WO2005111168A1 - 電子部品用接着剤組成物及び接着用フィルム - Google Patents
電子部品用接着剤組成物及び接着用フィルム Download PDFInfo
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- WO2005111168A1 WO2005111168A1 PCT/JP2005/009136 JP2005009136W WO2005111168A1 WO 2005111168 A1 WO2005111168 A1 WO 2005111168A1 JP 2005009136 W JP2005009136 W JP 2005009136W WO 2005111168 A1 WO2005111168 A1 WO 2005111168A1
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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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
- C09J167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
- C09J167/07—Unsaturated polyesters having carbon-to-carbon unsaturation 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
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/04—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1515—Three-membered rings
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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
- C09J129/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
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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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
- C09J167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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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
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
- C08L2666/22—Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L93/00—Compositions of natural resins; Compositions of derivatives thereof
- C08L93/04—Rosin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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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
- C09J2301/314—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 the adhesive layer and/or the carrier being conductive
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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
- C09J2467/00—Presence of polyester
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
- H05K3/305—Affixing by adhesive
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
Definitions
- the present invention relates to an adhesive composition used for bonding electronic components, and an adhesive film formed from the adhesive composition.
- circuit boards such as a connection between a flexible printed circuit board (FPC) or a TAB and an ITO (tin indium oxide) terminal formed on a glass substrate of a liquid crystal panel, ensure circuit continuity.
- Anisotropic conductive film (ACF) is used for bonding after bonding.
- JP-A-2003-20464 and JP-A-2001-202831 describe an ACF in which conductive particles are dispersed in a heat or photocurable adhesive containing a polyester unsaturated compound as a main component. ing.
- the conductive particles to be blended in the ACF are expensive because they are obtained by applying metal plating to metal particles or plastic particles.
- NCF Non Conductive Film
- the first and second aspects are to provide an adhesive composition and an adhesive film having excellent adhesiveness and fluidity.
- the adhesive composition for bonding an electronic component according to the first aspect includes a thermosetting compound, and the thermosetting compound has a number average molecular weight of 2,000 to 6,000. It is an unsaturated compound.
- the adhesive film according to the second aspect is manufactured by forming the adhesive composition of the first aspect into a film.
- the third and fourth aspects are excellent in heat resistance of adhesive strength, resistance to wet heat, and high temperature. It is an object of the present invention to provide an adhesive composition and an adhesive film capable of maintaining a high adhesive force for a long time even under a wet condition.
- the adhesive composition for bonding an electronic component according to the third aspect includes a thermosetting resin, and further includes a polyfunctional glycidyl monomer.
- the bonding film according to the fourth aspect is manufactured by forming a film of the adhesive composition of the third aspect.
- the adhesive composition of the first aspect includes a polyester unsaturated compound having a number average molecular weight of 2,000 to 6,000.
- thermosetting adhesive containing the polyester unsaturated compound as a main component has the following advantages.
- the adhesive film of the second aspect formed by forming a film of the adhesive composition of the first aspect has excellent adhesiveness and fluidity. This film sufficiently flows between complicated and fine bumps, and ensures sufficient connection and conduction between circuits. This film firmly bonds the circuit boards together.
- This unsaturated polyester compound may be an unsaturated polyester obtained by reacting a polybasic acid with a polyhydric alcohol, and may be a (meth) ataliphatic compound that is a saturated copolymer which is soluble in a solvent. It may be a compound containing an xyl group.
- the (meth) atoxy group is an atoxy group and a Z or metaataryloxy group.
- the polyester unsaturated compound is soluble in organic solvents such as acetone, MEK, ethyl acetate, cellosolve acetate, dioxane, THF, benzene, toluene, xylene, cyclohexanone and sorbesso 100.
- organic solvents such as acetone, MEK, ethyl acetate, cellosolve acetate, dioxane, THF, benzene, toluene, xylene, cyclohexanone and sorbesso 100.
- a saturated copolymerized polyester soluble in a solvent is obtained by copolymerizing an acid and an alcohol.
- the acid preferably comprises predominantly terephthalic acid and further comprises phthalic acid, isophthalic acid, adipic acid, sebacic acid, dodecanoic acid and the like in an amount of 5 to 50 mol% of the total acid.
- Alcohol preferably comprises ethylene glycol and Z or 1, 4-butanediol, further 1 5 to 50 mole 0/0 of the amount of the total of the alcohol, 3-propanediol, 2, 2-dimethyl-1, Contains at least one of 3 propanediol, 2,2 dimethyl-1,3 propanediol, 2ethyl-2-butyl-1,3 propanediol, 1,6 hexanediol, 1,9-nonanediol.
- the positive esternole unsaturated royal conjugate has a number average molecular weight of 2,000 to 6,000, preferably ⁇ 3,000 to 5,000. Compounds with a number average molecular weight above 6,000 do not give sufficient flowability, and compounds with a number average molecular weight below 2,000 do not give sufficient adhesion.
- Unsaturated polyester obtained by introducing a (meth) atoxy group into a saturated copolymerized polyester The product is preferably produced by introducing a (meth) atoxy group into a saturated copolymerized polyester having a number average molecular weight of about 2,000-6,000.
- a polyester unsaturated compound having a number average molecular weight within the above range and a polyester unsaturated compound having a number average molecular weight outside the above range may be blended.
- the adhesive composition may contain a polyfunctional glycidyl monomer for the purpose of improving heat resistance and wet heat resistance.
- a polyfunctional glycidyl monomer is a monomer compound having an average of two or more glycidyl groups in a molecule.
- Compounds having an average of two glycidyl groups in the molecule include: aliphatic polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, tetramethylene glycol diglycidyl ether, and 1,6 hexyl.
- Compounds having an average of three glycidyl groups in the molecule include: aliphatic trimethylolpropane triglycidyl ether; heterocyclic triglycidyl isocyanurate, tridalicydyl cyanurate, and triglycidyl hydantoin.
- An aromatic triglycidyl such as para- or meta-aminophenol! /.
- Compounds having an average of four glycidyl groups in the molecule include tetraglycidyl benzylethane, sorbitol * tetraglycidyl ether, tetraglycidyl diaminophenyl methane, and tetraglycidyl 'bisaminomethylcyclohexane. It may be.
- the polyfunctional glycidyl monomer is preferably at least one of polyfunctional glycidyl ether-based compounds, which is composed of ethylene glycol'diglycidyl ether, trimethylol. Most preferred is trimethylol pulp bread 'triglycidyl ether, which may be lupropane triglycidyl ether.
- the blending amount of the polyfunctional glycidyl monomer is preferably 0.1 to 20 parts by weight, particularly preferably 1 to 10 parts by weight, based on 100 parts by weight of the unsaturated polyester compound.
- Adhesive films containing a low-molecular-weight polyester unsaturated compound having a number average molecular weight of 2,000 to 6,000 as a main component and containing a polyfunctional glycidyl monomer can be used for a long time under heat and moisture and heat resistance conditions. ⁇ Maintains high adhesive strength.
- the adhesive composition has an atalyloxy group, a methacryloyl group, or the like. It is preferable to mix at least one reactive compound (monomer) having an xy group or an epoxy group.
- the reactive compound may be an acrylic acid or methacrylic acid derivative, for example, its ester or amide, and the ester residue may be an alkyl group such as methyl, ethyl, dodecyl, stearyl, lauryl; or cyclohexyl.
- the reactive compound may be an ester with a polyfunctional alcohol such as ethylene glycol, triethylene glycol, polypropylene glycol, polyethylene glycol, trimethylonolepropane, and pentaerythritol.
- the amide may be diacetone acrylamide.
- the polyfunctional crosslinking assistant may be an acrylate or methacrylate such as trimethylolpropane, pentaerythritol, or glycerin.
- Epoxy group-containing compounds include tridalicydyl tris (2-hydroxyethyl) isocyanurate, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, aryl glycidyl ether, and 2-ethylhexyl glycidyl ether.
- the epoxy group-containing conjugate may be a polymer alloy containing an epoxy group.
- the reactive compound is preferably added in an amount of 0.5 to 80 parts by weight, more preferably 0.5 to 70 parts by weight, based on 100 parts by weight of the polyester unsaturated compound. If the amount is more than 80 parts by weight, the workability and film formability during the preparation of the adhesive may be reduced.
- the adhesive composition contains an organic peroxide as a curing agent.
- the organic peroxide is preferably decomposed at a temperature of 70 ° C. or more to generate radicals, and more preferably, has a decomposition temperature of 50 ° C. or more with a half-life of 10 hours.
- Organic peroxides include 2,5 dimethyl hexane 2,5 dihydride peroxide, 2,5 dimethyl 2,5 di (t-butylperoxy) hexine 3, g-t-butyl peroxide, t-butyl tamyl peroxide, 2,5 dimethyl-2,5 di (t-butylperoxy) hexane, dicumyl peroxide, ⁇ , ⁇ 'bis (t-butylperoxyisopropyl) benzene, n-butyl-4,4'bis
- the organic peroxide compound is preferably 0.1 to 100 parts by weight of the polyester unsaturated compound.
- the reaction initiation temperature (curing start Temperature) can be controlled. For example, it is possible to delay the reaction start temperature of the composition by reducing the amounts of the adhesive film and the organic peroxide, and as a result, to improve the fluidity of the composition at the start of the reaction.
- the adhesive composition may contain a silane coupling agent as an adhesion promoter.
- Silane coupling agents include burtriethoxysilane, burtris (methoxyethoxy) silane, y-methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ —glycidoxypropyltrisilane Ethoxysilane , — (3,4 epoxycyclohexyl) ethyltrimethoxysilane, vinyltrichlorosilane, ⁇ mercaptopropyltrimethoxysilane , ⁇ -aminopropyltriethoxysilane, N—j8— (aminoethyl) ⁇ —a It may be at least one of minopropyltrimethoxysilane.
- the amount of the silane coupling agent to be added is preferably 0.01 to 5 parts by weight based on 100 parts by weight of the unsaturated polyester compound.
- the adhesive composition may contain a hydrocarbon resin for the purpose of improving workability, bonding property, and the like.
- the hydrocarbon resin may be either a natural resin or a synthetic resin.
- rosin, rosin derivative and terpene resin are preferably used.
- rosin gum-based resin, tall oil-based resin, and wood-based resin can be used.
- rosin derivative rosin obtained by hydrogenation, heterogeneity, polymerization, esterification, and metal salting can be used.
- Terpene resins include terpene resins such as ⁇ -binene and 13-binene, and terpene phenol resins. Dammar, Koval, and shellac may be used as other natural fats and oils.
- petroleum resin As the synthetic resin, petroleum resin, phenol resin, and xylene resin are preferably used.
- Petroleum resins are aliphatic petroleum resin, aromatic petroleum resin, alicyclic petroleum resin, copolymerized petroleum resin, hydrogenated petroleum resin, pure monomer petroleum resin, cumarone indene Resins can be used.
- Alkyl phenol resin and modified phenol resin can be used as the phenol resin.
- xylene resin a xylene resin or a modified xylene resin can be used as the xylene resin.
- the amount of the hydrocarbon resin added is preferably 1 to 200 parts by weight, more preferably 1 to 100 parts by weight, based on 100 parts by weight of the unsaturated polyester compound.
- the adhesive composition may contain an antioxidant, an ultraviolet absorber, a dye, a processing aid, and the like. Yes.
- the adhesive composition preferably has a fluidity such that the viscosity at the reaction initiation temperature is less than or equal to lOOOPa's, particularly 50 to 800Pa's, as determined by shear-type viscoelasticity measurement using a parallel plate. Have.
- the adhesive film is manufactured by kneading the adhesive composition with an extruder, a roll, or the like, and then forming the film into a predetermined shape by a film forming method such as calendar roll, T-die extrusion, or inflation. You.
- the adhesive film can also be formed by dissolving or dispersing the adhesive composition in a solvent, applying the solution to the surface of the separator, and evaporating the solvent.
- the film may be embossed for the purpose of preventing blocking, facilitating pressure bonding with the adherend, and the like.
- the bonding film can be bonded to the adherend by a method such as a bonding method using a hot press, a direct laminating method using an extruder or a calender, or a thermocompression bonding method using a film laminator.
- the adhesive is preferably cured usually at 70 to 170 ° C, particularly preferably 70 to 150 ° C, preferably for 10 seconds to 120 minutes, particularly preferably for 20 seconds to 60 minutes.
- the pressure during bonding is preferably 1 to 4 MPa, particularly preferably 2 to 3 MPa.
- the thickness is preferably 10 ⁇ or less, particularly 5 ⁇ or less in the film thickness direction.
- the resistance in the plane direction is preferably 10 6 ⁇ or more, particularly preferably 10 9 ⁇ or more.
- the adhesive film on which the composition is formed can be used for various terminals such as connection between FPC or TAB and an ITO terminal on a glass substrate of a liquid crystal panel, connection between metal electrodes on an FPC substrate, and the like. Used for connection.
- the adhesive composition may include conductive particles.
- the conductive particles may be a metal such as copper, silver, or nickel / metal alloy powder, a resin or ceramic powder coated with such a metal or alloy, or the like. Particles can be in any shape such as flakes, dendrites, granules, pellets, etc. Can take shape.
- the conductive particles preferably have a modulus of 1. OX 10 7 ⁇ 1. OX 10 1G Pa.
- An adhesive film containing conductive particles having an elastic modulus in this range can suppress spring knock after bonding.
- the conductive particles those obtained by coating the surfaces of synthetic resin particles with the above-described metal or alloy are preferably used.
- the compounding amount of the conductive particles is preferably 0.1 to 15% by volume in the adhesive composition.
- the average particle size of the conductive particles is preferably from 0.1 to: LOO m.
- each of the polyester resins shown in Table 1 was dissolved in a mixed solvent of toluene and methyl ethyl ketone to prepare a 40% by weight solution.
- the components shown in Table 1 were mixed in the amount shown in Table 1 with 100 parts by weight of each polyester resin, and the mixture was applied on a poly (ethylene terephthalate) separator using a bar coater to obtain a width of 2 mm and a thickness of 20 ⁇ m. Was obtained.
- the obtained film was disposed between the non-adhesive type two-layer flexible printed circuit board and the transparent electrode glass, the separator was peeled off, and the film was positioned by a monitor. Next, the substrate and the glass were heated and pressed at 130 ° C. for 30 seconds at 2 MPa to obtain a sample.
- the adhesive force was measured by a 90 ° peel test (50 mmZmin) using a tensile tester, and the connection resistance was measured by a digital multimeter, and the result was set to 3 ⁇ 4kl.
- the number average molecular weight was measured by GPC measurement and determined by using a polystyrene calibration curve. The same applies to the following examples and comparative examples.
- each of the polyester resins shown in Table 2 was dissolved in a mixed solvent of toluene and methyl ethyl ketone to prepare a 35% by weight solution.
- the components shown in Table 2 were mixed with 100 parts by weight of each polyester resin in the amounts shown in Table 2, and the mixture was applied to an ethylene polyterephthalate separator using a bar coater to obtain a 2 mm wide, 25 ⁇ m thick plate. A film was obtained.
- the obtained film was disposed between the three-layer flexible printed circuit board and the transparent electrode glass, the separator was peeled off, and the film was positioned by a monitor. Next, the substrate and the glass
- a sample was obtained by thermocompression bonding at 2 MPa at 15 ° C. for 15 seconds.
- the adhesive force was measured by a 90 ° peel test (50 mmZmin) using a tensile tester, and the connection resistance was measured by a digital multimeter.
- polyester resins shown in Table 3 were each dissolved in a mixed solvent of toluene and methyl ethyl ketone to prepare a 40% by weight solution, and the components shown in Table 3 for 100 parts by weight of each polyester resin are shown in Table 3.
- the mixture was mixed in the amount shown, and the mixture was applied on a polyethylene terephthalate ethylene film as a separator by a bar coater to obtain a film having a width of 2 mm and a thickness of 20 ⁇ m.
- the obtained film was used for bonding a glass substrate and a polyimide substrate, the separator was peeled off, the film was positioned on a monitor, and heated and pressed at 170 ° C. for 15 seconds at 2 MPa.
- the obtained sample was left under normal conditions (room temperature) for 24 hours immediately after the heat compression bonding (initial stage), left under high heat conditions (85 ° C) for 24 hours, and then subjected to high humidity heat conditions ( After standing at 60%, 95% RH) for 24 hours, the adhesive strength was measured by a 90 ° peel test (50 mmZmin) using a tensile tester, and the results are shown in Table 3.
- Methacrylic D-xy group-introduced compound (number average molecular weight 3000)
- the non-conductive film using the low molecular weight polyester unsaturated compound having a number average molecular weight of 2,000 to 6,000 has a problem in the durability of the adhesive force at room temperature. Although there is no major problem, it is inferior in heat resistance and wet heat resistance.
- a nonconductive film in which a polyfunctional glycidyl monomer is blended with the unsaturated polyester having a low molecular weight is excellent in heat resistance of adhesive strength and durability in wet heat.
- a 35% by weight solution of each of the polyester resins shown in Table 4 in a mixed solvent of toluene and methyl ethyl ketone was prepared, and the components shown in Table 4 were prepared for 100 parts by weight of each polyester resin.
- the components were mixed in the amounts shown in Table 1 and applied to a polyethylene ethylene terephthalate film as a separator by a bar coater to obtain a film having a width of 2 mm and a thickness of 30 ⁇ m.
- the resulting film was used for bonding between the non-adhesive type two-layer flexible printed circuit board and the transparent electrode glass.
- the separator was peeled off, positioned on a monitor, and heated and pressed at 170 ° C for 15 seconds at 2 MPa. did.
- Acrylic ⁇ -containing compound * 5 5 5 5 5 5 5 5 parts Methacrylic-containing compound * 6 3 3 3 3 3 3 Hydrocarbon resin * 7 1 1 1 1 1 1 Silane cuff 1 "Link * 8 1 1 1 1 1 1 Conductive Particles * 9 4 4 4 4 4
- the anisotropic conductive film of Comparative Example 6 containing no polyfunctional glycidyl monomer had no significant problem in the durability of the adhesive strength at room temperature, but had heat resistance and heat and humidity resistance. Poor durability.
- films 9 to 12 containing a polyfunctional glycidyl monomer are excellent in heat resistance of adhesive strength and durability against wet heat.
- the adhesive composition and film for electronic parts of the third and fourth aspects contain a thermosetting resin and a polyfunctional glycidyl monomer. This adhesive can be used under heat and moisture resistance High adhesive strength can be maintained for a long time.
- the thermosetting resin is a polyacetal Louis Dani resin obtained by acetalizing polybutyl alcohol and Z or a modified polyacetal obtained by introducing an aliphatic unsaturated group into a side chain of this polyacetalized dani resin. It may be a dungeon fat.
- the thermosetting resin may be a polyester unsaturated compound soluble in a solvent.
- the polyacetal resin preferably contains at least 30 mol% of an acetal group. If the proportion of the acetal group is less than 30 mol%, the moisture resistance may deteriorate.
- the polyacetalized resin include polybutyl formal, polyvinyl butyral, and the like, and polybutyl butyral is particularly preferable.
- the polyacetaly dang resin “Denri PVB3000-1”, “Denri PVB2000-L” and the like manufactured by Denki Kagaku can be used.
- modified polyacetal resin modified polyvinyl butyral is preferable.
- the polyvinyl butyral resin is composed of a vinyl butyral unit A, a butyl alcohol unit B and a butyl acetate unit C as shown in the following formula (1).
- the aliphatic unsaturated group may be introduced into any of the side chains of units A, B and C, but is preferably introduced into the side chain of polybutyl alcohol unit B.
- the aliphatic unsaturated group is preferably a vinyl group, an aryl group, a methacryl group, an acryl group or the like.
- the aliphatic unsaturated group with respect to the side chain of the polyvinyl alcohol unit B is preferably introduced by acid-modifying the side chain hydroxyl group.
- the acid used for the acid modification may be acrylic acid, methacrylic acid, stearyl acid, maleic acid, or phthalic acid.
- An aliphatic unsaturated bond is introduced as shown in the following formula (2).
- R represents a hydrogen atom or an alkyl group
- R ′ represents an aliphatic unsaturated group such as an alkenyl group or a group containing the same.
- Bulle alcohol units B is preferably 3 to 70 mole 0/0, and more preferable properly 5 to 50 mole 0/0, more preferably from 5 to 30 mole 0/0, 3 mol 0/0 less than the acid denaturation of reactivity Akugu 70 mol% more than the heat resistance, occurs when moisture resistance is poor.
- thermosetting resins are soluble in organic solvents such as acetone, MEK, toluene, xylene, ethyl acetate, cellosolve acetate, dioxane, THF, benzene, cyclohexanone, and sorbesso 100.
- It may be an unsaturated polyester unsaturated compound.
- the unsaturated polyester compound may be an unsaturated polyester obtained by reacting a polybasic acid with a polyhydric alcohol.
- the unsaturated polyester compound may be a compound obtained by introducing a (meth) atoxy group into a saturated copolymer polyester soluble in a solvent.
- the (meth) acryloxy group is an atari oxy group and a Z or a meta acryloxy group.
- the saturated copolymerized polyester soluble in a solvent is obtained by copolymerizing an acid and an alcohol.
- the acid preferably comprises predominantly terephthalic acid and further comprises phthalic acid, isophthalic acid, adipic acid, sebacic acid, dodecanoic acid and the like in an amount of 5 to 50 mol% of the total acid.
- the alcohol preferably comprises ethylene glycol and Z or 1,4 butanediol, Furthermore, 1, 3-propanediol 5-50 mole 0/0 of the amount of the total of the alcohol, 2, 2-dimethyl-1, 3-propanediol, 2, 2 Jechiru 1, 3 Puropanjio Le, 2 Echiru 2-butyl-1, 3 Contains at least one of propanediol, 1,6-hexanediol, 1,9-nonanediol and the like.
- the (meth) atari-xy group is introduced into the saturated copolymerized polyester by the following method (1), (2) or (3).
- thermosetting resin contains an organic peroxide as a curing agent.
- Organic peroxide decomposes at temperatures above 70 ° C to generate radicals.
- the decomposition temperature of the organic peroxidation product preferably has a half-life of 10 hours and a decomposition temperature of 50 ° C. or higher.
- Organic peroxides include 2,5 dimethyl-2,5 di (benzoylperoxy) hexane, 2,5 dihydride peroxide, and 2,5 dimethyl-2,5 di (t-butylperoxy) hexine.
- the organic peroxide is preferably incorporated in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the thermosetting resin.
- the adhesive composition contains a polyfunctional glycidyl monomer in order to improve the heat resistance and the wet heat resistance of the adhesive force.
- the polyfunctional glycidyl monomer has an average of two or more glycidyl groups in the molecule.
- Compounds having an average of two glycidyl groups in the molecule include: aliphatic polyethylene glycol 'diglycidyl ether, polypropylene glycol diglycidyl ether, tetramethylene glycol diglycidyl ether, and 1,6 hexyl.
- Compounds having an average of three glycidyl groups in the molecule include: aliphatic trimethylolpropane triglycidyl ether; heterocyclic triglycidyl isocyanurate, tridalicydyl cyanurate, and triglycidyl hydantoin.
- An aromatic triglycidyl such as para- or meta-aminophenol! /.
- Compounds having an average of four glycidyl groups in the molecule include tetraglycidyl-benzylethane, sorbitol * tetraglycidyl ether, tetraglycidyl-diaminophenylmethane, tetraglycidyl'bisaminomethylcyclohexane and the like. There may be.
- the polyfunctional glycidyl monomer is preferably at least one kind of polyfunctional glycidyl ether-based compound, which is most preferably ethylene glycol'diglycidyl ether, trimethylolpropane, triglycidyl ether or the like. Is trimethylol pulp bread 'triglycidyl ether.
- the blending amount of the polyfunctional glycidyl monomer is preferably 0.1 to 20 parts by weight, particularly preferably 1 to LO parts by weight based on 100 parts by weight of the thermosetting resin.
- At least one of a melamine-based resin and an alkyd-based resin may be blended for improving the adhesiveness.
- the melamine-based resin may be at least one of butylated melamine resin such as melamine resin, isobutylated melamine resin, and n-butylated melamine resin, and methylated melamine resin.
- the melamine resin is preferably blended in an amount of 1 to 200 parts by weight, particularly 1 to 100 parts by weight of LOO per 100 parts by weight of the thermosetting resin.
- the alkyd resin is preferably a pure alkyd resin or a modified alkyd resin, which is good in terms of slippage, oil-free, or short or medium oily.
- the alkyd resin is preferably incorporated in an amount of 0.01 to LO parts by weight, particularly 0.5 to 5 parts by weight, based on 100 parts by weight of the thermosetting resin.
- the adhesive composition may contain a urea-based resin in order to prevent air bubbles from being mixed into the adhesive layer and to secure higher conductivity and adhesive strength.
- the urea-based resin may be a urea resin, a petri-dilution urea-based resin, or the like.
- a phenol resin, a butyl resin, an epamine resin, an epoxy resin and the like may be blended.
- the resin for preventing air bubbles such as urea-based resin is 0.01 to 10 parts by weight, particularly 0.5 to 5 parts by weight, based on 100 parts by weight of the adhesive resin component. Is preferred.
- the adhesive composition has at least an attaryloxy group, a methacryloxy group, or an epoxy group. It is preferable to mix one kind of reactive compound (monomer). Reactivity
- the compound may be an acrylic or methacrylic acid derivative, such as its esters and amides.
- Ester residues include alkyl groups such as methyl, ethyl, dodecyl, stearyl, and lauryl, as well as cyclohexyl, tetrahydrofurfuryl, aminoethyl, 2-hydroxyhexyl, 3-hydroxypropyl, and 3-chloro- 2 It may be a hydroxypropyl group or the like.
- the reactive compound may be an ester with a polyfunctional alcohol such as ethylene glycol, triethylene glycol, polypropylene glycol, polyethylene glycol, trimethylolpropane, and pentaerythritol.
- the amide may be diacetone acrylamide.
- Examples of the polyfunctional crosslinking assistant include acrylic acid or methacrylic acid esters such as trimethylolpropane, pentaerythritol and glycerin.
- Epoxy group-containing compounds include triglycidyl tris (2-hydroxyethyl) isocyanurate, neopentyl glyco-yl diglycidyl ether, 1,6-hexanediol diglycidyl ether, aryl glycidyl ether, 2-ethylhexyl glycidyl ether, Phenylglycidyl ether, phenol (EO) glycidyl ether, p-t-butylphenylglycidyl
- the epoxy group-containing compound may be a polymer alloy containing an epoxy group.
- the reactive compound is used in an amount of 0.5 to 80 parts by weight, preferably 0.5 to 70 parts by weight, based on 100 parts by weight of the thermosetting resin. If the amount is more than 80 parts by weight, the workability and the film forming property in preparing the adhesive may be reduced.
- silane coupling agent As an adhesion promoter to the adhesive composition.
- examples of the silane coupling agent include burtriethoxysilane, burtris (methoxyethoxy) silane, ⁇ -methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyl Triethoxysilane, 13- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, butyltrichlorosilane, ⁇ —mercaptopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ — ⁇ — (aminoethyl) -It may be at least one kind such as ⁇ -aminopropyltrimethoxysilane.
- the adhesive composition may contain a hydrocarbon resin for the purpose of improving workability, bonding property, and the like.
- the hydrocarbon resin to be added may be either a natural resin or a synthetic resin.
- rosin, rosin derivative and terpene resin are preferably used.
- rosin gum resin, tall oil resin, and wood resin can be used.
- rosin derivative rosin which has been hydrogenated, heterogenized, polymerized, esterified, or metallated can be used.
- terpene resins terpene phenol resins can be used in addition to terpene resins such as ⁇ -binene and 13-binene.
- Dammar, conore, and shellac may be used as other natural fats and oils.
- synthetic resin petroleum resin, phenol resin, and xylene resin are preferably used.
- petroleum resins aliphatic petroleum resin, aromatic petroleum resin, alicyclic petroleum resin, copolymer petroleum resin, hydrogenated petroleum resin, pure monomer petroleum resin, cumarone Indene resin can be used.
- Alkyl phenol resins and modified phenol resins can be used as phenol resins.
- xylene-based resin xylene resin and modified xylene resin can be used as the xylene-based resin.
- the addition amount of the hydrocarbon resin is preferably 1 to 200 parts by weight, more preferably 5 to 150 parts by weight, per 100 parts by weight of the thermosetting resin.
- the adhesive composition may contain conductive particles.
- the conductive particles may be a metal such as copper, silver, or nickel / metal alloy powder, a resin or ceramic powder coated with such a metal or alloy, or the like.
- the particles can have any shape such as flakes, dendrites, granules, pellets and the like.
- conductive particles is preferred elastic modulus is 1. OX 10 7 ⁇ 1. OX lC ⁇ Pa.
- the bonding film containing the conductive particles having the elastic modulus in this range suppresses the springback after bonding.
- the conductive particles those obtained by coating the surfaces of synthetic resin particles with the above-described metal or alloy are preferably used.
- the compounding amount of the conductive particles is preferably 0.1 to 15% by volume in the adhesive resin composition.
- the average particle size of the conductive particles is preferably from 0.1 to: LOO / zm.
- the adhesive composition includes an antioxidant, an ultraviolet absorber, a dye, A processing aid or the like may be used in a range that does not interfere with the purpose of the present invention.
- the adhesive composition containing the conductive particles preferably has a melt index (MFR) of 1 to 3000, particularly 1 to 1000, especially 1 to 800, and has a fluidity at 70 ° C of 10 to 10. It is preferable that the ratio be 5 Pa's or less. Therefore, it is desirable to select a composition so as to obtain such MFR and fluidity.
- MFR melt index
- the film is produced by kneading the adhesive composition with an extruder, a roll, or the like, and then forming the film into a predetermined shape by a film forming method such as calendar roll, T-die extrusion, or inflation.
- the adhesive film can also be formed by dissolving or dispersing the adhesive composition in a solvent, applying the solution on the surface of the separator, and evaporating the solvent.
- an embossing process may be performed for the purpose of preventing blocking, facilitating pressure bonding with an adherend, and the like.
- the adhesive composition is preferably cured at 70 to 170 ° C, particularly preferably 70 to 150 ° C, preferably 10 seconds to 120 minutes, and particularly preferably 20 seconds to 60 minutes. .
- a pressure of l to 4 MPa, particularly about 2 to 3 MPa may be applied in the bonding direction.
- the adhesive film contains conductive particles, it may be 10 ⁇ or less, particularly 5 ⁇ or less, in the film thickness direction.
- the resistance in the plane direction is preferably 10 6 ⁇ or more, particularly preferably 10 9 ⁇ or more.
- the film obtained by forming the adhesive composition can also be used for a force suitable for connecting FPC or TAB to an ITO terminal on a glass substrate of a liquid crystal panel, and for other uses.
- a cross-linked structure is formed when the adhesive composition is cured, and high adhesiveness, heat resistance with excellent adhesive strength, and wet heat resistance are obtained.
- a 25% by weight solution of polybutyral ("Denki PVB3000-1", manufactured by Denki Kagaku Kogyo KK) in toluene was prepared. Based on 100 parts by weight of polybutyral as base resin The components shown in Table 5 were mixed in the amounts shown in Table 5 and applied to a separator made of poly (ethylene terephthalate) using a bar coater. By evaporating the toluene, a finolem 5 mm wide and 15 m thick was obtained.
- the separator was peeled off, positioned by a monitor, and heated and pressed at 170 ° C for 15 seconds at 3 MPa.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Adhesive Tapes (AREA)
- Conductive Materials (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/569,265 US20080230749A1 (en) | 2004-05-19 | 2005-05-19 | Adhesive Agent Composition and Adhesive Film For Electronic Component |
EP05741407A EP1760133B1 (en) | 2004-05-19 | 2005-05-19 | Adhesive agent composition and adhesive film for electronic component |
JP2006513630A JP5056010B2 (ja) | 2004-05-19 | 2005-05-19 | 電子部品用接着剤組成物及び接着用フィルム |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004149372 | 2004-05-19 | ||
JP2004-149372 | 2004-05-19 | ||
JP2004360078 | 2004-12-13 | ||
JP2004-360079 | 2004-12-13 | ||
JP2004-360078 | 2004-12-13 | ||
JP2004360079 | 2004-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005111168A1 true WO2005111168A1 (ja) | 2005-11-24 |
Family
ID=35394149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009136 WO2005111168A1 (ja) | 2004-05-19 | 2005-05-19 | 電子部品用接着剤組成物及び接着用フィルム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080230749A1 (ja) |
EP (1) | EP1760133B1 (ja) |
JP (1) | JP5056010B2 (ja) |
WO (1) | WO2005111168A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007106882A (ja) * | 2005-10-13 | 2007-04-26 | Bridgestone Corp | 電子部品用熱硬化性接着剤組成物 |
JP2007317563A (ja) * | 2006-05-26 | 2007-12-06 | Sumitomo Electric Ind Ltd | 回路接続用接着剤 |
JP2009517889A (ja) * | 2005-11-29 | 2009-04-30 | アムフェノール・コーポレーション | 鉛(pb)無しの電子構成要素の装着 |
JP2016035044A (ja) * | 2014-06-03 | 2016-03-17 | 太陽インキ製造株式会社 | 導電性接着剤および電子部品 |
CN106433539A (zh) * | 2016-08-27 | 2017-02-22 | 安徽天瞳智能科技有限公司 | 一种耐高温胶粘剂的制备方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008235556A (ja) * | 2007-03-20 | 2008-10-02 | Sumitomo Electric Ind Ltd | 配線板モジュール及び該配線板モジュールの製造方法 |
WO2018042701A1 (ja) * | 2016-08-30 | 2018-03-08 | 日立化成株式会社 | 接着剤組成物 |
CN107400464A (zh) * | 2017-07-18 | 2017-11-28 | 南京工业职业技术学院 | 一种医用丙烯酸酯导电胶及其制备方法 |
US11355469B2 (en) | 2017-12-28 | 2022-06-07 | Showa Denko Materials Co., Ltd. | Connection structure and method for producing same |
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- 2005-05-19 JP JP2006513630A patent/JP5056010B2/ja not_active Expired - Fee Related
- 2005-05-19 EP EP05741407A patent/EP1760133B1/en not_active Expired - Fee Related
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JP2007106882A (ja) * | 2005-10-13 | 2007-04-26 | Bridgestone Corp | 電子部品用熱硬化性接着剤組成物 |
JP2009517889A (ja) * | 2005-11-29 | 2009-04-30 | アムフェノール・コーポレーション | 鉛(pb)無しの電子構成要素の装着 |
JP2007317563A (ja) * | 2006-05-26 | 2007-12-06 | Sumitomo Electric Ind Ltd | 回路接続用接着剤 |
JP2016035044A (ja) * | 2014-06-03 | 2016-03-17 | 太陽インキ製造株式会社 | 導電性接着剤および電子部品 |
CN106433539A (zh) * | 2016-08-27 | 2017-02-22 | 安徽天瞳智能科技有限公司 | 一种耐高温胶粘剂的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
JP5056010B2 (ja) | 2012-10-24 |
EP1760133B1 (en) | 2011-09-28 |
US20080230749A1 (en) | 2008-09-25 |
JPWO2005111168A1 (ja) | 2008-03-27 |
EP1760133A1 (en) | 2007-03-07 |
EP1760133A4 (en) | 2007-08-08 |
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