WO2012132923A1 - プリプレグ、及び金属箔張り積層板、並びにプリント配線板 - Google Patents
プリプレグ、及び金属箔張り積層板、並びにプリント配線板 Download PDFInfo
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- WO2012132923A1 WO2012132923A1 PCT/JP2012/056673 JP2012056673W WO2012132923A1 WO 2012132923 A1 WO2012132923 A1 WO 2012132923A1 JP 2012056673 W JP2012056673 W JP 2012056673W WO 2012132923 A1 WO2012132923 A1 WO 2012132923A1
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- WIPO (PCT)
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- dimethylnaphthalene
- prepreg
- naphthol
- resin
- epoxy resin
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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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/34—Condensation polymers of aldehydes, e.g. with phenols, ureas, melamines, amides or amines
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/36—Epoxy resins
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/465—Coatings containing composite materials
- C03C25/47—Coatings containing composite materials containing particles, fibres or flakes, e.g. in a continuous phase
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/48—Coating with two or more coatings having different compositions
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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
- C08G10/00—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or halogenated aromatic hydrocarbons only
- C08G10/02—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or halogenated aromatic hydrocarbons only of aldehydes
- C08G10/04—Chemically-modified polycondensates
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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
- C08G59/62—Alcohols or phenols
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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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/244—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using glass fibres
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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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
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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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/18—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or their halogen derivatives only
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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
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08L61/04, C08L61/18 and C08L61/20
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- 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
- 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
- H05K1/0366—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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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
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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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/07—Parts immersed or impregnated in a matrix
- B32B2305/076—Prepregs
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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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
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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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/18—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or their halogen derivatives only
-
- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08J2361/04, C08J2361/18, and C08J2361/20
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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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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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
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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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
- 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
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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
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2221—Coating or impregnation is specified as water proof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3382—Including a free metal or alloy constituent
- Y10T442/3407—Chemically deposited metal layer [e.g., chemical precipitation or electrochemical deposition or plating, etc.]
Definitions
- the present invention relates to a prepreg, a metal foil-clad laminate using the prepreg, and a printed wiring board.
- a prepreg and a metal foil-clad laminate obtained by impregnating or applying a resin composition containing an epoxy resin and a curing agent to a substrate are widely known.
- Various curing agents such as amines, acid anhydrides, and phenols are known.
- a phenol resin is used as a curing agent for the resin composition of the laminate for a semiconductor plastic package.
- a phenolic resin having a low number of hydroxyl groups with respect to the molecular weight is used as one having low water absorption.
- examples of such phenolic resins having low water absorption include biphenyl aralkyl type phenol resins, naphthol aralkyl type phenol resins, and novolac type phenol resins obtained by reacting naphthalene formaldehyde resins with phenols (for example, Patent Documents 1 to 5).
- the present invention has been made in view of the above-mentioned problems, and the object thereof is a prepreg having a low water absorption rate and a remarkable suppression of deterioration of insulation resistance over time, a metal foil-clad laminate using the prepreg, and An object of the present invention is to provide a printed wiring board using the metal foil-clad laminate. Another object of the present invention is to provide a prepreg having a low water absorption rate and an extremely low deterioration in insulation resistance over time, and also having excellent heat resistance, and a metal foil-clad laminate using the prepreg. And providing a printed wiring board using the metal foil-clad laminate.
- a resin composition containing an epoxy resin (B) and an inorganic filler (C), and the naphthol-modified dimethylnaphthalene formaldehyde resin (A) is (a) 1,5-dimethylnaphthalene, 1,6 At least one dimethylnaphthalene selected from the group consisting of dimethylnaphthalene, 2,6-dimethylnaphthalene, 1,7-dimethylnaphthalene, 1,8-dimethylnaphthalene and 2,7-dimethylnaphthalene; and (b) formaldehyde To a dimethylnaphthalene formaldehyde resin obtained by condensing in the presence of an acidic catalyst, (c) a naphthol compound represented by the following general formula
- the epoxy resin (B) is a biphenyl aralkyl type epoxy resin.
- the hydroxyl equivalent of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) is 300 to 600 g / eq. Is, The prepreg according to ⁇ 1> or ⁇ 2>.
- the inorganic filler (C) is silica; The prepreg according to any one of the above items ⁇ 1> to ⁇ 3>.
- the content of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) is 40 to 70 parts by mass with respect to 100 parts by mass in total of the component (A) and the component (B).
- the content of the inorganic filler (C) is 5 to 300 parts by mass with respect to a total of 100 parts by mass of the component (A) and the component (B).
- a prepreg having a low water absorption rate and a remarkable reduction in insulation resistance over time can be realized easily and with good reproducibility, and furthermore, a prepreg having a heat resistance equivalent to that of a conventional product. Can also be realized. Therefore, by using this prepreg, metal foil-clad laminates and printed wiring boards that have a low water absorption rate and a significantly increased temporal stability of insulation resistance can be easily obtained while having the same heat resistance as conventional products. As a result, the reliability of the product is improved.
- the prepreg of this embodiment has a specific naphthol-modified dimethylnaphthalene formaldehyde resin (A), an epoxy equivalent of 200 to 400 g / eq. It is obtained by impregnating or coating the base material (D) with a resin composition containing the epoxy resin (B) and the inorganic filler (C).
- the naphthol-modified dimethylnaphthalene formaldehyde resin (A) used here is (a) 1,5-dimethylnaphthalene, 1,6-dimethylnaphthalene, 2,6-dimethylnaphthalene, 1,7-dimethylnaphthalene, 1,8-dimethyl.
- a dimethylnaphthalene formaldehyde resin obtained by condensing at least one dimethylnaphthalene selected from the group consisting of naphthalene and 2,7-dimethylnaphthalene and (b) formaldehyde in the presence of an acidic catalyst, is represented by (c) It is obtained by condensing the naphthol compound represented by (1) in the presence of an acidic catalyst.
- R 1 and R 2 each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
- the formaldehyde used in the condensation reaction with dimethylnaphthalene described above compounds that generate formaldehyde such as formalin, paraformaldehyde, and trioxane, which are easily available industrially, can be used.
- the amount of dimethylnaphthalene and formaldehyde charged in the condensation reaction is not particularly limited, but from the viewpoint of increasing the yield, the molar ratio of these is preferably 1: 1 to 1: 6, more preferably. The ratio is 1: 2 to 1: 6, more preferably 1: 2.5 to 1: 5.
- the acidic catalyst used in the above-mentioned condensation reaction of dimethylnaphthalene and formaldehyde is not particularly limited, and examples thereof include sulfuric acid.
- this condensation reaction can also be performed in presence of water and an acidic catalyst as needed.
- the conditions for synthesizing the dimethylnaphthalene formaldehyde resin can be carried out by appropriately applying known methods, and are not particularly limited.
- 1,5-dimethylnaphthalene, formalin aqueous solution and concentrated sulfuric acid are charged into a reaction kettle, heated in a nitrogen stream, stirred under reflux and reacted, then neutralized with acid and extracted with an organic solvent.
- 1,5-dimethylnaphthalene formaldehyde resin can be obtained.
- alkyl group having 1 to 3 carbon atoms in the naphthol compound represented by the general formula (1) used in the naphthol modification of the dimethylnaphthalene formaldehyde resin include a methyl group, an ethyl group, and n-propyl. Group and isopropyl group.
- R 1 and R 2 are preferably both hydrogen atoms, more specifically 1-naphthol or 2-naphthol. More preferred.
- the acidic catalyst used in the naphthol modification of the dimethylnaphthalene formaldehyde resin is not particularly limited, and examples thereof include sulfuric acid and paratoluenesulfonic acid. Among these, paratoluenesulfonic acid is preferable.
- a naphthol-modified dimethylnaphthalene formaldehyde resin (A) can be obtained by heating and refluxing a dimethylnaphthalene formaldehyde resin and (c) a naphthol compound represented by the general formula (1) in the presence of an acidic catalyst.
- a condensation reaction is usually performed under normal pressure, but can be performed under pressure as necessary.
- a solvent inert to the condensation reaction can also be used.
- the solvent examples include aromatic hydrocarbons such as toluene, ethylbenzene, and xylene; saturated aliphatic hydrocarbons such as heptane and hexane; alicyclic hydrocarbons such as cyclohexane; ketones such as methyl isobutyl ketone; dioxane, dibutyl ether, and the like.
- Ethers such as 2-propanol; carboxylic acid esters such as ethyl propionate; carboxylic acids such as acetic acid.
- the heating temperature in the presence of the acidic catalyst is not particularly limited, but is preferably from 100 to 250 ° C, more preferably from 120 to 200 ° C, and even more preferably from 150 to 200 ° C from the viewpoint of increasing the viscosity of the resin.
- An inert gas such as nitrogen, helium, argon, or water vapor may be passed through the reaction system.
- After completion of the reaction if necessary, after further diluting by adding a solvent, it is allowed to stand to separate into two phases, and after separating the resin phase and the aqueous phase, which are oil phases, by further washing with water
- a general method such as completely removing the acidic catalyst and removing the added solvent and unreacted naphthol compound by distillation may be employed.
- the naphthol-modified dimethylnaphthalene formaldehyde resin (A) obtained as described above is not particularly limited, but has a hydroxyl group equivalent of 300 to 600 g / eq. It is preferable that By using a product within this range, a prepreg having a low water absorption and a heat resistance equivalent to that of a conventional product tends to be obtained.
- the hydroxyl equivalent of this naphthol modified dimethylnaphthalene formaldehyde resin (A) can be adjusted by the preparation ratio of the dimethylnaphthalene formaldehyde resin and the naphthol compound at the time of naphthol modification.
- the content of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) can be appropriately set according to the desired performance, and is not particularly limited. From the viewpoint of the water absorption rate of the obtained prepreg and the like, the content of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) is 100 parts by mass in total of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) and the epoxy resin (B). The amount is preferably 40 to 70 parts by mass.
- a naphthol modified dimethylnaphthalene formaldehyde resin (A) can be used individually by 1 type or in combination of 2 or more types.
- the epoxy equivalent used in this embodiment is 200 to 400 g / eq.
- a publicly known one for example, an epoxy resin used as a printed wiring board material can be used as appropriate. There is no particular limitation.
- biphenyl aralkyl type epoxy resin bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, phenol novolac type epoxy resin, cresol novolak type epoxy resin, Bisphenol A novolac type epoxy resin, trifunctional phenol type epoxy resin, tetrafunctional phenol type epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin, aralkyl novolac type epoxy resin, alicyclic epoxy resin, polyol type epoxy resin, glycidyl ester Type epoxy resin, phenol aralkyl type epoxy resin, aralkyl novolac type epoxy resin, biphenyl aralkyl type epoxy resin, naphthol aralkyl Epoxy resin, dicyclopentadiene type epoxy resin, polyol type epoxy resin, glycidylamine, glycidyl ester, compound obtained by epoxidizing double bond, and compound obtained by reaction of hydroxyl group-containing
- the epoxy resin (B) is preferably a biphenyl aralkyl type epoxy resin. Those represented by 2) are particularly preferred.
- n an integer of 1 or more.
- the epoxy equivalent of the above epoxy resin (B) is 200 to 400 g / eq. From the viewpoint of realizing a prepreg having a low water absorption. Is required.
- the epoxy equivalent is 250 to 350 g / eq. From the viewpoint of water absorption of the obtained prepreg and the like. It is more preferable that
- the content of the epoxy resin (B) can be appropriately set according to the desired performance, and is not particularly limited. From the viewpoint of the water absorption rate and heat resistance of the prepreg obtained, the content of the epoxy resin (B) is 30 to 30 parts per 100 parts by mass in total of the naphthol-modified dimethylnaphthalene formaldehyde resin (A) and the epoxy resin (B). The amount is preferably 60 parts by mass.
- the inorganic filler (C) used in the present embodiment can be appropriately selected and used from those known in the art, and is not particularly limited. Specific examples thereof include, for example, natural silica, synthetic silica, fused silica, amorphous silica, silica such as hollow silica, molybdenum compounds such as boehmite, molybdenum oxide, and zinc molybdate, zinc borate, zinc stannate, alumina, Zinc oxide, magnesium oxide, zirconium oxide, aluminum hydroxide, boron nitride, clay, kaolin, talc, calcined clay, calcined kaolin, calcined talc, mica, short glass fiber (E glass, T glass, D glass, S glass, Q Glass fine powders such as glass, etc.), hollow glass, spherical glass and the like, but are not particularly limited thereto. These can be used individually by 1 type or in combination of 2 or more types. Among these, it is preferable
- the content of the inorganic filler (C) can be appropriately set according to the desired performance, and is not particularly limited.
- the content of the inorganic filler (C) is naphthol-modified dimethylnaphthalene formaldehyde resin (The amount is preferably 5 to 300 parts by mass, more preferably 150 to 300 parts by mass with respect to 100 parts by mass in total of A) and the epoxy resin (B).
- the prepreg of the present embodiment can be obtained by impregnating or coating the base material (D) with the resin composition containing the components (A) to (C) described above.
- the resin composition may contain a silane coupling agent and a wetting and dispersing agent as long as the desired properties are not impaired.
- a silane coupling agent or a wet dispersant By blending a silane coupling agent or a wet dispersant, the dispersibility of the inorganic filler in the resin composition can be improved.
- silane coupling agent generally used for the surface treatment of an inorganic substance can be used suitably.
- Specific examples thereof include, but are not limited to, aminosilanes such as ⁇ -aminopropyltriethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropyltrimethoxysilane, and ⁇ -glycidoxypropyltrimethoxy.
- Epoxy silanes such as silane, vinyl silanes such as ⁇ -methacryloxypropyltrimethoxysilane, cationic silanes such as N- ⁇ - (N-vinylbenzylaminoethyl) - ⁇ -aminopropyltrimethoxysilane hydrochloride, Examples thereof include phenylsilane. These can be used individually by 1 type or in combination of 2 or more types.
- the wetting and dispersing agent is not particularly limited, but a dispersion stabilizer used for paints can be suitably used.
- a polymer wetting and dispersing agent having an acid group is preferable, and a polymer wetting and dispersing agent having an acid value of 20 to 200 mgKOH / g is more preferable.
- Specific examples thereof include polymer wetting and dispersing agents manufactured by Big Chemie Japan Co., Ltd., such as Disperbyk-110, Disperbyk-111, Disperbyk-180, BYK-161, BYK-W996, BYK-W9010, BYK-W903, Examples include BYK-W940, but are not limited thereto. These can be used individually by 1 type or in combination of 2 or more types.
- the above resin composition may contain a curing accelerator for appropriately adjusting the curing rate, if necessary.
- a curing accelerator for appropriately adjusting the curing rate
- This type of curing accelerator is known in the art, and for example, those generally used as curing accelerators for epoxy resins and phenol resins can be suitably used.
- Specific examples of the curing accelerator include, for example, organic metal salts such as copper, zinc, cobalt and nickel, imidazoles and derivatives thereof, and tertiary amines, but are not particularly limited thereto. These can be used individually by 1 type or in combination of 2 or more types.
- the above resin composition may contain a solvent as necessary.
- a solvent for example, when an organic solvent is used, the viscosity at the time of preparing the resin composition can be reduced, the handling property is improved and the impregnation property to the glass cloth is enhanced.
- the solvent is not particularly limited as long as it can dissolve or be compatible with the naphthol-modified dimethylnaphthalene formaldehyde resin (A) and the epoxy resin (B).
- ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone
- aromatic hydrocarbons such as benzene, toluene and xylene
- amides such as dimethylformamide and dimethylacetamide
- propylene glycol methyl ether and The acetate etc. are mentioned. These can be used individually by 1 type or in combination of 2 or more types.
- the above resin composition may contain components other than the above as long as the desired properties are not impaired.
- optional blends include various thermosetting resins other than those described above, thermoplastic resins and oligomers thereof, various polymer compounds such as elastomers, other flame retardant compounds, and various additives. Can be mentioned. These are not particularly limited as long as they are commonly used in the industry.
- specific examples of flame retardant compounds include nitrogen-containing compounds such as melamine and benzoguanamine, and oxazine ring-containing compounds.
- additives include ultraviolet absorbers, antioxidants, photopolymerization initiators, fluorescent brighteners, photosensitizers, dyes, pigments, thickeners, lubricants, antifoaming agents, dispersants, and leveling agents. , Brighteners, polymerization inhibitors and the like. These arbitrary formulations can be used singly or in combination of two or more.
- the above resin composition can be prepared according to a conventional method, and uniformly contains naphthol-modified dimethylnaphthalene formaldehyde resin (A), epoxy resin (B), inorganic filler (C), and other optional components described above. If it is a method by which the resin composition to be obtained is obtained, the preparation method will not be specifically limited. For example, a formulation in which an inorganic filler (C) is blended with an epoxy resin (B) is dispersed with a homomixer or the like, and a naphthol-modified dimethylnaphthalene formaldehyde resin (A) is further blended in this formulation and sufficiently stirred. Thus, the resin composition can be easily prepared.
- preparing the resin composition known processes (such as stirring, mixing, and kneading) for uniformly dissolving or dispersing the components can be performed.
- a stirring tank provided with a stirrer having an appropriate stirring ability.
- the above stirring, mixing, and kneading treatment can be appropriately performed using, for example, a known apparatus such as a ball mill or a bead mill for mixing, or a revolution / spinning mixing apparatus.
- an organic solvent from the viewpoint of reducing the viscosity and improving the handling property and improving the impregnation property with the glass cloth. Specific examples thereof are as described above.
- the prepreg of this embodiment can be obtained by combining the above resin composition with a base material, specifically, impregnating or applying the above resin composition to the base material.
- the manufacturing method of a prepreg can be performed according to a conventional method, and is not specifically limited. For example, after impregnating or applying the above-mentioned resin composition (resin varnish) to the substrate (D), it is semi-cured (B stage) by heating in a dryer at 100 to 200 ° C. for 1 to 60 minutes.
- the prepreg of this embodiment can be manufactured.
- the resin content of the prepreg (the amount of the resin composition (including the inorganic filler) relative to the total amount of the prepreg) is not particularly limited, but is preferably 20 to 90% by mass.
- the base material (D) used at the time of producing the prepreg is not particularly limited, and known materials used for various printed wiring board materials are appropriately selected and used depending on the intended use and performance. be able to. Specific examples thereof include glass fibers such as E glass, D glass, S glass, NE glass, T glass, Q glass, and spherical glass, inorganic fibers other than glass such as quartz, organic materials such as polyimide, polyamide, and polyester. Examples thereof include fibers and the like, which can be appropriately selected depending on the intended use and performance.
- a base material can be used individually by 1 type or in combination of 2 or more types.
- the weaving method of the woven fabric is known as plain weave, Nanako weave, twill weave, etc. It can be appropriately selected and used depending on the intended use and performance. Among these, those obtained by performing fiber-opening treatment or glass woven fabrics surface-treated with a silane coupling agent or the like are preferably used.
- the thickness and mass of the base material are not particularly limited, but usually about 0.01 to 0.3 mm is preferably used.
- the base material is preferably a glass woven fabric having a thickness of 200 ⁇ m or less and a mass of 250 g / m 2 or less, and more preferably a glass woven fabric made of E-glass glass fibers.
- the metal foil-clad laminate of this embodiment can be obtained by laminating at least one prepreg as described above, and laminating and forming the metal foil on one or both sides thereof. Specifically, one or a plurality of the prepregs described above are stacked, and a metal foil such as copper or aluminum is arranged on one or both sides as desired, and this is laminated and formed as necessary.
- the metal foil-clad laminate of this embodiment can be produced.
- the metal foil used here will not be specifically limited if it is used for printed wiring board material, Well-known copper foils, such as a rolled copper foil and an electrolytic copper foil, are preferable.
- the thickness of the metal foil is not particularly limited, but is preferably 2 to 70 ⁇ m, more preferably 2 to 35 ⁇ m.
- the molding conditions of the metal foil-clad laminate and the molding conditions are not particularly limited, and general techniques and conditions of a laminate for a printed wiring board and a multilayer board can be applied.
- a multistage press, a multistage vacuum press, a continuous molding machine, an autoclave molding machine, etc. can be used, and the temperature is 100 to 300 ° C., the pressure is 2 to 100 kgf / pressure. cm 2 and the heating time is generally in the range of 0.05 to 5 hours.
- post-curing can be performed at a temperature of 150 to 300 ° C., if necessary.
- a multilayer board can be formed by combining and molding the prepreg of the present embodiment and a separately prepared wiring board for an inner layer.
- the metal foil-clad laminate of this embodiment can be suitably used as a printed wiring board by forming a predetermined wiring pattern.
- the method for producing the printed wiring board can be performed according to a conventional method, and is not particularly limited.
- a single-layer printed wiring board can be produced by etching a predetermined wiring pattern on the metal foil of the metal foil-clad laminate.
- the multilayer printed wiring board can be produced by stacking and forming a metal foil on the printed wiring board via a prepreg, and etching a predetermined wiring pattern on the metal foil.
- the number of wiring layers can be further increased by stacking and forming a metal foil on the surface via a prepreg and etching a predetermined wiring pattern on the metal foil.
- a prepreg is interposed between a plurality of printed wiring boards, and a metal foil is laminated on the surface via the prepreg, and these are laminated to etch a predetermined wiring pattern on the metal foil on the surface.
- a multilayer printed wiring board can also be produced by processing.
- the structure which combined the prepreg of this embodiment and other prepregs may be sufficient as the metal foil tension laminated board and printed wiring board of the said embodiment.
- part means “part by mass” unless otherwise specified.
- Synthesis Example 2 Synthesis of naphthol-modified dimethylnaphthalene formaldehyde resin 1,5-dimethylnaphthalene obtained in Synthesis Example 1 was placed in a 500 mL four-necked flask equipped with a Dimroth condenser, thermometer and stirring frame blade under a nitrogen stream. 90 g of formaldehyde resin, 71.1 g (0.49 mol) of 1-naphthol and 0.36 g of paratoluenesulfonic acid were added, and the temperature was raised to 185 ° C. and reacted for 4 hours.
- Example 1 Preparation of Prepreg 58 parts by mass of naphthol-modified dimethylnaphthalene formaldehyde resin (hydroxyl equivalent: 440 g / eq.) Obtained by Synthesis Example 2, biphenylaralkyl epoxy resin (NC-3000-FH, epoxy equivalent: 320 g / eq., Japan) A varnish was prepared by mixing 42 parts by mass of Kayaku Co., Ltd.), 100 parts by mass of fused silica (manufactured by Admatex) and 0.02 parts by mass of imidazole (2E4MZ, manufactured by Shikoku Chemicals Co., Ltd.).
- This varnish was diluted with methyl ethyl ketone, impregnated on a 0.1 mm thick E glass woven fabric, heated at 165 ° C. for 3 minutes and dried to prepare a prepreg having a resin content of 50 mass%.
- Preparation of metal foil-clad laminates 4 or 8 of the obtained prepregs were stacked, 12 ⁇ m thick electrolytic copper foils were placed on the upper and lower surfaces of the laminate, and a surface pressure of 30 kgf / cm 2 was used using a press. , By performing lamination molding (pressure molding) for 120 minutes at a temperature of 220 ° C., a metal foil-clad laminate with an insulating layer thickness of 0.4 mm, and a metal foil with an insulating layer thickness of 0.8 mm A tension laminate was produced. Using the obtained metal foil-clad laminate, the water absorption, insulation resistance, glass transition temperature, moisture absorption heat resistance, and solder heat resistance were measured and evaluated. The results are shown in Table 1.
- the measuring method and evaluation method of each test method are as follows. 1) Water absorption: A metal foil-clad laminate with an insulating layer thickness of 0.4 mm was cut into a size of 30 mm ⁇ 30 mm ⁇ 0.4 mm with a dicing saw to obtain a sample having a copper foil on the surface. Using this sample, in accordance with JIS C6481, the water absorption after treatment at 121 ° C. and 2 atm for 1, 3 and 5 hours was measured with a pressure cooker tester (PC-3 type, manufactured by Hirayama Seisakusho).
- PC-3 type manufactured by Hirayama Seisakusho
- Insulation resistance A metal foil-clad laminate with an insulating layer thickness of 0.4 mm was cut into a size of 40 mm ⁇ 20 mm ⁇ 0.4 mm with a dicing saw, and the copper foil on the entire surface was removed by etching. A sample from which all the foil was removed was obtained. Using this sample, in accordance with JIS C6481, insulation resistance after 1000 hours treatment at 121 ° C. and 2 atm with a pressure cooker tester (Hirayama Seisakusho, PC-3 type) and untreated (after 0 hour treatment) The insulation resistance was measured.
- a pressure cooker tester Hirayama Seisakusho, PC-3 type
- Solder heat resistance A metal foil-clad laminate with an insulating layer thickness of 0.4 mm is cut into a size of 50 mm ⁇ 50 mm ⁇ 0.4 mm with a dicing saw to obtain a measurement sample that leaves a copper foil on the surface. It was. This measurement sample was floated in a solder bath at 280 ° C. for 30 minutes, the appearance change was visually observed, and the time until delamination occurred was measured. The notation “> 30 min” in Table 1 means that no delamination occurred even after 30 minutes.
- Example 1 has significantly improved stability and reliability as compared with Comparative Examples 1 and 2.
- the present invention can be widely and effectively used in various applications such as electric / electronic materials, machine tool materials, and aviation materials that require low absorption rate and high insulation stability.
- it can be effectively used in printed circuit boards and laminated boards that require low absorption rate, high insulation stability, and high heat resistance.
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Abstract
Description
<1>
ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)、エポキシ当量が200~400g/eq.であるエポキシ樹脂(B)及び無機充填材(C)を含有する樹脂組成物であり、且つ、前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)が、(a)1,5-ジメチルナフタレン、1,6-ジメチルナフタレン、2,6-ジメチルナフタレン、1,7-ジメチルナフタレン、1,8-ジメチルナフタレン及び2,7-ジメチルナフタレンからなる群から選択される少なくとも1種のジメチルナフタレンと(b)ホルムアルデヒドとを酸性触媒の存在下で縮合させて得られるジメチルナフタレンホルムアルデヒド樹脂に、(c)下記一般式(1)で表されるナフトール化合物;
を酸性触媒の存在下で縮合させて得られるものである樹脂組成物を、基材(D)に含浸または塗布することによって得られる、
プリプレグ。
前記エポキシ樹脂(B)が、ビフェニルアラルキル型エポキシ樹脂である、
上記<1>に記載のプリプレグ。
前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)の水酸基当量が、300~600g/eq.である、
上記<1>又は<2>に記載のプリプレグ。
前記無機充填材(C)がシリカである、
上記<1>~<3>のいずれか一項に記載のプリプレグ。
前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)の含有量が、前記(A)成分及び前記(B)成分の合計100質量部に対して、40~70質量部である、
上記<1>~<4>のいずれか一項に記載のプリプレグ。
前記無機充填材(C)の含有量が、前記(A)成分及び前記(B)成分の合計100質量部に対して、5~300質量部である、
上記<1>~<5>のいずれか一項に記載のプリプレグ。
上記<1>~<6>のいずれか一項に記載のプリプレグを用いた、
金属箔張り積層板。
上記<7>に記載の金属箔張り積層板を用いた、
プリント配線板。
1,5-ジメチルナフタレンホルムアルデヒド樹脂の合成
ジムロート冷却管、温度計及び攪拌翼を備えた、底抜きが可能な内容積2Lの四つ口フラスコに、1,5-ジメチルナフタレン(三菱ガス化学(株)製)218g(1.4mol)と40質量%ホルマリン水溶液(三菱ガス化学(株)製)420g(ホルムアルデヒドとして5.6mol)及び98質量%硫酸(関東化学(株)製)194gを仕込み、窒素気流中、常圧下、100℃で還流させながら攪拌し反応させた。7時間反応後、希釈溶媒としてエチルベンゼン360gを加え、静置後、下相の水相を除去した。さらに中和及び水洗を行った後、エチルベンゼン及び未反応の1,5-ジメチルナフタレンを減圧下で留去することにより、常温で固形の1,5-ジメチルナフタレンホルムアルデヒド樹脂250gを得た。
ゲル浸透クロマトグラフィー(GPC)分析により、ポリスチレン換算の重量平均分子量(Mw)、数平均分子量(Mn)を求め、分散度(Mw/Mn)を求めたところ、Mn:550、Mw:1130、Mw/Mn:2.05であった。
装置 :Shodex GPC-101型(昭和電工(株)製)
カラム:LF-804×3
溶離液:THF 1ml/min
温度 :40℃
ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂の合成
ジムロート冷却管、温度計及び撹枠翼を設置した、内容積500mLの四つ口フラスコに、窒素気流下で、合成例1で得られた1,5-ジメチルナフタレンホルムアルデヒド樹脂90g、1-ナフトール71.1g(0.49mol)及びパラトルエンスルホン酸0.36gを加え、185℃まで昇温し、4時間反応させた。エチルベンゼンを添加して希釈した後、中和及び水洗を行い、溶媒及び未反応の1-ナフトールを減圧下に除去することにより、ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂160gを得た。
上記と同様にGPC測定を行った結果、Mn:848、Mw:1630、Mw/Mn:1.93であった。
プリプレグの作製
合成例2により得られたナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(水酸基当量:440g/eq.)58質量部、ビフェニルアラルキル型エポキシ樹脂(NC-3000-FH、エポキシ当量:320g/eq.、日本化薬(株)製)42質量部、溶融シリカ(アドマテックス製)100質量部、イミダゾール(2E4MZ、四国化成工業(株)製)0.02質量部を混合して、ワニスを調製した。
このワニスをメチルエチルケトンで希釈し、厚さ0.1mmのEガラス織布に含浸塗工し、165℃で3分間加熱し乾燥させることにより、樹脂含有量が50質量%のプリプレグを作製した。
得られたプリプレグを、それぞれ4枚または8枚重ね、その積層体の上下面に12μm厚の電解銅箔を配置し、プレス機を用いて、面圧30kgf/cm2、温度220℃で120分間の積層成形(加圧成形)を行うことで、絶縁層の厚さが0.4mmの金属箔張り積層板、及び、絶縁層の厚さが0.8mmの金属箔張り積層板を作製した。
得られた金属箔張り積層板を用いて、吸水率、絶縁抵抗、ガラス転移温度、吸湿耐熱性、及び半田耐熱性の測定並びに評価を行った。結果を表1に示す。
なお、各試験方法の測定方法及び評価方法は、以下のとおりである。
1)吸水率:絶縁層の厚さが0.4mmの金属箔張り積層板をダイシングソーでサイズ30mm×30mm×0.4mmに切断して、表面の銅箔を残したサンプルを得た。このサンプルを使用し、JIS C6481に準拠して、プレッシャークッカー試験機(平山製作所製、PC-3型)で121℃、2気圧で1、3、5時間処理後の吸水率を測定した。
2)絶縁抵抗:絶縁層の厚さが0.4mmの金属箔張り積層板をダイシングソーでサイズ40mm×20mm×0.4mmに切断し、全面の銅箔をエッチング除去することにより、表面の銅箔がすべて除去されたサンプルを得た。このサンプルを使用し、JIS C6481に準拠して、プレッシャークッカー試験機(平山製作所製、PC-3型)で121℃、2気圧で1000時間処理後の絶縁抵抗と未処理(0時間処理後)の絶縁抵抗とを測定した。
3)ガラス転移温度:絶縁層の厚さが0.8mmの金属箔張り積層板をダイシングソーでサイズ40mm×20mm×0.4mmに切断して得たサンプルを用い、JIS C6481に準拠して、動的粘弾性分析装置(TAインスツルメント製)で測定した。
4)絶縁抵抗保持率:上記2)で測定された0時間処理後の絶縁抵抗の値から1000時間処理後の絶縁抵抗の値を引いた値を、1000時間処理後の絶縁抵抗の値で除した値を%で表した。
5)吸湿耐熱性:絶縁層の厚さが0.4mmの金属箔張り積層板をダイシングソーでサイズ50mm×50mm×0.4mmに切断後、片面の半分以外の銅箔をすべてエッチング除去して、片面にのみ銅箔が半分残された試験片を得た。この試験片を使用し、プレッシャークッカー試験機(平山製作所製、PC-3型)で121℃、2気圧で3、4、5時間処理後、260℃のハンダ槽の中に60秒浸漬した後の外観変化を目視で観察した(フクレ発生数/試験数)。
6)半田耐熱性:絶縁層の厚さが0.4mmの金属箔張り積層板をダイシングソーでサイズ50mm×50mm×0.4mmに切断して、表面の銅箔を残した測定用サンプルを得た。この測定用サンプルを280℃の半田槽に30分間フロートさせて、その外観変化を目視で観察し、デラミネーションが発生するまでの時間を測定した。なお、表1中における「>30min」との表記は、30分経過してもデラミネーションが発生しなかったことを意味する。
ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂58質量部の代わりにナフトールアラルキルフェノール樹脂(SN495V、新日鐵化学(株)製、水酸基当量:236g/eq.)を42質量部、ビフェニルアラルキル型エポキシ樹脂(NC-3000-FH)を58質量部、イミダゾール(2E4MZ)を0.07質量部用い、プリプレグ作製時の乾燥条件を165℃で9分間としたこと以外は、実施例1と同様に行い、プリプレグ及び金属箔張り積層板を作製した。
得られた金属箔張り積層板を用いて、実施例1と同様に各種測定及び評価を行った。結果を表1に示す。
ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂58質量部の代わりにビフェニルアラルキルフェノール樹脂(KAYAHARD GPH-103、日本化薬(株)製、水酸基当量:231g/eq.)を42質量部、ビフェニルアラルキル型エポキシ樹脂(NC-3000-FH)を58質量部、イミダゾール(2E4MZ)を0.04質量部用い、プリプレグ作製時の乾燥条件を165℃で4分間としたこと以外は、実施例1と同様に行い、プリプレグ及び金属箔張り積層板を作製した。
得られた金属箔張り積層板を用いて、実施例1と同様に各種測定及び評価を行った。結果を表1に示す。
Claims (8)
- ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)、エポキシ当量が200~400g/eq.であるエポキシ樹脂(B)及び無機充填材(C)を含有する樹脂組成物であり、且つ、前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)が、(a)1,5-ジメチルナフタレン、1,6-ジメチルナフタレン、2,6-ジメチルナフタレン、1,7-ジメチルナフタレン、1,8-ジメチルナフタレン及び2,7-ジメチルナフタレンからなる群から選択される少なくとも1種のジメチルナフタレンと(b)ホルムアルデヒドとを酸性触媒の存在下で縮合させて得られるジメチルナフタレンホルムアルデヒド樹脂に、(c)下記一般式(1)で表されるナフトール化合物;
を酸性触媒の存在下で縮合させて得られるものである樹脂組成物を、基材(D)に含浸または塗布することによって得られる、
プリプレグ。 - 前記エポキシ樹脂(B)が、ビフェニルアラルキル型エポキシ樹脂である、
請求項1に記載のプリプレグ。 - 前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)の水酸基当量が、300~600g/eq.である、
請求項1又は2に記載のプリプレグ。 - 前記無機充填材(C)がシリカである、
請求項1~3のいずれか一項に記載のプリプレグ。 - 前記ナフトール変性ジメチルナフタレンホルムアルデヒド樹脂(A)の含有量が、前記(A)成分及び前記(B)成分の合計100質量部に対して、40~70質量部である、
請求項1~4のいずれか一項に記載のプリプレグ。 - 前記無機充填材(C)の含有量が、前記(A)成分及び前記(B)成分の合計100質量部に対して、5~300質量部である、
請求項1~5のいずれか一項に記載のプリプレグ。 - 請求項1~6のいずれか一項に記載のプリプレグを用いた、
金属箔張り積層板。 - 請求項7に記載の金属箔張り積層板を用いた、
プリント配線板。
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WO2014203865A1 (ja) * | 2013-06-18 | 2014-12-24 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 |
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GB2568727B (en) * | 2017-11-24 | 2020-06-24 | Gurit Uk Ltd | Fire-retardant composite materials |
CN111378098B (zh) * | 2018-12-29 | 2023-04-07 | 广东生益科技股份有限公司 | 树脂组合物、预浸料、层压板以及覆金属箔层压板 |
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