WO2012165259A1 - エネルギー線硬化性樹脂組成物 - Google Patents
エネルギー線硬化性樹脂組成物 Download PDFInfo
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- WO2012165259A1 WO2012165259A1 PCT/JP2012/063192 JP2012063192W WO2012165259A1 WO 2012165259 A1 WO2012165259 A1 WO 2012165259A1 JP 2012063192 W JP2012063192 W JP 2012063192W WO 2012165259 A1 WO2012165259 A1 WO 2012165259A1
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- resin composition
- curable resin
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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
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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
- 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
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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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
- C08F20/00—Homopolymers and 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 a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/10—Esters
- C08F20/26—Esters containing oxygen in addition to the carboxy oxygen
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
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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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/223—Di-epoxy compounds together with monoepoxy compounds
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
Definitions
- the present invention relates to an energy ray curable resin composition, an adhesive using the same, and a cured product.
- energy ray curable adhesives that can be cured in a short time with energy rays such as ultraviolet rays have been applied to the assembly of components and the mounting of semiconductor device packages and the like.
- the components include electronic products such as liquid crystal panels, organic electroluminescence panels, touch panels, projectors, smartphones, mobile phones, digital cameras, digital movies, LEDs, and solar cells.
- the semiconductor element include a CCD, a CMOS, a flash memory, and a DRAM.
- Energy ray curable adhesives used in these fields are required to have high adhesion to various materials and high reliability that can withstand heat, humidity, heat cycle, and the like. Furthermore, the energy ray curable adhesives used in these fields are exposed to chemicals such as alcohol, acid, alkali, etc. in the cleaning process, etching process, etc., so that they are resistant to these various chemicals, so-called resistance. There is a need for adhesives having chemical properties.
- the energy ray curable adhesive is required to have high transparency in the visible light range of 400 nm to 800 nm.
- Acrylic, epoxy, and ene / thiol adhesives are on the market.
- Acrylic and ene / thiol adhesives are excellent in fast curability and adhesiveness, but have a problem of poor chemical resistance.
- Epoxy adhesives are excellent in chemical resistance and adhesiveness, but have a problem of inferior rapid curability.
- Patent Documents 1 to 3 resin compositions having an acrylic compound and an epoxy compound
- Patent Documents 4 to 8 resin compositions having an acrylic group and an epoxy group in the same molecule
- these known resin compositions do not satisfy the fast curability, adhesiveness, and chemical resistance required for the above-mentioned adhesive.
- the amount of component (A) is different from Patent Document 7.
- the present invention relates to an energy beam curable resin composition having rapid curability.
- the present invention includes the following aspects (1) to (7).
- (1) Compound having (meth) acryloyl group and alicyclic epoxy group in the molecule represented by the following formula [1]
- the energy ray-curable resin composition having the above-described configuration can satisfy, for example, quick curability.
- the energy ray curable resin composition means a resin composition that can be cured by irradiation with energy rays.
- the energy rays mean energy rays typified by ultraviolet rays and visible rays.
- the molecular weight means a weight average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC).
- a polymerization component means (A) component, (D) component used as needed, and (E) component used as needed.
- the energy ray-curable resin composition according to the present embodiment includes, as an essential component, a compound having a (meth) acryloyl group and an alicyclic epoxy group in the molecule represented by the following formula [1] as the component (A). To do.
- R represents hydrogen or a methyl group
- X represents an alkyl chain having 1 to 6 carbon atoms or an oxyalkylene chain having 1 to 6 carbon atoms.
- Examples of the oxyalkylene chain include —R′—O—.
- R ′ refers to alkylene having 1 to 6 carbon atoms.
- the formula [1] is represented by the following formula [1 ′].
- 3,4-epoxycyclohexylmethyl (meth) acrylate, 3,4-epoxycyclohexylethyl (meth) acrylate, 3,4-epoxycyclohexylpropyl (meth) acrylate examples include 4-epoxycyclohexylbutyl (meth) acrylate, ethylene oxide-modified 3,4-epoxycyclohexylmethyl (meth) acrylate, and propylene oxide-modified 3,4-epoxycyclohexylmethyl (meth) acrylate.
- 3,4-epoxycyclohexylmethyl (meth) acrylate is preferable in terms of excellent chemical resistance.
- the component (A) is preferably contained in a proportion of more than 65 parts by mass and 100 parts by mass or less in a total amount of 100 parts by mass of the polymerization component composed of the components (A), (D) and (E). If it is in this range, the curability will not deteriorate, and the adhesiveness and chemical resistance will not deteriorate. In particular, 70 parts by mass or more and 95 parts by mass or less are more preferable in terms of curability, adhesiveness, and chemical resistance.
- the energy ray-curable resin composition according to the present embodiment includes a cationic photopolymerization initiator as an essential component as the component (B).
- the photocationic polymerization initiator as the component (B) is not particularly limited as long as it is a compound that generates a cationic species when irradiated with energy rays.
- arylsulfonium salt derivatives for example, Cyracure UVI-6990, Cyracure UVI-6974, manufactured by Dow Chemical Co., Ltd., Adekaoptomer SP manufactured by Asahi Denka Kogyo Co., Ltd.
- Adeka optomer SP-152 Adeka optomer SP-170
- Adeka optomer SP-172 Adeka optomer SP-172, CPI-100P, CPI-101A, CPI-200K, CPI-210S made by San Apro, Ciba Cure 1190 made by Double Bond CGI * TPS C1, GSID26-1, etc.
- aryliodonium salt derivatives for example, Irgacure 250 manufactured by Ciba Specialty Chemicals, CGI * BBI C1 manufactured by Ciba Japan, Rhodia Japan Co., Ltd.
- RP- 074 aryliodonium salt derivatives
- Allen - ion complex derivatives for example, Irgacure 250 manufactured by Ciba Specialty Chemicals, CGI * BBI C1 manufactured by Ciba Japan, Rhodia Japan Co., Ltd.
- Allen - ion complex derivatives for example, Irgacure 250 manufactured by Ciba Specialty Chemicals, CGI * BBI C1 manufactured by Ciba Japan, Rhodia Japan Co., Ltd.
- Allen - ion complex derivatives for example, Irgacure 250 manufactured by Ciba Specialty Chemicals, CGI * BBI C1 manufactured by Ciba Japan, Rhodia Japan Co., Ltd.
- Allen - ion complex derivatives for example, Irgacure 250 manufactured
- anionic species of the photocationic polymerization initiator include halides such as boron compounds, phosphorus compounds, antimony compounds, arsenic compounds, and alkyl sulfonic acid compounds. Among these, arylsulfonium salt derivatives are preferable in terms of excellent curability.
- the cationic photopolymerization initiator of component (B) is contained in a proportion of 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of polymerization components composed of component (A), component (D) and component (E). It is preferable to make it. If it is in this range, the curability will not deteriorate, and the adhesiveness and chemical resistance will not deteriorate. In particular, in terms of curability, adhesiveness, and chemical resistance, the amount of the photocationic polymerization initiator (B) used is more preferably 0.3 to 5 parts by mass, and most preferably 0.5 to 3 parts by mass. .
- the energy beam curable resin composition according to the present embodiment includes a radical photopolymerization initiator as an essential component as the component (C).
- the radical photopolymerization initiator of component (C) is not particularly limited as long as it is a compound that generates radicals when irradiated with energy rays.
- radical photopolymerization initiator of the component (C) used in the present invention examples include benzophenone, 4-phenylbenzophenone, benzoylbenzoic acid, 2,2-diethoxyacetophenone, bisdiethylaminobenzophenone, benzyl, benzoin, benzoylisopropyl ether, benzyl Dimethyl ketal, 1-hydroxycyclohexyl phenyl ketone, thioxanthone, 1- (4-isopropylphenyl) 2-hydroxy-2-methylpropan-1-one, 1- (4- (2-hydroxyethoxy) -phenyl) -2- Hydroxy-2-methyl-1-propan-1-one, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 2-hydroxy-1- ⁇ 4- [4- (2-hydroxy-2- Methyl-propionyl) -benzyl] pheni ⁇ -2-Methyl-propan-1-one, camphorquinone, 2,4,6-
- the (C) component radical photopolymerization initiator is contained in a proportion of 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of the polymerization components composed of the (A), (D) and (E) components. It is preferable to make it. If it is in this range, the curability will not deteriorate, and the adhesiveness and chemical resistance will not deteriorate.
- the amount of the radical photopolymerization initiator (C) used is more preferably 0.5 to 5 parts by mass, and most preferably 1 to 3 parts by mass.
- a photosensitizer means a compound that absorbs energy rays and efficiently generates cations and radicals from a photocationic polymerization initiator or a photoradical polymerization initiator.
- the photosensitizer is preferably contained in a proportion of 0.1 to 5 parts by mass with respect to 100 parts by mass of the total amount of the polymerization components. If it is within this range, the adhesiveness and chemical resistance will not be lowered.
- the use amount of the photosensitizer is more preferably 0.3 to 3 parts by mass, and most preferably 0.5 to 2 parts by mass from the viewpoint of curability, adhesion, and chemical resistance.
- the energy beam curable resin composition according to this embodiment preferably contains an oligomer having one or more epoxy groups in the molecule as the component (D).
- oligomer having one or more epoxy groups in the molecule of the component (D) used in the present invention examples include aromatic, aliphatic and alicyclic oligomers.
- Aromatic resins include bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, biphenyl type epoxy resin, fluorene type epoxy resin, novolac phenol type epoxy resin, cresol novolac type epoxy resin, and modified products thereof. Etc.
- Aliphatics include epoxidized modified polyolefins such as epoxidized modified polybutadiene and epoxidized modified polyisoprene, diglycidyl ethers of polyethylene glycol adducts, diglycidyl ethers of polyalkylene glycols such as diglycidyl ethers of polypropylene glycol adducts, etc. Is mentioned.
- Examples of the alicyclic system include 1,2-epoxy-4- (2-oxiranyl) cyclohexane adduct of 2,2-bis (hydroxymethyl) -1-butanol and hydrogenated products of the above-mentioned aromatic epoxy resins. Can be mentioned.
- epoxidized modified polybutadiene epoxidized modified polyisoprene
- epoxidized modified polybutadiene is more preferable.
- the microstructure of polybutadiene is not particularly limited.
- a low-cis polybutadiene skeleton with a small proportion of 1,4-cis isomer units, a high-cis polybutadiene skeleton with a large proportion of 1,4-cis isomer units, and a 1,2-polybutadiene skeleton are included. Any of the 1,2-cis bodies shown may be used. One or more of these may be mixed.
- the molecular weight of the oligomer having one or more epoxy groups in the molecule of component (D) is preferably 350 to 100,000, more preferably 500 to 50,000, and most preferably 2,000 to 20,000. If the molecular weight is 350 or more, the chemical resistance is not lowered, and if it is 100,000 or less, the curability is not lowered.
- the molecular weight said here means a number average molecular weight, and means the number average molecular weight of polystyrene conversion measured by gel permeation chromatography (GPC).
- numerator of a component is (A) component, (D) component, and (E) component, when the balance of quick curability, adhesiveness, and chemical resistance is considered. 5 to 35 parts by mass is preferable, and 10 to 30 parts by mass is more preferable in a total amount of the polymerization component consisting of
- the energy ray curable resin composition according to the present embodiment can contain a cationically polymerizable monomer other than the components (A) and (B) as the component (E) as long as the target physical properties are not impaired. .
- Examples of the cationically polymerizable monomer other than the components (A) and (B) that are the component (E) used in the present invention include a cyclic ether monomer, a cyclic thioether monomer, and a cationic polymerizable vinyl monomer.
- Examples of cyclic ether monomers include monomers such as epoxy and oxetane.
- Examples of the thioether monomer include isobutylene sulfide.
- Examples of the cationic polymerizable vinyl monomer include vinyl ether, vinyl amine, and styrene. These monomers or derivatives may be used alone or in combination of two or more.
- the vinyl ether monomer is not particularly limited, but ethylene glycol divinyl ether, ethylene glycol monovinyl ether, diethylene glycol divinyl ether, triethylene glycol monovinyl ether, triethylene glycol divinyl ether, propylene glycol divinyl ether, dipropylene glycol divinyl ether, butane Di- or trivinyl ether compounds such as diol divinyl ether, hexanediol divinyl ether, cyclohexane dimethanol divinyl ether, hydroxyethyl monovinyl ether, hydroxynonyl monovinyl ether, trimethylolpropane trivinyl ether, ethyl vinyl ether, n-butyl vinyl ether, isobutyl vinyl ether, octadecyl Monovinyl ethers such as nil ether, cyclohexyl vinyl ether, hydroxybutyl vinyl ether, 2-
- the vinylamine monomer is not particularly limited, and examples thereof include N-vinyldimethylamine, N-vinylethylbutylamine, N-vinyldiphenylamine, N-vinylformamide, and N-vinylacetamide compound.
- a cyclic ether monomer is preferable, and 3,4-epoxycyclohexenylmethyl-3 ′, 4′-epoxy is preferable.
- One or more of cyclohexenecarboxylate and di (1-ethyl-3-oxetanyl) methyl ether are preferred.
- the cationic polymerizable monomers other than the components (A) and (B) which are the components (E) are components (A) and (D) when considering the balance between fast curability, adhesion and chemical resistance.
- 5 to 35 parts by mass are preferable, and 10 to 30 parts by mass are more preferable, in 100 parts by mass of the total amount of the polymerization components composed of the component (E).
- 1 type (s) or 2 or more types in the group which consists of a phenolic antioxidant and a quinone antioxidant can be contained as antioxidant.
- a phosphine oxide derivative may be used.
- a filler inorganic filler may further be contained.
- various elastomers such as acrylic rubber and urethane rubber, and graft copolymers such as methyl methacrylate-butadiene-styrene graft copolymer and acrylonitrile-butadiene-styrene graft copolymer
- Additives such as solvents, extenders, reinforcing materials, plasticizers, thickeners, dyes, pigments, flame retardants and surfactants may be contained.
- a silane coupling agent can be contained 1 type or 2 types or more in arbitrary ratios.
- the energy ray-curable resin composition having the above-described configuration may be cured by irradiation with energy rays to form a cured body.
- This adhesive can be used to assemble parts of electronic products such as liquid crystal panels, organic electroluminescence panels, touch panels, projectors, smartphones, mobile phones, digital cameras, digital movies, LEDs, solar cells, lithium ion batteries, CCDs, CMOS, It can be suitably used for mounting a package of a semiconductor element such as a flash memory or a DRAM. Furthermore, it is a suitable adhesive for bonding optical elements used in craft glass pedestals, plate fixing applications, two or more lenses and prisms, cameras, binoculars, microscopes, and the like.
- the mixing method of the material is not particularly limited, and examples thereof include a stirring method using a stirring force accompanying rotation of a propeller, a method using a normal disperser such as a planetary stirrer by rotation and revolution, and the like. These mixing methods are preferable because stable mixing can be performed at low cost.
- the energy ray-curable resin composition may be cured by irradiation with energy rays using the following light source.
- the light source used for curing and adhering the energy beam curable resin composition is not particularly limited, but is a halogen lamp, a metal halide lamp, a high power metal halide lamp (containing indium or the like), a low pressure mercury lamp, Examples thereof include a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a xenon lamp, a xenon excimer lamp, a xenon flash lamp, a light emitting diode (hereinafter referred to as LED), and the like.
- LED light emitting diode
- Each of the light sources has a different emission wavelength and energy distribution. Therefore, the light source is appropriately selected depending on the reaction wavelength of the photopolymerization initiator. Natural light (sunlight) can also be a reaction initiation light source.
- the light source may perform direct irradiation, condensing irradiation using a reflecting mirror, or condensing irradiation using a fiber or the like.
- a low wavelength cut filter, a heat ray cut filter, a cold mirror, or the like can also be used.
- the energy ray curable resin composition having the above-described configuration can provide an energy ray curable resin composition excellent in curability, adhesiveness, and chemical resistance and an adhesive using the energy ray curable resin composition.
- component (B) Aromatic sulfonium SbF 6 salt (“Adekaoptomer SP-170” manufactured by Adeka)
- B-2) Aromatic sulfonium PF 6 salt (“Adekaoptomer SP-150” manufactured by Adeka)
- component (C) 2-Hydroxy-2-methyl-1-phenyl-propan-1-one (“Darocur 1173” manufactured by Ciba Japan)
- C-2) 1-hydroxycyclohexyl phenyl ketone (“Irgacure 184” manufactured by Ciba Japan)
- C-3) 2-hydroxy-1- ⁇ 4- [4- (2-hydroxy-2-methyl-propionyl) -benzyl] phenyl ⁇ -2-methyl-propan-1-one (“Irga” manufactured by Ciba Japan) Cure 127 ”)
- D-1 Bisphenol A type epoxy resin (“ADEKA OPTOMER KRM-2410”, molecular weight: 400, manufactured by ADEKA)
- D-2) Bisphenol F-type epoxy resin (“ADEKA OPTOMER KRM-2490” manufactured by ADEKA Corporation, molecular weight: 380)
- D-3) Hydrogenated bisphenol A type epoxy resin (Mitsubishi Chemical Corporation “YX-8000” molecular weight: 410)
- D-4) 1,2-epoxy-4- (2-oxiranyl) cyclohexane adduct of 2,2-bis (hydroxymethyl) -1-butanol (“EHPE-3150” manufactured by Daicel Chemical Industries, Ltd., molecular weight: 2, 400)
- D-5) Epoxidized polybutadiene (1) (“BF-1000” manufactured by Adeka Corporation, molecular weight: 4,300, microstructure: 1,2-polybutadiene)
- D-6) Epoxidized polybutadiene (2) (“J)
- E-1 3,4-epoxycyclohexenylmethyl-3 ′, 4′-epoxycyclohexene carboxylate (“Celoxide 2021P” manufactured by Daicel Chemical Industries)
- E-2) Di (1-ethyl-3-oxetanyl) methyl ether (Toa Gosei Co., Ltd. “OXT221”)
- E-3) 4-hydroxybutyl methacrylate glycidyl ether (Nippon Kasei Co., Ltd. “Hite G”)
- Examples 1 to 16 Comparative Examples 1 to 6
- the raw materials of the types shown in Tables 1 to 4 were mixed at the composition ratios (units are parts by mass) shown in Tables 1 to 4 to prepare resin compositions, which were evaluated later.
- Various evaluation results are shown in Tables 1 to 4. Unless otherwise specified, the test was carried out in an environment of 23 ° C. and 50% humidity.
- a rheometer (“MCR-301” manufactured by Arton Pearl) can measure the rigidity under UV irradiation. The measurement is performed by sandwiching the prepared resin composition from both sides with a circular plate having a diameter of 8 mm, and irradiating the resin composition with UV (365 nm illuminance: 150 mW / cm 2 ) at 25 ° C. ( ⁇ 0.5 ° C.), The frequency was 10 Hz. A sample in which the storage rigidity G ′ increased to 1.00 ⁇ 10 4 or more by 200 seconds after the start of UV irradiation was regarded as “Good”, and the curability was judged to be good.
- Tensile shear bond strength measured in accordance with JIS K 6850. Specifically, the resin composition produced by using a heat-resistant glass (trade name “heat-resistant Pyrex (registered trademark) glass”, 25 mm ⁇ 25 mm ⁇ 2.0 mm) as an adherend, and forming a bonded portion with a circle having a diameter of 8 mm. Two pieces of heat-resistant glass are laminated together, using a UV irradiator, integrated light intensity of 3,000 mJ / cm 2 (365 nm illuminance: 150 mW / cm 2 , “SP-7 (mercury xenon lamp installed) by USHIO ELECTRIC CO., LTD. A test piece was prepared by curing under the conditions of a UV curing apparatus))). The produced test piece was measured for tensile shear bond strength using a tensile tester in an environment of 23 ° C. and humidity of 50%.
- a heat-resistant glass trade name “heat-resistant Pyrex (registered
- the present invention has rapid curability. Furthermore, the present invention has high adhesion and chemical resistance.
- the component (A) is 65 parts by mass or less, the effect of the present invention cannot be obtained (contrast of Example 11 and Comparative Example 6).
- the component (D) is used, the adhesive strength and the like are improved (contrast of Example 12 and Examples 1 to 3).
- the adhesive strength and the like are improved as compared with the case where the component (E) is used (contrast of Examples 4 to 11 and Examples 14 to 15).
- the present invention exhibits a transmittance of 90% or more at 405 nm and 98% or more at 550 nm, it can be seen that the present invention has excellent transparency in the visible light region.
- an energy beam curable resin composition having rapid curability and having high adhesiveness and chemical resistance, and an adhesive using the same.
- Assembling parts of electronic products such as panels, organic electroluminescence panels, touch panels, projectors, smartphones, mobile phones, digital cameras, digital movies, LEDs, solar cells, lithium ion batteries, CCD, CMOS, flash memory, DRAM, etc. It can be suitably used for mounting a semiconductor element package or the like.
- it is a suitable adhesive for bonding optical elements used in craft glass pedestals, plate fixing applications, two or more lenses and prisms, cameras, binoculars, microscopes, and the like.
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Abstract
Description
(1)(A)下記式〔1〕で表される分子内に(メタ)アクリロイル基と、脂環式エポキシ基を有する化合物
(B)光カチオン重合開始剤
(C)光ラジカル重合開始剤
を含有するエネルギー線硬化型樹脂組成物。
(2)(D)分子内に2つ以上のエポキシ基を有するオリゴマーを含有する(1)に記載のエネルギー線硬化性樹脂組成物。
(3)(D)分子内に2つ以上のエポキシ基を有するオリゴマーの分子量が、350~100,000である(2)に記載のエネルギー線硬化性樹脂組成物。
(4)(E)(A)および(B)以外のカチオン重合性単量体を含有する(1)に記載のエネルギー線硬化性樹脂組成物。
(5)(1)~(4)のいずれかに記載のエネルギー線硬化性樹脂組成物からなる接着剤。
(6)(1)~(4)のいずれかに記載のエネルギー線硬化性樹脂組成物が硬化してなる硬化体。
(7)(1)~(4)のいずれかに記載のエネルギー線硬化性樹脂組成物を用いる接合体。
本明細書において、エネルギー線硬化性樹脂組成物とは、エネルギー線を照射することによって硬化させることができる樹脂組成物を意味する。ここで、エネルギー線とは、紫外線、可視光線等に代表されるエネルギー線を意味する。
オキシアルキレン鎖としては、-R’-O-が挙げられる。ここで、R’は炭素数1~6のアルキレンをいう。オキシアルキレン鎖が-R’-O-である場合、式〔1〕は下記式〔1’〕で表される。
脂肪族系としては、エポキシ化変性ポリブタジエン、エポキシ化変性ポリイソプレン等のエポキシ化変性ポリオレフィン、ポリエチレングリコール付加体のジグリシジルエーテル、ポリプロピレングリコール付加体のジグリシジルエーテル等のポリアルキレングリコールのジグリシジルエーテル等が挙げられる。脂環系としては、2,2-ビス(ヒドロキシメチル)-1-ブタノールの1,2-エポキシ-4-(2-オキシラニル)シクロヘキサン付加物や、上述の芳香族系エポキシ樹脂の水素添加物が挙げられる。これらの中では、エポキシ化変性ポリブタジエン、エポキシ化変性ポリイソプレン、2,2-ビス(ヒドロキシメチル)-1-ブタノールの1,2-エポキシ-4-(2-オキシラニル)シクロヘキサン付加物からなる1種以上が、耐薬品性に優れる点で、好ましく、エポキシ化変性ポリブタジエンがより好ましい。
(A)成分として下記を用いた。
(A-1)3,4-エポキシシクロヘキシルメチルメタクリレート(ダイセル化学工業社「サイクロマーM-100」)
(A-2)3,4-エポキシシクロヘキシルメチルアクリレート(ダイセル化学工業社「サイクロマーA-200」)
(B-1)芳香族スルホニウムSbF6塩(アデカ社製「アデカオプトマーSP-170」)
(B-2)芳香族スルホニウムPF6塩(アデカ社製「アデカオプトマーSP-150」)
(C-1)2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(チバジャパン社製「ダロキュア1173」)
(C-2)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「イルガキュアー184」)
(C-3)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「イルガキュアー127」)
(D-1)ビスフェノールA型エポキシ樹脂(アデカ社製「アデカオプトマーKRM-2410」 分子量:400)
(D-2)ビスフェノールF型エポキシ樹脂(アデカ社製「アデカオプトマーKRM-2490」 分子量:380)
(D-3)水添ビスフェノールA型エポキシ樹脂(三菱化学社製「YX-8000」 分子量:410)
(D-4)2,2-ビス(ヒドロキシメチル)-1-ブタノールの1,2-エポキシ-4-(2-オキシラニル)シクロヘキサン付加物(ダイセル化学工業社製「EHPE-3150」 分子量:2,400)
(D-5)エポキシ化ポリブタジエン(1)(アデカ社製「BF-1000」 分子量:4,300 ミクロ構造:1,2-ポリブタジエン)
(D-6)エポキシ化ポリブタジエン(2)(日本曹達社製「JP-200」 分子量:6,400 ミクロ構造:1,2-ポリブタジエン)
(D-7)エポキシ化ポリブタジエン(3)(ダイセル化学工業社製「BP-3600」 分子量:19,300 ミクロ構造:1,2-体/1,4-cis体/1,4-trans体=40mol%/40mol%/20mol%の共重合体)
(D-8)エポキシ化ポリブタジエンとスチレンの共重合体(ダイセル化学工業社製「エポフレンドシリーズ」 分子量:20,000を超える)
(E-1)3,4-エポキシシクロヘキセニルメチル-3’,4’-エポキシシクロヘキセンカルボキシレート(ダイセル化学社製「セロキサイド2021P」)
(E-2)ジ(1-エチル-3-オキセタニル)メチルエーテル(東亜合成社「OXT221」)
(E-3)4-ヒドロキシブチルメタクリレートグリシジルエーテル(日本化成社「ヒッタイトG」)
表1~表4に示す種類の原材料を、表1~表4に示す組成割合(単位は質量部)で混合し、樹脂組成物を調製し、後述の評価を実施した。各種評価結果を表1~表4に示す。特記しない限り、23℃、湿度50%の環境下で実施した。
レオメーター(アートンパール社製「MCR-301」)ではUV照射下の剛性率を測定することができる。測定は、調製した樹脂組成物を直径8mmの円形のプレートで両面から挟み、該樹脂組成物にUV(365nmの照度:150mW/cm2)を照射しながら25℃(±0.5℃)、周波数10Hzで行った。UV照射開始後200秒までに、貯蔵剛性率G’が1.00×104以上に増加したものを「合格(Good)」とし、硬化性が良好と判断した。
ガラス試験片(商品名「耐熱パイレックス(登録商標)ガラス」、25mm×25mm×2.0mm)上に、直径8mm、厚さ80μmになるように樹脂組成物を塗布した後、2枚目のガラス試験片を張り合わせ、UV照射器(365nmの照度:150mW/cm2、ウシオ電機社製「SP-7(水銀キセノンランプ搭載UV硬化装置)」)によりUV光を照射し、2枚のガラス試験片が動かなくなる時間を測定し、固着時間とした。尚、測定時間は最大で120秒までとした。
引張剪断接着強さ:JIS K 6850に従い測定した。具体的には被着材とした耐熱ガラス(商品名「耐熱パイレックス(登録商標)ガラス」、25mm×25mm×2.0mm)を用いて、接着部位を直径8mmの円形として、作製した該樹脂組成物にて、2枚の耐熱ガラスを張り合わせ、UV照射器を使用し、積算光量3,000mJ/cm2(365nmの照度:150mW/cm2、ウシオ電機社製「SP-7(水銀キセノンランプ搭載UV硬化装置)」)の条件にて硬化させ、試験片を作製した。作製した試験片は、23℃、湿度50%の環境で、引張試験機を使用して、引張剪断接着強さを測定した。
ガラス試験片(商品名「耐熱パイレックス(登録商標)ガラス」、25mm×25mm×2.0mm)上に、直径20mm、厚さ80μmになるように樹脂組成物を塗布した後、2枚目のガラス試験片を張り合わせ、UV照射器(365nmの照度:150mW/cm2、ウシオ電機社製「SP-7(水銀キセノンランプ搭載UV硬化装置)」)によりUV光を照射し、試験片を作成した。作成した試験片の波長405nmと500nmの分光透過率を紫外-可視分光スペクトルメーター(島津製作所社製「UV-2550」)を用いて測定した。尚、リファレンスには純水を用いた。
UV照射器を使用し、4,000mJ/cm2(365nmの照度:150mW/cm2、フュージョン社製「ベルトコンベア式無電極放電ランプ(D-バルブ:メタルハライドランプ)」)の条件にて25mm×25mm×2.0mmの形状の硬化物を作製し、作製した硬化物をアセトン中に23℃の環境下で4時間浸漬し、浸漬前後での質量の変化率(%)を測定した。質量の変化率が低いもの程、耐薬品性に優れるものとして評価した。
さらに本発明は405nmで90%以上、550nmで98%以上の透過率を示すことから可視光域で優れた透明性を有することが判る。
Claims (7)
- (D)分子内に2つ以上のエポキシ基を有するオリゴマーを含有する請求項1に記載のエネルギー線硬化性樹脂組成物。
- (D)分子内に2つ以上のエポキシ基を有するオリゴマーの分子量が、350~100,000である請求項2に記載のエネルギー線硬化性樹脂組成物。
- (E)(A)および(B)以外のカチオン重合性単量体を含有する請求項1に記載のエネルギー線硬化性樹脂組成物。
- 請求項1~4のいずれか1項に記載のエネルギー線硬化性樹脂組成物からなる接着剤。
- 請求項1~4のいずれか1項に記載のエネルギー線硬化性樹脂組成物が硬化してなる硬化体。
- 請求項1~4のいずれか1項に記載のエネルギー線硬化性樹脂組成物を用いる接合体。
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| KR1020137033724A KR20140031948A (ko) | 2011-05-31 | 2012-05-23 | 에너지선 경화성 수지 조성물 |
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| JP2019077740A (ja) * | 2017-10-20 | 2019-05-23 | 日本化薬株式会社 | 樹脂組成物及び電子部品用接着剤 |
| US10808153B2 (en) | 2016-05-02 | 2020-10-20 | Tesa Se | Curable adhesive compound and reactive adhesive tapes based thereon |
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| JP7050411B2 (ja) | 2016-08-31 | 2022-04-08 | 東京応化工業株式会社 | ネガ型感光性樹脂組成物、感光性レジストフィルム、パターン形成方法、硬化膜、硬化膜の製造方法 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103562267A (zh) | 2014-02-05 |
| CN103562267B (zh) | 2018-11-06 |
| JPWO2012165259A1 (ja) | 2015-02-23 |
| TW201300484A (zh) | 2013-01-01 |
| KR20180125617A (ko) | 2018-11-23 |
| TWI553080B (zh) | 2016-10-11 |
| KR20140031948A (ko) | 2014-03-13 |
| JP5973431B2 (ja) | 2016-08-23 |
| KR102006993B1 (ko) | 2019-08-02 |
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