤(B)が、水酸基を2個以上有する化合物である請求項1又は2記載の樹脂組成物。
- 請求項1~3記載の樹脂組成物の硬化体。
- 請求項4記載の硬化体により被着体が被覆又は接合された複合体。
- 請求項5記載の複合体の被着体がトリアセチルセルロース、フッ素系ポリマー、ポリエステル、ポリカーボネート、ポリオレフィン、ガラス、金属からなる群から選ばれる1種以上である複合体。
- 請求項1~3に記載の樹脂組成物で被着体が貼り合わされたタッチパネル積層体。
- 請求項1~3に記載の樹脂組成物で被着体が貼り合わされた液晶パネル積層体。
- 請求項7に記載のタッチパネル積層体を用いたディスプレイ。
- 請求項8に記載の液晶パネル積層体を用いたディスプレイ。
- 請求項1~3記載の樹脂組成物からなる接着剤。
- 請求項1~3記載の樹脂組成物からなるハードコート剤。
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JP2014062195A (ja) * | 2012-09-21 | 2014-04-10 | Ksm Kk | 光硬化性組成物、及び、光硬化性組成物の製造方法 |
WO2015072532A1 (ja) * | 2013-11-15 | 2015-05-21 | 富士フイルム株式会社 | 硬化性組成物、硬化膜の製造方法、硬化膜および表示装置 |
JP2015520792A (ja) * | 2012-05-30 | 2015-07-23 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 放射線硬化性化合物 |
WO2019206846A1 (en) * | 2018-04-25 | 2019-10-31 | Basf Se | Process for the production of strongly adherent liquid crystal films on flexible substrates |
JP2020037689A (ja) * | 2018-09-03 | 2020-03-12 | 荒川化学工業株式会社 | 活性エネルギー線硬化型粘着剤組成物、硬化物及び粘着シート |
JP2020164840A (ja) * | 2019-03-27 | 2020-10-08 | 荒川化学工業株式会社 | 保護フィルム用紫外線硬化型粘着剤組成物、硬化物、保護シート |
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KR102307244B1 (ko) | 2014-12-02 | 2021-10-01 | 삼성디스플레이 주식회사 | 표시 장치 |
KR102126046B1 (ko) * | 2017-08-31 | 2020-06-24 | 삼성에스디아이 주식회사 | 점착 필름, 이를 위한 점착제 조성물 및 이를 포함하는 디스플레이 부재 |
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