WO2018016530A1 - 樹脂組成物、樹脂層付き支持体、プリプレグ、積層板、多層プリント配線板及びミリ波レーダー用プリント配線板 - Google Patents
樹脂組成物、樹脂層付き支持体、プリプレグ、積層板、多層プリント配線板及びミリ波レーダー用プリント配線板 Download PDFInfo
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- 0 CN(C(*1(C(N2C)=O)C2=O)=O)C1=O Chemical compound CN(C(*1(C(N2C)=O)C2=O)=O)C1=O 0.000 description 2
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- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on 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 C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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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
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/024—Dielectric details, e.g. changing the dielectric material around a transmission line
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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
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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
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- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
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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
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- 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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Definitions
- the present invention relates to a resin composition, a support with a resin layer, a prepreg, a laminate, a multilayer printed wiring board, and a printed wiring board for millimeter wave radar.
- polyphenylene ether (PPE) resin is used as a heat-resistant thermoplastic polymer exhibiting excellent high-frequency characteristics for printed wiring boards that require low transmission loss.
- PPE polyphenylene ether
- a method in which polyphenylene ether and a thermosetting resin are used in combination has been proposed.
- a resin composition containing a polyphenylene ether and an epoxy resin for example, a patent document) 1
- a resin composition for example, refer to Patent Document 2
- the like using polyphenylene ether and a cyanate ester resin having a low relative dielectric constant among thermosetting resins.
- the present inventors based on polyphenylene ether resin and polybutadiene resin, are semi-IPN at the resin composition production stage (A stage stage), thereby providing compatibility, heat resistance, thermal expansion characteristics, and conductivity.
- the resin composition which can improve adhesiveness, a flame retardance, etc. is proposed (for example, refer patent document 3).
- printed circuit board materials used in recent high-frequency bands are required to have various characteristics such as high flame retardance in addition to high-frequency characteristics.
- the present invention is a resin having excellent high-frequency characteristics (low relative dielectric constant, low dielectric loss tangent), high heat resistance and flame retardancy, and a low load on the global environment.
- a composition for example, a thermosetting resin composition
- a support with a resin layer, a prepreg, a laminated board, a multilayer printed wiring board, and a printed wiring board for millimeter wave radar manufactured using the resin composition. The purpose is to do.
- the present invention includes the following aspects.
- R 1 represents a tetravalent organic group.
- R 2 and R 3 each independently represents an alkylene group having 4 to 50 carbon atoms
- R 4 represents an alkyl group having 4 to 50 carbon atoms
- R 5 represents an alkyl group having 2 to 50 carbon atoms. Indicates an alkyl group.
- a support with a resin layer comprising a resin layer comprising the resin composition according to any one of [1] to [9] and a support substrate.
- a prepreg composed of the resin composition according to any one of [1] to [9] and a fiber base material.
- a laminate comprising a resin layer containing a cured product of the resin composition according to any one of [1] to [9] and a conductor layer.
- a multilayer printed wiring board comprising a resin layer containing a cured product of the resin composition according to any one of [1] to [9] and at least three circuit layers.
- a millimeter-wave radar printed wiring board comprising a resin layer containing a cured product of the resin composition according to any one of [1] to [9] and a circuit layer.
- thermosetting resin composition having excellent high-frequency characteristics (low relative dielectric constant, low dielectric loss tangent), heat resistance and flame retardancy at a high level, and less burden on the global environment.
- a support with a resin layer, a prepreg, a laminate, a multilayer printed wiring board, and a printed wiring board for millimeter wave radar manufactured using the resin composition can be provided.
- both the relative dielectric constant and dielectric loss tangent in the high frequency region are low. Have dielectric properties.
- the handleability of the resin film is deteriorated and the strength tends not to be sufficiently maintained.
- a resin film excellent in appearance and handleability taciness, cracking, powder falling, etc.
- the resin composition of the present invention has high flame retardancy, it can minimize the generation of harmful substances due to combustion, and does not contain a halogen-based compound that causes generation of harmful substances such as dioxins by combustion. Therefore, it is possible to minimize the load on the global environment.
- the high frequency region refers to 0.3 GHz to 300 GHz
- the frequency region used for millimeter wave radar refers to 3 GHz to 300 GHz.
- a numerical range indicated by using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the upper limit value or lower limit value of a numerical range of a certain step may be replaced with the upper limit value or lower limit value of the numerical range of another step.
- the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
- a or B only needs to include either A or B, and may include both.
- the content of each component in the composition means the total amount of the plurality of substances present in the composition unless there is a specific notice when there are a plurality of substances corresponding to each component in the composition. means.
- the resin composition of the present embodiment includes (A) a compound having a maleimide group, a divalent group having at least two imide bonds, and a saturated or unsaturated divalent hydrocarbon group, and (B) a non-halogen-based difficulty. And a flame retardant.
- a compound having a maleimide group, a divalent group having at least two imide bonds, and a saturated or unsaturated divalent hydrocarbon group is referred to as component (A).
- component (A) A compound having (a) a maleimide group, (b) a divalent group having at least two imide bonds, and (c) a saturated or unsaturated divalent hydrocarbon group according to this embodiment is referred to as component (A).
- component (A) A compound having (a) a maleimide group has a structure (a), (b) a divalent group having at least two imide bonds has a structure (b), (c) a saturated or unsaturated divalent hydrocarbon group has a structure ( c).
- the maleimide group is not particularly limited, and is a general maleimide group.
- the maleimide group may be bonded to an aromatic ring or an aliphatic chain, but is preferably bonded to an aliphatic chain from the viewpoint of dielectric properties.
- the divalent group having at least two imide bonds is not particularly limited, and examples thereof include a group represented by the following formula (I).
- R 1 represents a tetravalent organic group.
- R 1 is not particularly limited as long as it is a tetravalent organic group.
- R 1 may be a hydrocarbon group having 1 to 100 carbon atoms, or a hydrocarbon group having 2 to 50 carbon atoms. It may be a hydrocarbon group having 4 to 30 carbon atoms.
- R 1 may be a substituted or unsubstituted siloxane moiety.
- siloxane moiety include structures derived from dimethylsiloxane, methylphenylsiloxane, diphenylsiloxane, and the like.
- examples of the substituent include an alkyl group, an alkenyl group, an alkynyl group, a hydroxyl group, an alkoxy group, a mercapto group, a cycloalkyl group, a substituted cycloalkyl group, a heterocyclic group, and a substituted heterocyclic group.
- R x represents a hydrogen atom or an alkyl group.
- the acid anhydride include compounds as described below.
- R 1 is preferably an aromatic, more preferably a group obtained by removing two acid anhydride groups from pyromellitic anhydride. That is, the structure (b) is more preferably a group represented by the following formula (III).
- a plurality of structures (b) exist in component (A).
- the structures (b) may be the same or different.
- the number of structures (b) in the component (A) is preferably 2 to 40, more preferably 2 to 20, and still more preferably 2 to 10.
- the structure (b) may be a group represented by the following formula (IV) or the following formula (V).
- Structure (c) is not particularly limited, and may be linear, branched or cyclic. From the viewpoint of high-frequency characteristics, the structure (c) is preferably an aliphatic hydrocarbon group.
- the carbon number of the saturated or unsaturated divalent hydrocarbon group may be 8 to 100, or 10 to 70, or 15 to 50.
- the hydrocarbon group may have a branch.
- the structure (c) is preferably an alkylene group which may have a branch having 8 to 100 carbon atoms, more preferably an alkylene group which may have a branch having 10 to 70 carbon atoms, An alkylene group which may have a branch having 15 to 50 carbon atoms is more preferable.
- the component having the structure (c) improves the flexibility of the resin composition according to this embodiment, and the handleability of the resin film produced from the resin composition (tackiness, cracking, powder falling off) Etc.) and strength can be increased.
- the structure (c) having the above carbon number is preferable because the molecular structure can be easily made three-dimensional and the free volume of the polymer can be increased to reduce the density, that is, to reduce the dielectric constant. From the viewpoint of improving flexibility, it is also preferable that the structure (c) has a side chain and the carbon number of the side chain is within the above range.
- an alkylene group such as a nonylene group, a decylene group, an undecylene group, a dodecylene group, a tetradecylene group, a hexadecylene group, an octadecylene group or a nonadecylene group; an arylene group such as a benzylene group, a phenylene group or a naphthylene group; Examples include arylene alkylene groups such as phenylenemethylene group, phenyleneethylene group, benzylpropylene group, naphthylenemethylene group, and naphthyleneethylene group; and arylenealkylene groups such as phenylenedimethylene group and phenylenediethylene group.
- a group represented by the following formula (II) is particularly preferable as the structure (c) from the viewpoints of high frequency characteristics, low thermal expansion characteristics, adhesion to a conductor, heat resistance and low hygroscopicity.
- R 2 and R 3 each independently represents an alkylene group having 4 to 50 carbon atoms. From the viewpoint of further improving flexibility and ease of synthesis, R 2 and R 3 are each independently preferably an alkylene group having 5 to 25 carbon atoms, and preferably an alkylene group having 6 to 10 carbon atoms. More preferred is an alkylene group having 7 to 10 carbon atoms.
- R 4 represents an alkyl group having 4 to 50 carbon atoms. From the viewpoint of further improving flexibility and ease of synthesis, R 4 is preferably an alkyl group having 5 to 25 carbon atoms, more preferably an alkyl group having 6 to 10 carbon atoms, and 7 to 7 carbon atoms. More preferably, it is 10 alkyl groups.
- R 5 represents an alkyl group having 2 to 50 carbon atoms. From the viewpoint of further improving flexibility and ease of synthesis, R 5 is preferably an alkyl group having 3 to 25 carbon atoms, more preferably an alkyl group having 4 to 10 carbon atoms, and 5 to 5 carbon atoms. More preferably, it is an alkyl group of 8.
- a plurality of structures (c) may exist in component (A).
- the structures (c) may be the same or different.
- 2 to 40 structures (c) are preferably present in component (A), more preferably 2 to 20 structures (c) are present, and 2 to 10 structures (c) are present. More preferably.
- the content of the component (A) in the resin composition is not particularly limited.
- the lower limit value of the content of the component (A) may be 2% by mass or more or 10% by mass or more with respect to the total mass of the resin composition (solid content).
- the upper limit value of the content of the component (A) is 98% by mass or less, 50% by mass or less, or 30% by mass or less with respect to the total mass of the resin composition (solid content). Also good.
- the content of the component (A) is preferably 2 to 98% by mass, more preferably 10 to 50% by mass with respect to the total mass of the resin composition (solid content). More preferably, it is 10 to 30% by mass.
- the molecular weight of the component (A) is not particularly limited. From the viewpoint of fluidity, the lower limit of the weight average molecular weight (Mw) of the component (A) may be 500 or more, 1000 or more, 1500 or more, or 1700 or more. Moreover, 10,000 or less, 9000 or less, 7000 or less, or 5000 or less may be sufficient as the upper limit of Mw of (A) component from a viewpoint of handleability. Mw of component (A) is preferably 500 to 10,000, more preferably 1000 to 9000, still more preferably 1500 to 9000, from the viewpoints of handling properties, fluidity, and circuit embedding properties. Is more preferably ⁇ 7000, particularly preferably 1700 to 5,000.
- Mw of the component (A) can be measured by gel permeation chromatography (GPC) method.
- the measurement conditions for GPC are as follows. Pump: L-6200 [manufactured by Hitachi High-Technologies Corporation] Detector: L-3300 RI [manufactured by Hitachi High-Technologies Corporation] Column oven: L-655A-52 [manufactured by Hitachi High-Technologies Corporation] Guard column and column: TSK Guardcolumn HHR-L + TSKgel G4000HHR + TSKgel G2000HHR [All trade names, manufactured by Tosoh Corporation] Column size: 6.0 ⁇ 40 mm (guard column), 7.8 ⁇ 300 mm (column) Eluent: Tetrahydrofuran Sample concentration: 30 mg / 5 mL Injection volume: 20 ⁇ L Flow rate: 1.00 mL / min Measurement temperature: 40 ° C
- the method for producing the component is not limited.
- the component (A) may be produced, for example, by reacting an acid anhydride and a diamine to synthesize an amine-terminated compound and then reacting the amine-terminated compound with an excess of maleic anhydride.
- the acid anhydride examples include pyromellitic anhydride, maleic anhydride, succinic anhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride, 3,3 ′, 4,4′-biphenyl Examples thereof include tetracarboxylic dianhydride and 3,3 ′, 4,4′-diphenylsulfone tetracarboxylic dianhydride.
- These acid anhydrides may be used alone or in combination of two or more depending on the purpose and application.
- R 1 of the formula (I) can be used a tetravalent organic group derived from acid anhydrides such as those listed above.
- the acid anhydride is preferably pyromellitic anhydride.
- diamine examples include dimer diamine, 2,2-bis (4- (4-aminophenoxy) phenyl) propane, 1,3-bis (4-aminophenoxy) benzene, and 4,4′-bis (4-amino). Phenoxy) biphenyl, 4,4′-diamino-3,3′-dihydroxybiphenyl, 1,3-bis [2- (4-aminophenyl) -2-propyl] benzene, 1,4-bis [2- (4 -Aminophenyl) -2-propyl] benzene, polyoxyalkylenediamine, [3,4-bis (1-aminoheptyl) -6-hexyl-5- (1-octenyl)] cyclohexene, and the like. These may be used alone or in combination of two or more according to the purpose and application.
- component (A) for example, a compound represented by the following formula (XIII) may be used.
- R and Q each independently represent a divalent organic group.
- R can be the same as in the above structure (c), and Q can be the same as the above R 1 .
- N represents an integer of 1 to 10.
- a commercially available compound can also be used as component (A).
- Commercially available compounds include, for example, Designer Molecules Inc. Specific examples include BMI-1500, BMI-1700, BMI-3000, BMI-5000, BMI-9000 (all are trade names), and the like. From the viewpoint of obtaining better high frequency characteristics, it is more preferable to use BMI-3000 as the component (A).
- the resin composition of this embodiment can further contain a maleimide group-containing compound different from the component (A).
- the maleimide group-containing compound is sometimes referred to as component (A2).
- the compound which can correspond to both (A) component and (A2) component shall belong to (A) component.
- the resin composition is particularly excellent in low thermal expansion characteristics. That is, the resin composition of the present embodiment can further improve the low thermal expansion characteristics and the like while maintaining good dielectric properties by using the components (A) and (A2) together.
- the cured product obtained from the resin composition containing the component (A) and the component (A2) is a structural unit composed of the component (A) having low dielectric properties and the component (A2) having low thermal expansion. This is presumably because it contains a polymer having a structural unit consisting of
- the component (A2) preferably has a lower coefficient of thermal expansion than the component (A).
- a maleimide group-containing compound having a molecular weight lower than that of the component (A) a maleimide group-containing compound having more aromatic rings than the component (A)
- the content of the component (A2) in the resin composition is not particularly limited. From the viewpoint of low thermal expansion, the lower limit of the content of the component (A2) may be 1% by mass or more or 1.5% by mass or more with respect to the total mass of the resin composition (solid content). Further, from the viewpoint of dielectric properties, the upper limit of the content of the component (A2) may be 95% by mass, 50% by mass, or 30% by mass with respect to the total mass of the resin composition (solid content). Good. From the viewpoint of low thermal expansion, the content of the component (A2) is preferably 1 to 95% by mass, more preferably 1 to 50% by mass, based on the total mass of the resin composition (solid content). More preferably, the content is 1.5 to 30% by mass.
- the blending ratio of the component (A) and the component (A2) in the resin composition is not particularly limited.
- the mass ratio (A2) / (A) of the component (A) to the component (A2) is preferably 0.01 to 3, and preferably 0.03 to 2. More preferably, it is 0.05 to 1, more preferably 0.05 to 0.5.
- the maleimide group-containing compound is not particularly limited, but preferably has an aromatic ring. Since the aromatic ring is rigid and has low thermal expansion, the thermal expansion coefficient can be further reduced by using the component (A2) having an aromatic ring.
- the maleimide group may be bonded to an aromatic ring or an aliphatic chain, but is preferably bonded to an aromatic ring from the viewpoint of dielectric properties. That is, the component (A2) preferably has a group in which a maleimide group is bonded to an aromatic ring.
- the component (A2) is also preferably a polymaleimide compound containing two or more maleimide groups.
- component (A2) examples include 1,2-dimaleimidoethane, 1,3-dimaleimidopropane, bis (4-maleimidophenyl) methane, bis (3-ethyl-4-maleimidophenyl) methane, bis ( 3-ethyl-5-methyl-4-maleimidophenyl) methane, 2,7-dimaleimidofluorene, N, N ′-(1,3-phenylene) bismaleimide, N, N ′-(1,3- (4 -Methylphenylene)) bismaleimide, bis (4-maleimidophenyl) sulfone, bis (4-maleimidophenyl) sulfide, bis (4-maleimidophenyl) ether, 1,3-bis (3-maleimidophenoxy) benzene, 1,3-bis (3- (3-maleimidophenoxy) phenoxy) benzene, bis (4-maleimidophenyl)
- bis (3-ethyl-5-methyl-4-maleimidophenyl) methane is preferably used from the viewpoint of further reducing the hygroscopicity and the thermal expansion coefficient.
- 2,2-bis (4- (4-maleimidophenoxy) phenyl) propane is used as the maleimide group-containing compound. It is preferable to use it.
- component (A2) for example, a compound represented by the following formula (VI) is preferable.
- a 4 represents a residue represented by the following formula (VII), (VIII), (IX) or (X), and A 5 represents a residue represented by the following formula (XI).
- a 4 is preferably a residue represented by the following formula (VII), (VIII) or (IX).
- each R 10 independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms or a halogen atom.
- R 11 and R 12 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms or a halogen atom
- a 6 represents an alkylene group or alkylidene group having 1 to 5 carbon atoms.
- R 13 and R 14 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms or a halogen atom
- a 7 represents an alkylene group having 1 to 5 carbon atoms
- An isopropylidene group, an ether group, a sulfide group, a sulfonyl group, a carbonyl group or a single bond is shown.
- i is an integer of 1 to 10.
- R 15 and R 16 each independently represent a hydrogen atom or an aliphatic hydrocarbon group having 1 to 5 carbon atoms, and j is an integer of 1 to 8.
- R 17 and R 18 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, a hydroxyl group or a halogen atom
- a 8 represents , An alkylene group having 1 to 5 carbon atoms or an alkylidene group, an ether group, a sulfide group, a sulfonyl group, a carbonyl group, a fluorenylene group, a single bond, a residue represented by the following formula (XI-1), or a group represented by the following formula (XI- The residue represented by 2) is shown.
- R 19 and R 20 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms or a halogen atom, and A 9 represents an alkylene group having 1 to 5 carbon atoms.
- a 9 represents an alkylene group having 1 to 5 carbon atoms.
- each R 21 independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms or a halogen atom, and A 10 and A 11 each independently represent 1 to 5 carbon atoms.
- the maleimide group-containing compound is preferably used as a polyaminobismaleimide compound from the viewpoints of solubility in an organic solvent, high frequency characteristics, high adhesion to a conductor, moldability of a prepreg, and the like.
- the polyamino bismaleimide compound can be obtained, for example, by Michael addition reaction of a compound having two maleimide groups at the terminal and an aromatic diamine compound having two primary amino groups in the molecule in an organic solvent.
- the aromatic diamine compound having two primary amino groups in the molecule is not particularly limited.
- 4,4′-diaminodiphenylmethane and 4,4′-diamino-3,3′-dimethyl -Diphenylmethane is preferred. These may be used alone or in combination of two or more according to the purpose and application.
- the organic solvent used in producing the polyaminobismaleimide compound is not particularly limited, and examples thereof include alcohols such as methanol, ethanol, butanol, butyl cellosolve, ethylene glycol monomethyl ether, propylene glycol monomethyl ether; acetone, methyl ethyl ketone, methyl Ketones such as isobutyl ketone and cyclohexanone; aromatic hydrocarbons such as toluene, xylene and mesitylene; esters such as methoxyethyl acetate, ethoxyethyl acetate, butoxyethyl acetate and ethyl acetate; N, N-dimethylformamide, N, And nitrogen-containing compounds such as N-dimethylacetamide and N-methyl-2-pyrrolidone.
- alcohols such as methanol, ethanol, butanol, butyl cellosolve, ethylene glycol monomethyl ether, propylene glycol
- methyl ethyl ketone, cyclohexanone, propylene glycol monomethyl ether, N, N-dimethylformamide and N, N-dimethylacetamide are preferable from the viewpoint of solubility.
- the resin composition according to this embodiment may further contain a diamine compound.
- the diamine compound is not particularly limited.
- 1,3-bis [2- (4-aminophenyl) -2-propyl] benzene 4,4′-diaminodiphenylmethane or 4,4′-diamino-3,3′-dimethyl-diphenylmethane is preferred. These may be used alone or in combination of two or more according to the purpose and application.
- the resin composition of this embodiment may further contain a catalyst for promoting the curing of the component (A).
- the content of the catalyst is not particularly limited, but may be 0.1 to 5% by mass with respect to the total mass of the resin composition.
- a peroxide, an azo compound, or the like can be used as the catalyst.
- peroxide examples include dicumyl peroxide, dibenzoyl peroxide, 2-butanone peroxide, tert-butyl perbenzoate, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di (T-Butylperoxy) hexane, bis (tert-butylperoxyisopropyl) benzene and tert-butylhydroperoxide.
- azo compound examples include 2,2'-azobis (2-methylpropanenitrile), 2,2'-azobis (2-methylbutanenitrile) and 1,1'-azobis (cyclohexanecarbonitrile).
- the (B) non-halogen flame retardant according to the present embodiment may be referred to as the (B) component.
- the component (B) it is possible to obtain a resin composition that has no significant deterioration in high-frequency characteristics, has high adhesiveness with a conductor, and has flame retardancy. Furthermore, environmental load can be reduced.
- Non-halogen flame retardant is not particularly limited, but from the viewpoint of high frequency characteristics, phenol antioxidant, phosphite antioxidant, thioether antioxidant, phosphorus flame retardant, silicone flame retardant, metal hydroxide It is preferable to include at least one selected from the group consisting of a flame retardant.
- One type of non-halogen flame retardant may be used, or two or more types may be used in combination.
- the content of the non-halogen flame retardant is not particularly limited, but is 1 to 15 parts by mass with respect to 100 parts by mass of the solid content (resin component) of the resin composition excluding the inorganic filler described later from the viewpoint of high frequency characteristics. It is preferably 1 to 10 parts by mass, more preferably 2 to 10 parts by mass, and particularly preferably 2 to 8 parts by mass.
- the structure of the phenolic antioxidant is not particularly limited.
- 2,6-di-t-butyl-p-cresol, butylated hydroxyanisole, 2,6-t-butyl-4-ethyl Phenol, stearyl- ⁇ - (3,5-di-t-butyl-4-hydroxyphenyl) propionate 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-methylenebis (4 -Ethyl-6-t-butylphenol), 4,4'-thiobis (3-methyl-6-t-butylphenol), 4,4'-butylidenebis (3-methyl-6-t-butylphenol), 3,9- Bis [1,1-dimethyl-2- [ ⁇ - (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy] ethyl] 2,4,8,10-te Traoxaspiro [5.5] undecane, 1,1,3-tris (2-methyl-4-hydroxy-5-
- the content of the phenolic antioxidant is not particularly limited, but is preferably 1 to 10 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later, from the viewpoint of high frequency characteristics.
- the amount is more preferably 2 to 10 parts by mass, and further preferably 2 to 8 parts by mass.
- the phosphite antioxidant is not particularly limited.
- the content of the phosphite antioxidant is not particularly limited, but is preferably 1 to 10 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later from the viewpoint of high frequency characteristics.
- the amount is more preferably 2 to 10 parts by mass, and further preferably 2 to 8 parts by mass.
- the structure of the thioether-based antioxidant is not particularly limited.
- dilauryl 3,3′-thiodipropionate, dimyristyl 3,3′-thiodipropionate, distearyl 3,3′-thio Examples include dipropionate.
- dilauryl 3,3'-thiodipropionate is more preferable from the viewpoint of high frequency characteristics.
- the content of the thioether-based antioxidant is not particularly limited, but from the viewpoint of high-frequency characteristics, it is preferably 1 to 10 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later.
- the amount is more preferably 2 to 10 parts by mass, and further preferably 2 to 8 parts by mass.
- the structure of the phosphorus-based flame retardant is not particularly limited, and examples thereof include triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl di-2,6-xylenyl phosphate, resorcinol Aromatic phosphoric acid such as bis (diphenyl phosphate), 1,3-phenylene bis (di-2,6-xylenyl phosphate), bisphenol A-bis (diphenyl phosphate), 1,3-phenylene bis (diphenyl phosphate) Ester compounds; phosphonic acid esters such as divinyl phenylphosphonate, diallyl phenylphosphonate and bis (1-butenyl) phenylphosphonate; phosphinic acid esters such as phenyl diphenylphosphinate and methyl diphenylphosphinate; Phosphazene compounds such as su (2-
- the group consisting of aromatic phosphate ester compounds, phosphazene compounds, phosphinic acid esters, metal salts of phosphinic acid compounds, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and derivatives thereof Use of at least one selected from the above is more preferable because various properties such as high-frequency properties and flame retardancy can be achieved.
- the content of the phosphorus-based flame retardant is not particularly limited, but is preferably 1 to 15 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later from the viewpoint of high frequency characteristics. More preferably, it is ⁇ 10 parts by mass, and further preferably 2 to 8 parts by mass.
- the structure and shape of the silicone flame retardant are not particularly limited.
- silicone oligomer for example, KC-895 [low polymer silicone oligomer, manufactured by Shin-Etsu Silicone Co., Ltd., trade name]
- silicone powder for example, KMP-605 [spherical silicone powder, trade name of Shin-Etsu Silicone Co., Ltd.]
- siloxane eg, KMP-605 [spherical silicone powder, trade name of Shin-Etsu Silicone Co., Ltd.]
- silicone oil eg, KF -96 [dimethyl silicone oil, manufactured by Shin-Etsu Silicone Co., Ltd., trade name]
- silicone powder is more preferable because various properties such as high-frequency properties and flame retardancy can be achieved.
- the blending amount is preferably 1 to 15 parts by mass, preferably 2 to 10 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later, from the viewpoint of high frequency characteristics. Is more preferably 2 to 8 parts by mass.
- the metal hydroxide flame retardant is not particularly limited, and examples of the metal hydroxide flame retardant include magnesium hydroxide and aluminum hydroxide. Among these, it is more preferable to use aluminum hydroxide because various properties such as high-frequency properties and flame retardancy can be achieved.
- the blending amount is preferably 1 to 15 parts by mass, preferably 2 to 10 parts by mass with respect to 100 parts by mass of the solid content of the resin composition excluding the inorganic filler described later, from the viewpoint of high frequency characteristics. Is more preferably 2 to 8 parts by mass.
- non-halogen flame retardants may be used alone or in combination of two or more according to the purpose and application.
- the resin composition of this embodiment can further contain a thermosetting resin different from the component (A) and the component (A2).
- the compound which can correspond to (A) component or (A2) component shall not belong to (C) thermosetting resin.
- a thermosetting resin an epoxy resin, cyanate ester resin, etc. are mentioned, for example.
- thermosetting resin When an epoxy resin is contained as the thermosetting resin, it is not particularly limited.
- Biphenyl type epoxy resin, biphenyl aralkyl type epoxy resin, dicyclopentadiene type epoxy resin, dihydroanthracene type epoxy resin and the like can be mentioned. These may be used alone or in combination of two or more. Among these, it is preferable to use a naphthalene skeleton containing type epoxy resin or a biphenyl aralkyl type epoxy resin from the viewpoint of high frequency characteristics and thermal expansion characteristics.
- thermosetting resin When a cyanate ester resin is contained as the thermosetting resin, it is not particularly limited.
- 2,2-bis (4-cyanatophenyl) propane in consideration of the low cost, the total balance of high frequency characteristics and other characteristics.
- the resin composition of this embodiment may further contain (C) a curing agent for a thermosetting resin.
- the curing agent is not particularly limited.
- polyamine compounds such as diethylenetriamine, triethylenetetramine, diaminodiphenylmethane, m-phenylenediamine, dicyandiamide; bisphenol A, phenol novolac resin, cresol novolac resin, bisphenol A
- polyphenol compounds such as novolak resins and phenol aralkyl resins
- acid anhydrides such as phthalic anhydride and pyromellitic anhydride
- various carboxylic acid compounds and various active ester compounds.
- the curing agent is not particularly limited, and examples thereof include various monophenol compounds, various polyphenol compounds, various amine compounds, various alcohol compounds, various acid anhydrides, various carboxylic acid compounds, and the like. These may be used alone or in combination of two or more.
- thermosetting resin examples include various imidazoles which are latent thermosetting agents, BF 3 amine complexes, phosphorus curing accelerators, and the like.
- imidazoles and phosphorus curing accelerators are preferable from the viewpoints of storage stability of the resin composition, handleability of the semi-cured resin composition, and solder heat resistance.
- the resin composition of this embodiment may further contain an inorganic filler.
- an inorganic filler By arbitrarily containing an appropriate inorganic filler, it is possible to improve low thermal expansion characteristics, high elastic modulus, heat resistance, flame retardancy, and the like of the resin composition.
- the inorganic filler is not particularly limited.
- the particle size of the inorganic filler may be, for example, 0.01 to 20 ⁇ m or 0.1 to 10 ⁇ m.
- the particle diameter means an average particle diameter, and is a particle diameter at a point corresponding to a volume of 50% when a cumulative frequency distribution curve based on the particle diameter is obtained with the total volume of the particles being 100%.
- the average particle diameter can be measured with a particle size distribution measuring apparatus using a laser diffraction scattering method.
- the amount used is not particularly limited.
- the content of the inorganic filler is preferably 3 to 75% by volume with respect to the total solid content in the resin composition, and preferably 5 to 70% by volume. % Is more preferable.
- the content ratio of the inorganic filler in the resin composition is in the above range, good curability, moldability, and chemical resistance are easily obtained.
- a coupling agent can be used in combination as necessary for the purpose of improving the dispersibility of the inorganic filler and the adhesion with the organic component. It does not specifically limit as a coupling agent, For example, various silane coupling agents, a titanate coupling agent, etc. can be used. These may be used alone or in combination of two or more. Further, the amount of the coupling agent used is not particularly limited, and may be, for example, 0.1 to 5 parts by mass or 0.5 to 3 parts by mass with respect to 100 parts by mass of the inorganic filler to be used. If it is this range, there will be little fall of various characteristics and it will become easy to exhibit the feature by use of an inorganic filler effectively.
- a coupling agent When a coupling agent is used, it may be a so-called integral blend treatment method in which an inorganic filler is added to the resin composition and then the coupling agent is added, but the coupling agent is added to the inorganic filler in advance.
- a method using an inorganic filler surface-treated with a dry method or a wet method is preferable. By using this method, the characteristics of the inorganic filler can be expressed more effectively.
- the resin composition of the present embodiment may further contain a thermoplastic resin from the viewpoint of improving the handleability of the resin film.
- the type of the thermoplastic resin is not particularly limited, and the molecular weight is not limited, but the number average molecular weight (Mn) is preferably 200 to 60000 from the viewpoint of further improving the compatibility with the component (A).
- the thermoplastic resin is preferably a thermoplastic elastomer.
- the thermoplastic elastomer include saturated thermoplastic elastomers, and examples of the saturated thermoplastic elastomer include chemically modified saturated thermoplastic elastomers and non-modified saturated thermoplastic elastomers.
- the chemically-modified saturated thermoplastic elastomer include styrene-ethylene-butylene copolymer modified with maleic anhydride.
- Specific examples of the chemically modified saturated thermoplastic elastomer include Tuftec M1911, M1913, and M1943 (all trade names, manufactured by Asahi Kasei Corporation).
- examples of the non-modified saturated thermoplastic elastomer include non-modified styrene-ethylene-butylene copolymer.
- Specific examples of the unmodified saturated thermoplastic elastomer include Tuftec H1041, H1051, H1043, and H1053 (all trade names, manufactured by Asahi Kasei Corporation).
- the saturated thermoplastic elastomer preferably has a styrene unit in the molecule.
- the styrene unit refers to a unit derived from a styrene monomer in a polymer
- the saturated thermoplastic elastomer refers to an aliphatic hydrocarbon portion other than the aromatic hydrocarbon portion of the styrene unit.
- the content ratio of the styrene unit in the saturated thermoplastic elastomer is not particularly limited, but is preferably 10 to 80% by mass and preferably 20 to 70% by mass with respect to the total mass of the saturated thermoplastic elastomer. More preferably. When the content ratio of the styrene unit is within the above range, the film appearance, heat resistance and adhesiveness tend to be excellent.
- a specific example of a saturated thermoplastic elastomer having a styrene unit in the molecule is a styrene-ethylene-butylene copolymer.
- the styrene-ethylene-butylene copolymer can be obtained, for example, by hydrogenating an unsaturated double bond of a structural unit derived from butadiene of the styrene-butadiene copolymer.
- the content of the thermoplastic resin is not particularly limited, but from the viewpoint of further improving the dielectric properties, the total solid content of the resin composition is preferably 0.1 to 15% by mass, preferably 0.3 to 10% by mass. % Is more preferable, and 0.5 to 5% by mass is still more preferable.
- Brominated flame retardants include brominated epoxy resins such as brominated bisphenol A type epoxy resins and brominated phenol novolac type epoxy resins; hexabromobenzene, pentabromotoluene, ethylenebis (pentabromophenyl), ethylenebistetrabromophthalimide 1,2-dibromo-4- (1,2-dibromoethyl) cyclohexane, tetrabromocyclooctane, hexabromocyclododecane, bis (tribromophenoxy) ethane, brominated polyphenylene ether, brominated polystyrene, Brominated flame retardants such as 6-tris (tribromophenoxy) -1,3,5-triazine; tribromophenyl maleimide, tribromophenyl acrylate, tribromophenyl methacrylate, tetrabromobisphenol A type Me
- the resin composition of the present embodiment can be obtained by uniformly dispersing and mixing the above-described components, and the preparation means, conditions, and the like are not particularly limited. For example, after stirring and mixing various components of a predetermined blending amount sufficiently uniformly with a mixer, etc., the mixture is kneaded using a mixing roll, an extruder, a kneader, a roll, an extruder, etc., and the obtained kneaded product is cooled and The method of pulverizing is mentioned.
- the kneading type is not particularly limited.
- the relative dielectric constant of the cured product of the resin composition of the present embodiment is not particularly limited, but the relative dielectric constant at 10 GHz is preferably 3.6 or less from the viewpoint of being suitably used in a high frequency band. Is more preferable, and it is still more preferable that it is 3.0 or less.
- the lower limit of the relative dielectric constant is not particularly limited, but may be about 1.0, for example.
- the dielectric loss tangent of the cured product of the resin composition of the present embodiment is preferably 0.004 or less, and more preferably 0.003 or less.
- the lower limit of the relative dielectric constant is not particularly limited, and may be, for example, about 0.0001.
- the relative dielectric constant and dielectric loss tangent can be measured by the methods shown in the following examples.
- the thermal expansion coefficient of the cured product of the resin composition of the present embodiment is preferably 10 to 90 ppm / ° C, more preferably 10 to 45 ppm / ° C. More preferably, it is ⁇ 40 ppm / ° C.
- the thermal expansion coefficient can be measured according to IPC-TM-650 2.4.24.
- the flame retardancy of the cured product of the resin composition of the present embodiment is preferably V-0 when measured according to the UL-94 vertical test method.
- a resin film can be produced using the above resin composition.
- the resin film refers to an uncured or semi-cured film-shaped resin composition.
- the manufacturing method of a resin film is not limited, For example, it can obtain by drying the resin layer formed by apply
- the resin film in a semi-cured state is further heat-cured by heating in a heating furnace at a temperature of, for example, 170 to 250 ° C., preferably 185 to 230 ° C. for 60 to 150 minutes. it can.
- the thickness of the resin film according to this embodiment is not particularly limited, but is preferably 1 to 200 ⁇ m, more preferably 2 to 180 ⁇ m, and still more preferably 3 to 150 ⁇ m. By setting the thickness of the resin film in the above range, it is easy to achieve both a reduction in thickness of the printed wiring board obtained by using the resin film according to the present embodiment and good high frequency characteristics.
- the support substrate is not particularly limited, but is preferably at least one selected from the group consisting of glass, metal foil, and PET film.
- a resin film is provided with a support base material, it exists in the tendency for the storage property and the handleability at the time of using for manufacture of a printed wiring board to become favorable. That is, the resin film according to the present embodiment can take the form of a support with a resin layer including a resin layer containing the resin composition of the present embodiment and a support base material, and when used, a support base. It may be peeled from the material.
- the prepreg of this embodiment is comprised from the above-mentioned resin composition and a fiber base material.
- the prepreg of the present embodiment is obtained, for example, by applying the resin composition of the present embodiment to a fiber substrate that is a reinforcing substrate and drying the applied resin composition. Further, the prepreg of the present embodiment may be obtained by impregnating the fiber base material into the resin composition of the present embodiment and then drying the impregnated resin composition. Specifically, the fiber base material to which the resin composition is adhered is heated and dried in a drying furnace at a temperature of usually 80 to 200 ° C. for 1 to 30 minutes to obtain a prepreg in which the resin composition is semi-cured. It is done. From the viewpoint of good moldability, it is preferable to apply or impregnate the resin composition to the fiber substrate so that the resin content in the prepreg after drying is 30 to 90% by mass.
- a sheet-like fiber base material is preferable.
- a sheet-like fiber base material the well-known thing used for the laminated board for various electrical insulation materials is used, for example.
- the material include inorganic fibers such as E glass, NE glass, S glass, and Q glass; organic fibers such as polyimide, polyester, and tetrafluoroethylene.
- the sheet-like fiber base material those having a shape such as woven fabric, non-woven fabric, and chopped strand mat can be used.
- the thickness of the sheet-like fiber base material is not particularly limited, and for example, a thickness of 0.02 to 0.5 mm can be used.
- the sheet-like fiber base material what is surface-treated with a coupling agent or the like, or mechanically subjected to fiber opening treatment is impregnated with a resin composition, heat resistance when used as a laminate, It is preferable from the viewpoint of moisture absorption resistance and processability.
- the laminated board which has the resin layer containing the hardened
- a metal-clad laminate can be produced using the resin film, the support with a resin layer, or a prepreg.
- the manufacturing method of the metal-clad laminate is not limited.
- one or a plurality of the resin films or prepregs of this embodiment are stacked, and a metal foil serving as a conductor layer is disposed on at least one surface.
- a metal foil is provided on at least one surface of a resin layer or prepreg to be an insulating layer by heating and pressing at a temperature of 185 ° C., preferably 185 to 230 ° C. and a pressure of 0.5 to 5.0 MPa for 60 to 150 minutes.
- a metal-clad laminate is obtained.
- the heating and pressurization can be performed, for example, under a condition where the degree of vacuum is 10 kPa or less, preferably 5 kPa or less, and is preferably performed in vacuum from the viewpoint of increasing efficiency. Heating and pressurization are preferably carried out from the start for 30 minutes to the molding end time.
- a multilayer printed wiring board provided with the resin layer containing the hardened
- the upper limit of the number of circuit layers is not particularly limited, and may be 3 to 20 layers.
- a multilayer printed wiring board can also be manufactured using said resin film, a support body with a resin layer, a prepreg, or a metal-clad laminated board, for example.
- the method for producing a multilayer printed wiring board is not particularly limited. For example, first, a resin film is disposed on one or both sides of a core substrate subjected to circuit formation processing, or a resin film is disposed between a plurality of core substrates. Place and apply pressure and heat laminate molding, or press and heat press molding to bond each layer, then perform circuit formation processing by laser drilling, drilling, metal plating, metal etching, etc. Thus, a multilayer printed wiring board can be manufactured.
- the resin film has a support base (when using a support with a resin layer), the support base is peeled off before placing the resin film on the core substrate or between the core substrates, or The resin layer can be peeled off after being attached to the core substrate.
- FIG. 1 is a diagram schematically showing a manufacturing process of a multilayer printed wiring board according to the present embodiment.
- the method for producing a multilayer printed wiring board according to the present embodiment includes (a) a step of forming a resin layer by laminating a resin film on an inner layer circuit board (hereinafter referred to as “step (a)”), and (b) a resin.
- step (a) a step of curing the layer by heating and pressing
- step (c) a step of forming an antenna circuit layer on the cured resin layer
- step (a) the resin film 12 according to the present embodiment is laminated on the inner circuit board 11 to form a resin layer made of the resin film 12.
- the laminating method is not particularly limited, and examples thereof include a multi-stage press, a vacuum press, an atmospheric laminator, a method of laminating using a laminator that is heated and pressurized under vacuum, and a method using a laminator that is heated and pressurized under vacuum is preferable. .
- Lamination conditions are not particularly limited, but the pressure bonding temperature is 70 to 130 ° C., the pressure bonding pressure is 1 to 11 kgf / cm 2 , and lamination is preferably performed under reduced pressure or vacuum.
- the laminate may be a batch type or a continuous type in a roll.
- the inner layer circuit board 11 is not particularly limited, and a glass epoxy board, a metal board, a polyester board, a polyimide board, a BT resin board, a thermosetting polyphenylene ether board, or the like can be used.
- the circuit surface of the surface on which the resin film of the inner layer circuit board 11 is laminated may be roughened in advance.
- the number of circuit layers of the inner layer circuit board 11 is not limited. In FIG. 1, the inner circuit board has six layers. However, the number of layers is not limited. For example, when a printed wiring board for millimeter wave radar is manufactured, it can be freely selected from 2 to 20 layers depending on the design. can do.
- the multilayer printed wiring board of this embodiment can be applied to the production of millimeter wave radar. That is, a printed wiring board for millimeter wave radar comprising a resin layer containing a cured product of the resin composition of the present embodiment and a circuit layer can be produced.
- a metal foil 13 may be further laminated on the resin film 12 to form the metal layer 13a.
- the metal foil include copper, aluminum, nickel, zinc and the like, and copper is preferable from the viewpoint of conductivity.
- the metal foil may be an alloy.
- the copper alloy include a high purity copper alloy to which a small amount of beryllium or cadmium is added.
- the thickness of the metal foil is preferably 3 to 200 ⁇ m, more preferably 5 to 70 ⁇ m.
- the inner layer circuit board 11 and the resin layer 12a laminated in the step (a) are heated and pressurized to be thermally cured.
- the conditions are not particularly limited, but a temperature of 100 ° C. to 250 ° C., a pressure of 0.2 to 10 MPa, and a time of 30 to 120 minutes are preferable, and 150 ° C. to 220 ° C. is more preferable.
- the antenna circuit layer 14 is formed on the resin layer 12a.
- the method for forming the antenna circuit layer 14 is not particularly limited, and for example, the antenna circuit layer 14 may be formed by an etching method such as a subtractive method or a semi-additive method.
- an etching resist layer having a shape corresponding to a desired pattern shape is formed on the metal layer 13a, and a portion of the metal layer from which the resist has been removed is dissolved and removed by a chemical solution by subsequent development processing.
- a chemical solution for example, a copper chloride solution, an iron chloride solution, or the like can be used.
- a metal film is formed on the surface of the resin layer 12a by an electroless plating method, a plating resist layer having a shape corresponding to a desired pattern is formed on the metal film, and then the metal layer is formed by an electrolytic plating method. After the formation, an unnecessary electroless plating layer is removed with a chemical solution or the like to form a desired circuit layer.
- holes such as via holes 15 may be formed in the resin layer 12a as necessary.
- the hole forming method is not limited, but an NC drill, carbon dioxide laser, UV laser, YAG laser, plasma, or the like can be applied.
- the inner layer circuit board 11 can also be manufactured by steps (p) to (r) shown in FIG.
- FIG. 2 is a diagram schematically showing a manufacturing process of the inner layer circuit board. That is, the method for manufacturing a multilayer printed wiring board according to the present embodiment includes a step (p), a step (q), a step (r), a step (a), a step (b), and a step (c). Also good.
- steps (p) to (r) will be described.
- the core substrate 41 and the prepreg 42 are laminated.
- the core substrate for example, a glass epoxy substrate, a metal substrate, a polyester substrate, a polyimide substrate, a BT resin substrate, a thermosetting polyphenylene ether substrate, or the like can be used.
- the prepreg include “GWA-900G”, “GWA-910G”, “GHA-679G”, “GHA-679G (S)”, “GZA-71G”, “GEA-75G” (manufactured by Hitachi Chemical Co., Ltd.). In either case, the trade name) can be used.
- the laminated body of the core substrate 41 and the prepreg 42 obtained in the step (p) is heated and pressurized.
- the heating temperature is not particularly limited, but is preferably 120 to 230 ° C, more preferably 150 to 210 ° C.
- the pressure to be applied is not particularly limited, but is preferably 1 to 5 MPa, more preferably 2 to 4 MPa.
- the heating time is not particularly limited, but is preferably 30 to 120 minutes. As a result, it is possible to obtain an inner layer circuit board having excellent dielectric characteristics, mechanical and electrical connection reliability under high temperature and high humidity.
- a through hole 43 is formed in the inner layer circuit board as necessary.
- the formation method of the through hole 43 is not particularly limited, and may be the same as the step of forming the antenna circuit layer described above, or a known method may be used.
- the multilayer printed wiring board of this embodiment can be manufactured by the above process. Further, the steps (a) to (c) may be further repeated using the printed wiring board manufactured through the above steps as an inner circuit board.
- FIG. 3 is a diagram schematically showing a manufacturing process of a multilayer printed wiring board using the multilayer printed wiring board manufactured by the process shown in FIG. 1 as an inner layer circuit board.
- FIG. 3A corresponds to FIG. 1A
- FIG. 3B corresponds to FIG. 1B
- FIG. 3C corresponds to FIG. 1C.
- FIG. 3A a resin film 22 is laminated on the inner circuit board 21 to form a resin layer 22a, and a metal foil 23 is laminated on the resin film 22 as necessary to form a metal layer 23a.
- 3B is a step of curing the resin layer 22a by heating and pressing
- FIG. 3C is a step of forming the antenna circuit layer 24 on the cured resin layer.
- the number of resin layers laminated on the inner circuit board is one or two for the purpose of forming an antenna circuit pattern or the like.
- the number of resin layers is not limited to this.
- the number of layers may be three or more.
- a resin composition containing a compound having a maleimide group, a divalent group having at least two imide bonds, and a saturated or unsaturated divalent hydrocarbon group. Since the resin layer is formed by using the layer, a laminate can be manufactured without providing an adhesive layer in addition to the layer having excellent high frequency characteristics. Thereby, the simplification of a process and the further improvement effect of a high frequency characteristic are acquired.
- a resin film, a support with a resin layer, a prepreg, a laminated board, and a multilayer printed wiring board using the resin composition of the present embodiment as described above can be suitably used for electronic devices that handle high-frequency signals of 1 GHz or more. In particular, it can be suitably used for electronic devices that handle high-frequency signals of 10 GHz or higher.
- the estimated structure of the compounds (BMI-3000, BMI-5000) used as the component (A) is as shown in the following formula (XII-3).
- the appearance was evaluated visually according to the following criteria. ⁇ : There is no unevenness, streaks, etc. on the surface of the semi-cured resin film. X: The surface of the semi-cured resin film has unevenness, streaks, etc. in an infeasible state and lacks surface smoothness.
- the handleability was evaluated according to the following criteria by visual and tactile sensations.
- a low profile copper foil having a thickness of 18 ⁇ m (M surface Rz: 3 ⁇ m, manufactured by Furukawa Electric Co., Ltd., trade name) “F3-WS”) is disposed so that the roughened surface (M surface) is in contact with it, and a mirror plate is placed thereon, and heated and pressed under press conditions of 200 ° C./3.0 MPa / 70 minutes, A double-sided metal-clad cured resin film (thickness: 0.1 mm) was produced.
- Bending resistance was evaluated according to the following criteria by bending 180 ° of the outer layer copper foil of the double-sided metal-clad cured resin film. ⁇ : No cracking or cracking occurs when bent. X: When bent, cracks or cracks occur in an inoperable state.
- the dielectric constant and dielectric loss tangent which are dielectric properties, are obtained by etching the outer layer copper foil of a double-sided metal-clad cured resin film and cutting it into a length of 60 mm, a width of 2 mm, and a thickness of about 1 mm by a cavity resonator perturbation method. It was measured.
- Vector type network analyzer E8364B manufactured by Agilent Technologies Co., Ltd., CP129 (10 GHz band resonator) and CP137 (20 GHz band resonator) manufactured by Kanto Electronics Application Co., Ltd., and CPMA-V2 for the measurement program. Each was used. The conditions were a frequency of 10 GHz and a measurement temperature of 25 ° C.
- Copper foil peeling strength The copper foil peel strength was measured in accordance with the copper clad laminate test standard JIS-C-6481. The measurement temperature was 25 ° C.
- Solder heat resistance is determined by etching a copper foil on one side of a double-sided metal-clad cured resin film and cutting it into 50 mm squares, using the test pieces as normal and pressure cooker test (PCT) equipment (conditions: 121 ° C., 2.2 At atmospheric pressure), after processing for a predetermined time (1, 3, 5 hours), float on molten solder at 288 ° C. for 20 seconds, and the appearance of each of the three cured resin films with different processing times is based on the following criteria: Visually evaluated. In Table 4, Table 5 and Table 6, the one-hour processing was represented as PCT-1h, the three-hour processing was represented as PCT-3h, and the five-hour processing was performed.
- PCT normal and pressure cooker test
- CTE Coefficient of thermal expansion
- the appearance As is apparent from the results shown in Tables 4 and 5, according to the semi-cured resin films produced using the resin compositions of Examples 1 to 19, the appearance (surface uniformity), the handleability (tackiness) It was confirmed that there was no problem in cracking, powder falling, etc., and the multilayer formability was also good.
- the cured resin films, which are cured products of the resin compositions of Examples 1 to 19, are all excellent in relative dielectric constant and dielectric loss tangent, solder heat resistance, copper foil peeling strength, and flame retardancy. was also excellent. In addition, since it does not contain a halogen-based compound, the load on the environment is small.
- the cured resin film which is a cured product of the resin composition of Comparative Example 1
- the flame retardancy was inferior.
- the semi-cured resin film of the resin composition of Comparative Example 2 was cracked and the film handleability was poor, and the cured resin film as the cured product was excellent in flame retardancy as in Examples 1 to 19.
- the relative dielectric constant and dielectric loss tangent were both inferior to those of Examples 1 to 19.
- the resin composition of the present invention expresses various characteristics required for printed wiring boards and excellent high-frequency characteristics, an electronic device, a mobile communication device, a base station device, and a server that handle high-frequency signals of 1 GHz or more or 10 GHz or more It is useful as a member / part for printed wiring boards used in network-related electronic devices such as routers and various electronic devices such as large computers.
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Abstract
Description
本明細書において、高周波領域とは、0.3GHz~300GHzを指し、特にミリ波レーダーに用いられる周波数領域は3GHz~300GHzを指すものとする。本明細書において、「~」を用いて示された数値範囲は、「~」の前後に記載されている数値をそれぞれ最小値及び最大値として含む範囲を示す。本明細書には段階的に記載されている数値範囲において、ある段階の数値範囲の上限値又は下限値は、他の段階の数値範囲の上限値又は下限値に置き換えてもよい。本明細書に記載されている数値範囲において、その数値範囲の上限値又は下限値は、実施例に示されている値に置き換えてもよい。「A又はB」とは、A及びBのどちらか一方を含んでいればよく、両方とも含んでいてもよい。本明細書において、組成物中の各成分の含有量は、組成物中に各成分に該当する物質が複数存在する場合、特に断らない限り、組成物中に存在する複数の物質の合計量を意味する。
本実施形態の樹脂組成物は、(A)マレイミド基、少なくとも2つのイミド結合を有する2価の基及び飽和又は不飽和の2価の炭化水素基を有する化合物と、(B)非ハロゲン系難燃剤と、を含有する。
本実施形態に係る(a)マレイミド基、(b)少なくとも2つのイミド結合を有する2価の基及び(c)飽和又は不飽和の2価の炭化水素基を有する化合物を(A)成分ということがある。また、(a)マレイミド基を構造(a)、(b)少なくとも2つのイミド結合を有する2価の基を構造(b)、(c)飽和又は不飽和の2価の炭化水素基を構造(c)ということがある。(A)成分を用いることで、高周波特性及び導体との高い接着性を有する樹脂組成物を得ることができる。
ポンプ:L-6200型[株式会社日立ハイテクノロジーズ製]
検出器:L-3300型RI[株式会社日立ハイテクノロジーズ製]
カラムオーブン:L-655A-52[株式会社日立ハイテクノロジーズ製]
ガードカラム及びカラム:TSK Guardcolumn HHR-L+TSKgel G4000HHR+TSKgel G2000HHR[すべて東ソー株式会社製、商品名]
カラムサイズ:6.0×40mm(ガードカラム)、7.8×300mm(カラム)
溶離液:テトラヒドロフラン
試料濃度:30mg/5mL
注入量:20μL
流量:1.00mL/分
測定温度:40℃
本実施形態の樹脂組成物は、(A)成分とは異なるマレイミド基含有化合物を更に含有することができる。該マレイミド基含有化合物を(A2)成分ということがある。なお、(A)成分及び(A2)成分の双方に該当し得る化合物は、(A)成分に帰属するものとする。(A2)成分を用いることで、樹脂組成物は、特に低熱膨張特性に優れるものとなる。すなわち、本実施形態の樹脂組成物は、(A)成分と(A2)成分を併用することにより、良好な誘電特性を維持しつつ、低熱膨張特性等を更に向上させることができる。この理由として、(A)成分と(A2)成分とを含有する樹脂組成物から得られる硬化物は、低誘電特性を備える(A)成分からなる構造単位と、低熱膨張である(A2)成分からなる構造単位とを備えるポリマーを含有するためだと推測される。
本実施形態に係る樹脂組成物には、ジアミン化合物を更に含有してもよい。ジアミン化合物は特に限定されないが、例えば、4,4’-ジアミノジフェニルメタン、4,4’-ジアミノ-3,3’-ジメチル-ジフェニルメタン、2,2’-ジメチル-4,4’-ジアミノビフェニル、2,2-ビス(4-(4-アミノフェノキシ)フェニル)プロパン、4,4’-[1,3-フェニレンビス(1-メチルエチリデン)]ビスアニリン、4,4’-[1,4-フェニレンビス(1-メチルエチリデン)]ビスアニリン、1,3-ビス[2-(4-アミノフェニル)-2-プロピル]ベンゼン等が挙げられる。これらは1種類を単独で用いても、2種類以上を併用してもよい。
本実施形態の樹脂組成物は、(A)成分の硬化を促進するための触媒を更に含有してもよい。触媒の含有量は特に限定されないが、樹脂組成物の全質量に対して0.1~5質量%であってもよい。触媒としては、例えば、過酸化物、アゾ化合物等を用いることができる。
本実施形態に係る(B)非ハロゲン系難燃剤を(B)成分ということがある。(B)成分を用いることで、高周波特性の大幅な悪化がなく導体との高い接着性を有し、かつ、難燃性を有する樹脂組成物を得ることができる。さらに、環境負荷を低減することができる。
本実施形態の樹脂組成物は、(A)成分及び(A2)成分とは異なる熱硬化性樹脂を更に含有することができる。なお、(A)成分又は(A2)成分に該当し得る化合物は、(C)熱硬化性樹脂に帰属しないものとする。(C)熱硬化性樹脂としては、例えば、エポキシ樹脂、シアネートエステル樹脂等が挙げられる。(C)熱硬化性樹脂を含むことで、樹脂組成物の低熱膨張特性等を更に向上させることができる。
本実施形態の樹脂組成物は、(C)熱硬化性樹脂の硬化剤を更に含有してもよい。これにより、樹脂組成物の硬化物を得る際の反応を円滑に進めることができるとともに、得られる樹脂組成物の硬化物の物性を適度に調節することが可能となる。
本実施形態の樹脂組成物には、(C)熱硬化性樹脂の種類に応じて硬化促進剤を更に配合してもよい。エポキシ樹脂の硬化促進剤としては、例えば、潜在性の熱硬化剤である各種イミダゾール類、BF3アミン錯体、リン系硬化促進剤等が挙げられる。硬化促進剤を配合する場合、樹脂組成物の保存安定性、半硬化の樹脂組成物の取扱性及びはんだ耐熱性の観点から、イミダゾール類及びリン系硬化促進剤が好ましい。
本実施形態の樹脂組成物は、無機充填剤を更に含有してもよい。任意に適切な無機充填剤を含有させることで、樹脂組成物の低熱膨張特性、高弾性率性、耐熱性、難燃性等を向上させることができる。無機充填剤としては特に制限されないが、例えば、シリカ、アルミナ、酸化チタン、マイカ、ベリリア、チタン酸バリウム、チタン酸カリウム、チタン酸ストロンチウム、チタン酸カルシウム、炭酸アルミニウム、水酸化マグネシウム、水酸化アルミニウム、ケイ酸アルミニウム、炭酸カルシウム、ケイ酸カルシウム、ケイ酸マグネシウム、窒化ケイ素、窒化ホウ素、焼成クレー、タルク、ホウ酸アルミニウム、炭化ケイ素等が挙げられる。これらは1種類を単独で用いても、2種類以上を併用してもよい。
本実施形態の樹脂組成物は、樹脂フィルムの取扱性を高める観点から、熱可塑性樹脂を更に含有してもよい。熱可塑性樹脂の種類は特に限定されず、分子量も限定されないが、(A)成分との相溶性をより高める点から、数平均分子量(Mn)が200~60000であることが好ましい。
本実施形態の樹脂組成物には、本発明の効果を損なわない範囲で、上記(B)成分以外の難燃剤を更に配合してもよい。難燃剤としては特に限定されないが、臭素系難燃剤が好適に用いられる。臭素系難燃剤としては、臭素化ビスフェノールA型エポキシ樹脂、臭素化フェノールノボラック型エポキシ樹脂等の臭素化エポキシ樹脂;ヘキサブロモベンゼン、ペンタブロモトルエン、エチレンビス(ペンタブロモフェニル)、エチレンビステトラブロモフタルイミド、1,2-ジブロモ-4-(1,2-ジブロモエチル)シクロヘキサン、テトラブロモシクロオクタン、ヘキサブロモシクロドデカン、ビス(トリブロモフェノキシ)エタン、臭素化ポリフェニレンエーテル、臭素化ポリスチレン、2,4,6-トリス(トリブロモフェノキシ)-1,3,5-トリアジン等の臭素化添加型難燃剤;トリブロモフェニルマレイミド、トリブロモフェニルアクリレート、トリブロモフェニルメタクリレート、テトラブロモビスフェノールA型ジメタクリレート、ペンタブロモベンジルアクリレート、臭素化スチレン等の不飽和二重結合基含有の臭素化反応型難燃剤などが挙げられる。これらの難燃剤は1種類を単独で用いてもよく、2種類以上を組み合わせて用いてもよい。
本実施形態では、上記の樹脂組成物を用いて、樹脂フィルムを製造することができる。なお、樹脂フィルムとは未硬化又は半硬化のフィルム状の樹脂組成物を指す。
本実施形態のプリプレグは、上述の樹脂組成物と、繊維基材とから構成される。
本実施形態によれば、上述の樹脂組成物の硬化物を含む樹脂層と、導体層と、を有する積層板を提供することができる。例えば、上記樹脂フィルム、樹脂層付き支持体又はプリプレグを用い、金属張積層板を製造することができる。
本実施形態によれば、上述の樹脂組成物の硬化物を含む樹脂層と、少なくとも3層の回路層とを備える、多層プリント配線板を提供することができる。回路層の数の上限値は特に限定されず、3層~20層であってもよい。多層プリント配線板は、例えば、上記の樹脂フィルム、樹脂層付き支持体、プリプレグ又は金属張積層板を用いて製造することもできる。
下記手順に従って、各種の樹脂組成物を調製した。実施例1~19及び比較例1~2の樹脂組成物の調製に用いた各原材料の使用量(質量部)は、表1、表2及び表3にまとめて示す。
(1)BMI-3000[Mw:約3000、Designer Molecules Inc.製、商品名]
(2)BMI-5000[Mw:約5000、Designer Molecules Inc.製、商品名]
(3)BMI-1000[ビス(4-マレイミドフェニル)メタン、大和化成工業株式会社製、商品名]
(4)BMI-4000[2,2-ビス(4-(4-マレイミドフェノキシ)フェニル)プロパン、大和化成工業株式会社製、商品名]
(5)ビスアニリンM[1,3-ビス(2-(4-アミノフェニル)-2-プロピル)ベンゼン、三井化学ファインケミカル株式会社製、商品名]
(6)シリカスラリー[球状溶融シリカ、株式会社アドマテックス製]
(7)AO-20[1,3,5-トリス(3’,5’-ジ-t-ブチル-4’-ヒドロキシベンジル)-sec-トリアジン-2,4,6-(1H,3H、5H)トリオン、株式会社ADEKA製、商品名]
(8)AO-30[1,1,3-トリス(2-メチル-4-ヒドロキシ-5-t-ブチルフェニル)ブタン、株式会社ADEKA製、商品名]
(9)AO-330[1,3,5-トリメチル-2,4,6-トリス(3,5-ジ-t-ブチル-4-ヒドロキシベンジル)ベンゼン、株式会社ADEKA製、商品名]
(10)PEP-8[サイクリックネオペンタンテトライルビス(オクタデシルホスファイト)、株式会社ADEKA製、商品名]
(11)PEP-36[サイクリックネオペンタンテトライルビス(2,6-ジ-t-ブチル-4-メチルフェニル)ホスファイト、株式会社ADEKA製、商品名]
(12)スミライザーTPL[ジラウリル3,3’-チオジプロピオネート、住友化学株式会社製、商品名]
(13)OP-935[ジアルキルホスフィン酸アルミニウム塩、2置換ホスフィン酸の金属塩、リン含有量:23.5質量%、クラリアント社製、商品名]
(14)PX-200[1,3-フェニレンビス(ジ-2,6-キシレニルホスフェート)、芳香族リン酸エステル、リン含有量:9質量%、大八化学工業株式会社製、商品名]
(15)HCA-HQ[10-(2,5-ジヒドロキシフェニル)-9,10-ジヒドロ-9-オキサ-10-ホスファフェナントレン-10-オキシド、環状有機リン化合物、リン含有量:9.6質量%、三光株式会社製、商品名]
(16)KMP-605[球状シリコーンパウダー、信越シリコーン株式会社製、商品名]
(17)AlOOH[ベーマイト型水酸化アルミニウム、金属水和物、密度3.0g/cm3、河合石灰工業株式会社製、商品名]
(18)パーブチルP[α,α’-ジ(ターシャリーブチルパーオキシ)ジイソプロピルベンゼン、日油株式会社製、商品名]
実施例及び比較例の半硬化樹脂フィルムの外観及び取扱性を評価した。結果を表4、表5及び表6に示す。
○:半硬化樹脂フィルムの表面にムラ、スジ等がない。
×:半硬化樹脂フィルムの表面に実施不可能な状態でムラ、スジ等があり、表面平滑性に欠ける。
(1)25℃における表面のべたつき(タック)の有無。
(2)カッターナイフで切断した際の状態の樹脂割れ又は粉落ちの有無。
○:上記(1)及び(2)のいずれも無い。
×:上記(1)及び(2)のいずれか一方でも有る。
上述の樹脂層付き支持体からPETフィルムを剥離した樹脂フィルムを2枚重ねた後、その両面に、厚さ18μmのロープロファイル銅箔(M面Rz:3μm、古河電気工業株式会社製、商品名「F3-WS」)をその粗化面(M面)が接するように配置し、その上に鏡板を乗せ、200℃/3.0MPa/70分のプレス条件で加熱及び加圧成形して、両面金属張硬化樹脂フィルム(厚さ:0.1mm)を作製した。
耐折曲げ性は、両面金属張硬化樹脂フィルムの外層銅箔をエッチングしたものを180度折り曲げることにより、下記基準により評価した。
○:折り曲げた際、割れ又はクラックが発生しない。
×:折り曲げた際、割れ又はクラックが実施不可能な状態で発生する。
誘電特性である比誘電率及び誘電正接は、両面金属張硬化樹脂フィルムの外層銅箔をエッチングし、長さ60mm、幅2mm、厚み約1mmに切断したものを試験片として空洞共振器摂動法により測定した。測定器にはアジレントテクノロジー社製ベクトル型ネットワークアナライザE8364B、空洞共振器には株式会社関東電子応用開発製CP129(10GHz帯共振器)及びCP137(20GHz帯共振器)、測定プログラムにはCPMA-V2をそれぞれ使用した。条件は、周波数10GHz、測定温度25℃とした。
銅箔引きはがし強さは、銅張積層板試験規格JIS-C-6481に準拠して測定した。測定温度は25℃とした。
はんだ耐熱性は、両面金属張硬化樹脂フィルムの片側の銅箔をエッチングし、50mm角に切断したものを試験片として、その常態及びプレッシャークッカーテスト(PCT)装置(条件:121℃、2.2気圧)において、所定時間(1、3、5時間)処理した後のものを288℃の溶融はんだ上に20秒間フロートし、処理時間が異なる3枚の硬化樹脂フィルムのそれぞれの外観を下記基準により目視で評価した。なお、表4、表5及び表6においては、1時間の処理を行ったものをPCT-1hと表記し、3時間の処理を行ったものをPCT-3hと表記し、5時間の処理を行ったものをPCT-5hと表記する。また、表中の「○(3/3)」との表記は、同時間の処理を行った三枚の試験片のうち三枚とも下記評価基準において○であったことを示す。
○:フィルム内部及びフィルムと銅箔間に膨れ又はミーズリングの発生が認められない。
×:フィルム内部及びフィルムと銅箔間に膨れ又はミーズリングの発生が見られる。
熱膨張係数(板厚方向)は、両面金属張硬化樹脂フィルムの両面の銅箔をエッチングし、5mm角に切断したものを試験片として、熱機械分析装置TMA(TAインスツルメント社製、Q400)(温度範囲:30~150℃、荷重:5g)により、IPC規格(IPC-TM-650 2.4.24)に準拠して測定した。
難燃性は、UL-94垂直試験法に準拠して評価した。なお、表6において、比較例1の難燃性評価結果の「×」との表記は、UL-94垂直試験法に準拠して評価した結果、V-2の評価基準を満たさなかったことを示す。
Claims (15)
- (A)マレイミド基、少なくとも2つのイミド結合を有する2価の基及び飽和又は不飽和の2価の炭化水素基を有する化合物と、(B)非ハロゲン系難燃剤と、を含有する、樹脂組成物。
- 前記(B)非ハロゲン系難燃剤がフェノール系酸化防止剤を含む、請求項1に記載の樹脂組成物。
- 前記(B)非ハロゲン系難燃剤がホスファイト系酸化防止剤を含む、請求項1に記載の樹脂組成物。
- 前記(B)非ハロゲン系難燃剤がチオエーテル系酸化防止剤を含む、請求項1に記載の樹脂組成物。
- 前記(B)非ハロゲン系難燃剤がリン系難燃剤を含む、請求項1に記載の樹脂組成物。
- 前記化合物とは異なるマレイミド基含有化合物を更に含有する、請求項1~7のいずれか一項に記載の樹脂組成物。
- 前記樹脂組成物の硬化物の10GHzでの比誘電率が3.6以下である、請求項1~8のいずれか一項に記載の樹脂組成物。
- 請求項1~9のいずれか一項に記載の樹脂組成物を含む樹脂層及び支持基材を備える、樹脂層付き支持体。
- 請求項1~9のいずれか一項に記載の樹脂組成物と、繊維基材と、から構成される、プリプレグ。
- 請求項1~9のいずれか一項に記載の樹脂組成物の硬化物を含む樹脂層と、導体層と、を有する積層板。
- 請求項1~9のいずれか一項に記載の樹脂組成物の硬化物を含む樹脂層と、少なくとも3層の回路層とを備える、多層プリント配線板。
- 請求項13に記載の多層プリント配線板のミリ波レーダーへの応用。
- 請求項1~9のいずれか一項に記載の樹脂組成物の硬化物を含む樹脂層と、回路層とを備える、ミリ波レーダー用プリント配線板。
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KR1020217040548A KR102478957B1 (ko) | 2016-07-20 | 2017-07-19 | 수지 조성물, 수지층 부착 지지체, 프리프레그, 적층판, 다층 프린트 배선판 및 밀리미터파 레이더용 프린트 배선판 |
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- 2017-07-19 SG SG11201900452QA patent/SG11201900452QA/en unknown
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- 2017-07-19 JP JP2018528835A patent/JP7107218B2/ja active Active
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- 2017-07-20 TW TW106124315A patent/TWI733861B/zh active
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CN109476901B (zh) | 2021-07-09 |
US20190241717A1 (en) | 2019-08-08 |
TWI790649B (zh) | 2023-01-21 |
CN113337117A (zh) | 2021-09-03 |
CN109476901A (zh) | 2019-03-15 |
KR102478957B1 (ko) | 2022-12-16 |
KR20190033072A (ko) | 2019-03-28 |
JP2022140464A (ja) | 2022-09-26 |
TWI733861B (zh) | 2021-07-21 |
JP7548277B2 (ja) | 2024-09-10 |
SG11201900452QA (en) | 2019-02-27 |
US10907029B2 (en) | 2021-02-02 |
CN113337117B (zh) | 2023-07-14 |
EP3489300A4 (en) | 2020-02-26 |
KR102340084B1 (ko) | 2021-12-17 |
JP2024086772A (ja) | 2024-06-28 |
EP3489300B1 (en) | 2022-03-09 |
JP7107218B2 (ja) | 2022-07-27 |
TW201829543A (zh) | 2018-08-16 |
JPWO2018016530A1 (ja) | 2019-05-09 |
KR20210154871A (ko) | 2021-12-21 |
TW202136379A (zh) | 2021-10-01 |
EP3489300A1 (en) | 2019-05-29 |
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