WO2020071154A1 - 樹脂組成物、フィルム、積層板および半導体装置 - Google Patents
樹脂組成物、フィルム、積層板および半導体装置Info
- Publication number
- WO2020071154A1 WO2020071154A1 PCT/JP2019/036964 JP2019036964W WO2020071154A1 WO 2020071154 A1 WO2020071154 A1 WO 2020071154A1 JP 2019036964 W JP2019036964 W JP 2019036964W WO 2020071154 A1 WO2020071154 A1 WO 2020071154A1
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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
- C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L35/06—Copolymers with vinyl aromatic monomers
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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
- C08L13/00—Compositions of rubbers containing carboxyl groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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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
- C08G59/40—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 curing agents used
- C08G59/50—Amines
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/04—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to rubbers
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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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0373—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
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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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0346—Organic insulating material consisting of one material containing N
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/0209—Inorganic, non-metallic particles
Definitions
- One embodiment of the present disclosure relates to a resin composition. More specifically, one embodiment of the present disclosure relates to a resin composition suitable for an adhesive film for electric and electronic applications, and a coverlay film for a printed wiring board. One embodiment of the present disclosure relates to a film, a laminate, and a semiconductor device using the resin composition.
- An interlayer adhesive used for a multilayer printed wiring board and an adhesive film used as a surface protective film (that is, a coverlay film) of a printed wiring board also have excellent electrical characteristics (low dielectric constant ( ⁇ ) And low dielectric loss tangent (tan ⁇ )).
- the adhesive film for the above uses is required to have excellent adhesive strength to the copper foil contained in the wiring of the flexible printed wiring board (FPC) and the polyimide film used as the substrate material of the FPC.
- the laminate with an adhesive layer disclosed in Patent Document 1 has high adhesiveness to a substrate film made of a polyimide resin or the like and a copper foil, and has excellent electrical properties in an extremely short microwave band (1 to 3 GHz). Has characteristics.
- This resin composition has excellent adhesive strength to a copper foil and a polyimide film. Furthermore, this resin composition shows excellent electric characteristics in a high frequency region of a frequency of 1 GHz or more. Specifically, this resin composition exhibits a low dielectric constant ( ⁇ ) and a low dielectric loss tangent (tan ⁇ ) in a frequency range of 1 to 80 GHz. Further, this resin composition has heat resistance enough to withstand solder mounting.
- the resin composition (the present fat composition) provided according to one embodiment of the present disclosure includes: (A) a modified elastomer having an acid anhydride group, (B) a solvent-soluble polyimide resin, and (C) It contains an epoxy resin, and the content of (B) is 5 to 20% by mass based on 100% by mass of the total of the resin components.
- (A) is a maleic anhydride-modified styrene thermoplastic elastomer having a styrene content of 25 to 35%.
- the resin composition is (D) It may further contain a hydrogenated styrene-based thermoplastic elastomer other than the above (A).
- a film including the present resin composition is provided.
- a laminate using the present resin composition is provided.
- the resin composition has excellent adhesive strength to both the roughened surface and the glossy surface of the copper foil forming the wiring of the FPC. Further, the present resin composition has excellent adhesive strength to a polyimide film used as a substrate material for FPC. Further, the present resin composition has excellent electric characteristics in a high frequency range. Specifically, the resin composition exhibits a low dielectric constant ( ⁇ ) and a low dielectric loss tangent (tan ⁇ ) in a frequency range of 1 to 80 GHz. In addition, the resin composition has heat resistance enough to withstand solder mounting. Therefore, the present resin composition is suitable for an adhesive film for electric and electronic applications, and a coverlay film for a printed wiring board. Further, the resin composition is suitable for interlayer adhesion between substrates of a semiconductor device.
- the resin composition according to an embodiment of the present disclosure includes (A) a modified elastomer having an acid anhydride group, (B) a solvent-soluble polyimide resin, and (C) an epoxy resin.
- A a modified elastomer having an acid anhydride group
- B a solvent-soluble polyimide resin
- C an epoxy resin.
- the modified elastomer having an acid anhydride group of the component (A) can be produced, for example, by reacting an acid anhydride and a peroxide with an elastomer.
- the modified elastomer having an acid anhydride group include a maleic anhydride-modified SEBS (polystyrene / polyethylene / polybutylene / polystyrene) copolymer, a maleic anhydride-modified SBS (polystyrene / polybutadiene / polystyrene) copolymer, and an anhydride.
- Maleic acid-modified SEPS polystyrene / polyethylene / polypropylene / polystyrene copolymer
- maleic anhydride-modified SEP polystyrene / polyethylene / polypropylene copolymer
- maleic anhydride-modified SIS polystyrene / polyisoprene / polystyrene
- Maleic anhydride-modified ethylene-propylene copolymer maleic anhydride-modified ethylene-butene copolymer
- the component (A) is more preferably a maleic anhydride-modified styrene-based thermoplastic elastomer. It is particularly preferable that the maleic anhydride-modified styrene-based thermoplastic elastomer is maleic anhydride-modified SEBS.
- the acid value of the component is preferably 0.1mgCH 3 ONa / g or more, more preferably 1mgCH 3 ONa / g or more.
- the acid value is 0.1 mgCH 3 ONa / g or more, the curing of the resin composition is sufficient, and good adhesiveness and heat resistance can be obtained.
- the styrene content of the maleic anhydride-modified styrene-based thermoplastic elastomer is preferably 25 to 35%.
- the amount of styrene is 25% or more, a film produced using the present resin composition is unlikely to be too soft. Therefore, there is little possibility that workability will deteriorate.
- problems such as tackiness hardly occur in a film produced using the present resin composition.
- the present resin composition has advantages such as excellent adhesive strength with a copper foil and a polyimide film.
- the styrene content of the maleic anhydride-modified styrene-based thermoplastic elastomer is more preferably 27 to 33%.
- the content of the component (A) is preferably 40 to 92% by mass based on 100% by mass of the total of the resin components.
- the content of the component (A) is 40% by mass or more, the present resin composition has excellent adhesion to a polyimide film.
- the content of the component (A) is 92% by mass or less, the present resin composition relatively contains an appropriate amount of another component (thermosetting component). Therefore, there is little possibility that the solder heat resistance of the present resin composition is deteriorated.
- the content of the component (A) is more preferably from 70 to 90% by mass, and even more preferably from 75 to 85% by mass, based on 100% by mass of the total of the resin components.
- solvent-soluble polyimide resin The solvent-soluble polyimide of the component (B) may be soluble in a solvent, and the structure and the like are not particularly limited. Soluble means that at least 20% by mass is dissolved at 23 ° C. in at least one of the following solvents. Solvents include toluene and xylene as hydrocarbon solvents, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone and cyclopentanone as ketone solvents, 1,4-dioxane, tetrahydrofuran and diglyme as ether solvents, and methyl as glycol ether solvents.
- Cellosolve ethyl cellosolve, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether and diethylene glycol methyl ethyl ether, ethyl acetate, butyl acetate, ethyl lactate and gamma butyrolactone as ester solvents, benzyl alcohol, N-methylpyrrolidone , N, N-dimethylformamide and N, N-dimethylacetamide.
- the solvent-soluble polyimide of the component (B) can be obtained by reacting a diamine and a tetracarboxylic acid component at a temperature of 130 ° C. or higher and performing an imidization reaction.
- the solvent-soluble polyimide of the component (A) is preferably a polyimide resin obtained by reacting a tetracarboxylic acid component with a dimer diamine. This polyimide resin is excellent in adhesiveness, flexibility, toughness and heat resistance.
- a part of the dimer diamine may be replaced with a silicone diamine.
- tetracarboxylic acid component used here examples include pyromellitic dianhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride, 3,3 ′, 4,4′-biphenyl sulfone Tetracarboxylic dianhydride, 1,4,5,8-naphthalenetetracarboxylic dianhydride, 2,3,6,7-naphthalenetetracarboxylic dianhydride, 3,3 ', 4,4'-biphenyl Ether tetracarboxylic dianhydride, 3,3 ′, 4,4′-dimethyldiphenylsilanetetracarboxylic dianhydride, 3,3 ′, 4,4′-tetraphenylsilanetetracarboxylic dianhydride, 1, 2,3,4-furantetracarboxylic dianhydride, 4,4'-bis (3,4-dicarboxyphenoxy) diphenyl sulf
- dimer diamine examples include Versamine 551 (trade name, manufactured by BASF Japan Ltd .; 3,4-bis (1-aminoheptyl) -6-hexyl-5- (1-octenyl) cyclohexene), and versamine 552 (trade name, manufactured by Cognix Japan Co., Ltd .; hydrogenated product of Versamine 551), PRIAMINE 1075, and PRIAMINE 1074 (all trade names, manufactured by Croda Japan KK).
- Versamine 551 trade name, manufactured by BASF Japan Ltd .
- versamine 552 trade name, manufactured by Cognix Japan Co., Ltd .
- hydrogenated product of Versamine 551 PRIAMINE 1075
- PRIAMINE 1074 all trade names, manufactured by Croda Japan KK.
- the solvent-soluble polyimide resin of the component (B) has a structure in which a tetracarboxylic acid component and a dimer diamine react and are polymerized by an imide bond.
- Dimer acid which is a raw material of dimer diamine, is obtained by dimerizing an unsaturated fatty acid having 18 carbon atoms (a mixture of oleic acid, linoleic acid, linolenic acid, and the like). Upon dimerization, a linear chain, an alicyclic ring, an alicyclic ring having a double bond, an aromatic ring and the like are produced depending on the reaction probability.
- the above dimer acids are a mixture of these. Dimer diamine is obtained by aminating this as it is.
- the molecular structure of the solvent-soluble polyimide resin of the component (B) obtained by polymerizing the tetracarboxylic acid component and the dimer diamine has a complex structure in which the molecules of the dimer acid, which is a mixture, are irregularly bonded. And it is difficult to identify.
- Examples of the molecular structure that can be inferred include those represented by the following chemical structural formulas. The molecular structure is considered to be a mixture of these (these structural formulas are merely examples; the molecular structure is not limited to these). In the above chemical formula, n represents an integer, and R 1 , R 2 , R 3 and R 4 represent an organic group.
- n 1 and n 3 are integers of 0 to 18, and n 2 is 0 or an integer of 1 or 2.
- the total number of carbon atoms in the dimer diamine component is 36.
- the number average molecular weight (Mn) is preferably from 10,000 to 20,000, more preferably from 12,000 to 18,000. The number average molecular weight can be determined by GPC measurement.
- the content of the component (B) is 5 to 20% by mass based on 100% by mass of the total of the resin components. If the content of the component (B) is more than 20% by mass, the compatibility between the component (B) and the component (A) becomes poor. In addition, the high-frequency characteristics of the film produced using the resin composition, that is, the dielectric constant ( ⁇ ) and the dielectric loss tangent (tan ⁇ ) in the frequency range of 1 to 80 GHz tend to deteriorate. When the content of the component (B) is less than 5%, the adhesiveness to the copper foil and the adhesiveness to the polyimide film in the present resin composition may be insufficient. Furthermore, the solder heat resistance of the present resin composition may be insufficient. The content of the component (B) is preferably from 10 to 20% by mass, more preferably from 12 to 18% by mass, based on 100% by mass of the total of the resin components.
- Epoxy resin As the epoxy resin of the component (C), for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolak type epoxy resin, alicyclic epoxy resin, siloxane type epoxy resin, biphenyl type epoxy resin Glycidyl ester type epoxy resin, glycidylamine type epoxy resin, hydantoin type epoxy resin, epoxy resin having a naphthalene skeleton, and epoxy resin having an anthracene skeleton. In the present resin composition, the compounds exemplified here may be used alone or as a mixture of two or more.
- the epoxy equivalent of the component (C) is preferably from 90 to 350, and more preferably from 100 to 300.
- the content of the component (C) is preferably 1 to 10% by mass, more preferably 3 to 10% by mass, and more preferably 3 to 8% by mass, based on 100% by mass of the total of the resin components. Is particularly preferred.
- the content of the component (C) is 3% by mass or more, the present resin composition has sufficient heat resistance to solder mounting.
- the component (C) leads to an increase in the dielectric loss tangent (tan ⁇ ) in the frequency range of 1 to 80 GHz. Therefore, the content of the component (C) is preferably 10% by mass or less.
- the present resin composition may further contain the following components as optional components.
- the styrene-based thermoplastic elastomer of component (D) refers to a thermoplastic elastomer containing styrene, a homologue thereof or an analog thereof.
- a hydrogenated styrene-based thermoplastic elastomer is used as the component (D).
- the component (D) contributes to an excellent low dielectric loss tangent (tan ⁇ ) in a high frequency region, that is, a dielectric loss tangent (tan ⁇ ) in a frequency range of 1 to 80 GHz.
- the maleic anhydride-modified styrene-based thermoplastic elastomer described above as a preferred example of the component (A) is included in the hydrogenated styrene-based thermoplastic elastomer. Therefore, as the component (D), a hydrogenated styrene-based thermoplastic elastomer other than the maleic anhydride-modified styrene-based thermoplastic elastomer is used. Therefore, a modified styrene-based thermoplastic elastomer other than maleic anhydride-modified can be used as the component (D). Specific examples include amine-modified styrene-based thermoplastic elastomers.
- styrene thermoplastic elastomer examples include polystyrene-poly (ethylene-ethylene / propylene) block-polystyrene (SEEPS), polystyrene-poly (ethylene / propylene) block-polystyrene (SEPS), and polystyrene.
- SEEPS polystyrene-poly (ethylene-ethylene / propylene) block-polystyrene
- SEPS polystyrene-poly (ethylene / propylene) block-polystyrene
- SEBS Poly (ethylene / butylene) block-polystyrene
- the amount of styrene in the styrene thermoplastic elastomer (D) is not particularly limited.
- the styrene content is preferably from 25 to 45%, more preferably from 25 to 35%, from the viewpoint of workability.
- the content of the component (D) is preferably 49% by mass or less based on 100% by mass of the total of the resin components, and 10 to 10% by mass. More preferably, it is 40% by mass. Since the component (D) is an optional component, it is less likely to be used than the component (A).
- the hydrogenated styrene-based thermoplastic elastomer as the component (D) may be used alone or in combination of two or more.
- the inorganic filler of component (E) includes silica, barium sulfate, calcium carbonate, talc, kaolin, clay, boron nitride, silicon nitride, aluminum nitride, silicon carbide, magnesium oxide, magnesium hydroxide, magnesium carbonate, and hydroxide. It is preferably at least one selected from aluminum and alumina.
- the inorganic filler of the component (E) can reduce the coefficient of thermal expansion (CTE) of the cured product of the resin composition and is excellent in high-frequency characteristics.
- the inorganic filler of the component (E) is preferably a silica filler having a thermal conductivity of less than 10 W / m ⁇ K.
- the silica filler having a thermal conductivity of less than 10 W / m ⁇ K is fused silica.
- the shape of the inorganic filler of the component (E) is not particularly limited.
- the shape of the inorganic filler may be any shape such as a spherical shape, an amorphous shape, and a scaly shape.
- the inorganic filler of the component (E) may be an aggregate.
- the average particle size of the inorganic filler of component (E) is preferably from 0.1 to 50 ⁇ m, more preferably from 0.1 to 20 ⁇ m, even more preferably from 0.2 to 10 ⁇ m.
- the average particle diameter is a particle diameter at an integrated value of 50% in a particle size distribution on a volume basis, measured by a laser diffraction and scattering method.
- the average particle diameter can be measured by, for example, a laser scattering diffraction particle size distribution analyzer: LS13320 (manufactured by Beckman Coulter, wet type).
- an inorganic filler which has been subjected to a surface treatment with a silane coupling agent or the like may be used.
- a silane coupling agent or the like When an inorganic filler having been subjected to a surface treatment is used, the dispersibility of the inorganic filler, and the wettability with the resin component and the bonding property are improved. Thereby, it is expected that the effect of improving the toughness of the cured product can be obtained.
- the mixing ratio of the inorganic filler of the component (E) is preferably 100 parts by mass or less based on 100 parts by mass of the resin component in total.
- the amount is more preferably from 30 to 70 parts by mass, and particularly preferably from 45 to 70 parts by mass.
- the type of the inorganic filler of the component (E) is not particularly limited.
- the inorganic filler of the component (E) one kind of filler may be used, or two or more kinds of fillers may be used in combination.
- the total content and the average particle size of the two or more fillers satisfy the above-mentioned ranges. Even when fillers of the same kind having different average particle diameters are used, their total content and average particle diameter satisfy the above-mentioned ranges.
- the curing catalyst of the component (F) is a catalyst that promotes the curing reaction of the present resin composition. More specifically, the curing catalyst of the component (F) controls the curing reaction of the solvent-soluble polyimide resin of the component (B) with the epoxy resin of the component (C) and the curing reaction of the epoxy resin of the component (C). A catalyst that promotes.
- the curing catalyst of the component (F) is preferably an amine-based curing catalyst or an imidazole-based curing catalyst because of having good curability. Since the storage stability is relatively good, the curing catalyst of the component (F) is more preferably an imidazole curing catalyst.
- amine curing catalyst examples include aromatic amines such as 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylpropane, 4,4'-diaminodiphenylsulfone, m-phenylenediamine, and p-xylylenediamine;
- aromatic amines such as 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylpropane, 4,4'-diaminodiphenylsulfone, m-phenylenediamine, and p-xylylenediamine
- aliphatic amines such as ethylenediamine, hexamethylenediamine, diethylenetriamine, and triethylenetetramine, and N-2- (aminoethyl) -3-aminopropyltrimethoxysilane.
- imidazole-based curing catalyst examples include 2-ethyl-4-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, and 1-benzyl-2-phenylimidazole (1B2PZ). , And the like.
- Commercially available imidazole-based curing catalysts include EH-5010S (trade name, manufactured by ADEKA Corporation), EMI24, BMI12, and IBMI12 (trade name, manufactured by Mitsubishi Chemical Corporation) and the like.
- a modified imidazole compound may be used as a curing catalyst for the component (F).
- epoxy-imidazole adduct compounds and acrylate-imidazole adduct compounds can be used as the curing catalyst of the component (F).
- examples of commercially available epoxy-imidazole adduct compounds include "Amicure PN-23" manufactured by Ajinomoto Fine-Techno, "Amicure PN-40” manufactured by Ajinomoto Fine-Techno, "Nvacure HX-3721” manufactured by Asahi Kasei, and “Fujicure FX-1000” manufactured by Fuji Kasei Kogyo Co., Ltd. and the like.
- Examples of commercially available acrylate-imidazole adduct compounds include "EH-2021” manufactured by ADEKA.
- the content of the component (F) is appropriately selected according to the type of the curing catalyst used as the component (F).
- the content of the component (F) is based on 100 parts by mass of the solvent-soluble polyimide resin of the component (B) and the epoxy resin of the component (C). On the other hand, it is preferably from 0.1 to 5.0 parts by mass, more preferably from 0.3 to 2.0 parts by mass.
- the present resin composition may further contain a silane coupling agent and the like.
- the raw material of the resin composition contains the above components (A) to (C), the components (D) to (F) added as needed, and other components.
- This resin composition can be obtained by dissolving or dispersing the raw material in an organic solvent.
- the apparatus for dissolving or dispersing these raw materials is not particularly limited.
- a stirrer equipped with a heating device, a dissolver, a planetary mixer, a raikai machine, a three-roll mill, a ball mill, a bead mill, or the like can be used.
- these devices may be used in an appropriate combination in order to obtain the present resin composition.
- the resin composition has the following preferable properties.
- thermosetting product of the present resin composition has excellent high-frequency electrical properties.
- the dielectric constant ( ⁇ ) of the thermosetting product in a frequency range of 1 to 80 GHz is 3 or less.
- the thermosetting product has a dielectric loss tangent (tan ⁇ ) of 0.0022 or less in a frequency range of 1 to 80 GHz, and more preferably 0.0020 or less.
- the value is 0,018 or less.
- the electric signal loss in the high frequency range of 3 GHz or more can be reduced. Can be reduced.
- the present resin composition has a sufficient adhesive strength to both the roughened surface and the glossy surface of the copper foil forming the wiring of the FPC.
- the present resin composition is excellent in adhesive strength to a glossy surface. For this reason, the present resin composition can be adhered to the copper foil surface having low roughness. Therefore, since the present resin composition is hardly affected by the roughness, transmission loss (transmission loss due to skin effect) can be reduced.
- the thermosetting product has a peel strength (180 ° peel) with respect to a roughened copper foil surface measured according to JIS K6871.
- the heat-cured product has a peel strength (180 ° peel) with respect to the glossy surface of the copper foil of 5N as measured by the procedure described in Examples described later. / Cm or more, more preferably 7 N / cm or more in a more preferred embodiment, and 10 N / cm or more in a particularly preferred embodiment.
- the present resin composition has a sufficient adhesive strength to a polyimide film used as a substrate material of an FPC.
- the thermosetting product has a peel strength (180 ° peel) with respect to the polyimide film measured by the procedure described in Examples described later. It is at least 5 N / cm, in a more preferred form it is at least 7 N / cm, and in a particularly preferred form it is at least 10 N / cm.
- the cured resin of the resin composition has high heat resistance. Specifically, in a preferable embodiment of the present resin composition, the cured resin thereof satisfies 288 ° C. 10 sec or more in a solder heat resistance test performed by a procedure described in Examples described later. Satisfies 288 ° C. for 1 min or more, and more preferably 288 ° C. for 3 min or more.
- a film containing the present resin composition (hereinafter, sometimes referred to as “the present film” in the present specification) can be obtained by a known method.
- a coating liquid is prepared by diluting the present resin composition to an appropriate viscosity with a solvent. This coating liquid is applied to at least one side of the support and dried. Thereby, a film with a support or a film peeled from the support can be obtained.
- solvents that can be used as the coating liquid include low-boiling solvents such as methylcyclohexane and dimethyl carbonate, ketones such as methyl ethyl ketone and methyl isobutyl ketone, aromatic solvents such as toluene and xylene, and cyclohexanone, dimethylformamide and And high boiling solvents such as 1-methyl 2-pyrrolidone.
- the amount of the solvent to be used is not particularly limited, and may be any amount that can adjust the coating solution to an optimum viscosity.
- the amount of the solvent used is preferably 20 to 70% by mass based on the solid content.
- the material of the support is appropriately selected depending on the method and application for producing the film, and is not particularly limited.
- Examples of the material of the support include metal foils such as copper and aluminum, base materials made of resins such as polyimide, liquid crystal polymer and PTFE, and carrier films made of resins such as polyester and polyethylene.
- the method of applying the coating liquid is not particularly limited. Examples of the method of applying the coating liquid include a slot die method, a gravure method, and a doctor-coater method. The method of applying the coating liquid can be appropriately selected according to the desired film thickness and the like.
- the thickness of the film is appropriately designed based on characteristics such as substrate thickness, component thickness, and mechanical strength required according to the application.
- the thickness of the film is generally from 10 to 200 ⁇ m.
- the conditions for drying the coating solution are appropriately designed according to the type and amount of the solvent used in the coating solution, the thickness of the coating solution applied, the difference in the drying device, and the like, and are not particularly limited. Drying of the coating liquid can be performed, for example, at a temperature of 60 to 150 ° C. under atmospheric pressure.
- the present film is placed on one of the surfaces to be bonded using the present film. Thereafter, the other object is placed on one of the surfaces to be bonded such that the surface to be bonded is in contact with the exposed surface of the film.
- the present film with a support when used, the present film is placed on the surface to be bonded of one object so that the exposed surface of the film is in contact with the surface to be bonded of one object. Thereafter, the film is temporarily pressure-bonded to the surface to be bonded.
- the temperature at the time of temporary compression bonding can be, for example, 130 ° C.
- the surface of the present film (insulating film) is exposed by peeling the support at the time of temporary press bonding.
- thermocompression bonding is performed at a predetermined temperature and for a predetermined time. After that, heat curing is performed.
- the temperature at the time of thermocompression bonding is preferably 100 to 160 ° C.
- the time for thermocompression bonding is preferably 0.5 to 3 minutes.
- the temperature for heat curing is preferably from 160 to 240 ° C., more preferably from 180 to 220 ° C.
- the heat curing time is preferably 30 to 120 minutes. Note that the temporary compression bonding step and the thermocompression bonding step may be omitted. In the case where a film-formed product is not used, the following procedure may be performed.
- the present resin composition (thermosetting resin composition) diluted to an appropriate viscosity with a solvent is applied to the surface to be bonded of one of the objects to be bonded, and dried. Thereafter, the above-mentioned one object is placed on the dried present resin composition.
- this film When this film is used as a coverlay film, the procedure for its use is as follows. This film is disposed at a predetermined position on a resin substrate with wiring having a wiring pattern formed on the main surface. This position is a position on the side of the resin substrate with wiring on which the wiring pattern is formed, which is covered with the cover lay film. Thereafter, temporary compression bonding, thermocompression bonding, and heat curing are performed at a predetermined temperature and a predetermined time. Note that the temporary compression bonding step and the thermocompression bonding step may be omitted. The temperature and time of the temporary compression bonding, thermocompression bonding, and heat curing are the same as in the case where the present film is used as an adhesive film for electric and electronic applications.
- the present resin composition is used for interlayer bonding of the constituent elements.
- the present resin composition is used for interlayer adhesion between an electronic component and a substrate in the present semiconductor device.
- the present resin composition is used in a device including an electronic component in the present semiconductor device.
- Examples 1 to 10, Comparative Examples 1 to 6) E-1
- the components other than the inorganic filler and the curing catalysts (F-1) and (F-2) were weighed and blended so that the blending ratio (parts by solids) shown in the following table was obtained. . Thereafter, toluene was added to the blended components, and they were charged into a reaction vessel heated to 80 ° C. Atmospheric pressure mixing was performed for 3 hours while rotating the reaction vessel at a rotation speed of 150 rpm. After cooling the mixed components to room temperature, predetermined amounts of the curing catalysts (F-1) and (F-2) were added thereto, and the mixture was mixed at room temperature for 1 hour.
- the components used in preparing the resin composition are as follows.
- BTDT-UP acid dianhydride
- Component (C) epoxy resin (C-1) liquid bisphenol A type epoxy resin, 828EL (trade name), manufactured by Mitsubishi Chemical Corporation (C-2) solid biphenyl type epoxy resin, NC3000H (trade name), Japan (C-3) Naphthalene type epoxy resin, HP4032D (trade name) manufactured by Kayaku Co., Ltd., manufactured by DIC Corporation
- (F) component curing catalyst (F-1): 1-benzyl-2-phenylimidazole (1B2PZ), manufactured by Shikoku Chemicals Co., Ltd.
- Dielectric constant ( ⁇ ), dielectric loss tangent (tan ⁇ ) The adhesive film was cured by heating under vacuum at 180 ° C. for 1 hour and 1 MPa using a vacuum hot press. Thereafter, the adhesive film was peeled from the support, a test piece (50 ⁇ 0.5 mm ⁇ 100 ⁇ 2 mm) was cut out from the adhesive film, and its thickness was measured. Using the film whose thickness was measured, the dielectric constant ( ⁇ ) and the dielectric loss tangent (tan ⁇ ) were measured by the SPDR method (10 GHz).
- Peel strength (coarse copper foil roughened surface) was measured in accordance with JIS C6471.
- Solder heat resistance The measurement of solder heat resistance was carried out in accordance with JIS C 5012-11993.
- a copper foil (CF-T9, manufactured by Fukuda Metal Foil & Powder Co., Ltd., thickness 18 ⁇ m) was bonded to both surfaces of the adhesive film with the roughened surface inside. Thereafter, the adhesive film and the copper foil were thermocompressed with a press machine (180 ° C., 60 min, 10 kgf) to obtain a test piece. This test piece was cut into a size of 30 mm ⁇ 30 mm and floated in a solder bath heated to 288 ° C. to check for blisters. The evaluation was performed based on the following criteria. ⁇ : Swelling occurred in less than 10 seconds. ⁇ : Swelling occurred in 10 sec or more and less than 1 min. A: No swelling occurred for 1 min or more.
- Examples 1 to 10 show a low dielectric constant ( ⁇ ) (3 or less) and a low dielectric loss tangent (tan ⁇ ) (0.0020 or less) in a frequency range of 1 to 80 GHz, and a peel strength (polyimide film). , The copper foil glossy surface and the copper foil roughened surface were each 5 N / 10 mm or more) and the solder heat resistance was excellent. Examples 2 and 3 are different from Example 1 in that the mixing ratio of the modified elastomer having an acid anhydride group of the component (A) and the solvent-soluble polyimide of the component (B) was changed. is there.
- Example 4 is an example in which hydrogenated styrene-based thermoplastic elastomer (D-1) was added to Example 1 as the component (D).
- Example 5 is an example in which an amine-modified styrene-based thermoplastic elastomer (D-2) was added to Example 1 as the component (D).
- Example 6 is an example in which silica filler was added as the component (E) to Example 4.
- Example 7 is different from Example 1 in that the modified elastomer having an acid anhydride group of the component (A) is changed to (A-2) and the epoxy resin of the component (C) is changed to (C-2). This is a working example.
- Example 8 differs from Example 7 in that the epoxy resin as the component (C) was changed to (C-1).
- Example 9 differs from Example 1 in that the mixing ratio of each component was changed, and silica filler was added as the component (E).
- Example 10 differs from Example 9 in that the epoxy resin as the component (C) was changed to (C-3) and the curing catalyst as the component (F) was changed to (F-2).
- Comparative Example 1 is a comparative example in which the solvent-soluble polyimide of the component (B) was not blended. In Comparative Example 1, the peel strength (polyimide film) was low, and the solder heat resistance evaluation was x.
- Comparative Example 2 is a comparative example in which the mixing ratio of the solvent-soluble polyimide of the component (B) is lower than the lower limit. In Comparative Example 2, the evaluation of the solder heat resistance was “X”.
- Comparative Example 3 is a comparative example in which the mixing ratio of the solvent-soluble polyimide of the component (B) is higher than the upper limit. In Comparative Example 3, the peel strength was so high that the polyimide film was broken. However, in Comparative Example 3, the dielectric loss tangent (tan ⁇ ) in the frequency range of 1 to 80 GHz was high.
- Comparative Example 4 is a comparative example in which a modified elastomer having an acid anhydride group of the component (A) was not blended, and a hydrogenated styrene-based thermoplastic elastomer (D-1) was blended as the component (D). .
- Comparative Example 4 the tack was large, and the dielectric constant ( ⁇ ) and the dielectric loss tangent (tan ⁇ ) in the frequency range of 1 to 80 GHz could not be measured. In Comparative Example 4, the peel strength (polyimide film) was low. Therefore, evaluation of solder heat resistance was not performed.
- Comparative Example 5 is a comparative example in which the modified elastomer having an acid anhydride group of the component (A) was not blended, and the amine-modified styrene-based thermoplastic elastomer (D-2) was added as the component (D). . In Comparative Example 5, the peel strength (polyimide film) was low.
- Comparative Example 6 is a comparative example in which the blending ratio of the solvent-soluble polyimide of the component (B) is lower than the lower limit. However, Comparative Example 6 had a lower proportion of the modified elastomer having an acid anhydride group of the component (A) and a higher proportion of the epoxy resin of the component (C) as compared with Comparative Example 2. It is. In Comparative Example 6, the dielectric loss tangent (tan ⁇ ) in the frequency range of 1 to 80 GHz was high. In Comparative Example 6, the peel strength (coarse surface of the copper foil) was low.
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Abstract
Description
また、本開示の一態様は、該樹脂組成物を用いた、フィルム、積層板および半導体装置に関する。
また、最近のプリント配線板における伝送信号の高速化要求に伴い、伝送信号の高周波化が、顕著に進んでいる。これにより、プリント配線板に使用される材料に対して、高周波領域、具体的には、周波数1GHz以上の領域での、伝送損失を低減できることが求められる。
本開示における1つの目的は、以下のような樹脂組成物を提供することにある。この樹脂組成物は、銅箔、およびポリイミドフィルムに対して、優れた接着強度を有する。さらに、この樹脂組成物は、周波数1GHz以上の高周波領域において、優れた電気特性を示す。具体的には、この樹脂組成物は、周波数1~80GHzの領域において、低誘電率(ε)、および、低誘電正接(tanδ)を示す。さらに、この樹脂組成物は、はんだ実装に耐えられる耐熱性を有する。
(A)酸無水物基を有する変性エラストマー、
(B)溶剤可溶性ポリイミド樹脂、および、
(C)エポキシ樹脂
を含み、前記(B)の含有量が、樹脂成分の合計100質量%に対し、5~20質量%である。
(D)前記(A)以外の水添されたスチレン系熱可塑性エラストマー
をさらに含有してもよい。
本開示の一実施形態にかかる樹脂組成物(本樹脂組成物)は、(A)酸無水物基を有する変性エラストマー、(B)溶剤可溶性ポリイミド樹脂、および、(C)エポキシ樹脂を含む。
本樹脂組成物の各成分について、以下に記載する。
(A)成分の酸無水物基を有する変性エラストマーは、例えば、酸無水物及びペルオキシドを、エラストマーと反応させることにより、製造されることができる。酸無水物基を有する変性エラストマーとしては、例えば、無水マレイン酸変性のSEBS(ポリスチレン/ポリエチレン/ポリブチレン/ポリスチレン)共重合体、無水マレイン酸変性のSBS(ポリスチレン/ポリブタジエン/ポリスチレン)共重合体、無水マレイン酸変性のSEPS(ポリスチレン/ポリエチレン/ポリプロピレン/ポリスチレン)共重合体、無水マレイン酸変性のSEP(ポリスチレン/ポリエチレン/ポリプロピレン)共重合体、および、無水マレイン酸変性のSIS(ポリスチレン/ポリイソプレン/ポリスチレン)などの無水マレイン酸変性スチレン系熱可塑性エラストマー、無水マレイン酸変性エチレン-プロピレン共重合体、無水マレイン酸変性エチレン-ブテン共重合体、無水マレイン酸変性エチレン-ブテン共重合体、無水マレイン酸変性エチレン-メチルアクリレート共重合体、無水マレイン酸変性エチレン-エチルアクリレート共重合体、無水マレイン酸変性エチレン-エチルアクリレート共重合体、ならびに、無水マレイン酸変性エチレン-ブチルアクリレート共重合体などが挙げられる。
無水マレイン酸変性されたスチレン系熱可塑性エラストマーのスチレン量は、27~33%であることがより好ましい。
(A)成分の含有量が92質量%以下であると、本樹脂組成物は、相対的に、適度な量の他成分(熱硬化成分)を含有する。そのため、本樹脂組成物のはんだ耐熱性が悪化するおそれが小さい。
(A)成分の含有量は、樹脂成分の合計100質量%に対し、70~90質量%であることがより好ましく、75~85質量%であることがさらに好ましい。
(B)成分の溶剤可溶性ポリイミドは、溶剤に可溶であればよく、構造などは特に限定されない。可溶性とは、以下より選ばれる溶剤の少なくとも一種に、23℃で20質量%以上溶解すること、を意味する。溶剤は、炭化水素系溶剤のトルエンおよびキシレン、ケトン系溶剤のアセトン、メチルエチルケトン、メチルイソブチルケトン、シクロヘキサノンおよびシクロペンタノン、エーテル系溶剤の1,4-ジオキサン、テトラヒドロフランおよびジグライム、グリコールエーテル系溶剤のメチルセロソルブ、エチルセロソルブ、プロピレングリコールモノメチルエーテル、プロピレングリコールモノエチルエーテル、プロピレングリコールモノブチルエーテルおよびジエチレングリコールメチルエチルエーテル、エステル系溶剤としての酢酸エチル、酢酸ブチル、乳酸エチルおよびガンマブチロラクトン、ベンジルアルコール、N-メチルピロリドン、N,N-ジメチルホルムアミド、ならびに、N,N-ジメチルアセトアミドである。
(B)成分の含有量は、樹脂成分の合計100質量%に対し、10~20質量%であることが好ましく、12~18質量%であることがより好ましい。
(C)成分のエポキシ樹脂としては、例えば、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、フェノールノボラック型エポキシ樹脂、脂環式エポキシ樹脂、シロキサン型エポキシ樹脂、ビフェニル型エポキシ樹脂、グリシジルエステル型エポキシ樹脂、グリシジルアミン型エポキシ樹脂、ヒダントイン型エポキシ樹脂、ナフタレン骨格を有するエポキシ樹脂、および、アントラセン骨格を有するエポキシ樹脂、が挙げられる。
本樹脂組成物において、ここで例示した化合物は、単独で用いられてもよいし、2つ以上のものが混合して用いられてもよい。(C)成分のエポキシ当量は、90~350であることが好ましく、100~300であることがより好ましい。
(D)(A)成分以外の水添されたスチレン系熱可塑性エラストマー
(D)成分のスチレン系熱可塑性エラストマーとは、スチレン、その同族体もしくはその類似体を含有する、熱可塑性エラストマーをいう。但し、分子中の不飽和結合の存在は、誘電正接(tanδ)の増大につながる。このため、(D)成分として、水添されたスチレン系熱可塑性エラストマーを用いる。これにより、(D)成分は、高周波領域における優れた低誘電正接(tanδ)、すなわち、周波数1~80GHzの領域における誘電正接(tanδ)に寄与する。
(E)成分の無機フィラ-としては、シリカ、硫酸バリウム、炭酸カルシウム、タルク、カオリン、クレ-、窒化ホウ素、窒化珪素、窒化アルミニウム、炭化珪素、酸化マグネシウム、水酸化マグネシウム、炭酸マグネシウム、水酸化アルミニウム、および、アルミナより選択される少なくとも一種であることが好ましい。
本明細書において、平均粒径は、レ-ザ-回折および散乱法によって測定された、体積基準での粒度分布における、積算値50%での粒径である。平均粒径は、例えば、レ-ザ-散乱回析法粒度分布測定装置:LS13320(ベックマンコ-ルタ-社製、湿式)により、測定されることができる。
(F)成分の硬化触媒は、本樹脂組成物の硬化反応を促進する触媒である。より具体的には、(F)成分の硬化触媒は、(B)成分の溶剤可溶性ポリイミド樹脂と(C)成分のエポキシ樹脂との硬化反応、および、(C)成分のエポキシ樹脂の硬化反応を促進する触媒である。
(F)成分の硬化触媒は、良好な硬化性を有することから、アミン系硬化触媒、および、イミダゾ-ル系硬化触媒であることが好ましい。保存安定性が比較的良好なことから、(F)成分の硬化触媒は、イミダゾ-ル系硬化触媒であることが、より好ましい。
アミン系硬化触媒としては、4,4´-ジアミノジフェニルメタン、4,4´-ジアミノジフェニルプロパン、4,4´-ジアミノジフェニルスルホン、m-フェニレンジアミン、p-キシリレンジアミン等の芳香族アミン類、エチレンジアミン、ヘキサメチレンジアミン、ジエチレントリアミン、トリエチレンテトラミン等の脂肪族アミン類、および、N-2-(アミノエチル)-3-アミノプロピルトリメトキシシランなどが挙げられる。
イミダゾ-ル系硬化触媒としては、2-エチル-4-メチルイミダゾ-ル、1-シアノエチル-2-エチル-4-メチルイミダゾ-ル、および、1-ベンジル-2-フェニルイミダゾ-ル(1B2PZ)、などが挙げられる。市販品のイミダゾ-ル系硬化触媒としては、EH-5010S(商品名、株式会社ADEKA製)、ならびに、EMI24、BMI12、およびIBMI12(商品名、三菱化学株式会社製)等が挙げられる。
また、(F)成分の硬化触媒として、変性イミダゾ-ル化合物を使用することもできる。たとえば、(F)成分の硬化触媒として、エポキシ-イミダゾ-ルアダクト系化合物、および、アクリレ-ト-イミダゾ-ルアダクト化合物を使用できる。市販されているエポキシ-イミダゾ-ルアダクト系化合物としてとしては、例えば、味の素ファインテクノ社製「アミキュアPN-23」、同社製「アミキュアPN-40」、旭化成社製「ノバキュアHX-3721」、および、富士化成工業社製「フジキュアFX-1000」等が挙げられる。市販されているアクリレ-ト-イミダゾ-ルアダクト系化合物としては、例えば、ADEKA社製「EH-2021」が挙げられる。(F)成分の硬化触媒として、旭化成社製「ノバキュアHX-3088」も使用することができる。
本樹脂組成物の熱硬化物における周波数1~80GHzの領域での、誘電率(ε)および誘電正接(tanδ)が、上記の範囲であることにより、3GHz以上の高周波領域における電気信号損失を、低減することができる。
具体的には、本樹脂組成物の好ましい形態においては、その熱硬化物では、JIS K6871に準拠して測定された、銅箔粗化面に対するピ-ル強度(180度ピ-ル)が、5N/cm以上であり、より好ましい形態においては、7N/cm以上であり、特に好ましい形態においては、10N/cm以上である。
また、本樹脂組成物の好ましい形態においては、その熱硬化物では、後述する実施例に記載の手順で測定された、銅箔光沢面に対するピ-ル強度(180度ピ-ル)が、5N/cm以上であり、より好ましい形態においては、7N/cm以上であり、特に好ましい形態においては、10N/cm以上である。
具体的には、本樹脂組成物の好ましい形態においては、その熱硬化物では、後述する実施例に記載の手順で測定された、ポリイミドフィルムに対するピ-ル強度(180度ピ-ル)が、5N/cm以上であり、より好ましい形態においては、7N/cm以上であり、特に好ましい形態においては、10N/cm以上である。
次に、仮圧着時に支持体を剥離することによって、本フィルム(絶縁フィルム)の面を露出させる。この露出面上に、他方の対象物を、その被接着面が本フィルムの露出面と接するように、載置する。これらの手順を実施した後、所定温度及び所定時間、熱圧着を実施する。その後、加熱硬化を実施する。
熱圧着時の温度は、好ましくは100~160℃である。熱圧着の時間は、好ましくは0.5~3分である。
加熱硬化の温度は、好ましくは160~240℃であり、より好ましくは180~220℃である。加熱硬化時間は、好ましくは30~120分である。
なお、仮圧着工程および熱圧着工程は、省略されても良い。
なお、予めフィルム化したものを使用しない場合、以下の手順が実施されてもよい。溶剤で適正粘度に希釈された本樹脂組成物(熱硬化性樹脂組成物)を、一方の接着対象物の被接着面に塗布し、乾燥させる。その後に、上記した一方の対象物を、乾燥されたた本樹脂組成物上に載置する。
本フィルムを、主面に配線パタ-ンが形成された配線付樹脂基板の、所定の位置に配置する。この位置は、すなわち、配線付樹脂基板における配線パタ-ンが形成された側の、カバ-レイフィルムで被覆される位置である。その後、所定温度及び所定時間、仮圧着、熱圧着および加熱硬化を実施する。なお、仮圧着工程および熱圧着工程は、省略されても良い。
仮圧着、熱圧着および加熱硬化の温度および時間は、上記した本フィルムを電気および電子用途の接着フィルムとして使用する場合と、同様である。
(E-1)無機フィラ-、硬化触媒(F-1)および(F-2)以外の各成分を、下記表に示す配合割合(固形分での質量部)になるように、計量配合した。その後、配合された成分に、トルエンを加え、それらを、80℃に加温された反応釜に投入した。回転数150rpmで反応釜を回転させながら、3時間にわたって、常圧混合を行った。混合された成分を、室温まで冷却した後、これに、所定量の硬化触媒(F-1)および(F-2)を加え、1時間、常温での混合を実施した。さらに、(E-1)無機フィラ-を使用する場合には、(E-1)無機フィラ-を加え、湿式微粒化装置(MN2-2000AR、吉田機械興業株式会社製)にてフィラ-を分散させた。これにより、樹脂組成物を含むワニスを得た。
このようにして得られた樹脂組成物を含むワニスを、支持体(離型処理をほどこしたPETフィルム)の片面に塗布し、100℃で乾燥させた。これにより、支持体付の接着フィルム(厚さ30μm)を得た。
(A-1)無水マレイン酸変性スチレン系エラストマ-(SEBS)、M1913(商品名)、旭化成ケミカルズ株式会社製、スチレン比率30%
(A-2)無水マレイン酸変性スチレン系エラストマ-(SEBS)、M1943(商品名)、旭化成ケミカルズ株式会社製、スチレン比率20%
(B-1):下記手順で合成した溶剤可溶性ポリイミド樹脂
攪拌機、分水器、温度計および窒素ガス導入管を備えた反応容器に、市販の芳香族テトラカルボン酸二無水物(BTDT-UP(商品名)、エボニックジャパン株式会社製)210.0g、および、シクロヘキサノン1008.0gメチルジシクロヘキサン201.6gを仕込み、溶液を作製した。この溶液を、60℃まで加熱した。次いで、市販のダイマ-アミン(PRIAMINE(商品名)1075、クロ-ダジャパン株式会社製)を、溶液に、341.7g滴下した。その後、140℃で10時間かけて、イミド反応を実施した。その後、溶剤の減圧留去、および、トルエン置換を行うった。これにより、溶剤可溶性ポリイミド樹脂の溶液(不揮発分30.1%)を得た。GPC測定を行ったところ、この溶液の数平均分子量(Mn)は、15000であった。
(C-1)液状ビスフェノ-ルA型エポキシ樹脂、828EL(商品名)、三菱化学株式会社製
(C-2)固形ビフェニル型エポキシ樹脂、NC3000H(商品名)、日本化薬株式会社製
(C-3)ナフタレン型エポキシ樹脂、HP4032D(商品名)、DIC株式会社製
(D-1)水添スチレン系熱可塑性エラストマ-(SEBS)、タフテックH1052(商品名)、旭化成ケミカルズ株式会社製、スチレン比率20%
(D-2)アミン変性スチレン系熱可塑性エラストマ-(SEBS)、タフテックMP10(商品名)、旭化成ケミカルズ株式会社製、スチレン比率30%
(E-1)アミノシランカップリング剤で表面処理された球状シリカ、SC4050 SX(商品名)、株式会社アドマテックス製、平均粒径1.0μm
(F-1):1-ベンジル-2-フェニルイミダゾ-ル(1B2PZ)、四国化成工業株式会社製
(F-2):変性イミダゾ-ル型液状潜在性硬化剤、EH2021(商品名)、ADEKA社製
×:10sec未満で膨れが生じた。
〇:10sec以上1min未満で膨れが生じた。
◎:1min以上膨れが生じなかった。
なお、実施例2および3は、実施例1に対し、(A)成分の酸無水物基を有する変性エラストマ-、および、(B)成分の溶剤可溶性ポリイミドの、配合割合を変えた実施例である。
実施例4は、実施例1に対し、(D)成分として、水添スチレン系熱可塑性エラストマ-(D-1)を添加した実施例である。実施例5は、実施例1に対し、(D)成分として、アミン変性スチレン系熱可塑性エラストマ-(D-2)を添加した実施例である。
実施例6は、実施例4に対し、(E)成分として、シリカフィラ-を添加した実施例である。
実施例7は、実施例1に対し、(A)成分の酸無水物基を有する変性エラストマ-を(A-2)に変えるとともに、(C)成分のエポキシ樹脂を(C-2)に変えた実施例である。
実施例8は、実施例7に対し、(C)成分のエポキシ樹脂を(C-1)に変えた実施例である。
実施例9は、実施例1に対し、各成分の配合割合を変え、さらに(E)成分として、シリカフィラ-を添加した実施例である。
実施例10は、実施例9に対し、(C)成分のエポキシ樹脂を(C-3)に変え、(F)成分の硬化触媒を(F-2)に変えた実施例である。
比較例1は、(B)成分の溶剤可溶性ポリイミドを配合していない比較例である。比較例1では、ピ-ル強度(ポリイミドフィルム)が低く、はんだ耐熱性評価が×であった。比較例2は、(B)成分の溶剤可溶性ポリイミドを配合割合が下限より低い比較例である。比較例2では、はんだ耐熱性評価が×であった。比較例3は、(B)成分の溶剤可溶性ポリイミドを配合割合が、上限より高い比較例である。比較例3では、ポリイミドフィルムが破断してしまうほど、ピ-ル強度が高かった。しかし、比較例3では、周波数1~80GHzの領域における誘電正接(tanδ)が、高かった。
比較例4は、(A)成分の酸無水物基を有する変性エラストマ-を配合せず、(D)成分として、水添スチレン系熱可塑性エラストマ-(D-1)を配合した比較例である。比較例4では、タックが大きく、周波数1~80GHzの領域での誘電率(ε)および誘電正接(tanδ)を、測定できなかった。また、比較例4では、ピ-ル強度(ポリイミドフィルム)が低かった。そのため、はんだ耐熱性の評価を実施しなかった。
比較例5は、(A)成分の酸無水物基を有する変性エラストマ-を配合せず、(D)成分として、アミン変性スチレン系熱可塑性エラストマ-(D-2)を添加した比較例である。比較例5では、ピ-ル強度(ポリイミドフィルム)が低かった。比較例6は、(B)成分の溶剤可溶性ポリイミドの配合割合が下限より低い比較例である。但し、比較例6は、比較例2に比べて、(A)成分の酸無水物基を有する変性エラストマ-の配合割合が低く、かつ、(C)成分のエポキシ樹脂の配合割合が高い比較例である。比較例6では、周波数1~80GHzの領域における誘電正接(tanδ)が、高くなった。また、比較例6では、ピ-ル強度(銅箔粗化面)が低かった。
Claims (6)
- (A)酸無水物基を有する変性エラストマ-、
(B)溶剤可溶性ポリイミド樹脂、および、
(C)エポキシ樹脂
を含み、
前記(B)の含有量が、樹脂成分の合計100質量%に対し、5~20質量%である、
樹脂組成物。 - 前記(A)が、スチレン量が25~35%の無水マレイン酸変性されたスチレン系エラストマ-である、
請求項1に記載の樹脂組成物。 - (D)前記(A)以外の水添されたスチレン系熱可塑性エラストマ-
をさらに含有する、
請求項1または2に記載の樹脂組成物。 - 請求項1~3のいずれかに記載の樹脂組成物を含むフィルム。
- 請求項1~3のいずれかに記載の樹脂組成物を用いた積層板。
- 請求項1~3のいずれかに記載の樹脂組成物を用いた半導体装置。
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| JPWO2022045157A1 (ja) * | 2020-08-27 | 2022-03-03 | ||
| WO2022045157A1 (ja) * | 2020-08-27 | 2022-03-03 | 信越ポリマー株式会社 | 接着剤組成物 |
| JP7716415B2 (ja) | 2020-08-27 | 2025-07-31 | 信越ポリマー株式会社 | 接着剤組成物 |
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| JP2023017308A (ja) * | 2021-07-26 | 2023-02-07 | 東洋インキScホールディングス株式会社 | 接着性樹脂シート、プリント配線板および、電子機器。 |
| JP7342917B2 (ja) | 2021-07-26 | 2023-09-12 | 東洋インキScホールディングス株式会社 | 接着性樹脂シート、プリント配線板および、電子機器。 |
| JP2023070764A (ja) * | 2021-11-10 | 2023-05-22 | 信越化学工業株式会社 | 熱硬化性マレイミド樹脂組成物 |
| JP7660990B2 (ja) | 2021-11-10 | 2025-04-14 | 信越化学工業株式会社 | 熱硬化性マレイミド樹脂組成物 |
| JP2023096204A (ja) * | 2021-12-27 | 2023-07-07 | 日鉄ケミカル&マテリアル株式会社 | ポリイミド組成物、樹脂フィルム、積層体、カバーレイフィルム、樹脂付き銅箔、金属張積層板及び回路基板 |
| JP2023096203A (ja) * | 2021-12-27 | 2023-07-07 | 日鉄ケミカル&マテリアル株式会社 | ポリイミド組成物、樹脂フィルム、積層体、カバーレイフィルム、樹脂付き銅箔、金属張積層板及び回路基板 |
| WO2023199738A1 (ja) * | 2022-04-11 | 2023-10-19 | 株式会社Adeka | 組成物及び硬化物 |
| JP2023179860A (ja) * | 2022-06-08 | 2023-12-20 | 日本化薬株式会社 | ポリイミド樹脂組成物及びその硬化物 |
| JP7841953B2 (ja) | 2022-06-08 | 2026-04-07 | 日本化薬株式会社 | ポリイミド樹脂組成物及びその硬化物 |
| WO2025009565A1 (ja) * | 2023-07-06 | 2025-01-09 | 株式会社レゾナック | 硬化性樹脂組成物、硬化性フィルム、及び積層フィルム |
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| EP3862390B1 (en) | 2024-03-20 |
| KR102818841B1 (ko) | 2025-06-10 |
| JPWO2020071153A1 (ja) | 2021-09-02 |
| CN112771110A (zh) | 2021-05-07 |
| TW202026349A (zh) | 2020-07-16 |
| WO2020071153A1 (ja) | 2020-04-09 |
| KR20210069636A (ko) | 2021-06-11 |
| TWI826536B (zh) | 2023-12-21 |
| KR20210068424A (ko) | 2021-06-09 |
| JPWO2020071154A1 (ja) | 2021-09-24 |
| EP3862390A4 (en) | 2022-06-08 |
| CN112771110B (zh) | 2022-11-04 |
| KR102715236B1 (ko) | 2024-10-08 |
| CN112789317A (zh) | 2021-05-11 |
| CN112789317B (zh) | 2023-03-10 |
| TWI814907B (zh) | 2023-09-11 |
| JP7202690B2 (ja) | 2023-01-12 |
| JP7202691B2 (ja) | 2023-01-12 |
| EP3862390A1 (en) | 2021-08-11 |
| TW202024141A (zh) | 2020-07-01 |
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