WO2016067330A1 - 硬化性エポキシ組成物、並びに、これを用いて得られるフィルム、積層フィルム、プリプレグ、積層体、硬化物、及び複合体 - Google Patents
硬化性エポキシ組成物、並びに、これを用いて得られるフィルム、積層フィルム、プリプレグ、積層体、硬化物、及び複合体 Download PDFInfo
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- WO2016067330A1 WO2016067330A1 PCT/JP2014/078463 JP2014078463W WO2016067330A1 WO 2016067330 A1 WO2016067330 A1 WO 2016067330A1 JP 2014078463 W JP2014078463 W JP 2014078463W WO 2016067330 A1 WO2016067330 A1 WO 2016067330A1
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- Prior art keywords
- compound
- film
- epoxy compound
- layer
- epoxy
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- 238000012423 maintenance Methods 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- XLSZMDLNRCVEIJ-UHFFFAOYSA-N methylimidazole Natural products CC1=CNC=N1 XLSZMDLNRCVEIJ-UHFFFAOYSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000012285 osmium tetroxide Substances 0.000 description 1
- 229910000489 osmium tetroxide Inorganic materials 0.000 description 1
- 125000005740 oxycarbonyl group Chemical group [*:1]OC([*:2])=O 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 1
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- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 125000001792 phenanthrenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C=CC12)* 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 description 1
- 229960001553 phloroglucinol Drugs 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- KOUKXHPPRFNWPP-UHFFFAOYSA-N pyrazine-2,5-dicarboxylic acid;hydrate Chemical compound O.OC(=O)C1=CN=C(C(O)=O)C=N1 KOUKXHPPRFNWPP-UHFFFAOYSA-N 0.000 description 1
- 125000005581 pyrene group Chemical group 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 229960001755 resorcinol Drugs 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000005672 tetraenes Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
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- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
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- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
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- C08G59/38—Epoxy compounds containing three or more epoxy groups together with di-epoxy compounds
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- 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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- 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
- C08G59/621—Phenols
- C08G59/623—Aminophenols
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- 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
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- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/05—Forming flame retardant coatings or fire resistant coatings
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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
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4673—Application methods or materials of intermediate insulating layers not specially adapted to any one of the previous methods of adding a circuit layer
- H05K3/4676—Single layer compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- 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
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- 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
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
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- B32B2457/00—Electrical equipment
-
- 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
- C08J2363/02—Polyglycidyl ethers of bis-phenols
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08J2463/02—Polyglycidyl ethers of bis-phenols
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0346—Organic insulating material consisting of one material containing N
Definitions
- the present invention relates to a curable epoxy composition, a film, a laminated film, a prepreg, a laminated body, a cured product, and a composite.
- circuit boards are being made multilayered.
- an electrical insulation layer is laminated on an inner layer substrate composed of an electrical insulation layer and a conductor layer formed on the surface thereof, and a conductor layer is formed on the electrical insulation layer. Further, it is formed by repeatedly stacking these electrical insulating layers and forming the conductor layer.
- thermosetting resins As a material for constituting the electrical insulating layer of such a multilayer circuit board, ceramics or thermosetting resins are generally used. Among these, epoxy resins as thermosetting resins are widely used because they are excellent in terms of balance between economy and performance.
- Patent Document 1 discloses an epoxy resin containing (A) an epoxy resin, (B) an active ester compound, and (C) a triazine-containing cresol novolak resin. A composition is disclosed. According to Patent Document 1, according to such an epoxy resin composition, although it has a low roughness, it exhibits high adhesion to a plated conductor, and has a low linear expansion coefficient and low dielectric loss tangent. It is described that a layer can be formed.
- the conductor layer and the electrical insulating layer need to be in close contact with each other, but if the adhesiveness is weak, the multilayer circuit board is used during the manufacturing process or mounting of the multilayer circuit board, and further used as a substrate for electronic materials. Peeling may occur in the interior, and reliability may not be sufficiently secured.
- An object of the present invention is to provide a curable epoxy composition capable of forming an electrical insulating layer excellent in heat resistance and electrical properties in a well-balanced manner and having excellent adhesion to a conductor layer, and also obtained using the same. It is providing the film, laminated
- the present inventors have found that a polyphenyl epoxy compound having a biphenyl structure and / or a condensed polycyclic structure, a trivalent or higher polyhydric phenol type epoxy compound, and a triazine structure are contained. According to the curable epoxy composition containing a phenol resin, it has been found that an electrical insulating layer having desired characteristics can be obtained, and the present invention has been completed.
- [1] Contains a polyvalent epoxy compound (A) having a biphenyl structure and / or a condensed polycyclic structure, a polyhydric phenol type epoxy compound (B) having three or more valences, and a triazine structure-containing phenol resin (C)
- a curable epoxy composition [2] The curable epoxy composition according to claim 1, wherein the trihydric or higher polyhydric phenol type epoxy compound (B) includes an epoxy compound having a structure represented by the following general formula (1): (In Formula (1), each R 1 independently represents a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms.) [3]
- the trihydric or higher polyhydric phenol type epoxy compound (B) includes an epoxy compound having any one of the structures represented by the following general formulas (2) to (5).
- Curable epoxy composition (In Formula (2), R 2 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and m represents an integer of 2 or more.) (In formula (4), n represents a positive integer.) [4]
- the content ratio of the polyvalent epoxy compound (A) and the trivalent or higher polyhydric phenol type epoxy compound (B) is “polyhydric epoxy compound (A): trivalent or higher polyhydric phenol type”.
- the curable epoxy composition according to any one of [1] to [3], wherein the weight ratio of the epoxy compound (B) is 20:80 to 95: 5, [5]
- the content ratio of the triazine structure-containing phenol resin (C) is 1 to 60 parts by weight with respect to a total of 100 parts by weight of the epoxy compound contained in the curable epoxy composition.
- a curable epoxy composition capable of forming an electrical insulating layer excellent in heat resistance and electrical properties in a well-balanced manner and having excellent adhesion to a conductor layer, and obtained using the same Film, laminated film, prepreg, laminate, cured product, and composite are provided.
- the curable epoxy composition of the present invention includes a polyhydric epoxy compound (A) having a biphenyl structure and / or a condensed polycyclic structure, a trihydric or higher polyhydric phenol type epoxy compound (B), and a triazine structure-containing phenol resin. And (C).
- polyhydric epoxy compound (A) having biphenyl structure and / or condensed polycyclic structure The polyvalent epoxy compound (A) having a biphenyl structure and / or a condensed polycyclic structure used in the present invention [hereinafter sometimes abbreviated as a polyvalent epoxy compound (A). ] Is a compound having at least two epoxy groups (oxirane rings) in one molecule and at least one of a biphenyl structure and a condensed polycyclic structure.
- the biphenyl structure refers to a structure in which two benzene rings are connected by a single bond. In the resulting cured resin, the biphenyl structure usually constitutes the main chain of the resin, but may be present in the side chain.
- the condensed polycyclic structure refers to a structure in which two or more monocycles are condensed (condensed).
- the ring constituting the condensed polycyclic structure may be an alicyclic ring or an aromatic ring, and may contain a hetero atom.
- the number of condensed rings is not particularly limited, it is preferably 2 or more from the viewpoint of increasing the heat resistance and mechanical strength of the resulting electrical insulating layer, and practically, the upper limit is about 10 rings. is there.
- Examples of such a condensed polycyclic structure include a dicyclopentadiene structure, a naphthalene structure, a fluorene structure, an anthracene structure, a phenanthrene structure, a triphenylene structure, a pyrene structure, and an ovalen structure.
- the condensed polycyclic structure like the biphenyl structure described above, usually constitutes the main chain of the resin in the resulting cured resin, but may be present in the side chain.
- the polyvalent epoxy compound (A) used in the present invention has a biphenyl structure, a condensed polycyclic structure, or both a biphenyl structure and a condensed polycyclic structure. From the viewpoint of enhancing mechanical strength, the polyvalent epoxy compound (A) preferably has a biphenyl structure, and more preferably has a biphenyl aralkyl structure.
- the blending ratio is a weight ratio (polyvalent epoxy compound having a biphenyl structure / polyvalent epoxy compound having a condensed polycyclic structure), and usually 3/7 to 7/3 is preferred.
- the polyvalent epoxy compound (A) used in the present invention is not limited as long as it has at least two epoxy groups in one molecule and has a biphenyl structure and / or a condensed polycyclic structure. From the viewpoint of excellent heat resistance and mechanical strength of the electrical insulating layer, a novolak epoxy compound having a biphenyl structure and / or a condensed polycyclic structure is preferred. Examples of novolak type epoxy compounds include phenol novolak type epoxy compounds and cresol novolac type epoxy compounds.
- the epoxy equivalent is usually 100 to 1500 equivalents, preferably 150 to 500 equivalents, because good curing reactivity can be obtained.
- epoxy equivalent means the number of grams (g / eq) of an epoxy compound containing 1 gram equivalent of an epoxy group, and can be measured according to the method of JIS K 7236.
- polyvalent epoxy compound (A) used by this invention can be suitably manufactured in accordance with a well-known method, it can also be obtained as a commercial item.
- examples of commercially available polyvalent epoxy compounds (A) having a biphenyl structure are novolak-type epoxy compounds having a biphenyl aralkyl structure.
- Trivalent or higher polyhydric phenol type epoxy compound (B) The trihydric or higher polyhydric phenol type epoxy compound (B) used in the present invention (hereinafter sometimes abbreviated as polyhydric phenol type epoxy compound (B)). ] Is an epoxy compound of a trihydric or higher polyhydric phenol, as long as it does not have a biphenyl structure and / or a condensed polycyclic structure, and is not particularly limited. Type epoxy compounds are preferred.
- the polyvalent hydroxyphenylalkane type epoxy compound having a valence of 3 or more is a compound having a structure in which a hydroxyl group of an aliphatic hydrocarbon substituted with a 3 or more hydroxyphenyl group is glycidylated.
- the epoxy compound the polyvalent epoxy compound (A) having the biphenyl structure and / or the condensed polycyclic structure described above and the polyhydric phenol type epoxy compound (B) are used in combination, and as a curing agent.
- the triazine structure-containing phenol resin (C) the resulting electrical insulation layer has excellent balance of heat resistance and electrical properties, and adhesion to the conductor layer (especially the conductor after the high temperature and high humidity test) The adhesiveness to the layer can also be excellent.
- trivalent or higher polyvalent hydroxyphenylalkane type epoxy compounds trivalent to tetravalent polyvalent hydroxyphenylalkane type epoxy compounds are more preferable.
- trishydroxyphenylmethane type epoxy compounds trishydroxyphenylmethane type epoxy compounds, tetrakishydroxyphenyl, and the like.
- An ethane type epoxy compound is particularly preferably used.
- an epoxy compound having a structure represented by the following general formula (1) is preferable, and any of the following general formulas (2) to (5) An epoxy compound having such a structure is more preferable.
- each R 1 independently represents a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms.
- R 2 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and m represents an integer of 2 or more.
- n represents a positive integer.
- the polyhydric phenol type epoxy compound (B) used by this invention can be suitably manufactured in accordance with a well-known method, it can also be obtained as a commercial item.
- trade names “EPPN-503, EPPN-502H, EPPN-501H” above, Nippon Kayaku Co., Ltd.
- trade names “TACTIX-742” above, Manufactured by Dow Chemical Company
- jER 1032H60 Manufactured by Mitsubishi Chemical Corporation
- the content of the polyhydric phenol type epoxy compound (B) in the curable epoxy composition of the present invention is not particularly limited, but “polyhydric epoxy compound ( The weight ratio of A): polyhydric phenol type epoxy compound (B) ”is preferably in the range of 20:80 to 95: 5, more preferably in the range of 30:70 to 90:10, and still more preferably 40. : The range is 60 to 85:15. Electrical insulation obtained by setting the content of the polyhydric phenol type epoxy compound (B) in the curable epoxy composition of the present invention within the above range in relation to the polyvalent epoxy compound (A) described above. The heat resistance of the layer, the electrical characteristics, and the adhesion to the conductor layer can be further improved.
- the curable epoxy composition of the present invention may contain other epoxy compounds other than those epoxy compounds as desired. You may make it contain suitably. Examples of such other epoxy compounds include phosphorus-containing epoxy compounds.
- the phosphorus-containing epoxy compound an epoxy compound having a phosphaphenanthrene structure can be preferably mentioned.
- the epoxy compound having a phosphaphenanthrene structure is not particularly limited as long as it is an epoxy compound having a phosphaphenanthrene structure represented by the following formula (6).
- a biphenyl type epoxy compound having a phosphaphenanthrene structure examples thereof include a bisphenol type epoxy compound having a phosphaphenanthrene structure and a phenol novolak type epoxy compound having a phosphaphenanthrene structure.
- a biphenyl type epoxy resin may be modified by a known method using 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or a derivative thereof.
- biphenyl type epoxy compounds having various phosphaphenanthrene structures obtained by the above. Examples of such compounds include, but are not limited to, YX-4000 manufactured by Mitsubishi Chemical Corporation, which is an epoxy compound having a tetramethylbiphenyl structure, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10 -Epoxy compounds obtained by modification with oxides.
- the bisphenol type epoxy compound having a phosphaphenanthrene structure a bisphenol A type epoxy resin or a bisphenol F type using 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or a derivative thereof is used.
- examples thereof include bisphenol-type epoxy compounds having various phosphaphenanthrene structures obtained by modifying a bisphenol-type epoxy resin such as an epoxy resin by a known method. Examples of such a compound include, but are not limited to, FX305EK70 manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.
- phenol novolak type epoxy compound having a phosphaphenanthrene structure a phenol novolak type epoxy resin using 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or a derivative thereof is used.
- examples thereof include phenolic novolak epoxy compounds having various phosphaphenanthrene structures obtained by modification by a known method. Although it does not specifically limit as an example of such a compound, For example, Nippon Steel & Sumikin Chemical Co., Ltd. FX289BEK75 is mentioned.
- any epoxy compound having at least one epoxy group in the molecule can be used. It is a polyvalent epoxy compound having at least two epoxy groups in the molecule from the point that it is possible to reduce the mechanical strength and heat resistance of the layer, to lower the linear expansion coefficient, and to improve the electrical characteristics. preferable.
- the content ratio of the epoxy compound having a phosphaphenanthrene structure exhibits the effect of the present invention.
- it is preferably 20 to 90% by weight, more preferably 30 to 70% by weight, based on a total of 100% by weight of the epoxy compound contained in the curable epoxy composition of the present invention.
- an alicyclic epoxy compound in addition to or in addition to an epoxy compound having a phosphaphenanthrene structure, an alicyclic epoxy compound, a cresol novolac type epoxy compound, a phenol novolac type epoxy compound, a bisphenol A novolak type
- An epoxy compound, a trisphenol type epoxy compound, a tetrakis (hydroxyphenyl) ethane type epoxy compound, an aliphatic chain epoxy compound, or the like may be used, and these are available as commercial products as appropriate.
- the triazine structure-containing phenol resin (C) used in the present invention is a condensation polymer of an aromatic hydroxy compound such as phenol, cresol and naphthol, a compound having a triazine ring such as melamine and benzoguanamine, and formaldehyde. .
- the triazine structure-containing phenol resin (C) typically has a structure represented by the following general formula (7).
- R 3 and R 4 are a hydrogen atom or a methyl group, and p is an integer of 1 to 30. Also, R 3 and R 4 may be the same or different from each other.
- the plurality of R 4 may be the same or different from each other, and in formula (4), at least one of the amino groups is an amino group.
- the hydrogen atom contained therein may be substituted with another group (for example, an alkyl group or the like).
- the triazine structure-containing phenol resin (C) acts as a curing agent for the epoxy compound used in the present invention due to the presence of the phenolic active hydroxyl group.
- the triazine structure-containing phenol resin (C) is obtained by containing the triazine structure-containing phenol resin (C).
- the obtained electrically insulating layer exhibits excellent adhesion to a conductor layer in which the layer is laminated, particularly a conductor layer made of copper.
- the triazine structure-containing phenol resin (C) can be produced according to a known method, but is also available as a commercial product. Examples of such commercial products include trade names “LA7052, LA7054, LA3018, LA1356” (manufactured by DIC). These triazine structure-containing phenol resins (C) can be used alone or in admixture of two or more.
- the blending amount of the triazine structure-containing phenol resin (C) in the curable epoxy composition of the present invention is the sum of the epoxy compounds used (that is, the polyhydric epoxy compound (A) and the polyhydric phenol epoxy compound (B ), As well as the total of other epoxy compounds used as necessary), based on 100 parts by weight, preferably 1 to 60 parts by weight, more preferably 2 to 50 parts by weight, still more preferably 3 to 40 parts by weight, Particularly preferred is a range of 4 to 20 parts by weight.
- the equivalent ratio of the epoxy compound to be used and the triazine structure-containing phenol resin (C) [the active hydroxyl group of the triazine structure-containing phenol resin (C) with respect to the total number of epoxy groups of the epoxy compound to be used
- the ratio of the total number of the amounts (active hydroxyl group amount / epoxy group amount)] is preferably 0.01 to 0.6, more preferably 0.05 to 0.4, and still more preferably 0.1 to 0.3. It is a range.
- the equivalent ratio of the epoxy compound to be used and the triazine structure-containing phenol resin (C) can be determined from the total epoxy equivalent of the epoxy compound to be used and the total active hydroxyl group equivalent of the triazine structure-containing phenol resin (C).
- the curable epoxy composition of this invention contains the active ester compound (D) in addition to said each component.
- the active ester compound (D) may be any compound having an active ester group, but in the present invention, a compound having at least two active ester groups in the molecule is preferable.
- the active ester compound (D) acts as a curing agent for the epoxy compound used in the present invention in the same manner as the above-described triazine structure-containing phenol resin (C) by reacting the ester moiety with the epoxy group by heating.
- the active ester compound (D) is obtained from a product obtained by reacting a carboxylic acid compound and / or a thiocarboxylic acid compound with a hydroxy compound and / or a thiol compound from the viewpoint of increasing the heat resistance of the obtained electrical insulating layer.
- Active ester compounds are preferable, and active ester compounds obtained by reacting a carboxylic acid compound with one or more selected from the group consisting of a phenol compound, a naphthol compound and a thiol compound are more preferable.
- An aromatic compound obtained from a reaction of an acid compound with an aromatic compound having a phenolic hydroxyl group and having at least two active ester groups in the molecule is particularly preferred.
- the active ester compound (D) may be linear or multi-branched, and when the active ester compound (D) is derived from a compound having at least two carboxylic acids in the molecule, When the compound having at least two carboxylic acids in the molecule contains an aliphatic chain, the compatibility with the epoxy compound can be increased, and when it has an aromatic ring, the heat resistance is improved. Can be high.
- carboxylic acid compound for forming the active ester compound (D) include benzoic acid, acetic acid, succinic acid, maleic acid, itaconic acid, phthalic acid, isophthalic acid, terephthalic acid, pyromellitic acid and the like. .
- succinic acid, maleic acid, itaconic acid, phthalic acid, isophthalic acid, and terephthalic acid are preferable, and phthalic acid, isophthalic acid, and terephthalic acid are more preferable, from the viewpoint of increasing the heat resistance of the obtained electrical insulating layer. More preferred are isophthalic acid and terephthalic acid.
- thiocarboxylic acid compound for forming the active ester compound (D) include thioacetic acid and thiobenzoic acid.
- hydroxy compound for forming the active ester compound (D) include hydroquinone, resorcin, bisphenol A, bisphenol F, bisphenol S, phenolphthalin, methylated bisphenol A, methylated bisphenol F, and methylated bisphenol S.
- 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene from the viewpoint of improving the solubility of the active ester compound (D) and increasing the heat resistance of the resulting electrical insulating layer, Dihydroxybenzophenone, trihydroxybenzophenone, tetrahydroxybenzophenone, dicyclopentadienyl diphenol, and phenol novolac are preferable, dihydroxybenzophenone, trihydroxybenzophenone, tetrahydroxybenzophenone, dicyclopentadienyl diphenol, and phenol novolak are more preferable, More preferred are cyclopentadienyl diphenol and phenol novolac.
- thiol compound for forming the active ester compound (D) include benzenedithiol and triazinedithiol.
- the production method of the active ester compound (D) is not particularly limited, and can be produced by a known method. For example, it can be obtained by the condensation reaction of the carboxylic acid compound and / or thiocarboxylic acid compound and the hydroxy compound and / or thiol compound.
- the active ester compound (D) for example, an aromatic compound having an active ester group disclosed in JP-A-2002-12650 and a polyfunctional compound disclosed in JP-A-2004-277460 are disclosed.
- Polyester or commercially available products can be used.
- Commercially available products include, for example, trade names “EXB 9451, EXB 9460, EXB 9460S, Epicron® HPC-8000-65T” (manufactured by DIC, “Epicron” is a registered trademark), trade name “DC808” (manufactured by Japan Epoxy Resin) And trade name “YLH1026” (manufactured by Japan Epoxy Resin Co., Ltd.).
- the compounding amount of the active ester compound (D) in the curable epoxy composition of the present invention is the sum of the epoxy compounds used (that is, the polyhydric epoxy compound (A) and the polyhydric phenol type epoxy compound (B),
- the total of other epoxy compounds used as necessary) is preferably 10 to 150 parts by weight, more preferably 15 to 130 parts by weight, and still more preferably 20 to 120 parts by weight with respect to 100 parts by weight. is there.
- the equivalent ratio of the epoxy compound to be used and the active ester compound (D) [the total number of reactive groups of the active ester (D) with respect to the total number of epoxy groups of the epoxy compound to be used
- the ratio (active ester group amount / epoxy group amount)] is preferably in the range of 0.5 to 1.1, more preferably 0.6 to 0.9, and still more preferably 0.65 to 0.85. .
- the ratio of the total number of epoxy groups of the epoxy compound to be used to the total number of active ester compounds (D) with active ester groups [epoxy group amount / (active hydroxyl group amount + active ester group amount)] ⁇ is usually 1. It is less than 1, preferably 0.6 to 0.99, more preferably 0.65 to 0.95.
- the equivalent ratio of the epoxy compound used, the triazine structure-containing phenol resin (C) and the active ester compound (D) is the total epoxy equivalent of the epoxy compound used, the total active hydroxyl group equivalent of the triazine structure-containing phenol resin (C), and It can be determined from the total active ester equivalent of the active ester compound (D).
- the curable epoxy composition of the present invention may further contain other components as described below in addition to the above-described components, as long as the effects of the present invention are not inhibited.
- the resulting electrical insulating layer can be made to have a low linear expansion.
- the filler any of known inorganic fillers and organic fillers can be used, but inorganic fillers are preferred. Specific examples of inorganic fillers include calcium carbonate, magnesium carbonate, barium carbonate, zinc oxide, titanium oxide, magnesium oxide, magnesium silicate, calcium silicate, zirconium silicate, hydrated alumina, magnesium hydroxide, aluminum hydroxide , Barium sulfate, silica, talc, clay and the like.
- the filler to be used may have been surface-treated with a silane coupling agent or the like in advance.
- the content of the filler in the curable epoxy composition of the present invention is not particularly limited, but is usually 30 to 90% by weight in terms of solid content.
- the alicyclic olefin polymer which has a polar group can be mix
- the polar group include a group having a structure capable of reacting with an epoxy group to form a covalent bond, and a group containing a heteroatom and not reactive to the epoxy group, and containing a heteroatom. And a group having no reactivity with an epoxy group is preferred.
- Such an alicyclic olefin polymer does not have reactivity with an epoxy group, and therefore does not substantially contain a functional group having reactivity with an epoxy group.
- substantially does not contain a functional group having reactivity with an epoxy group means that an alicyclic olefin polymer inhibits a functional group having reactivity with an epoxy group, and the expression of the effect of the present invention is inhibited. It means that it does not contain to the extent to be done.
- the functional group having reactivity with an epoxy group include groups having a structure capable of reacting with an epoxy group to form a covalent bond, such as a primary amino group, a secondary amino group, a mercapto group, a carboxyl group, Examples include heteroatom-containing functional groups that react with epoxy groups to form covalent bonds, such as carboxylic anhydride groups, hydroxy groups, and epoxy groups.
- the alicyclic olefin polymer includes, for example, an alicyclic olefin monomer (a) containing no hetero atom and containing an aromatic ring, and an alicyclic olefin monomer containing no hetero ring and containing a hetero atom.
- Body (b) an alicyclic olefin monomer (c) containing both an aromatic ring and a heteroatom, and the alicyclic olefin monomer (a) not containing both an aromatic ring and a heteroatom It can be easily obtained by appropriately combining monomers (d) copolymerizable with (c) and polymerizing according to a known method. The resulting polymer may be further hydrogenated.
- the blending amount of the alicyclic olefin polymer having a polar group in the curable epoxy composition of the present invention is not particularly limited, but is usually 50 with respect to a total of 100 parts by weight of the epoxy compound used.
- the amount is not more than parts by weight, preferably not more than 35 parts by weight.
- the curable epoxy composition of the present invention may contain a curing accelerator.
- the curing accelerator is not particularly limited, and examples thereof include aliphatic polyamines, aromatic polyamines, secondary amines, tertiary amines, acid anhydrides, imidazole derivatives, organic acid hydrazides, dicyandiamide and derivatives thereof, urea derivatives, and the like. Can be mentioned. Of these, imidazole derivatives are particularly preferable.
- the imidazole derivative is not particularly limited as long as it is a compound having an imidazole skeleton, and examples thereof include 2-ethylimidazole, 2-ethyl-4-methylimidazole, bis-2-ethyl-4-methylimidazole, and 1-methyl.
- -2-alkylimidazole compounds such as 2-ethylimidazole, 2-isopropylimidazole, 2,4-dimethylimidazole, 2-heptadecylimidazole; 2-phenylimidazole, 2-phenyl-4-methylimidazole, 1-benzyl-2- Aryl groups and aralkyl groups such as methylimidazole, 1-benzyl-2-ethylimidazole, 1-benzyl-2-phenylimidazole, benzimidazole, 2-ethyl-4-methyl-1- (2′-cyanoethyl) imidazole, etc. ring
- imidazole compounds substituted with a hydrocarbon group containing a granulation and the like These can be used individually by 1 type or in combination of 2 or more types.
- the blending amount of the curing accelerator in the curable epoxy composition of the present invention is usually 0.1 to 10 parts by weight, preferably 0.5 to 8 parts by weight with respect to 100 parts by weight of the total epoxy compound used. It is.
- the curable epoxy composition of the present invention is used for forming a general electrical insulating film such as a halogen-based flame retardant or a phosphate ester-based flame retardant for the purpose of improving the flame retardancy of the obtained electrical insulating layer.
- a general electrical insulating film such as a halogen-based flame retardant or a phosphate ester-based flame retardant for the purpose of improving the flame retardancy of the obtained electrical insulating layer.
- the curable epoxy composition of the present invention may further include a flame retardant aid, a heat resistance stabilizer, a weather resistance stabilizer, an anti-aging agent, an ultraviolet absorber (laser processability improver), a leveling agent, an antistatic agent, if desired.
- a flame retardant aid such as an agent, a slip agent, an antiblocking agent, an antifogging agent, a lubricant, a dye, a natural oil, a synthetic oil, a wax, an emulsion, a magnetic substance, a dielectric property adjusting agent, and a toughening agent may be appropriately blended.
- the method for producing the curable epoxy composition of the present invention is not particularly limited, and the above components may be mixed as they are, or may be mixed in a state dissolved or dispersed in an organic solvent. Then, a composition in which a part of each of the above components is dissolved or dispersed in an organic solvent is prepared, and the remaining components may be mixed with the composition.
- the film of this invention is a molded object formed by shape
- the curable epoxy composition of the present invention is molded into a sheet or film to obtain a molded product
- the curable epoxy composition of the present invention is applied to a support with an organic solvent added as desired. It is preferably obtained by spraying or casting and then drying.
- Examples of the support used at that time include resin films and metal foils.
- Examples of the resin film include polyethylene terephthalate film, polypropylene film, polyethylene film, polycarbonate film, polyethylene naphthalate film, polyarylate film, and nylon film. Among these films, a polyethylene terephthalate film or a polyethylene naphthalate film is preferable because of excellent heat resistance, chemical resistance, and peelability.
- Examples of the metal foil include copper foil, aluminum foil, nickel foil, chrome foil, gold foil, and silver foil.
- the thickness of the sheet-like or film-like molded product is not particularly limited, but is usually 1 to 150 ⁇ m, preferably 2 to 100 ⁇ m, more preferably 5 to 80 ⁇ m from the viewpoint of workability.
- Examples of the method for applying the curable epoxy composition of the present invention include dip coating, roll coating, curtain coating, die coating, slit coating, and gravure coating.
- the curable epoxy composition of the present invention is in an uncured or semi-cured state as a sheet-shaped or film-shaped molded body.
- uncured means a state in which substantially all of the epoxy compound is dissolved when the molded body is immersed in a solvent capable of dissolving the epoxy compound used in the preparation of the composition.
- Semi-cured is a state in which the epoxy compound is cured halfway to the extent that it can be cured by further heating.
- a part of the epoxy compound is dissolved in a solvent capable of dissolving the epoxy compound used in the preparation of the composition. (Specifically, it is an amount of 7% by weight or more and an amount such that a part remains) or the volume after the molded body is immersed in a solvent for 24 hours is A state in which the volume before immersion is 200% or more (swelling rate).
- the drying temperature is preferably a temperature at which the curable epoxy composition of the present invention is not cured, and is usually 20 to 300 ° C., preferably 30 to 200 ° C. If the drying temperature is too high, the curing reaction proceeds too much, and the resulting molded article may not be in an uncured or semi-cured state.
- the drying time is usually 30 seconds to 1 hour, preferably 1 minute to 30 minutes.
- the film of the present invention thus obtained is used in a state where it is adhered onto the support or peeled off from the support.
- the laminated film of the present invention has an adhesive layer composed of the curable epoxy composition described above and a layer to be plated composed of a resin composition for a layer to be plated.
- the layer to be plated is not particularly limited, but from the viewpoint of improving the electrical properties and heat resistance of the laminated film, 50% by weight or more of the resin constituting the layer is composed of an alicyclic olefin polymer. preferable.
- a resin composition for a to-be-plated layer for forming such a to-be-plated layer what contains the alicyclic olefin polymer which has a polar group, and a hardening
- the alicyclic olefin polymer having a polar group is not particularly limited, and examples of the alicyclic structure include those having a cycloalkane structure or a cycloalkene structure. Those having a cycloalkane structure are preferred because of excellent mechanical strength and heat resistance.
- the polar groups contained in the alicyclic olefin polymer include alcoholic hydroxyl groups, phenolic hydroxyl groups, carboxyl groups, alkoxyl groups, epoxy groups, glycidyl groups, oxycarbonyl groups, carbonyl groups, amino groups, carboxylic acid anhydrides. Physical group, sulfonic acid group, phosphoric acid group and the like. Among these, a carboxyl group, a carboxylic acid anhydride group, and a phenolic hydroxyl group are preferable, and a carboxylic acid anhydride group is more preferable.
- the curing agent contained in the resin composition for the layer to be plated is not particularly limited as long as it can form a crosslinked structure in the alicyclic olefin polymer having a polar group by heating, and is not particularly limited.
- blended with the resin composition for insulating film formation can be used.
- the curing agent it is preferable to use a compound having two or more functional groups capable of reacting with the polar group of the alicyclic olefin polymer having the polar group to be used to form a bond.
- a curing agent suitably used when using an alicyclic olefin polymer having a carboxyl group, a carboxylic anhydride group, or a phenolic hydroxyl group includes a polyvalent epoxy.
- examples thereof include compounds, polyvalent isocyanate compounds, polyvalent amine compounds, polyvalent hydrazide compounds, aziridine compounds, basic metal oxides, and organometallic halides. These may be used alone or in combination of two or more. Moreover, you may use as a hardening
- the curing agent the reactivity with the polar group of the alicyclic olefin polymer having a polar group is moderate, and the handling of the resin composition for the plated layer is facilitated.
- glycidyl ether type epoxy compounds and alicyclic polyvalent epoxy compounds are particularly preferably used.
- the compounding amount of the curing agent in the resin composition for the plating layer is preferably 1 to 100 parts by weight, more preferably 5 to 80 parts by weight with respect to 100 parts by weight of the alicyclic olefin polymer having a polar group. More preferably, it is in the range of 10 to 50 parts by weight.
- the resin composition for a to-be-plated layer used in the present invention may contain a hindered phenol compound or a hindered amine compound in addition to the above components.
- the hindered phenol compound is a phenol compound having a hydroxyl group and having at least one hindered structure in the molecule that does not have a hydrogen atom at the ⁇ -position carbon atom of the hydroxyl group.
- Specific examples of the hindered phenol compound include 1,1,3-tris- (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 4,4′-butylidenebis- (3-methyl-6- tert-butylphenol), 2,2-thiobis (4-methyl-6-tert-butylphenol), n-octadecyl-3- (4′-hydroxy-3 ′, 5′-di-tert-butylphenyl) propionate, And tetrakis- [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane.
- the blending amount of the hindered phenol compound in the resin composition for the plating layer is not particularly limited, but is preferably 0.04 to 10 parts by weight with respect to 100 parts by weight of the alicyclic olefin polymer having a polar group. More preferably, it is in the range of 0.3 to 5 parts by weight, still more preferably 0.5 to 3 parts by weight.
- the hindered amine compound is a compound having in the molecule at least one 2,2,6,6-tetraalkylpiperidine group having a secondary amine or a tertiary amine at the 4-position.
- the carbon number of alkyl is usually 1 to 50.
- a compound having at least one 2,2,6,6-tetramethylpiperidyl group having a secondary amine or a tertiary amine at the 4-position in the molecule is preferable.
- a hindered phenol compound and a hindered amine compound in combination, and by using these together, an aqueous solution of permanganate for a cured product obtained by curing the laminated film of the present invention.
- hindered amine compounds include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, 1 [2 - ⁇ 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionyloxy ⁇ ethyl] -4- ⁇ 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionyloxy ⁇ -2,2,6,6-tetramethylpiperidine, 8-benzyl-7,7,9,9-tetramethyl-3-octyl-1,2,3-triazaspiro [4,5] undecane-2,4- Examples include dione.
- the blending amount of the hindered amine compound is not particularly limited, but is usually 0.02 to 10 parts by weight, preferably 0.2 to 5 parts by weight, based on 100 parts by weight of the alicyclic olefin polymer having a polar group.
- the amount is preferably 0.25 to 3 parts by weight.
- the resin composition for a to-be-plated layer used in the present invention may contain a curing accelerator in addition to the above components.
- a curing accelerator blended in a general resin composition for forming an electric insulation film may be used.
- the same curing accelerator as that of the curable epoxy composition of the present invention described above is used. be able to.
- the blending amount of the curing accelerator in the resin composition for the layer to be plated may be appropriately selected according to the purpose of use, but is preferably 0 with respect to 100 parts by weight of the alicyclic olefin polymer having a polar group. 0.001 to 30 parts by weight, more preferably 0.01 to 10 parts by weight, still more preferably 0.03 to 5 parts by weight.
- the resin composition for to-be-plated layer used by this invention may contain the filler other than the said component.
- a filler the thing similar to the filler used for the curable epoxy composition mentioned above can be used.
- the blending amount of the filler is usually 1 to 50% by weight, preferably 2 to 45% by weight, more preferably 3 to 35% by weight in terms of solid content. .
- the resin composition for to-be-plated layer used by this invention is a hardening accelerator, a flame retardant, a flame retardant adjuvant, and a heat stabilizer other than the said component similarly to the curable epoxy composition of this invention mentioned above.
- Known components such as emulsions, magnetic materials, dielectric property adjusting agents, toughening agents, and the like may be appropriately blended. What is necessary is just to select suitably the mixture ratio of these arbitrary components in the range which does not impair the objective of this invention.
- the method for producing the resin composition for a layer to be plated used in the present invention is not particularly limited, and the above components may be mixed as they are, or mixed in a state dissolved or dispersed in an organic solvent.
- a composition in which a part of each of the above components is dissolved or dispersed in an organic solvent may be prepared, and the remaining components may be mixed with the composition.
- the laminated film of the present invention is produced using such a resin composition for a layer to be plated and the above-described curable epoxy composition of the present invention.
- the laminated film of the present invention has, for example, the following two methods: (1) The above-described resin composition for a layer to be plated is applied, spread or cast on a support, and is dried as desired.
- a method for producing the above-mentioned cured resin composition by further coating or casting on it and drying it as desired; (2) coating and spreading the above-mentioned resin composition for a layer to be plated on a support;
- a molded body for a layer to be plated formed by casting and drying as desired is formed, and the above-described curable epoxy composition is applied, dispersed or cast on a support.
- It can be produced by a method of producing a laminate by laminating the molded body for an adhesive layer, which is dried if desired and formed into a sheet or film, and integrating these molded bodies.
- the production method (1) is preferred because it is an easier process and is excellent in productivity.
- a curable epoxy is applied to the resin composition for a layer to be plated, which is applied, spread or cast on the support, and when the resin composition for the layer to be plated is applied, spread or cast.
- the resin composition for the layer to be plated and the curable epoxy composition are formed into a sheet shape or a film shape for the layer to be plated.
- the resin composition for the layer to be plated or the curable epoxy composition may be applied, spread or cast on the support by adding an organic solvent as desired. preferable.
- Examples of the support used at that time include resin films and metal foils.
- the resin film include polyethylene terephthalate film, polypropylene film, polyethylene film, polycarbonate film, polyethylene naphthalate film, polyarylate film, and nylon film. Among these films, a polyethylene terephthalate film or a polyethylene naphthalate film is preferable from the viewpoint of heat resistance, chemical resistance, peelability, and the like.
- the metal foil include copper foil, aluminum foil, nickel foil, chrome foil, gold foil, and silver foil.
- the average surface roughness Ra of the support is usually 300 nm or less, preferably 150 nm or less, more preferably 100 nm or less.
- the thickness of the layer to be plated when laminated film is preferably 1 to 10 ⁇ m, more preferably 1.5 to 8 ⁇ m, still more preferably 2 to 5 ⁇ m, and the thickness of the adhesive layer is not particularly limited.
- the thickness is preferably 10 to 100 ⁇ m, more preferably 10 to 80 ⁇ m, and even more preferably 15 to 60 ⁇ m.
- the formability of the conductor layer may be reduced when the conductor layer is formed by electroless plating on the cured product obtained by curing the laminated film. If the thickness of the layer to be plated is too thick, the linear expansion of the cured product obtained by curing the laminated film may be increased. Moreover, when the thickness of an adhesive layer is too thin, there exists a possibility that the wiring embedding property of a laminated
- Examples of the method for applying the resin composition for the plating layer and the curable epoxy composition include dip coating, roll coating, curtain coating, die coating, slit coating, and gravure coating.
- drying may be performed as desired.
- the drying temperature is preferably set to a temperature at which the resin composition for the layer to be plated and the curable epoxy composition are not cured, and is usually 20 to 300 ° C., preferably 30 to 200 ° C.
- the drying time is usually 30 seconds to 1 hour, preferably 1 minute to 30 minutes.
- the layer to be plated and the adhesive layer constituting the laminated film are in an uncured or semi-cured state.
- the laminated film of the present invention can be made highly adhesive.
- the laminated film of the present invention can exhibit excellent peel strength of plating due to the layer to be plated.
- the prepreg of the present invention comprises a fiber base material in the above-described film of the present invention or the laminated film of the present invention.
- the fiber substrate examples include organic fibers such as polyamide fiber, polyaramid fiber and polyester fiber, and inorganic fibers such as glass fiber and carbon fiber.
- organic fibers such as polyamide fiber, polyaramid fiber and polyester fiber
- inorganic fibers such as glass fiber and carbon fiber.
- the form of textiles such as a plain weave or a twill, or the form of a nonwoven fabric, etc. are mentioned.
- the thickness of the fiber substrate is preferably 5 to 100 ⁇ m, and more preferably 10 to 50 ⁇ m. If it is too thin, handling becomes difficult, and if it is too thick, the resin layer becomes relatively thin and the wiring embedding property may be insufficient.
- the prepreg of the present invention When the prepreg of the present invention comprises the above-described film of the present invention and a fiber substrate, the prepreg of the present invention impregnates the fiber substrate with the curable epoxy composition of the present invention. Can be manufactured.
- the method for impregnating the fiber base material with the curable epoxy composition of the present invention is not particularly limited, but an organic solvent is added to the curable epoxy composition of the present invention in order to adjust the viscosity and the like.
- a method of immersing a fiber substrate in a curable epoxy composition to which an organic solvent has been added a method of applying or spraying a curable epoxy composition to which an organic solvent has been added to the fiber substrate, and the like.
- a curable epoxy composition to which an organic solvent is added can be applied or sprayed on a fiber substrate placed on a support.
- the curable epoxy composition of the present invention is in an uncured or semi-cured state, similarly to the above-described sheet-shaped or film-shaped molded body. It is preferably contained.
- drying may be performed as desired.
- the drying temperature is preferably a temperature at which the curable epoxy composition of the present invention is not cured, and is usually 20 to 300 ° C., preferably 30 to 200 ° C. If the drying temperature is too high, the curing reaction proceeds too much, and the resulting composite molded article may not be in an uncured or semi-cured state.
- the drying time is usually 30 seconds to 1 hour, preferably 1 minute to 30 minutes.
- the prepreg of the present invention comprises a fiber base material in the above-described laminated film of the present invention
- the prepreg of the present invention has an adhesive layer on one surface and a plate to be plated on the other surface. It is preferable to have a layer and a fiber substrate inside, and the production method is not limited.
- the following methods (1) For the curable epoxy composition film with support and the layer to be plated with support A method for producing a resin composition film by laminating the resin layer side of each film so that the fiber base material is sandwiched between them, and laminating under conditions such as pressure, vacuum, and heating as required; (2) A fiber base material is impregnated with either a curable epoxy composition or a resin composition for a layer to be plated, and dried as desired to prepare a prepreg, and the other resin composition is applied to the prepreg.
- a method of producing by spraying or casting, or by laminating another resin composition film with a support; (3) a curable epoxy composition or a resin composition for a layer to be plated on the support; Laminate one by coating, spreading or casting, stacking the fiber substrate on top of it, and then laminating the other resin composition by coating, spreading or casting, and drying as desired Can be manufactured.
- an organic solvent is added to the composition as desired, and the viscosity of the composition is adjusted to improve the workability in impregnation into the fiber base material, application to the support, spraying or casting. It is preferable to control.
- the thickness of the prepreg of the present invention is not particularly limited, but the thickness of the layer to be plated is preferably 1 to 10 ⁇ m, more preferably 1.5 to 8 ⁇ m, still more preferably 2 to 5 ⁇ m, and the thickness of the adhesive layer is The thickness is preferably 10 to 100 ⁇ m, more preferably 10 to 80 ⁇ m, and even more preferably 15 to 60 ⁇ m.
- Examples of the method for applying the resin composition for a layer to be plated and the curable epoxy composition when producing the prepreg of the present invention include dip coating, roll coating, curtain coating, die coating, slit coating, and gravure coating. .
- the resin composition constituting the prepreg is in an uncured or semi-cured state, like the above-described film and laminated film of the present invention.
- the prepreg of the present invention thus obtained can be made into a cured product by heating and curing it.
- the soot curing temperature is usually 30 to 400 ° C., preferably 70 to 300 ° C., more preferably 100 to 200 ° C.
- the curing time is 0.1 to 5 hours, preferably 0.5 to 3 hours.
- the heating method is not particularly limited, and may be performed using, for example, an electric oven.
- the laminate of the present invention is obtained by laminating the above-described film, laminated film or prepreg of the present invention on a substrate.
- the laminate of the present invention at least the film of the present invention, the laminated film or the prepreg described above may be laminated, but the substrate having the conductor layer on the surface, the film of the present invention described above, and the laminate What laminates
- a substrate having a conductor layer on its surface has a conductor layer on the surface of the electrically insulating substrate.
- the electrically insulating substrate is a resin containing a known electrically insulating material (for example, alicyclic olefin polymer, epoxy compound, maleimide resin, (meth) acrylic resin, diallyl phthalate resin, triazine resin, polyphenylene ether, glass, etc.) It is formed by curing the composition.
- a conductor layer is not specifically limited, Usually, it is a layer containing the wiring formed with conductors, such as an electroconductive metal, Comprising: Various circuits may be included further. The configuration and thickness of the wiring and circuit are not particularly limited.
- the substrate having a conductor layer on the surface include a printed wiring board and a silicon wafer substrate.
- the thickness of the substrate having a conductor layer on the surface is usually 10 ⁇ m to 10 mm, preferably 20 ⁇ m to 5 mm, more preferably 30 ⁇ m to 2 mm.
- the substrate having a conductor layer on the surface used in the present invention is preferably pretreated on the surface of the conductor layer in order to improve adhesion to the electrical insulating layer.
- a pretreatment method a known technique can be used without any particular limitation.
- an oxidation treatment method in which a strong alkali oxidizing solution is brought into contact with the surface of the conductor layer to form a copper oxide layer on the conductor surface and roughened, After oxidation with this method, reduce with sodium borohydride, formalin, etc., deposit and roughen the plating on the conductor layer, contact the organic acid with the conductor layer to elute the copper grain boundaries and roughen And a method of forming a primer layer with a thiol compound or a silane compound on the conductor layer.
- the laminate of the present invention is usually a molded product obtained by molding the above-described film of the present invention (that is, the curable epoxy composition of the present invention into a sheet or film) on a substrate having a conductor layer on the surface. ), A laminated film (that is, a sheet-like or film-like molded product comprising an adhesive layer comprising the curable epoxy composition of the present invention and a layer to be plated), or a prepreg (including a fiber substrate in the film of the present invention). Or a composite molded body comprising a fiber base material on the laminated film of the present invention can be produced by thermocompression bonding.
- thermocompression bonding As a method of thermocompression bonding, a molded body with a support or a composite molded body is superposed so as to be in contact with the conductor layer of the substrate described above, and a pressure laminator, a press, a vacuum laminator, a vacuum press, a roll laminator or the like The method of carrying out thermocompression bonding (lamination) using is mentioned. By heating and pressurizing, bonding can be performed so that there is substantially no void at the interface between the conductor layer on the substrate surface and the molded body or composite molded body.
- the molded body or composite molded body is usually laminated on the conductor layer of the substrate in an uncured or semi-cured state.
- the temperature for the thermocompression bonding operation is usually 30 to 250 ° C., preferably 70 to 200 ° C.
- the applied pressure is usually 10 kPa to 20 MPa, preferably 100 kPa to 10 MPa
- the time is usually 30 seconds to 5
- the time is preferably 1 minute to 3 hours.
- the thermocompression bonding is preferably performed under reduced pressure in order to improve the embedding property of the wiring pattern and suppress the generation of bubbles.
- the pressure under reduced pressure for thermocompression bonding is usually 100 kPa to 1 Pa, preferably 40 kPa to 10 Pa.
- the cured product of the present invention is formed by curing the curable epoxy composition of the present invention, and is formed by curing the film, laminated film, prepreg, and laminate of the present invention that are composed of the composition. Any are included. Curing can be performed by appropriately heating the curable epoxy composition or film of the present invention under the curing conditions described below.
- the laminated body of this invention can be set as hardened
- Curing is usually performed by heating the entire substrate on which the film, laminated film or prepreg of the present invention is formed on the conductor layer. Curing can be performed simultaneously with the above-described thermocompression bonding operation. Alternatively, the thermocompression may be performed after the thermocompression operation is performed under conditions that do not cause curing, that is, at a relatively low temperature and in a short time.
- the film of the present invention uses the curable epoxy composition of the present invention, but the epoxy compound is cured with a triazine structure-containing phenol resin (C) or an active ester compound (D) that acts as a curing agent. Since the melt viscosity at the time of heating is low and excellent resin fluidity is exhibited, the electrically insulating layer made of the obtained cured resin exhibits good wiring embedding properties.
- two or more films, laminated films or prepregs of the present invention are bonded and laminated on the conductor layer of the substrate. Also good.
- the soot curing temperature is usually 30 to 400 ° C., preferably 70 to 300 ° C., more preferably 100 to 200 ° C.
- the curing time is usually 0.1 to 5 hours, preferably 0.5 to 3 hours.
- the heating method is not particularly limited, and may be performed using, for example, an electric oven.
- the composite of the present invention is formed by forming a conductor layer on the surface of the cured product of the present invention described above.
- the composite of the present invention is obtained by forming another conductor layer on the electrical insulating layer of the laminate.
- the conductor layer metal plating or metal foil can be used.
- the metal plating material include gold, silver, copper, rhodium, palladium, nickel, and tin
- examples of the metal foil include those used as a support for the above-described film, laminated film, or prepreg.
- the method using metal plating as the conductor layer is preferred from the viewpoint that fine wiring is possible.
- the manufacturing method of the composite of the present invention will be described by exemplifying a multilayer circuit board using metal plating as a conductor layer as an example of the composite of the present invention.
- a via hole or a through hole penetrating the electrical insulating layer is formed in the laminate.
- the via hole is formed to connect the respective conductor layers constituting the multilayer circuit board when the multilayer circuit board is used.
- the via hole or the through hole can be formed by chemical processing such as photolithography or physical processing such as drilling, laser, or plasma etching.
- a laser method carbon dioxide laser, excimer laser, UV-YAG laser, etc.
- a finer via hole can be formed without degrading the characteristics of the electrical insulating layer.
- the surface roughening process which roughens the surface of the electric insulation layer (namely, hardened
- the surface roughening treatment is performed in order to improve the adhesion with the conductor layer formed on the electrical insulating layer.
- the surface average roughness Ra of the electrical insulating layer is preferably 0.05 ⁇ m or more and less than 0.5 ⁇ m, more preferably 0.06 ⁇ m or more and 0.3 ⁇ m or less, and the surface 10-point average roughness Rzjis is preferably 0.00. They are 3 micrometers or more and less than 5 micrometers, More preferably, they are 0.5 micrometers or more and 3 micrometers or less.
- Ra is the arithmetic average roughness shown in JIS B0601-2001
- the surface ten-point average roughness Rzjis is the ten-point average roughness shown in JIS B0601-2001 appendix 1.
- the surface roughening treatment method is not particularly limited, and examples thereof include a method of bringing the surface of the electrical insulating layer into contact with an oxidizing compound.
- the oxidizing compound include known compounds having oxidizing ability, such as inorganic oxidizing compounds and organic oxidizing compounds.
- an inorganic oxidizing compound or an organic oxidizing compound In view of easy control of the surface average roughness of the electrical insulating layer, it is particularly preferable to use an inorganic oxidizing compound or an organic oxidizing compound.
- inorganic oxidizing compounds include permanganate, chromic anhydride, dichromate, chromate, persulfate, activated manganese dioxide, osmium tetroxide, hydrogen peroxide, periodate, and the like.
- the organic oxidizing compound include dicumyl peroxide, octanoyl peroxide, m-chloroperbenzoic acid, peracetic acid, and ozone.
- the method of surface roughening the surface of the electrical insulating layer using an inorganic oxidizing compound or an organic oxidizing compound there is a method in which an oxidizing compound solution prepared by dissolving the oxidizing compound in a soluble solvent is brought into contact with the surface of the electrical insulating layer.
- the method of bringing the oxidizing compound solution into contact with the surface of the electrical insulating layer is not particularly limited.
- the dipping method in which the electrical insulating layer is immersed in the oxidizing compound solution, the surface tension of the oxidizing compound solution is used.
- Any method may be used, such as a liquid filling method in which the oxidizing compound solution is placed on the electric insulating layer, or a spray method in which the oxidizing compound solution is sprayed on the electric insulating layer.
- a liquid filling method in which the oxidizing compound solution is placed on the electric insulating layer
- a spray method in which the oxidizing compound solution is sprayed on the electric insulating layer.
- the temperature and time for bringing these oxidizing compound solutions into contact with the surface of the electrical insulating layer may be arbitrarily set in consideration of the concentration and type of the oxidizing compound, the contact method, and the like.
- the temperature is 100 ° C., preferably 20 to 90 ° C., and the time is usually 0.5 to 60 minutes, preferably 1 to 40 minutes.
- the surface of the electrical insulating layer after the surface roughening treatment is washed with water in order to remove the oxidizing compound.
- the substance can be further washed with a dissolvable cleaning solution or brought into contact with other compounds to make it soluble in water. Wash with water.
- an alkaline aqueous solution such as an aqueous potassium permanganate solution or an aqueous sodium permanganate solution is brought into contact with the electrical insulating layer
- a mixed solution of hydroxylamine sulfate and sulfuric acid is used to remove the generated manganese dioxide film. It can wash
- a conductor layer is formed on the surface of the electrical insulating layer and the inner wall surfaces of the via holes and through holes.
- the conductive layer is preferably formed by an electroless plating method from the viewpoint that a conductive layer having excellent adhesion can be formed.
- catalyst nuclei such as silver, palladium, zinc, and cobalt are formed on the electrical insulation layer. It is common to attach.
- the method for attaching the catalyst nucleus to the electrical insulating layer is not particularly limited.
- a metal compound such as silver, palladium, zinc, or cobalt, or a salt or complex thereof is added to water or an organic solvent such as alcohol or chloroform to 0.001.
- Examples include a method of reducing the metal after dipping in a solution dissolved at a concentration of ⁇ 10% by weight (optionally containing an acid, alkali, complexing agent, reducing agent, etc.).
- electroless plating solution used in the electroless plating method a known autocatalytic electroless plating solution may be used, and the metal species, reducing agent species, complexing agent species, hydrogen ion concentration, The dissolved oxygen concentration is not particularly limited.
- electroless nickel-phosphorous plating solution using sodium hypophosphite as reducing agent Electroless nickel-boron plating solution using dimethylamine borane as reducing agent; electroless palladium plating solution; electroless palladium-phosphorous plating solution using sodium hypophosphite as reducing agent; electroless gold plating solution; electroless silver Plating solution: An electroless plating solution such as an electroless nickel-cobalt-phosphorous plating solution using sodium hypophosphite as a reducing agent can be used.
- the substrate surface can be brought into contact with a rust inhibitor and subjected to rust prevention treatment.
- a metal thin film can also be heated in order to improve adhesiveness.
- the heating temperature is usually 50 to 350 ° C., preferably 80 to 250 ° C. In this case, heating may be performed under a pressurized condition.
- a pressurizing method at this time for example, a method using a physical pressurizing means such as a hot press machine or a pressurizing and heating roll machine can be cited.
- the applied pressure is usually 0.1 to 20 MPa, preferably 0.5 to 10 MPa. If it is this range, the high adhesiveness of a metal thin film and an electrically insulating layer is securable.
- a resist pattern for plating is formed on the metal thin film thus formed, and further, plating is grown thereon by wet plating such as electrolytic plating (thick plating), then the resist is removed, and further etched.
- the metal thin film is etched into a pattern to form a conductor layer. Therefore, the conductor layer formed by this method usually consists of a patterned metal thin film and plating grown thereon.
- a metal foil when used instead of metal plating as the conductor layer constituting the multilayer circuit board, it can be manufactured by the following method.
- a laminate composed of an electrically insulating layer made of a film or prepreg and a conductor layer made of a metal foil is prepared.
- the curable epoxy composition has a degree of curing that can maintain each required characteristic, and there is no problem when it is processed afterwards or when a multilayer circuit board is formed.
- the laminated body comprised from the electrically insulating layer which consists of such a film or a prepreg, and the conductor layer which consists of metal foil can be used also for a printed wiring board by a well-known subtractive method, for example.
- via holes and through holes penetrating the electrical insulating layer are formed in the prepared laminated body, and then the laminated body in which through holes are formed in order to remove the resin residue in the formed via holes.
- the method of a desmear process is not specifically limited, For example, the method of contacting the solution (desmear liquid) of oxidizing compounds, such as a permanganate, is mentioned.
- the laminated body formed with via holes is rock-immersed in an aqueous solution at 60 to 90 ° C. adjusted to have a sodium permanganate concentration of 70 g / liter and a sodium hydroxide concentration of 40 g / liter for 1 to 50 minutes.
- desmear processing can be performed.
- a conductor layer is formed on the inner wall surface of the via hole.
- the method for forming the conductor layer is not particularly limited, and either an electroless plating method or an electrolytic plating method can be used. From the viewpoint that a conductor layer having excellent adhesion can be formed, metal plating is used as the above-described conductor layer. It can carry out by the electroless-plating method similarly to the method of forming.
- the conductor layer formed by this method usually consists of a patterned metal foil and plating grown thereon.
- the multilayer circuit board obtained as described above is used as a substrate for manufacturing the above-described laminate, and this is thermocompression-bonded with the above-described molded body or composite molded body and cured to form an electrical insulating layer. Further, by further forming a conductor layer according to the above-described method and repeating these, further multilayering can be performed, whereby a desired multilayer circuit board can be obtained.
- the composite of the present invention thus obtained (and the multilayer circuit board as an example of the composite of the present invention) has an electrical insulating layer (cured product of the present invention) comprising the curable epoxy composition of the present invention.
- the electrical insulating layer is excellent in heat resistance and electrical properties in a well-balanced manner, and also has excellent adhesion to the conductor layer (particularly, adhesion to the conductor layer after a high temperature and high humidity test). Therefore, the composite of the present invention (and the multilayer circuit board as an example of the composite of the present invention) can be suitably used for various applications.
- substrate for electronic materials of this invention consists of the hardened
- the substrate for electronic material of the present invention comprising such a cured product or composite of the present invention is a mobile phone, PHS, notebook computer, PDA (personal digital assistant), mobile video phone, personal computer, supercomputer, server, Router, liquid crystal projector, engineering workstation (EWS), pager, word processor, TV, viewfinder type or monitor direct view type video tape recorder, electronic notebook, electronic desk calculator, car navigation device, POS terminal, device with touch panel It can use suitably for various electronic devices.
- Dissipation factor (electrical characteristics) A small piece having a width of 2.0 mm, a length of 80 mm, and a thickness of 40 ⁇ m is cut out from the film-like cured product, and a dielectric loss tangent is measured at 10 GHz using a cavity resonator perturbation method dielectric constant measuring apparatus. The characteristics were evaluated. (Evaluation criteria) A: Dielectric tangent is less than 0.0065 B: Dielectric tangent is 0.0065 or more and less than 0.070 C: Dielectric tangent is 0.0070 or more
- the support is peeled off from the surface of the film molded body opposite to the resin layer, and the surface of the resin layer that appears is etched with a glass epoxy copper clad laminate (FR-4) etched by about 2 ⁇ m with the etching agent.
- FR-4 glass epoxy copper clad laminate
- the treated surfaces were stacked and heat-pressed using a vacuum laminator under the same conditions as described above.
- the composite molded body thus obtained was heated in an oven at 180 ° C. for 90 minutes to obtain a cured laminate.
- the peel strength of the copper foil from the obtained cured laminate was measured according to JIS C6481, and evaluated according to the following evaluation criteria.
- Example 1 (Preparation of curable epoxy composition) 50 parts of a biphenyl dimethylene skeleton novolak type epoxy resin (trade name “NC-3000L”, manufactured by Nippon Kayaku Co., Ltd., epoxy equivalent 269) as a polyvalent epoxy compound (A) having a biphenyl structure, a trivalent or higher polyhydric phenol Type epoxy compound (B) as tetrakishydroxyphenylethane type epoxy compound (trade name “jER 1031S”, manufactured by Mitsubishi Chemical Corporation, epoxy equivalent 200, softening point 90 ° C.) 50 parts, triazine structure-containing phenol resin (C) 30 parts of triazine structure-containing cresol novolak resin (trade name “Phenolite LA-3018-50P”, propylene glycol monomethyl ether solution with 50% non-volatile content, DIC, active hydroxyl group equivalent 154) (triazine structure-containing cresol novolak resin) 15 parts in conversion), active 115.3 parts of active ester compound (trade name “Epicron HP
- the varnish of the curable epoxy composition obtained above is a polyethylene terephthalate film having a size of length 300 mm ⁇ width 300 mm, thickness 38 ⁇ m, and surface average roughness Ra 0.08 ⁇ m using a die coater.
- a die coater [Support: Lumirror (registered trademark) T60 manufactured by Toray Industries, Inc.], then dried in a nitrogen atmosphere at 80 ° C. for 10 minutes, and formed into a film of 43 ⁇ m thick curable epoxy composition on the support Got the body.
- the initial adhesion and the adhesion after the high-temperature and high-humidity test were evaluated according to the above methods. The results are shown in Table 1.
- the cured resin with a copper foil was cut out and the copper foil was dissolved in a 1 mol / L ammonium persulfate aqueous solution to obtain a film-like cured product.
- the glass transition temperature and dielectric loss tangent were measured according to the above methods. The results are shown in Table 1.
- Examples 2-5, Comparative Examples 1-5 In the same manner as in Example 1 except that the formulation was changed according to the compositions of the curable epoxy compositions in Examples 2 to 5 and Comparative Examples 1 to 5 in Table 1, the varnish and film molded body of the curable epoxy composition And the film-like hardened
- “Trishydroxyphenylmethane type epoxy compound” means a trishydroxyphenylmethane type epoxy compound (trade name “jER 1032H60”, Mitsubishi Chemical Corporation) as a trivalent or higher polyhydric phenol type epoxy compound (B).
- Phenol novolak type epoxy compound having phosphaphenanthrene structure is a phenol novolak type epoxy compound having phosphaphenanthrene structure (trade name “FX-289BEK75”, Nippon Steel Made by Sumikin Chemical Co., Ltd., methyl ethyl ketone solution with a solid content of 75%, phosphorus content 2%, epoxy equivalent 305), “bisphenol A type epoxy compound” is bisphenol A type epoxy compound (trade name “jER 828EL”, manufactured by Mitsubishi Chemical Corporation) , Epoch Eq 186, a liquid).
- the resulting film-like cured product is inferior in heat resistance (Comparative Example 1), and has a biphenyl structure and / or condensation.
- the polyvalent epoxy compound (A) having a polycyclic structure was not contained, the obtained film-like cured product was inferior in electrical characteristics (Comparative Examples 2 and 3).
- the triazine structure-containing phenol resin (C) is not contained, the obtained film-like cured product is inferior in adhesion after the initial stage and after the high-temperature and high-humidity test (Comparative Example 4).
- a bisphenol A type epoxy compound was used in place of the monohydric phenol type epoxy compound (B), the resulting film-like cured product was inferior in heat resistance and adhesion after a high temperature and high humidity test. (Comparative Example 5).
- Synthesis example 1 As the first stage of polymerization, 35 mol parts of 5-ethylidene-bicyclo [2.2.1] hept-2-ene, 0.9 mol parts of 1-hexene, 340 mol parts of anisole and 0.005 mol parts of C1063 The solution was charged into a pressure-resistant glass reactor substituted with nitrogen and subjected to a polymerization reaction at 80 ° C. for 30 minutes with stirring to obtain a solution of a norbornene-based ring-opening polymer. Next, tetracyclo [6.5.0.1 2,5 ... In the solution obtained in the first stage of polymerization as the second stage of polymerization.
- the weight average molecular weight of the alicyclic olefin polymer (1) was 60,000, the number average molecular weight was 30,000, and the molecular weight distribution was 2.
- the hydrogenation rate was 95%, and the content of repeating units having a carboxylic anhydride group was 20 mol%.
- the solid content concentration of the alicyclic olefin polymer (1) solution was 22%.
- Example 6 (Resin composition for plated layer) 454 parts of an alicyclic olefin polymer (1) solution obtained in Synthesis Example 1 [100 parts in terms of alicyclic olefin polymer (1)], a polyvalent epoxy having a dicyclopentadiene skeleton as a curing agent 36 parts of a compound (trade name “Epicron HP7200L”, manufactured by DIC, “Epicron” is a registered trademark), silica as an inorganic filler (trade name “Admafine SO-C1”, manufactured by Admatechs, average particle size 0.
- “Admafine” is a registered trademark 24.5 parts, Tris (3,5-di-tert-butyl-4-hydroxybenzyl) -isocyanurate (trade name “Irganox®”) as an anti-aging agent 3114 ", manufactured by BASF), 2- [2-hydroxy-3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] -2H-ben as UV absorber
- Tris (3,5-di-tert-butyl-4-hydroxybenzyl) -isocyanurate (trade name “Irganox®”) as an anti-aging agent 3114 ", manufactured by BASF)
- 2- [2-hydroxy-3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] -2H-ben as UV absorber
- Example 2 the varnish of the curable epoxy composition obtained in Example 1 was applied to the surface of the layer to be plated formed of the resin composition for the layer to be plated of the film with support, with a doctor blade (manufactured by Tester Sangyo Co., Ltd.) Coating with an auto film applicator (manufactured by Tester Sangyo Co., Ltd.), followed by drying at 80 ° C. for 10 minutes in a nitrogen atmosphere to form a laminate with a support on which a layer to be plated and an adhesive layer having a total thickness of 43 ⁇ m are formed A film was obtained.
- the laminated film with a support was formed in the order of a support, a plated layer made of a resin composition for a plated layer, and an adhesive layer made of a curable epoxy composition.
- the primary press is thermocompression bonding at a temperature of 110 ° C. and a pressure of 0.1 MPa for 90 seconds under a reduced pressure of 200 Pa using a vacuum laminator provided with heat-resistant rubber press plates at the top and bottom. Furthermore, using a hydraulic press device provided with metal press plates at the top and bottom, thermocompression bonding was performed at a pressure bonding temperature of 110 ° C. and 1 MPa for 90 seconds.
- the support was peeled off to obtain a laminate of a resin layer and an inner layer substrate composed of a curable epoxy composition and a resin composition for a layer to be plated. Further, the laminate was left in an air atmosphere at 180 ° C. for 60 minutes to cure the resin layer and form an electrical insulating layer on the inner layer substrate.
- the obtained laminate cured product was prepared to have a swelling liquid (“Swelling Dip Securigant P”, manufactured by Atotech, “Securigant” is a registered trademark), 500 mL / L, and sodium hydroxide 3 g / L. After dipping in an aqueous solution at 15 ° C. for 15 minutes, it was washed with water.
- a swelling liquid “Swelling Dip Securigant P”, manufactured by Atotech, “Securigant” is a registered trademark
- 500 mL / L 500 mL / L
- sodium hydroxide 3 g / L sodium hydroxide
- a hydroxylamine sulfate aqueous solution (“Reduction Securigant P 500”, manufactured by Atotech Co., Ltd., “Securigant” is a registered trademark) is 100 mL / L, and an aqueous solution at 40 ° C. prepared to have a sulfuric acid of 35 mL / L is laminated with a laminate. The cured product was immersed for 5 minutes, neutralized and reduced, and then washed with water.
- the laminate cured product is placed in an aqueous solution at 50 ° C. adjusted to a concentration of 50 ml / L with an aqueous cleaner / conditioner aqueous solution (“Alcup MCC-6-A”, manufactured by Uemura Kogyo Co., Ltd., “Alcup” is a registered trademark) for 5 minutes. Immersion and treatment with cleaner and conditioner were performed. Next, the laminate cured product was immersed in 40 ° C. washing water for 1 minute, and then washed with water.
- the laminate cured product was immersed in an aqueous solution prepared so as to have a sulfuric acid concentration of 100 g / L for 1 minute to perform pickling treatment, and then washed with water.
- Alcup Activator MAT-1-A (trade name, manufactured by Uemura Kogyo Co., Ltd., “Alcup” is a registered trademark) is 200 mL / L
- Alcup Activator MAT-1-B (trade name, manufactured by Uemura Kogyo Co., Ltd., “Alcup” is The cured laminate was immersed in a 60 ° C. Pd salt-containing plating catalyst aqueous solution prepared so that the registered trademark was 30 mL / L and sodium hydroxide was 0.35 g / L, and then washed with water.
- Alcup Redeusa MAB-4-A (trade name, manufactured by Uemura Kogyo Co., Ltd., “Alcup” is a registered trademark) is 20 mL / L
- Alcup Redeusa MAB-4-B (trade name, manufactured by Uemura Kogyo Co., Ltd., “ “Alcup” was a laminate obtained by immersing the laminate cured product in an aqueous solution adjusted to 200 mL / L at 35 ° C. for 3 minutes to reduce the plating catalyst, and then washed with water.
- Sulcup PEA-6-A (trade name, manufactured by Uemura Kogyo Co., Ltd., “Sulcup” is a registered trademark), 100 mL / L, Sulcup PEA-6-B-2X (trade name) , Uemura Kogyo Co., Ltd.) 50 mL / L, Sulcup PEA-6-C (trade name, Uemura Kogyo Co., Ltd.) 14 mL / L, Sulcup PEA-6-D (trade name, Uemura Kogyo Co., Ltd.) 15 mL / L, Sulcup PEA -6-E (trade name, manufactured by Uemura Kogyo Co., Ltd.) 50 mL / L, 37% immersion in formalin aqueous solution 5 mL / L, immersed in electroless copper plating solution at a temperature of 36 ° C. for 20 minutes. Then,
- the laminate cured product on which the electroless plating film was formed was annealed at 150 ° C. for 30 minutes in an air atmosphere.
- An electrolytic copper plating film was applied to the cured laminate obtained by annealing to form an electrolytic copper plating film having a thickness of 30 ⁇ m.
- the multilayer cured product is heat-treated at 180 ° C. for 60 minutes to obtain a multilayer printed wiring board having two layers on both sides in which a conductor layer composed of the metal thin film layer and the electrolytic copper plating film is formed on the cured laminate. It was.
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Abstract
Description
〔1〕ビフェニル構造及び/又は縮合多環構造を有する多価エポキシ化合物(A)と、3価以上の多価フェノール型エポキシ化合物(B)と、トリアジン構造含有フェノール樹脂(C)と、を含有してなる硬化性エポキシ組成物、
〔2〕前記3価以上の多価フェノール型エポキシ化合物(B)が、下記一般式(1)で示される構造を有するエポキシ化合物を含む、請求項1に記載の硬化性エポキシ組成物、
〔3〕前記3価以上の多価フェノール型エポキシ化合物(B)が、下記一般式(2)~(5)で示されるいずれかの構造を有するエポキシ化合物を含む、請求項1又は2に記載の硬化性エポキシ組成物、
〔5〕前記トリアジン構造含有フェノール樹脂(C)の含有割合が、硬化性エポキシ組成物中に含有されるエポキシ化合物の合計100重量部に対して、1~60重量部である前記〔1〕~〔4〕のいずれかに記載の硬化性エポキシ組成物、
〔6〕活性エステル化合物(D)をさらに含有する前記〔1〕~〔5〕のいずれかに記載の硬化性エポキシ組成物、
〔7〕前記〔1〕~〔6〕のいずれかに記載の硬化性エポキシ組成物からなるフィルム、
〔8〕前記〔1〕~〔6〕のいずれかに記載の硬化性エポキシ組成物からなる接着層と、被めっき層用樹脂組成物からなる被めっき層と、を有する積層フィルム、
〔9〕前記〔7〕に記載のフィルム又は前記〔8〕に記載の積層フィルムと、繊維基材と、からなるプリプレグ、
〔10〕前記〔7〕に記載のフィルム、前記〔8〕に記載の積層フィルム又は前記〔9〕に記載のプリプレグを、基材に積層してなる積層体、
〔11〕前記〔1〕、〔2〕、〔3〕、〔4〕、〔5〕若しくは〔6〕に記載の硬化性エポキシ組成物、前記〔7〕に記載のフィルム、前記〔8〕に記載の積層フィルム、前記〔9〕に記載のプリプレグ、又は前記〔10〕に記載の積層体を硬化してなる硬化物、
〔12〕前記〔11〕に記載の硬化物の表面に導体層を形成してなる複合体、並びに
〔13〕前記〔11〕に記載の硬化物又は前記〔12〕に記載の複合体を構成材料として含む電子材料用基板、
が提供される。
本発明で用いられるビフェニル構造及び/又は縮合多環構造を有する多価エポキシ化合物(A)〔以下、多価エポキシ化合物(A)と略記することがある。〕は、1分子中に少なくとも2つのエポキシ基(オキシラン環)を有し、かつビフェニル構造及び縮合多環構造の少なくとも一方を有する化合物である。
また、前記縮合多環構造とは、2以上の単環が縮合(縮環)してなる構造をいう。縮合多環構造を構成する環は脂環であっても芳香環であってもよく、また、ヘテロ原子を含んだものであってもよい。縮合環数は特に限定されるものではないが、得られる電気絶縁層の耐熱性や機械的強度を高める観点から、2環以上であるのが好ましく、実用上、その上限としては10環程度である。このような縮合多環構造としては、例えば、ジシクロペンタジエン構造、ナフタレン構造、フルオレン構造、アントラセン構造、フェナントレン構造、トリフェニレン構造、ピレン構造、オバレン構造などが挙げられる。縮合多環構造は、上述したビフェニル構造と同様に、得られる硬化樹脂において、通常、当該樹脂の主鎖を構成するが、側鎖に存在していてもよい。
ビフェニル構造を有する多価エポキシ化合物(A)の市販品の例としては、ビフェニルアラルキル構造を有するノボラック型エポキシ化合物である、例えば、商品名「NC3000-FH、NC3000-H、NC3000、NC3000-L、NC3100」(以上、日本化薬社製);や、テトラメチルビフェニル構造を有するエポキシ化合物である、例えば、商品名「YX-4000」(以上、三菱化学社製);などが挙げられる。
また、縮合多環構造を有する多価エポキシ化合物(A)の市販品の例としては、ジシクロペンタジエン構造を有するノボラック型エポキシ化合物である、例えば、商品名「エピクロンHP7200L、エピクロンHP7200、エピクロンHP7200H、エピクロンHP7200HH、エピクロンHP7200HHH」(以上、DIC社製、「エピクロン」は登録商標)、商品名「Tactix556、Tactix756」(以上、ハンツマン・アドバンスト・マテリアル社製、「Tactix」は登録商標)、商品名「XD-1000-1L、XD-1000-2L」(以上、日本化薬社製)や;フルオレン構造を有するエポキシ化合物である、例えば、商品名「オンコートEX-1010、オンコートEX-1011、オンコートEX-1012、オンコートEX-1020、オンコートEX-1030、オンコートEX-1040、オンコートEX-1050、オンコートEX-1051」(以上、長瀬産業社製、「オンコート」は登録商標)、商品名「オグソールPG-100、オグソールEG-200、オグソールEG-250)」(以上、大阪ガスケミカル社製、「オグソール」は登録商標);などが挙げられる。
以上の多価エポキシ化合物(A)は、それぞれ単独で、又は2種以上を混合して用いることができる。
本発明で用いられる3価以上の多価フェノール型エポキシ化合物(B)〔以下、多価フェノール型エポキシ化合物(B)と略記することがある。〕は、3価以上の多価フェノールのエポキシ化合物であって、ビフェニル構造及び/又は縮合多環構造を有さないものであればよく、特に限定されないが、3価以上の多価ヒドロキシフェニルアルカン型エポキシ化合物が好ましい。ここで、3価以上の多価ヒドロキシフェニルアルカン型エポキシ化合物とは、3以上のヒドロキシフェニル基で置換された脂肪族炭化水素のヒドロキシル基をグリシジル化した構造を有する化合物である。
たとえば、トリスヒドロキシフェニルメタン型エポキシ化合物の市販品の例として、商品名「EPPN-503、EPPN-502H、EPPN-501H」(以上、日本化薬社製)、商品名「TACTIX-742」(以上、ダウ・ケミカル社製)、「jER 1032H60」(以上、三菱化学社製)等が挙げられる。また、テトラキスヒドロキシフェニルエタン型エポキシ化合物の市販品の例として、商品名「jER 1031S」(以上、三菱化学社製)等が挙げられる。
また、本発明の硬化性エポキシ組成物には、上述した多価エポキシ化合物(A)及び多価フェノール型エポキシ化合物(B)に加えて、所望により、それらのエポキシ化合物以外のその他のエポキシ化合物を適宜含有させてもよい。このようなその他のエポキシ化合物としては、例えば、リン含有エポキシ化合物を挙げることができる。リン含有エポキシ化合物としてはホスファフェナントレン構造を有するエポキシ化合物を好適に挙げることができ、このようなホスファフェナントレン構造を有するエポキシ化合物をさらに用いることにより、得られる電気絶縁層の耐熱性、電気特性及び導体層に対する密着性のさらなる向上や、デスミア性(デスミア処理による、スミアの除去のされ易さ)の改善が可能となる。
本発明で用いられるトリアジン構造含有フェノール樹脂(C)とは、フェノール、クレゾール及びナフトールなどの芳香族ヒドロキシ化合物と、メラミンやベンゾグアナミンなどのトリアジン環を有する化合物と、ホルムアルデヒドと、の縮合重合物である。トリアジン構造含有フェノール樹脂(C)は、典型的には、下記一般式(7)で表される構造を有する。
以上のトリアジン構造含有フェノール樹脂(C)は、それぞれ単独で、又は2種以上を混合して用いることができる。
また、本発明の硬化性エポキシ組成物は、上記各成分に加えて、活性エステル化合物(D)を含有していることが好ましい。活性エステル化合物(D)としては、活性エステル基を有するものであればよいが、本発明においては、分子内に少なくとも2つの活性エステル基を有する化合物が好ましい。活性エステル化合物(D)は、加熱によりエステル部位とエポキシ基が反応することで、上述したトリアジン構造含有フェノール樹脂(C)と同様に、本発明で用いられるエポキシ化合物の硬化剤として作用する。
本発明の硬化性エポキシ組成物には、本発明の効果の発現を阻害しない範囲で、適宜、上記各成分に加えて、以下に記載するような、その他の成分をさらに含有させてもよい。
本発明のフィルムは、上述した本発明の硬化性エポキシ組成物をシート状又はフィルム状に成形してなる成形体である。
本発明の積層フィルムは、上述した硬化性エポキシ組成物からなる接着層と、被めっき層用樹脂組成物からなる被めっき層と、を有するものである。
中でも、硬化剤としては、極性基を有する脂環式オレフィン重合体が有する極性基との反応性が緩やかであり、被めっき層用樹脂組成物の扱いが容易になることから、多価エポキシ化合物が好ましく、グリシジルエーテル型エポキシ化合物や脂環式の多価エポキシ化合物が特に好ましく用いられる。
本発明のプリプレグは、上述した本発明のフィルム又は本発明の積層フィルムに、繊維基材を含んでなるものである。
(2)硬化性エポキシ組成物又は被めっき層用樹脂組成物のいずれかを繊維基材に含浸して、所望により乾燥することでプリプレグを作製し、このプリプレグにもう一方の樹脂組成物を塗布、散布又は流延することにより、若しくはもう一方の支持体付き樹脂組成物フィルムを積層することにより製造する方法;(3)支持体上に硬化性エポキシ組成物又は被めっき層用樹脂組成物のいずれかを塗布、散布又は流延などにより積層し、その上に繊維基材を重ね、さらにその上からもう一方の樹脂組成物を塗布、散布又は流延することにより積層し、所望により乾燥させることで製造することができる。なお、いずれの方法も組成物には所望により有機溶剤を添加して、組成物の粘度を調整することにより、繊維基材への含浸や支持体への塗布、散布又は流延における作業性を制御することが好ましい。
本発明の積層体は、上述した本発明のフィルム、積層フィルム又はプリプレグを基材に積層してなるものである。本発明の積層体としては、少なくとも、上述した本発明のフィルム、積層フィルム又はプリプレグを積層してなるものであればよいが、表面に導体層を有する基板と、上述した本発明のフィルム、積層フィルム又はプリプレグからなる電気絶縁層とを積層してなるものが好ましい。
本発明の硬化物は、本発明の硬化性エポキシ組成物を硬化してなるものであり、当該組成物で構成される、本発明のフィルム、積層フィルム、プリプレグ、及び積層体を硬化してなるいずれのものも含まれる。硬化は、後述する硬化条件にて、本発明の硬化性エポキシ組成物やフィルム等を適宜加熱することで行うことができる。
本発明の複合体は、上述した、本発明の硬化物の表面に導体層を形成してなるものである。
電気絶縁層の表面平均粗度Raは、好ましくは0.05μm以上0.5μm未満、より好ましくは0.06μm以上0.3μm以下であり、かつ表面十点平均粗さRzjisは、好ましくは0.3μm以上5μm未満、より好ましくは0.5μm以上3μm以下である。なお、本明細書において、RaはJIS B0601-2001に示される算術平均粗さであり、表面十点平均粗さRzjisは、JIS B0601-2001付属書1に示される十点平均粗さである。
導体層の形成方法は、密着性に優れる導体層を形成できるという観点より、無電解めっき法により行なうのが好ましい。
本発明の電子材料用基板は、上述した本発明の硬化物又は複合体からなるものである。このような本発明の硬化物又は複合体からなる本発明の電子材料用基板は、携帯電話機、PHS、ノート型パソコン、PDA(携帯情報端末)、携帯テレビ電話機、パーソナルコンピューター、スーパーコンピューター、サーバー、ルーター、液晶プロジェクタ、エンジニアリング・ワークステーション(EWS)、ページャ、ワードプロセッサ、テレビ、ビューファインダ型又はモニタ直視型のビデオテープレコーダ、電子手帳、電子卓上計算機、カーナビゲーション装置、POS端末、タッチパネルを備えた装置などの各種電子機器に好適に用いることができる。
テトラヒドロフランを展開溶媒として、ゲル・パーミエーション・クロマトグラフィー(GPC)により測定し、ポリスチレン換算値として求めた。
水素添加前における重合体中の不飽和結合のモル数に対する水素添加された不飽和結合のモル数の比率を、400MHzの1H-NMRスペクトル測定により求め、これを水素添加率とした。
フィルム状硬化物から幅6mm、長さ15.4mm、厚さ40μmの小片を切り出し、支点間距離10mm、昇温速度10℃/分の条件で熱機械分析装置(TMA/SDTA840:メトラー・トレド社製)により測定して得た応力-温度曲線における変曲点に接線を引き、この接線の交点からフィルム状硬化物のガラス転移温度(Tg)を求め、以下の評価基準に従って、耐熱性を評価した。ガラス転移温度が高いほど耐熱性に優れる。
(評価基準)
A:ガラス転移温度が150℃以上
B:ガラス転移温度が145℃以上、150℃未満
C:ガラス転移温度が145℃未満
フィルム状硬化物から幅2.0mm、長さ80mm、厚さ40μmの小片を切り出し、空洞共振器摂動法誘電率測定装置を用いて10GHzにおける誘電正接の測定を行ない、以下の評価基準に従って、電気特性を評価した。
(評価基準)
A:誘電正接が0.0065未満
B:誘電正接が0.0065以上、0.070未満
C:誘電正接が0.0070以上
厚さ35μmの電解銅箔の表面をエッチング剤(商品名「CZ-8100」、メック社製)で約0.5μmエッチングした。得られた電解銅箔のエッチング処理面に、フィルム成形体の樹脂層側の面が接するように積層し、真空ラミネータにて、真空度1kPa以下、90℃、30秒間、圧力0.7MPaの条件で加熱圧着した。次に、フィルム成形体の前記樹脂層と反対側の面から支持体を剥がし、現れた樹脂層の表面に、前記エッチング剤で約2μmエッチングしたガラスエポキシ銅張積層板(FR-4)のエッチング処理面を重ね、真空ラミネータにて前記と同条件で加熱圧着した。そのようにして得られた複合成形体をオーブンにて180℃で90分間加熱することにより積層体硬化物を得た。得られた積層体硬化物からの銅箔の引きはがし強さをJIS C6481に準じて測定し、以下の評価基準に従って評価した。
(評価基準)
A:ピール強度が0.55kN/m以上
B:ピール強度が0.50kN/m以上、0.55kN/m未満
C:ピール強度が0.50kN/m未満
上記(5)と同様にして得られた積層体硬化物表面の銅箔を幅10mm残してそれ以外の部分の銅箔を剥離した試料を、温度130℃、湿度98%RHの恒温恒湿槽中で100時間放置した後、この積層体硬化物からの銅箔の引きはがし強さをJIS C6481に準じて測定し、以下の評価基準に従って評価した。
(評価基準)
A:ピール強度が0.30kN/m以上
B:ピール強度が0.25kN/m以上、0.30kN/m未満
C:ピール強度が0.25kN/m未満
(硬化性エポキシ組成物の調製)
ビフェニル構造を有する多価エポキシ化合物(A)としてのビフェニルジメチレン骨格ノボラック型エポキシ樹脂(商品名「NC-3000L」、日本化薬社製、エポキシ当量269)50部、3価以上の多価フェノール型エポキシ化合物(B)としてのテトラキスヒドロキシフェニルエタン型エポキシ化合物(商品名「jER 1031S」、三菱化学社製、エポキシ当量200、軟化点90℃)50部、トリアジン構造含有フェノール樹脂(C)としてのトリアジン構造含有クレゾ-ルノボラック樹脂(商品名「フェノライト LA-3018-50P」、不揮発分50%のプロピレングリコールモノメチルエーテル溶液、DIC社製、活性水酸基当量154)30部(トリアジン構造含有クレゾ-ルノボラック樹脂換算で15部)、活性エステル化合物(D)としての活性エステル化合物(商品名「エピクロン HPC-8000-65T」、不揮発分65%のトルエン溶液、DIC社製、活性エステル基当量223)115.3部(活性エステル化合物換算で75部)、充填剤としてのシリカ(商品名「SC2500-SXJ」、アドマテックス社製)350部、老化防止剤としてのヒンダードフェノール系酸化防止剤(商品名「イルガノックス(登録商標)3114」、BASF社製)1部、及びアニソール110部を混合し、遊星式攪拌機で3分間攪拌した。さらにこれに、硬化促進剤として1-べンジル-2-フェニルイミダゾールをアニソールに30%溶解した溶液8.3部(1-べンジル-2-フェニルイミダゾール換算で2.5部)を混合し、遊星式攪拌機で5分間攪拌して硬化性エポキシ組成物のワニスを得た。なお、ワニス中、充填剤の含有量は、固形分換算で64%であった。
次いで、上記にて得られた硬化性エポキシ組成物のワニスを、ダイコーターを用いて、縦300mm×横300mmの大きさで厚さが38μm、表面平均粗度Raが0.08μmのポリエチレンテレフタレートフィルム〔支持体:ルミラー(登録商標)T60 東レ社製〕上に塗工し、次いで、窒素雰囲気下、80℃で10分間乾燥し、支持体上に厚さ43μmの硬化性エポキシ組成物のフィルム成形体を得た。得られたフィルム成形体を用い、上記方法に従って、初期密着性及び高温高湿試験後の密着性を評価した。結果を表1に示す。
次いで、厚さ10μmの銅箔に、得られた硬化性エポキシ組成物のフィルム成形体から切り出した小片を、支持体が付いた状態で、硬化性エポキシ組成物が内側になるようにして、耐熱性ゴム製プレス板を上下に備えた真空ラミネータを用い、200Paに減圧して、温度110℃、圧力0.1MPaで60秒間加熱圧着積層し、その後、支持体を剥がして180℃で120分間空気中で加熱硬化した。硬化後、銅箔付き硬化樹脂を切り出し、銅箔を1mol/Lの過硫酸アンモニウム水溶液にて溶解し、フィルム状の硬化物を得た。得られたフィルム状硬化物を用いて、上記方法に従って、ガラス転移温度及び誘電正接の測定を行った。結果を表1に示す。
表1の実施例2~5及び比較例1~5における硬化性エポキシ組成物の組成に従って、配合を変更した以外は、実施例1と同様にして、硬化性エポキシ組成物のワニス、フィルム成形体及びフィルム状硬化物を得て、同様に測定、評価を行った。結果を表1に示す。
なお、表1において、「トリスヒドロキシフェニルメタン型エポキシ化合物」は、3価以上の多価フェノール型エポキシ化合物(B)としてのトリスヒドロキシフェニルメタン型エポキシ化合物(商品名「jER 1032H60」、三菱化学社製、エポキシ当量170、軟化点60℃)、「ホスファフェナントレン構造を有するフェノール系ノボラック型エポキシ化合物」は、ホスファフェナントレン構造を有するフェノール系ノボラック型エポキシ化合物(商品名「FX-289BEK75」、新日鉄住金化学社製、固形分75%のメチルエチルケトン溶液、リン含有量2%、エポキシ当量305)、「ビスフェノールA型エポキシ化合物」は、ビスフェノールA型エポキシ化合物(商品名「jER 828EL」、三菱化学社製、エポキシ当量186、液状)である。
さらに、トリアジン構造含有フェノール樹脂(C)を含有しない場合には、得られるフィルム状硬化物は、初期及び高温高湿試験後の密着性に劣る結果となり(比較例4)、3価以上の多価フェノール型エポキシ化合物(B)に代えて、ビスフェノールA型エポキシ化合物を用いた場合には、得られるフィルム状硬化物は、耐熱性、及び高温高湿試験後の密着性に劣る結果となった(比較例5)。
重合1段目として5-エチリデン-ビシクロ[2.2.1]ヘプト-2-エンを35モル部、1-ヘキセンを0.9モル部、アニソールを340モル部及びC1063を0.005モル部、窒素置換した耐圧ガラス反応器に仕込み、攪拌下に80℃で30分間の重合反応を行ってノルボルネン系開環重合体の溶液を得た。
次いで、重合2段目として重合1段目で得た溶液中にテトラシクロ[6.5.0.12,5.08,13]トリデカ-3,8,10,12-テトラエンを45モル部、ビシクロ[2.2.1]ヘプト-2-エン-5,6-ジカルボン酸無水物を20モル部、アニソールを250モル部及びルテニウム系重合触媒として4-アセトキシベンジリデン(ジクロロ)(4,5-ジブロモ-1,3-ジメシチル-4-イミダゾリン-2-イリデン)(トリシクロヘキシルホスフィン)ルテニウム(C1063、和光純薬社製)を0.01モル部追加し、攪拌下に80℃で1.5時間の重合反応を行ってノルボルネン系開環重合体の溶液を得た。この溶液について、ガスクロマトグラフィーを測定したところ、実質的に単量体が残留していないことが確認され、重合転化率は99%以上であった。
次いで、窒素置換した攪拌機付きオートクレーブに、得られた開環重合体の溶液を仕込み、C1063を0.03モル部を追加し、150℃、水素圧7MPaで、5時間攪拌させて水素添加反応を行って、ノルボルネン系開環重合体の水素添加物である脂環式オレフィン重合体(1)の溶液を得た。脂環式オレフィン重合体(1)の重量平均分子量は60,000、数平均分子量は30,000、分子量分布は2であった。また、水素添加率は95%であり、カルボン酸無水物基を有する繰り返し単位の含有率は20モル%であった。脂環式オレフィン重合体(1)の溶液の固形分濃度は22%であった。
(被めっき層用樹脂組成物)
合成例1にて得られた脂環式オレフィン重合体(1)の溶液454部〔脂環式オレフィン重合体(1)換算で100部〕、硬化剤としてのジシクロペンタジエン骨格を有する多価エポキシ化合物(商品名「エピクロン HP7200L」、DIC社製、「エピクロン」は登録商標)36部、無機充填剤としてのシリカ(商品名「アドマファイン SO-C1」、アドマテックス社製、平均粒子径0.25μm、「アドマファイン」は登録商標)24.5部、老化防止剤としてのトリス(3,5-ジ-t-ブチル-4-ヒドロキシベンジル)-イソシアヌレート(商品名「イルガノックス(登録商標)3114」、BASF社製)1部、紫外線吸収剤としての2-[2-ヒドロキシ-3,5-ビス(α,α-ジメチルベンジル)フェニル]-2H-ベンゾトリアゾール0.5部、及び硬化促進剤としての1-ベンジル-2-フェニルイミダゾール0.5部を、アニソールに混合して、配合剤濃度が16%になるように混合することで、被めっき層用樹脂組成物のワニスを得た。
上記にて得られた被めっき層用樹脂組成物のワニスを、厚さ38μmのポリエチレンテレフタレートフィルム(支持体)上にワイヤーバーを用いて塗布し、次いで、窒素雰囲気下、80℃で10分間乾燥させて、未硬化の被めっき層用樹脂組成物からなる、厚み3μmの被めっき層が形成された支持体付きフィルムを得た。
次いで、上記とは別に、ガラスフィラー及びハロゲン不含エポキシ化合物を含有するワニスをガラス繊維に含浸させて得られたコア材の表面に、厚みが18μmの銅が貼られた、厚み0.8mm、150mm角(縦150mm、横150mm)の両面銅張り基板表面に、配線幅及び配線間距離が50μm、厚みが18μmで、表面が有機酸との接触によってマイクロエッチング処理された導体層を形成して内層基板を得た。
得られた積層体硬化物を、膨潤液(「スウェリング ディップ セキュリガント P」、アトテック社製、「セキュリガント」は登録商標)500mL/L、水酸化ナトリウム3g/Lになるように調製した60℃の水溶液に15分間揺動浸漬した後、水洗した。
次いで、過マンガン酸塩の水溶液(「コンセントレート コンパクト CP」、アトテック社製)640mL/L、水酸化ナトリウム濃度40g/Lになるように調製した80℃の水溶液に15分間揺動浸漬をした後、水洗した。
続いて、硫酸ヒドロキシルアミン水溶液(「リダクション セキュリガント P 500」、アトテック社製、「セキュリガント」は登録商標)100mL/L、硫酸35mL/Lになるように調製した40℃の水溶液に、積層体硬化物を5分間浸漬し、中和還元処理をした後、水洗した。
次いで、クリーナー・コンディショナー水溶液(「アルカップ MCC-6-A」、上村工業社製、「アルカップ」は登録商標)を濃度50ml/Lとなるよう調整した50℃の水溶液に積層体硬化物を5分間浸漬し、クリーナー・コンディショナー処理を行った。次いで40℃の水洗水に積層体硬化物を1分間浸漬した後、水洗した。
次いで、硫酸濃度100g/L、過硫酸ナトリウム100g/Lとなるように調製した水溶液に積層体硬化物を2分間浸漬しソフトエッチング処理を行った後、水洗した。
次いで、硫酸濃度100g/Lなるよう調製した水溶液に積層体硬化物を1分間浸漬し酸洗処理を行った後、水洗した。
次いで、アルカップ アクチベータ MAT-1-A(商品名、上村工業社製、「アルカップ」は登録商標)が200mL/L、アルカップ アクチベータ MAT-1-B(商品名、上村工業社製、「アルカップ」は登録商標)が30mL/L、水酸化ナトリウムが0.35g/Lになるように調製した60℃のPd塩含有めっき触媒水溶液に積層体硬化物を5分間浸漬した後、水洗した。
続いて、アルカップ レデユーサ- MAB-4-A(商品名、上村工業社製、「アルカップ」は登録商標)が20mL/L、アルカップ レデユーサ- MAB-4-B(商品名、上村工業社製、「アルカップ」は登録商標)が200mL/Lになるように調整した水溶液に積層体硬化物を35℃で、3分間浸漬し、めっき触媒を還元処理した後、水洗した。
次いで、アルカップ アクセレレータ MEL-3-A(商品名、上村工業社製、「アルカップ」は登録商標)が50mL/Lになるように調製した水溶液に積層体硬化物を25℃で、1分間浸漬した。
このようにして得られた積層体硬化物を、スルカップ PEA-6-A(商品名、上村工業社製、「スルカップ」は登録商標)100mL/L、スルカップ PEA-6-B-2X(商品名、上村工業社製)50mL/L、スルカップ PEA-6-C(商品名、上村工業社製)14mL/L、スルカップ PEA-6-D(商品名、上村工業社製)15mL/L、スルカップ PEA-6-E(商品名、上村工業社製)50mL/L、37%ホルマリン水溶液5mL/Lとなるように調製した無電解銅めっき液に空気を吹き込みながら、温度36℃で、20分間浸漬して無電解銅めっき処理して積層体硬化物表面(被めっき層用樹脂組成物からなる被めっき層の表面)に無電解めっき膜を形成した。
Claims (13)
- ビフェニル構造及び/又は縮合多環構造を有する多価エポキシ化合物(A)と、3価以上の多価フェノール型エポキシ化合物(B)と、トリアジン構造含有フェノール樹脂(C)と、を含有してなる硬化性エポキシ組成物。
- 前記多価エポキシ化合物(A)と、前記3価以上の多価フェノール型エポキシ化合物(B)との含有割合が、「多価エポキシ化合物(A):3価以上の多価フェノール型エポキシ化合物(B)」の重量比で、20:80~95:5である請求項1~3のいずれかに記載の硬化性エポキシ組成物。
- 前記トリアジン構造含有フェノール樹脂(C)の含有割合が、硬化性エポキシ組成物中に含有されるエポキシ化合物の合計100重量部に対して、1~60重量部である請求項1~4のいずれかに記載の硬化性エポキシ組成物。
- 活性エステル化合物(D)をさらに含有する請求項1~5のいずれかに記載の硬化性エポキシ組成物。
- 請求項1~6のいずれかに記載の硬化性エポキシ組成物からなるフィルム。
- 請求項1~6のいずれかに記載の硬化性エポキシ組成物からなる接着層と、被めっき層用樹脂組成物からなる被めっき層と、を有する積層フィルム。
- 請求項7に記載のフィルム又は請求項8に記載の積層フィルムと、繊維基材と、からなるプリプレグ。
- 請求項7に記載のフィルム、請求項8に記載の積層フィルム又は請求項9に記載のプリプレグを、基材に積層してなる積層体。
- 請求項1,2,3,4,5若しくは6に記載の硬化性エポキシ組成物、請求項7に記載のフィルム、請求項8に記載の積層フィルム、請求項9に記載のプリプレグ、又は請求項10に記載の積層体を硬化してなる硬化物。
- 請求項11に記載の硬化物の表面に導体層を形成してなる複合体。
- 請求項11に記載の硬化物又は請求項12に記載の複合体を構成材料として含む電子材料用基板。
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JP2024091762A (ja) * | 2018-12-12 | 2024-07-05 | 株式会社レゾナック | トランスファ成形封止用樹脂組成物及び半導体装置 |
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JP2007021763A (ja) * | 2005-07-12 | 2007-02-01 | Hitachi Chem Co Ltd | 接着層付き金属箔及び金属張積層板 |
JP2010254819A (ja) * | 2009-04-24 | 2010-11-11 | Panasonic Electric Works Co Ltd | エポキシ樹脂組成物、プリプレグ、積層板、および多層板 |
WO2013027732A1 (ja) * | 2011-08-23 | 2013-02-28 | 日本ゼオン株式会社 | 硬化性樹脂組成物、フィルム、プリプレグ、積層体、硬化物、及び複合体 |
-
2014
- 2014-10-27 JP JP2016555949A patent/JP6436173B2/ja active Active
- 2014-10-27 US US15/520,513 patent/US20170313043A1/en not_active Abandoned
- 2014-10-27 WO PCT/JP2014/078463 patent/WO2016067330A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007021763A (ja) * | 2005-07-12 | 2007-02-01 | Hitachi Chem Co Ltd | 接着層付き金属箔及び金属張積層板 |
JP2010254819A (ja) * | 2009-04-24 | 2010-11-11 | Panasonic Electric Works Co Ltd | エポキシ樹脂組成物、プリプレグ、積層板、および多層板 |
WO2013027732A1 (ja) * | 2011-08-23 | 2013-02-28 | 日本ゼオン株式会社 | 硬化性樹脂組成物、フィルム、プリプレグ、積層体、硬化物、及び複合体 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089178A (ja) * | 2014-11-06 | 2016-05-23 | 江蘇雅克科技股▲ふん▼有限公司 | リン含有官能化ポリ(アリーレンエーテル)及びそれを原料として調製された組成物 |
JP2024091762A (ja) * | 2018-12-12 | 2024-07-05 | 株式会社レゾナック | トランスファ成形封止用樹脂組成物及び半導体装置 |
JPWO2021044963A1 (ja) * | 2019-09-03 | 2021-03-11 |
Also Published As
Publication number | Publication date |
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JPWO2016067330A1 (ja) | 2017-08-10 |
US20170313043A1 (en) | 2017-11-02 |
JP6436173B2 (ja) | 2018-12-12 |
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