WO2022210227A1 - 樹脂組成物、プリプレグ、樹脂付きフィルム、樹脂付き金属箔、金属張積層板、及び配線板 - Google Patents
樹脂組成物、プリプレグ、樹脂付きフィルム、樹脂付き金属箔、金属張積層板、及び配線板 Download PDFInfo
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- WO2022210227A1 WO2022210227A1 PCT/JP2022/013786 JP2022013786W WO2022210227A1 WO 2022210227 A1 WO2022210227 A1 WO 2022210227A1 JP 2022013786 W JP2022013786 W JP 2022013786W WO 2022210227 A1 WO2022210227 A1 WO 2022210227A1
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- resin composition
- resin
- compound
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- acid anhydride
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- MZYHMUONCNKCHE-UHFFFAOYSA-N naphthalene-1,2,3,4-tetracarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=C(C(O)=O)C(C(O)=O)=C21 MZYHMUONCNKCHE-UHFFFAOYSA-N 0.000 description 1
- KVQQRFDIKYXJTJ-UHFFFAOYSA-N naphthalene-1,2,3-tricarboxylic acid Chemical compound C1=CC=C2C(C(O)=O)=C(C(O)=O)C(C(=O)O)=CC2=C1 KVQQRFDIKYXJTJ-UHFFFAOYSA-N 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 125000002801 octanoyl group Chemical group C(CCCCCCC)(=O)* 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical group C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 1
- RPGWZZNNEUHDAQ-UHFFFAOYSA-N phenylphosphine Chemical compound PC1=CC=CC=C1 RPGWZZNNEUHDAQ-UHFFFAOYSA-N 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- USFPINLPPFWTJW-UHFFFAOYSA-N tetraphenylphosphonium Chemical compound C1=CC=CC=C1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 USFPINLPPFWTJW-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical compound CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/062—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F232/00—Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
- C08F232/02—Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/08—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to polyphenylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/14—Esterification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/244—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/36—Amides or imides
- C08F222/40—Imides, e.g. cyclic imides
-
- 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
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to a resin composition, a prepreg, a resin-coated film, a resin-coated metal foil, a metal-clad laminate, and a wiring board.
- wiring boards used in various electronic devices are required to be high-frequency compatible wiring boards, such as millimeter-wave radar boards for in-vehicle applications.
- Substrate materials for composing insulating layers of wiring boards used in various electronic devices are required to have a low dielectric constant and dielectric loss tangent in order to increase the signal transmission speed and reduce loss during signal transmission. .
- Polyphenylene ether is excellent in low dielectric properties such as low dielectric constant and low dielectric loss tangent. are known to be excellent. For this reason, polyphenylene ether is being studied for use as, for example, a molding material for high frequencies. More specifically, it is preferably used as a substrate material or the like for constituting an insulating layer of a wiring board provided in an electronic device using a high frequency band.
- Substrate materials containing polyphenylene ether include, for example, the resin composition described in Patent Document 1, and the like.
- Patent Document 1 describes a curable resin composition comprising a reaction product of a polyphenylene ether and an unsaturated carboxylic acid or an acid anhydride, triallyl cyanurate, and a brominated aromatic compound containing at least one imide ring. It is according to Patent Document 1, it is disclosed that a polyphenylene ether-based resin composition that retains the excellent dielectric properties of polyphenylene ether and exhibits excellent flame retardancy, chemical resistance, and heat resistance after curing can be obtained. ing.
- the insulation layers of wiring boards used in various electronic devices are also required to be able to appropriately remove the debris (smear) generated by drilling or laser drilling.
- the insulating layer of the wiring board is required to appropriately remove smear (excellent desmear property) while suppressing damage to the insulating layer of the wiring board by permanganic acid or the like. For this reason, it is required that a cured product having excellent desmear property can be obtained as a substrate material for forming an insulating layer of a wiring board.
- Wiring boards used in various electronic devices are also required to be less susceptible to changes in the external environment. For example, excellent heat resistance is required so that the wiring board can be used even in environments with relatively high temperatures. For this reason, it is required that a cured product having excellent heat resistance can be obtained as a substrate material for forming an insulating layer of a wiring board. In addition, in order to obtain a wiring board having excellent reliability in a wide temperature range, it is required that a cured product having a high glass transition temperature can be obtained as a substrate material for constituting an insulating layer of the wiring board.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a resin composition which is excellent in low dielectric properties, heat resistance, and desmear resistance, and which gives a cured product having a high glass transition temperature. .
- Another object of the present invention is to provide a prepreg, a resin-coated film, a resin-coated metal foil, a metal-clad laminate, and a wiring board obtained using the resin composition.
- One aspect of the present invention is a preliminary reactant (A) obtained by reacting in advance a polyphenylene ether compound (a1) having a hydroxyl group in the molecule and an acid anhydride (a2) having an acid anhydride group in the molecule, A curable resin (B) containing a reactive compound having an unsaturated double bond in the molecule, wherein the equivalent ratio of the acid anhydride group of the acid anhydride (a2) to the hydroxyl group of the polyphenylene ether compound (a1) is 1.5 or less, and the content of the curable resin (B) is 20 to 85 parts by mass with respect to a total of 100 parts by mass of the preliminary reaction product (A) and the curable resin (B). It is a resin composition.
- FIG. 1 is a schematic cross-sectional view showing an example of a prepreg according to an embodiment of the invention.
- FIG. 2 is a schematic cross-sectional view showing an example of a metal-clad laminate according to an embodiment of the invention.
- FIG. 3 is a schematic cross-sectional view showing an example of a wiring board according to an embodiment of the invention.
- FIG. 4 is a schematic cross-sectional view showing an example of a resin-coated metal foil according to an embodiment of the invention.
- FIG. 5 is a schematic cross-sectional view showing an example of a resin-coated film according to an embodiment of the invention.
- a resin composition according to one embodiment of the present invention is a preliminary reaction in which a polyphenylene ether compound (a1) having a hydroxyl group in the molecule and an acid anhydride (a2) having an acid anhydride group in the molecule are reacted in advance. and a curable resin (B) containing a reactive compound having an unsaturated double bond in its molecule.
- the equivalent ratio of the acid anhydride group of the acid anhydride (a2) to the hydroxyl group of the polyphenylene ether compound (a1) (acid anhydride group of the acid anhydride (a2)/hydroxyl group of the polyphenylene ether compound (a1)) is 1.5 or less.
- the amount of hydroxyl groups in the polyphenylene ether compound (a1) is 1 equivalent
- the amount of acid anhydride groups in the acid anhydride (a2) is 1.5 equivalents or less.
- the content of the curable resin (B) is 20 to 85 parts by mass with respect to a total of 100 parts by mass of the pre-reactant (A) and the curable resin (B).
- the resin composition is preferably obtained by curing a preliminary reaction product (A) obtained by reacting the polyphenylene ether compound (a1) and the acid anhydride (a2) in advance together with the curable resin (B). It can be cured, and a cured product having a high glass transition temperature and excellent heat resistance can be obtained while maintaining the excellent low dielectric properties of the polyphenylene ether chain in the polyphenylene ether compound (a1).
- the resin composition contains the acid anhydride (a2), it is considered that the obtained cured product is easily desmeared.
- the resin composition containing the acid anhydride (a2) increases the glass transition temperature of the obtained cured product.
- the acid anhydride (a2) is less likely to volatilize and is retained in the resin composition. It is thought that it will become easier. For this reason, it is considered that the action of the acid anhydride (a2), for example, the action of facilitating desmearing of the cured product and increasing the glass transition temperature of the cured product, can be exhibited favorably. Furthermore, the polyphenylene ether compound (a1) and the acid anhydride (a2) are adjusted so that the equivalent ratio of the acid anhydride group of the acid anhydride (a2) to the hydroxyl group of the polyphenylene ether compound (a1) is within the above range. ).
- the pre-reactant (A) and the curable resin (B) are contained so that the content of the curable resin (B) is within the above range.
- the polyphenylene ether compound (a1) and the acid anhydride (a2) as described above, and further containing the pre-reactant (A) and the curable resin (B) as described above.
- the susceptibility to desmearing and the like can be suitably adjusted while maintaining excellent low dielectric properties. From these facts, it is considered that the resin composition is excellent in low dielectric properties, heat resistance and desmear property, and gives a cured product with a high glass transition temperature.
- the preliminary reaction product (A) is a preliminary reaction product obtained by pre-reacting a polyphenylene ether compound (a1) having a hydroxyl group in the molecule and an acid anhydride (a2) having an acid anhydride group in the molecule. , is not particularly limited.
- the pre-reactant (A) is capable of reacting with the curable resin (B).
- the resin composition is cured by reacting the pre-reactant (A) and the curable resin (B).
- the resin composition may contain, as the preliminary reaction product (A), a reaction product obtained by reacting the polyphenylene ether compound (a1) and the acid anhydride (a2).
- the resin composition may contain the reactant as the preliminary reactant (A), and may further contain the polyphenylene ether compound (a1) and the acid anhydride (a2).
- the polyphenylene ether compound (a1) is not particularly limited as long as it is a polyphenylene ether compound having a hydroxyl group in its molecule.
- the polyphenylene ether compound (a1) has a polyphenylene ether chain in the molecule, and preferably has, for example, a repeating unit represented by the following formula (1) in the molecule.
- t represents 1-50.
- R 1 to R 4 are each independent. That is, R 1 to R 4 may each be the same group or different groups.
- R 1 to R 4 each represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a formyl group, an alkylcarbonyl group, an alkenylcarbonyl group, or an alkynylcarbonyl group. Among these, a hydrogen atom and an alkyl group are preferred.
- R 1 to R 4 Specific examples of the functional groups mentioned for R 1 to R 4 include the following.
- alkyl group is not particularly limited, for example, an alkyl group having 1 to 18 carbon atoms is preferable, and an alkyl group having 1 to 10 carbon atoms is more preferable. Specific examples include methyl group, ethyl group, propyl group, hexyl group, and decyl group.
- alkenyl group is not particularly limited, for example, an alkenyl group having 2 to 18 carbon atoms is preferable, and an alkenyl group having 2 to 10 carbon atoms is more preferable.
- Specific examples include vinyl groups, allyl groups, and 3-butenyl groups.
- alkynyl group is not particularly limited, for example, an alkynyl group having 2 to 18 carbon atoms is preferable, and an alkynyl group having 2 to 10 carbon atoms is more preferable. Specific examples include an ethynyl group and a prop-2-yn-1-yl group (propargyl group).
- the alkylcarbonyl group is not particularly limited as long as it is a carbonyl group substituted with an alkyl group.
- an alkylcarbonyl group having 2 to 18 carbon atoms is preferable, and an alkylcarbonyl group having 2 to 10 carbon atoms is more preferable.
- Specific examples include acetyl group, propionyl group, butyryl group, isobutyryl group, pivaloyl group, hexanoyl group, octanoyl group, cyclohexylcarbonyl group and the like.
- the alkenylcarbonyl group is not particularly limited as long as it is a carbonyl group substituted with an alkenyl group.
- an alkenylcarbonyl group having 3 to 18 carbon atoms is preferable, and an alkenylcarbonyl group having 3 to 10 carbon atoms is more preferable.
- Specific examples include an acryloyl group, a methacryloyl group, and a crotonoyl group.
- the alkynylcarbonyl group is not particularly limited as long as it is a carbonyl group substituted with an alkynyl group.
- an alkynylcarbonyl group having 3 to 18 carbon atoms is preferable, and an alkynylcarbonyl group having 3 to 10 carbon atoms is more preferable.
- Specific examples thereof include a propioloyl group and the like.
- the weight average molecular weight (Mw) and number average molecular weight (Mn) of the polyphenylene ether compound (a1) are not particularly limited, for example, preferably 500 to 5000, preferably 800 to 4000, 1000 to 3000 is preferred. If the molecular weight is too low, there is a tendency that a cured product with sufficient heat resistance cannot be obtained. On the other hand, if the molecular weight is too high, the melt viscosity of the resin composition becomes high, sufficient fluidity cannot be obtained, and there is a tendency that molding defects cannot be sufficiently suppressed. Therefore, if the weight average molecular weight of the polyphenylene ether compound is within the above range, excellent heat resistance and moldability of the cured product can be achieved.
- the weight average molecular weight and number average molecular weight may be those measured by a general molecular weight measurement method, and specifically, for example, a value measured using gel permeation chromatography (GPC). mentioned.
- GPC gel permeation chromatography
- t is the weight average molecular weight and number average molecular weight of the polyphenylene ether compound within the above ranges. It is preferable that it is a numerical value such as Specifically, t is preferably 1-50.
- the average number of hydroxyl groups (number of hydroxyl groups) in the polyphenylene ether compound (a1) is not particularly limited, it is preferably 1 to 5, more preferably 1.5 to 3. If the number of hydroxyl groups is too small, it becomes difficult to react with the acid anhydride (a2), and the curable resin (B) of the pre-reacted product obtained by reacting with the acid anhydride (a2) The reactivity with is lowered, and it tends to be difficult to obtain a cured product having sufficient heat resistance.
- the reactivity with the acid anhydride (a2) becomes too high, and the pre-reacted product (A) obtained by reacting with the acid anhydride (a2)
- the reactivity with the curable resin (B) may become too high, and, for example, the storage stability of the resin composition may deteriorate.
- the number of hydroxyl groups of the polyphenylene ether compound can be found, for example, from the standard value of the polyphenylene ether compound product used. Further, the number of hydroxyl groups here specifically includes, for example, a numerical value representing the average value of hydroxyl groups per molecule of all polyphenylene ether compounds present in 1 mol of the polyphenylene ether compound.
- the intrinsic viscosity of the polyphenylene ether compound (a1) is not particularly limited, for example, it is preferably 0.03 to 0.12 dl/g, more preferably 0.04 to 0.11 dl/g, More preferably 0.06 to 0.095 dl/g. If the intrinsic viscosity is too low, the molecular weight tends to be low, and it tends to be difficult to obtain a cured product with sufficient heat resistance. On the other hand, if the intrinsic viscosity is too high, the viscosity tends to be high, sufficient fluidity cannot be obtained, and molding defects cannot be suppressed. Therefore, when the intrinsic viscosity of the polyphenylene ether compound (a1) is within the above range, excellent heat resistance and moldability of the cured product can be achieved.
- the intrinsic viscosity here can be found from the product standard value of the polyphenylene ether compound (a1) used.
- the intrinsic viscosity here is the intrinsic viscosity measured in methylene chloride at 25 ° C. More specifically, for example, a 0.18 g / 45 ml methylene chloride solution (liquid temperature 25 ° C.) , etc. Examples of this viscometer include AVS500 Visco System manufactured by Schott.
- the polyphenylene ether compound (a1) is not particularly limited. 1,4-phenylene oxide) and the like containing polyphenylene ether as a main component. More specific examples of the polyphenylene ether compound (a1) include polyphenylene ether compounds represented by the following formula (2) and polyphenylene ether compounds represented by the following formula (3).
- R 5 to R 20 and R 21 to R 36 are each independent. That is, R 5 to R 20 and R 21 to R 36 may each be the same group or different groups.
- R 5 to R 20 and R 21 to R 36 are the same as R 1 to R 4 in formula (1) above. That is, R 5 to R 20 and R 21 to R 36 each represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a formyl group, an alkylcarbonyl group, an alkenylcarbonyl group, or an alkynylcarbonyl group.
- Y represents a linear, branched or cyclic hydrocarbon having 20 or less carbon atoms.
- m and n each represent 0-20. Further, m and n preferably represent numerical values in which the total value of m and n is 1-30. Therefore, m represents 0 to 20, n represents 0 to 20, and more preferably the sum of m and n represents 1 to 30.
- Y is a linear, branched or cyclic hydrocarbon having 20 or less carbon atoms, as described above.
- Examples of Y include groups represented by the following formula (4).
- R 37 and R 38 each independently represent a hydrogen atom or an alkyl group.
- the alkyl group include a methyl group.
- the group represented by formula (4) include a methylene group, a methylmethylene group, a dimethylmethylene group, and the like, and among these, a dimethylmethylene group is preferred.
- polyphenylene ether compound represented by the formula (2) include polyphenylene ether compounds represented by the following formula (5).
- polyphenylene ether compound represented by the formula (3) include polyphenylene ether compounds represented by the following formula (6).
- m and n are the same as m and n in the above formulas (2) and (3), specifically, m and n are respectively It is preferable to indicate 0-20.
- Y is the same as Y in the above formula (3).
- the acid anhydride (a2) is not particularly limited as long as it is an acid anhydride having an acid anhydride group in its molecule.
- the acid anhydride group may have a structure obtained by dehydration condensation of carboxylic acids in different molecules, or may have a structure obtained by dehydration condensation of two carboxylic acids in the molecule.
- the acid anhydride (a2) may be an acid anhydride (monofunctional acid anhydride) having one acid anhydride group in the molecule, or the acid anhydride group in the molecule An acid anhydride having two or more (polyfunctional acid anhydride) may be used.
- the acid anhydride (a2) preferably contains an acid anhydride having one or more cyclic acid anhydride groups in the molecule.
- the number of carbon atoms in the acid anhydride (a2) is not particularly limited, but is preferably 6 or more, more preferably 8 or more, and preferably 25 or less, and more preferably 18 or less.
- the acid anhydride (a2) is not particularly limited, but includes the monofunctional acid anhydride and the polyfunctional acid anhydride as described above.
- Examples of the monofunctional acid anhydride include, but are not limited to, maleic anhydride, phthalic anhydride, succinic anhydride, trimellitic anhydride, a compound represented by the following formula (7), methylbicyclo [2. 2.1]heptane-2,3-dicarboxylic anhydride, bicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride, nadic anhydride, methylnadic anhydride, hexahydrophthalic anhydride acids such as methylhexahydrophthalic anhydride, 1,2,3,6-tetrahydrophthalic anhydride, tetrapropenylsuccinic anhydride (3-dodecenylsuccinic anhydride), and octenylsuccinic anhydride.
- RA represents a hydrogen atom or an alkyl group.
- the alkyl group is preferably an alkyl group having 1 to 12 carbon atoms, more preferably a methyl group.
- RA is a hydrogen atom. That is, RA is preferably a hydrogen atom or a methyl group.
- the compound represented by the above formula (7) in which RA is a methyl group is 4-methylhexahydrophthalic anhydride.
- the compound represented by the above formula (7) in which RA is a hydrogen atom is hexahydrophthalic anhydride.
- polyfunctional acid anhydride examples include, but are not limited to, 1,2,3,4-butanetetracarboxylic dianhydride, ethylene glycol bisanhydrotrimellitate, and glycerin bisanhydrotrimellitate monoacetate. , 1,3,3a,4,5,9b-hexahydro-5(tetrahydro-2,5-dioxo-3-furanyl)naphtho[1,2-C]furan-1,3-dione, pyromellitic anhydride , and benzophenonetetracarboxylic anhydride.
- a commercially available product can be used as the acid anhydride.
- succinic anhydride for example, Rikashid SA manufactured by Shin Nippon Chemical Co., Ltd. can be used.
- 4-methylhexahydrophthalic anhydride for example, Rikacid MH manufactured by Shin Nippon Chemical Co., Ltd. can be used.
- hexahydrophthalic anhydride for example, Rikashid HH manufactured by Shin Nippon Rika Co., Ltd. can be used.
- 1,2,3,6-tetrahydrophthalic anhydride for example, Rikacid TH manufactured by Shin Nippon Rika Co., Ltd. can be used.
- tetrapropenyl succinic anhydride for example, Rikashid DDSA manufactured by Shin Nippon Rika Co., Ltd.
- Rikashid DDSA manufactured by Shin Nippon Rika Co., Ltd.
- octenyl succinic anhydride for example, Rikacid OSA manufactured by Shin Nippon Chemical Co., Ltd.
- a mixture of methylbicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride and bicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride for example, Shin Nihon Rikashid HNA-100 manufactured by Rika Co., Ltd. can be used.
- Rikacid MH-700 manufactured by Shin Nippon Rika Co., Ltd.
- 1,2,3,4-butanetetracarboxylic dianhydride for example, Rikashid BT-100 manufactured by Shin Nippon Chemical Co., Ltd.
- ethylene glycol bisanhydro trimellitate for example, Rikashid TMEG-100, Rikashid TMEG-500, Rikashid TMEG-600, and Rikashid TMEG-S manufactured by Shin Nippon Rika Co., Ltd. can be used.
- glycerin bis-anhydrotrimellitate monoacetate for example, Rikacid TMTA-C manufactured by Shin Nippon Rika Co., Ltd. can be used.
- Rikacid TMTA-C manufactured by Shin Nippon Rika Co., Ltd.
- 1,3,3a,4,5,9b-hexahydro-5(tetrahydro-2,5-dioxo-3-furanyl)naphtho[1,2-C]furan-1,3-dione include Rikashid TDA-100 manufactured by Shin Nippon Chemical Co., Ltd. can be used.
- the acid anhydride (a2) may be used alone or in combination of two or more.
- a catalyst may be used in the reaction.
- the catalyst is not particularly limited as long as it contributes to the progress of the reaction between the polyethylene ether compound (a1) and the acid anhydride (a2).
- the catalyst is not particularly limited as long as it contributes to the progress of the reaction between the polyethylene ether compound (a1) and the acid anhydride (a2).
- the resin composition contains, as the preliminary reaction product (A), a reaction product obtained by reacting the polyphenylene ether compound (a1) and the acid anhydride (a2).
- the hydroxyl group of the polyphenylene ether compound (a1) acts on the acid anhydride group of the acid anhydride (a2), and the acid anhydride group is ring-opened to form an ester bond. That is, the reactant has an ester bond in its molecule.
- a carboxyl group is generated by ring-opening of the acid anhydride group.
- the pre-reactant (A) preferably contains an ester/carboxyl-modified polyphenylene ether compound terminally modified with one or more substituents having an ester bond and a carboxyl group.
- the reactant is not particularly limited as long as it is a reactant obtained by reacting the polyphenylene ether compound (a1) and the acid anhydride (a2).
- the polyphenylene ether compound (a1) , as the acid anhydride (a2), a compound obtained by reacting the compound represented by the formula (7), and to the polyphenylene ether compound (a1), as the acid anhydride (a2), octenyl examples thereof include compounds obtained by reacting succinic anhydride.
- the compound obtained by reacting the polyphenylene ether compound (a1) with the compound represented by the formula (7) as the acid anhydride (a2) has the structure of the polyphenylene ether compound (a1)
- a compound represented by the following formula (8) may be used, although it varies depending on factors such as the following.
- RA includes the same as R in formula (7), and specifically represents a hydrogen atom or an alkyl group.
- m and n are the same as m and n in formulas (2) and (3) above, and specifically, m and n preferably represent 0 to 20, respectively.
- the equivalent ratio of the acid anhydride group of the acid anhydride (a2) to the hydroxyl group of the polyphenylene ether compound (a1) is , 1.5 or less, preferably 0.3 to 1.5, more preferably 0.8 to 1. That is, when the amount of hydroxyl groups in the polyphenylene ether compound (a1) is 1 equivalent, the amount of acid anhydride groups in the acid anhydride (a2) is 1.5 equivalents or less, and 0.3 to 1.5 equivalents. It is preferably 5 equivalents, more preferably 0.8 to 1 equivalent.
- the polyphenylene ether compound (a1) is too much, the polyphenylene ether compound (a1) will remain too much, and if the acid anhydride (a2) is too much, the acid anhydride (a2) will remain. If the temperature is too high, it tends to be difficult to obtain a suitable pre-reactant. Therefore, by blending the polyphenylene ether compound (a1) and the acid anhydride (a2) so that the equivalent ratio range is within the above range, a suitable pre-reactant is obtained, and a resin composition having excellent performance and A cured product thereof can be obtained.
- the equivalent weight is a relative value based on the reactive functional group, and the hydroxyl equivalent weight of the polyphenylene ether compound can also be defined as the phenol equivalent weight.
- the conditions for the reaction are not particularly limited as long as the reaction proceeds.
- As the conditions for the reaction for example, conditions under which the acid anhydride (a2) has a ring-opening rate of 80 to 100% are preferable.
- the acid anhydride (a2) is ring-opened by reaction with the polyphenylene ether compound (a1) as described above. Therefore, the degree of progress of the reaction can be confirmed by the ring-opening ratio of the acid anhydride (a2).
- the acid anhydride (a2) preferably has a ring-opening ratio of 80 to 100% as described above.
- the amount of the acid anhydride (a2) remaining in the preliminary reaction product (A) is reduced, and the adverse effects of the acid anhydride (a2) can be reduced.
- the ring-opening ratio of the acid anhydride (a2) is too low, a large amount of the acid anhydride (a2) remains unreacted, and the acid anhydride (a2) tends to volatilize and disappear during the production of the prepreg. .
- the curing component becomes insufficient, and the degree of cross-linking of the cured product of the resin composition is considered to decrease, and the glass transition temperature of the cured product tends to decrease.
- the ring-opening rate of the acid anhydride (a2) can be calculated, for example, by comparing the infrared absorption spectra of the mixture before and after the reaction.
- the mixture may have a peak due to a cyclic acid anhydride group around 1800 to 1900 cm ⁇ 1 before and after the reaction (pre-reaction).
- the mixture may have a peak due to benzene rings around 1450-1580 cm ⁇ 1 that do not participate in the reaction. Then, using the peak due to the benzene ring as an internal standard, the amount (relative value) of the peak due to the acid anhydride group is determined before and after the reaction. Peak amounts are determined by area ratios using an internal standard.
- the area of the peak due to the acid anhydride group before the reaction (A 1 ), the area of the peak due to the acid anhydride group after the reaction (A 2 ), the area of the peak due to the benzene ring before the reaction ( B 1 ) and the area of the peak attributed to the benzene ring after the reaction (B 2 ) are used.
- the area ratio (A 1 /B 1 ) is the amount of acid anhydride groups before reaction
- the area ratio (A 2 /B 2 ) is the amount of acid anhydride groups after reaction.
- Ring-opening rate (%) ⁇ 1-(A 2 /B 2 )/(A 1 /B 1 ) ⁇ ⁇ 100
- the ring-opening rate of the acid anhydride (a2) changes depending on the heating temperature and heating time during preparation of the varnish, so the heating conditions can be appropriately adjusted so that the ring-opening rate is 80% or more.
- the conditions for this preliminary reaction can be appropriately set by sampling the reaction product over time while performing the preliminary reaction and confirming the ring-opening rate.
- the conditions for the reaction include the conditions described above, and more specifically, the reaction temperature is preferably 30 to 100°C, more preferably 60 to 80°C. If the reaction temperature is too low, the reaction tends to proceed with difficulty. Also, if the reaction temperature is too high, the acid anhydride (a2) may volatilize before the acid anhydride (a2) reacts with the polyphenylene ether compound (a1). Therefore, when the reaction temperature is within the above range, the polyphenylene ether compound (a1) and the acid anhydride (a2) can be appropriately reacted.
- the reaction time is preferably 2 to 10 hours, more preferably 3 to 6 hours. When the reaction time is within the above range, the polyphenylene ether compound (a1) and the acid anhydride (a2) can be appropriately reacted.
- the curable resin (B) is not particularly limited as long as it is a curable resin (B) containing a reactive compound having an unsaturated double bond in its molecule.
- the reactive compound is not particularly limited as long as it is a reactive compound having an unsaturated double bond in its molecule.
- the reactive compound include maleimide compounds (B1), and reactive compounds (B2) other than the maleimide compounds (B1). That is, the curable resin (B) may contain only the maleimide compound (B1), may contain only the reactive compound (B2) other than the maleimide compound (B1), or may contain only the maleimide compound (B1). Both the compound (B1) and the reactive compound (B2) may be included.
- the curable resin (B) preferably contains both the maleimide compound (B1) and the reactive compound (B2).
- the content of the maleimide compound (B1) is 10 to 70 parts by mass with respect to a total of 100 parts by mass of the pre-reactant (A) and the curable resin (B).
- the content of the reactive compound (B2) is preferably 10 to 70 parts by mass with respect to a total of 100 parts by mass of the preliminary reaction product (A) and the curable resin (B). More preferably, it is up to 30 parts by mass.
- the amount of the maleimide compound (B1) is too small, there is a tendency that the effect of containing the maleimide compound (B1) cannot be sufficiently exhibited. Moreover, if the amount of the reactive compound (B2) is too small, there is a tendency that the effect of containing the reactive compound (B2) cannot be sufficiently exhibited. Further, when the maleimide compound (B1) is too much, the reactive compound (B2) tends to be too small, and in this case, the effect of containing the reactive compound (B2) tends to be insufficient. There is Further, when the reactive compound (B2) is too much, the maleimide compound (B1) tends to be too small, and in this case, the effect of containing the maleimide compound (B1) tends to be insufficient. be.
- the curable resin (B) is a curable compound that becomes a resin by curing the resin composition, and may itself have a low molecular weight or a high molecular weight. Moreover, the curable resin (B) may be used alone or in combination of two or more.
- the maleimide compound (B1) is not particularly limited as long as it is a compound having a maleimide group in the molecule.
- Examples of the maleimide compound (B1) include monofunctional maleimide compounds having one maleimide group in the molecule, polyfunctional maleimide compounds having two or more maleimide groups in the molecule, and modified maleimide compounds.
- Examples of the modified maleimide compound include modified maleimide compounds partially modified with an amine compound, modified maleimide compounds partially modified with a silicone compound, and partially amine compounds. and modified maleimide compounds modified with silicone compounds.
- maleimide compound (B1) examples include maleimide compounds having a phenylmaleimide group in the molecule.
- Maleimide bisphenol A diphenyl ether bismaleimide, 3,3'-dimethyl-5,5'-diethyl-4,4'-diphenylmethanebismaleimide, 4-methyl-1,3-phenylenebismaleimide, 1,6'-bismaleimide -(2,2,4-trimethyl)hexane, biphenylaralkyl-type maleimide resins, maleimide compounds having a phenylmaleimide group and an arylene structure substituted at the meta position in the molecule, and the like.
- a commercially available product can be used as the maleimide compound (B1).
- BMI-1000 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- polyphenylmethane maleimide for example, BMI-2300 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- m-phenylenebismaleimide for example, BMI-3000 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- bisphenol A diphenyl ether bismaleimide for example, BMI-4000 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- a 3,3'-dimethyl-5,5'-diethyl-4,4'-diphenylmethanebismaleimide for example, BMI-5100 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- BMI-5100 manufactured by Daiwa Kasei Kogyo Co., Ltd. can be used.
- 4-methyl-1,3-phenylenebismaleimide for example, BMI-7000 manufactured by Daiwa Kasei Kogyo Co., Ltd.
- a 1,6'-bismaleimide-(2,2,4-trimethyl)hexane for example, BMI-TMH manufactured by Daiwa Kasei Kogyo Co., Ltd.
- BMI-TMH manufactured by Daiwa Kasei Kogyo Co., Ltd. can be used.
- the biphenylaralkyl-type maleimide compound for example, MIR-3000-70T manufactured by Nippon Kayaku Co., Ltd. can be used.
- the maleimide compound (B1) may be used alone or in combination of two or more.
- the reactive compound (B2) is not particularly limited as long as it is a reactive compound other than the maleimide compound (B1).
- examples of the reactive compound (B2) include unsaturated double bond-modified polyphenylene ether compounds terminally modified with a substituent having an unsaturated double bond, allyl compounds, acrylate compounds, methacrylate compounds, and polybutadiene compounds and Examples thereof include vinyl compounds such as styrene compounds.
- the unsaturated double bond-modified polyphenylene ether compound is not particularly limited as long as it is a modified polyphenylene ether compound terminally modified with a substituent having an unsaturated double bond.
- Examples of the unsaturated double bond-modified polyphenylene ether compound include those obtained by terminally modifying the polyphenylene ether compound (a1) with a substituent having an unsaturated double bond.
- Polyphenylene ether compound (styrene-modified polyphenylene ether) having a benzyl group (ethenylbenzyl group) at the molecular end, polyphenylene ether compound (acrylic-modified polyphenylene ether) having an acryloyl group at the molecular end, and polyphenylene ether having a methacryloyl group at the molecular end compounds (methacrylic-modified polyphenylene ether) and the like.
- the allyl compound is a compound having an allyl group in the molecule, and examples thereof include triallyl isocyanurate compounds such as triallyl isocyanurate (TAIC), diallyl bisphenol compounds, and diallyl phthalate (DAP).
- triallyl isocyanurate compounds such as triallyl isocyanurate (TAIC), diallyl bisphenol compounds, and diallyl phthalate (DAP).
- the acrylate compound is a compound having an acryloyl group in the molecule, and examples thereof include a monofunctional acrylate compound having one acryloyl group in the molecule and a polyfunctional acrylate compound having two or more acryloyl groups in the molecule. be done.
- the monofunctional acrylate compound include methyl acrylate, ethyl acrylate, propyl acrylate, and butyl acrylate.
- Examples of the polyfunctional acrylate compound include diacrylate compounds such as tricyclodecane dimethanol diacrylate.
- the methacrylate compound is a compound having a methacryloyl group in the molecule, and examples thereof include monofunctional methacrylate compounds having one methacryloyl group in the molecule, and polyfunctional methacrylate compounds having two or more methacryloyl groups in the molecule. be done.
- Examples of the monofunctional methacrylate compounds include methyl methacrylate, ethyl methacrylate, propyl methacrylate, and butyl methacrylate.
- Examples of the polyfunctional methacrylate compound include dimethacrylate compounds such as tricyclodecanedimethanol dimethacrylate (DCP).
- the vinyl compound is a compound having a vinyl group in the molecule.
- the vinyl compound include monofunctional vinyl compounds (monovinyl compounds) having one vinyl group in the molecule and polyfunctional vinyl compounds having two or more vinyl groups in the molecule.
- the monofunctional vinyl compound include styrene compounds.
- the polyfunctional vinyl compound include polyfunctional aromatic vinyl compounds and vinyl hydrocarbon compounds.
- the vinyl hydrocarbon compound include divinylbenzene and polybutadiene compounds.
- the unsaturated double bond-modified polyphenylene ether compound, allyl compound, acrylate compound, methacrylate compound, polybutadiene compound, and styrene compound are preferable for the reactive compound (B2).
- the reactive compound (B2) may be used alone or in combination of two or more. That is, the reactive compound (B2) includes an unsaturated double bond-modified polyphenylene ether compound terminally modified with a substituent having an unsaturated double bond, an allyl compound, an acrylate compound, a methacrylate compound, a polybutadiene compound, and a styrene compound. It is preferable to include at least one selected from the group consisting of
- the curable resin (B) may contain a curable resin (another curable resin) other than the maleimide compound (B1) and the reactive compound (B2).
- curable resins include, but are not limited to, benzoxazine compounds, acenaphthylene compounds, cyanate ester compounds, and active ester compounds.
- the other curable resin is preferably a benzoxazine compound. That is, the curable resin (B) preferably contains at least one selected from the maleimide compound (B1) and the reactive compound (B2), and further contains a benzoxazine compound.
- the content when the other curable resin is included is preferably 5 to 20% by mass with respect to a total of 100 parts by mass of the preliminary reaction product (A) and the curable resin (B). .
- the benzoxazine compound is a compound having a benzoxazine ring in the molecule, and examples thereof include benzoxazine resins.
- the benzoxazine compounds include benzoxazine compounds having a phenolphthalein structure in the molecule (phenolphthalein-type benzoxazine compounds), bisphenol F-type benzoxazine compounds, and diaminodiphenylmethane (DDM)-type benzoxazine compounds. mentioned.
- benzoxazine compound more specifically, 3,3′-(methylene-1,4-diphenylene)bis(3,4-dihydro-2H-1,3-benzoxazine) (Pd-type benzoxazine) oxazine compound), and 2,2-bis(3,4-dihydro-2H-3-phenyl-1,3-benzoxazine)methane (F-a type benzoxazine compound).
- the acenaphthylene compound is a compound having an acenaphthylene structure in its molecule.
- the acenaphthylene compounds include acenaphthylene, alkylacenaphthylenes, halogenated acenaphthylenes, and phenylacenaphthylenes.
- the alkylacenaphthylenes include 1-methylacenaphthylene, 3-methylacenaphthylene, 4-methylacenaphthylene, 5-methylacenaphthylene, 1-ethylacenaphthylene, and 3-ethylacenaphthylene.
- phthalene 4-ethylacenaphthylene, 5-ethylacenaphthylene and the like.
- halogenated acenaphthylenes include 1-chloroacenaphthylene, 3-chloroacenaphthylene, 4-chloroacenaphthylene, 5-chloroacenaphthylene, 1-bromoacenaphthylene, and 3-bromoacenaphthylene.
- rene 4-bromoacenaphthylene, 5-bromoacenaphthylene and the like.
- phenylacenaphthylenes examples include 1-phenylacenaphthylene, 3-phenylacenaphthylene, 4-phenylacenaphthylene, 5-phenylacenaphthylene and the like.
- the acenaphthylene compound may be a monofunctional acenaphthylene compound having one acenaphthylene structure in the molecule as described above, or a polyfunctional acenaphthylene compound having two or more acenaphthylene structures in the molecule. .
- the cyanate ester compound is a compound having a cyanato group in the molecule, and examples thereof include 2,2-bis(4-cyanatophenyl)propane, bis(3,5-dimethyl-4-cyanatophenyl)methane, and 2 , 2-bis(4-cyanatophenyl)ethane and the like.
- the active ester compound is a compound having an ester group with high reactivity in the molecule.
- acid active esters naphthalenedicarboxylic acid active esters, naphthalenetricarboxylic acid active esters, naphthalenetetracarboxylic acid active esters, fluorenecarboxylic acid active esters, fluorenecarboxylic acid active esters, fluorenetricarboxylic acid active esters, fluorenetetracarboxylic acid active esters, and the like. mentioned.
- the other curable resins may be used alone, or two or more of them may be used in combination.
- the content of the preliminary reaction product (A) is not particularly limited, but is 15 to 80 parts by mass with respect to a total of 100 parts by mass of the preliminary reaction product (A) and the curable resin (B), It is preferably 20 to 80 parts by mass, more preferably 30 to 50 parts by mass. That is, the content of the curable resin (B) is not particularly limited, but is 20 to 85 parts by mass with respect to a total of 100 parts by mass of the preliminary reaction product (A) and the curable resin (B). It is preferably 20 to 80 parts by mass, more preferably 50 to 70 parts by mass.
- the amount of the preliminary reaction product (A) is too small, that is, if the amount of the curable resin (B) is too large, it becomes difficult to maintain excellent low dielectric properties such as a high relative dielectric constant, and desmearing is difficult to occur. tend to become
- the amount of the curable resin (B) is too small, that is, if the amount of the pre-reactant (A) is too large, desmearing tends to occur too easily. Therefore, when the respective contents of the pre-reactant (A) and the curable resin (B) are within the above ranges, the susceptibility to desmearing and the like can be suitably adjusted while maintaining excellent low dielectric properties. be able to.
- the resin composition may or may not contain an inorganic filler, but preferably contains an inorganic filler.
- the inorganic filler is not particularly limited as long as it is an inorganic filler that can be used as an inorganic filler contained in the resin composition.
- the inorganic filler include metal oxides such as silica, alumina, titanium oxide, magnesium oxide and mica; metal hydroxides such as magnesium hydroxide and aluminum hydroxide; talc; aluminum borate; barium sulfate; Examples include aluminum, boron nitride, barium titanate, magnesium carbonate such as anhydrous magnesium carbonate, and calcium carbonate.
- silica metal hydroxides such as magnesium hydroxide and aluminum hydroxide, aluminum oxide, boron nitride, barium titanate, and the like are preferable, and silica is more preferable.
- the silica is not particularly limited, and examples thereof include crushed silica, spherical silica, silica particles, and the like.
- the inorganic filler may be a surface-treated inorganic filler or may be an inorganic filler that is not surface-treated.
- Examples of the surface treatment include treatment with a silane coupling agent.
- silane coupling agent examples include a group consisting of a vinyl group, a styryl group, a methacryloyl group, an acryloyl group, a phenylamino group, an isocyanurate group, a ureido group, a mercapto group, an isocyanate group, an epoxy group, and an acid anhydride group. and a silane coupling agent having at least one functional group selected from.
- this silane coupling agent has a vinyl group, a styryl group, a methacryloyl group, an acryloyl group, a phenylamino group, an isocyanurate group, a ureido group, a mercapto group, an isocyanate group, an epoxy group, and an acid anhydride as reactive functional groups.
- silane coupling agent having a vinyl group examples include vinyltriethoxysilane and vinyltrimethoxysilane.
- silane coupling agent having a styryl group examples include p-styryltrimethoxysilane and p-styryltriethoxysilane.
- silane coupling agent having a methacryloyl group examples include 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyl diethoxysilane, 3-methacryloxypropylethyldiethoxysilane, and the like.
- silane coupling agent having an acryloyl group examples include 3-acryloxypropyltrimethoxysilane and 3-acryloxypropyltriethoxysilane.
- silane coupling agent having a phenylamino group examples include N-phenyl-3-aminopropyltrimethoxysilane and N-phenyl-3-aminopropyltriethoxysilane.
- the average particle size of the inorganic filler is not particularly limited. For example, it is preferably 0.05 to 10 ⁇ m, more preferably 0.1 to 8 ⁇ m.
- the average particle size refers to the volume average particle size.
- the volume average particle size can be measured, for example, by a laser diffraction method or the like.
- the resin composition may contain an inorganic filler as described above.
- the content of the inorganic filler is 10 parts per 100 parts by weight of the total weight of the pre-reactant (A) and the curable resin (B). It is preferably up to 250 parts by mass, more preferably 40 to 200 parts by mass.
- the resin composition according to the present embodiment may optionally contain components (other components) other than the preliminary reaction product (A) and the curable resin (B) within a range that does not impair the effects of the present invention. may contain.
- Other components contained in the resin composition according to the present embodiment include not only the above-described inorganic fillers, but also reaction initiators, curing accelerators, catalysts, polymerization retarders, polymerization inhibitors, Additives such as dispersants, leveling agents, silane coupling agents, antifoaming agents, antioxidants, heat stabilizers, antistatic agents, UV absorbers, dyes and pigments, and lubricants may be further included.
- the resin composition according to this embodiment may contain a reaction initiator as described above.
- the curing reaction can proceed even if the resin composition does not contain a reaction initiator. However, depending on the process conditions, it may be difficult to increase the temperature until curing proceeds, so a reaction initiator may be added.
- the reaction initiator is not particularly limited as long as it can accelerate the curing reaction of the resin composition, and examples thereof include peroxides and organic azo compounds. Examples of the peroxide include dicumyl peroxide, ⁇ , ⁇ '-bis(t-butylperoxy-m-isopropyl)benzene, 2,5-dimethyl-2,5-di(t-butylperoxy )-3-hexyne, and benzoyl peroxide.
- organic azo compound azobisisobutyronitrile etc.
- carboxylic acid metal salt etc. can be used together as needed. By doing so, the curing reaction can be further accelerated.
- ⁇ , ⁇ '-bis(t-butylperoxy-m-isopropyl)benzene is preferably used. Since ⁇ , ⁇ '-bis(t-butylperoxy-m-isopropyl)benzene has a relatively high reaction initiation temperature, it suppresses the acceleration of the curing reaction at a time when curing is not necessary, such as when the prepreg is dried. It is possible to suppress the deterioration of the storage stability of the resin composition.
- reaction initiator since ⁇ , ⁇ '-bis(t-butylperoxy-m-isopropyl)benzene has low volatility, it does not volatilize during drying or storage of the prepreg and has good stability. Moreover, the reaction initiator may be used alone or in combination of two or more.
- the resin composition according to this embodiment may contain a curing accelerator as described above.
- the curing accelerator is not particularly limited as long as it can accelerate the curing reaction of the resin composition.
- Specific examples of the curing accelerator include imidazoles and derivatives thereof, organic phosphorus compounds, amines such as secondary amines and tertiary amines, quaternary ammonium salts, organic boron compounds, and metal soaps.
- Examples of the imidazoles include 2-ethyl-4-methylimidazole, 2-methylimidazole, 2-phenyl-4-methylimidazole, 2-phenylimidazole, and 1-benzyl-2-methylimidazole.
- organic phosphorus compounds include triphenylphosphine, diphenylphosphine, phenylphosphine, tributylphosphine, and trimethylphosphine.
- amines include dimethylbenzylamine, triethylenediamine, triethanolamine, and 1,8-diaza-bicyclo(5,4,0)undecene-7 (DBU).
- DBU 1,8-diaza-bicyclo(5,4,0)undecene-7
- tetrabutylammonium bromide etc. are mentioned as said quaternary ammonium salt.
- organic boron compounds examples include tetraphenylboron salts such as 2-ethyl-4-methylimidazole and tetraphenylborate, and tetrasubstituted phosphonium and tetrasubstituted borates such as tetraphenylphosphonium and ethyltriphenylborate.
- the metal soap refers to a fatty acid metal salt, and may be a linear fatty acid metal salt or a cyclic fatty acid metal salt. Specific examples of the metal soap include linear aliphatic metal salts and cyclic aliphatic metal salts having 6 to 10 carbon atoms.
- linear fatty acids such as stearic acid, lauric acid, ricinoleic acid, and octylic acid
- cyclic fatty acids such as naphthenic acid, lithium, magnesium, calcium, barium, copper, zinc, and the like.
- an aliphatic metal salt consisting of a metal and the like. Examples thereof include zinc octylate.
- the curing accelerator may be used alone or in combination of two or more.
- the resin composition according to this embodiment may contain a silane coupling agent as described above.
- the silane coupling agent may be contained in the resin composition, or may be contained as a silane coupling agent surface-treated in advance in the inorganic filler contained in the resin composition.
- the silane coupling agent is preferably contained as a silane coupling agent surface-treated in advance on the inorganic filler.
- the prepreg may contain a silane coupling agent that is previously surface-treated on the fibrous base material. Examples of the silane coupling agent include those similar to the silane coupling agent used when surface-treating the inorganic filler described above.
- the resin composition according to this embodiment may contain a flame retardant as described above.
- a flame retardant By containing a flame retardant, the flame retardancy of the cured product of the resin composition can be enhanced.
- the flame retardant is not particularly limited. Specifically, in the field of using halogen-based flame retardants such as brominated flame retardants, for example, ethylene dipentabromobenzene, ethylenebistetrabromoimide, decabromodiphenyl oxide, tetradecabromodi Phenoxybenzene and bromostyrene compounds that react with the polymerizable compound are preferred.
- halogen-based flame retardants such as brominated flame retardants, for example, ethylene dipentabromobenzene, ethylenebistetrabromoimide, decabromodiphenyl oxide, tetradecabromodi Phenoxybenzene and bromostyrene compounds that react with the polymerizable compound are preferred.
- a halogen-based flame retardant
- phosphorus-containing flame retardants are sometimes used.
- the phosphorus-based flame retardant is not particularly limited, but includes, for example, a phosphate-based flame retardant, a phosphazene-based flame retardant, a bisdiphenylphosphine oxide-based flame retardant, and a phosphinate-based flame retardant.
- a phosphate-based flame retardant include condensed phosphate of dixylenyl phosphate.
- a specific example of the phosphazene-based flame retardant is phenoxyphosphazene.
- bisdiphenylphosphine oxide flame retardants include xylylenebisdiphenylphosphine oxide.
- phosphinate-based flame retardants include metal phosphinates of aluminum dialkylphosphinates.
- each of the exemplified flame retardants may be used alone, or two or more thereof may be used in combination.
- the resin composition is used in manufacturing a prepreg, as described later. Moreover, the resin composition is used when forming a resin layer provided in a resin-coated metal foil and a resin-coated film, and an insulating layer provided in a metal-clad laminate and a wiring board. In addition, as described above, the resin composition provides a cured product having excellent low dielectric properties such as a low dielectric constant. Therefore, the resin composition is suitably used to form an insulating layer provided in a wiring board for high frequencies such as a wiring board for antennas and an antenna substrate for millimeter wave radar. That is, the resin composition is suitable for manufacturing wiring boards compatible with high frequencies.
- the method for producing the resin composition is not particularly limited. A method of mixing the resin (B) so as to obtain a predetermined content, and the like can be mentioned. Moreover, when obtaining the varnish-like composition containing an organic solvent, the method etc. which are mentioned later are mentioned.
- a prepreg, a metal-clad laminate, a wiring board, a resin-coated metal foil, and a resin-coated film can be obtained as follows.
- FIG. 1 is a schematic cross-sectional view showing an example of a prepreg 1 according to an embodiment of the invention.
- a prepreg 1 according to the present embodiment includes the resin composition or a semi-cured material 2 of the resin composition, and a fibrous base material 3, as shown in FIG.
- the prepreg 1 comprises the resin composition or a semi-cured material 2 of the resin composition, and a fibrous base material 3 present in the resin composition or the semi-cured material 2 of the resin composition.
- the semi-cured product is a state in which the resin composition is partially cured to the extent that it can be further cured. That is, the semi-cured product is a semi-cured resin composition (B-staged). For example, when a resin composition is heated, the viscosity of the resin composition first gradually decreases, and thereafter, curing starts and the viscosity gradually increases. In such a case, semi-curing includes the state between when the viscosity starts to rise and before it is completely cured.
- the prepreg obtained using the resin composition according to the present embodiment may include a semi-cured product of the resin composition as described above, or may be the uncured resin composition. It may be provided with the same. That is, it may be a prepreg comprising a semi-cured product of the resin composition (the resin composition in the B stage) and a fibrous base material, or the resin composition before curing (the resin composition in the A stage). and a fibrous base material. Further, the resin composition or the semi-cured product of the resin composition may be obtained by drying or heat-drying the resin composition.
- the resin composition 2 is often prepared in the form of a varnish and used to impregnate the fibrous base material 3, which is the base material for forming the prepreg. That is, the resin composition 2 is usually a resin varnish prepared in the form of a varnish.
- a varnish-like resin composition (resin varnish) is prepared, for example, as follows.
- each component that can be dissolved in an organic solvent is put into the organic solvent and dissolved. At this time, it may be heated, if necessary. After that, a component that is insoluble in an organic solvent, which is used as necessary, is added, and dispersed by using a ball mill, a bead mill, a planetary mixer, a roll mill, or the like, until a predetermined dispersed state is obtained, thereby forming a varnish-like resin.
- a composition is prepared.
- the organic solvent used here is not particularly limited as long as it dissolves the polyphenylene ether compound, the curing agent and the like and does not inhibit the curing reaction. Specific examples include toluene and methyl ethyl ketone (MEK).
- the fibrous base material include glass cloth, aramid cloth, polyester cloth, glass nonwoven fabric, aramid nonwoven fabric, polyester nonwoven fabric, pulp paper, and linter paper.
- glass cloth When glass cloth is used, a laminate having excellent mechanical strength can be obtained, and flattened glass cloth is particularly preferable.
- Specific examples of the flattening process include a method in which glass cloth is continuously pressed with press rolls at an appropriate pressure to flatten the yarn.
- the thickness of the generally used fibrous base material is, for example, 0.01 mm or more and 0.3 mm or less.
- the glass fibers constituting the glass cloth are not particularly limited, but examples thereof include Q glass, NE glass, E glass, S glass, T glass, L glass, and L2 glass.
- the surface of the fibrous base material may be surface-treated with a silane coupling agent.
- the silane coupling agent is not particularly limited, but for example, a silane coupling agent having in its molecule at least one selected from the group consisting of a vinyl group, an acryloyl group, a methacryloyl group, a styryl group, an amino group, and an epoxy group. agents and the like.
- the method for manufacturing the prepreg is not particularly limited as long as the prepreg can be manufactured.
- the resin composition according to the present embodiment is often prepared into a varnish and used as a resin varnish, as described above.
- the method for producing the prepreg 1 includes a method of impregnating the fibrous base material 3 with the resin composition 2, for example, the resin composition 2 prepared in the form of a varnish, and then drying the resin composition. .
- the resin composition 2 is impregnated into the fibrous base material 3 by dipping, coating, or the like. It is also possible to repeat impregnation several times as needed. In this case, it is also possible to adjust the desired composition and impregnation amount by repeating the impregnation using a plurality of resin compositions having different compositions and concentrations.
- the fibrous base material 3 impregnated with the resin composition (resin varnish) 2 is heated under desired heating conditions, for example, 40° C. or higher and 180° C. or lower for 1 minute or longer and 10 minutes or shorter.
- desired heating conditions for example, 40° C. or higher and 180° C. or lower for 1 minute or longer and 10 minutes or shorter.
- the prepreg 1 is obtained before curing (A stage) or in a semi-cured state (B stage).
- the heating can volatilize the organic solvent from the resin varnish and reduce or remove the organic solvent.
- the resin composition according to the present embodiment is a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained. Therefore, a prepreg comprising this resin composition or a semi-cured product of this resin composition is a prepreg that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained.
- This prepreg is excellent in low dielectric properties, heat resistance, and desmear resistance, and can suitably produce a wiring board provided with an insulating layer containing a cured product with a high glass transition temperature.
- FIG. 2 is a schematic cross-sectional view showing an example of the metal-clad laminate 11 according to the embodiment of the invention.
- a metal-clad laminate 11 has an insulating layer 12 containing a cured product of the resin composition and a metal foil 13 provided on the insulating layer 12, as shown in FIG.
- the metal-clad laminate 11 for example, a metal-clad laminate composed of an insulating layer 12 containing a cured product of the prepreg 1 shown in FIG. mentioned.
- the insulating layer 12 may be made of a cured product of the resin composition, or may be made of a cured product of the prepreg.
- the thickness of the metal foil 13 is not particularly limited, and varies depending on the performance required for the finally obtained wiring board.
- the thickness of the metal foil 13 can be appropriately set according to the desired purpose, and is preferably 0.2 to 70 ⁇ m, for example.
- Examples of the metal foil 13 include copper foil and aluminum foil.
- a carrier-attached copper foil having a peeling layer and a carrier for improving handling properties can be used. good too.
- the method for manufacturing the metal-clad laminate 11 is not particularly limited as long as the metal-clad laminate 11 can be manufactured. Specifically, a method of producing a metal-clad laminate 11 using the prepreg 1 is mentioned. As this method, one or more sheets of the prepreg 1 are stacked, and a metal foil 13 such as a copper foil is stacked on both upper and lower sides or one side of the prepreg 1, and the metal foil 13 and the prepreg 1 are heat-pressed. Examples include a method of manufacturing a laminated plate 11 with metal foil on both sides or one side with metal foil by lamination and integration. That is, the metal-clad laminate 11 is obtained by laminating the metal foil 13 on the prepreg 1 and molding the metal foil 13 under heat and pressure.
- the conditions for the heating and pressurization can be appropriately set according to the thickness of the metal-clad laminate 11, the type of the resin composition contained in the prepreg 1, and the like.
- the temperature can be 170-230° C.
- the pressure can be 2-4 MPa
- the time can be 60-150 minutes.
- the metal-clad laminate may be produced without using a prepreg.
- the resin composition according to the present embodiment is a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained. Therefore, a metal-clad laminate having an insulating layer containing a cured product of this resin composition has excellent low dielectric properties, heat resistance, and desmear resistance, and has a metal-clad laminate containing an insulating layer containing a cured product having a high glass transition temperature. Laminated board. This metal-clad laminate is excellent in low dielectric properties, heat resistance, and desmear resistance, and can be suitably used to manufacture a wiring board having an insulating layer containing a cured product with a high glass transition temperature.
- FIG. 3 is a schematic cross-sectional view showing an example of the wiring board 21 according to the embodiment of the invention.
- a wiring board 21 according to the present embodiment has an insulating layer 12 containing a cured product of the resin composition, and wiring 14 provided on the insulating layer 12, as shown in FIG.
- the wiring board 21 for example, the insulating layer 12 used by curing the prepreg 1 shown in FIG. 14 and the like.
- the insulating layer 12 may be made of a cured product of the resin composition, or may be made of a cured product of the prepreg.
- the method for manufacturing the wiring board 21 is not particularly limited as long as the wiring board 21 can be manufactured. Specifically, a method of manufacturing a wiring board 21 using the prepreg 1, and the like can be mentioned. As this method, for example, wiring is formed on the surface of the insulating layer 12 as a circuit by etching the metal foil 13 on the surface of the metal-clad laminate 11 produced as described above to form wiring. A method of manufacturing the provided wiring board 21 and the like can be mentioned. That is, the wiring board 21 is obtained by partially removing the metal foil 13 on the surface of the metal-clad laminate 11 to form a circuit.
- the method of forming a circuit includes, for example, circuit formation by a semi-additive process (SAP: Semi-Additive Process) or a modified semi-additive process (MSAP: Modified Semi-Additive Process).
- SAP Semi-Additive Process
- MSAP Modified Semi-Additive Process
- the wiring board 21 is a wiring board provided with an insulating layer 12 having excellent low dielectric properties, heat resistance, and desmear resistance, and containing a cured product with a high glass transition temperature.
- FIG. 4 is a schematic cross-sectional view showing an example of the resin-coated metal foil 31 according to this embodiment.
- the resin-coated metal foil 31 includes a resin layer 32 containing the resin composition or a semi-cured material of the resin composition, and a metal foil 13, as shown in FIG.
- This resin-coated metal foil 31 has a metal foil 13 on the surface of the resin layer 32 . That is, the resin-coated metal foil 31 includes the resin layer 32 and the metal foil 13 laminated together with the resin layer 32 . Moreover, the resin-coated metal foil 31 may have another layer between the resin layer 32 and the metal foil 13 .
- the resin layer 32 may contain a semi-cured material of the resin composition as described above, or may contain an uncured resin composition. That is, the resin-coated metal foil 31 may include a resin layer containing a semi-cured product of the resin composition (the B-stage resin composition) and a metal foil, or may include the resin before curing. It may be a resin-coated metal foil comprising a resin layer containing the composition (the resin composition in the A stage) and a metal foil.
- the resin layer may contain the resin composition or a semi-cured material of the resin composition, and may or may not contain a fibrous base material. Further, the resin composition or the semi-cured product of the resin composition may be obtained by drying or heat-drying the resin composition.
- the fibrous base material the same fibrous base material as the prepreg can be used.
- metal foils used for metal-clad laminates and metal foils with resin can be used without limitation.
- examples of the metal foil include copper foil and aluminum foil.
- the resin-coated metal foil 31 may be provided with a cover film or the like, if necessary.
- a cover film By providing the cover film, it is possible to prevent foreign matter from entering.
- the cover film include, but are not limited to, polyolefin films, polyester films, polymethylpentene films, and films formed by providing these films with a release agent layer.
- the method for manufacturing the resin-coated metal foil 31 is not particularly limited as long as the resin-coated metal foil 31 can be manufactured.
- Examples of the method for producing the resin-coated metal foil 31 include a method in which the varnish-like resin composition (resin varnish) is applied onto the metal foil 13 and heated.
- the varnish-like resin composition is applied onto the metal foil 13 by using, for example, a bar coater.
- the applied resin composition is heated, for example, under conditions of 40° C. or higher and 180° C. or lower and 0.1 minute or longer and 10 minutes or shorter.
- the heated resin composition forms an uncured resin layer 32 on the metal foil 13 .
- the heating can volatilize the organic solvent from the resin varnish and reduce or remove the organic solvent.
- the resin composition according to the present embodiment is a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained. Therefore, a resin-coated metal foil comprising a resin layer containing this resin composition or a semi-cured product of this resin composition has excellent low dielectric properties, heat resistance, and desmear resistance, and provides a cured product with a high glass transition temperature. It is a resin-coated metal foil provided with a resin layer. This resin-coated metal foil is excellent in low dielectric properties, heat resistance, and desmear resistance, and can be used when manufacturing a wiring board provided with an insulating layer containing a cured product with a high glass transition temperature.
- a multilayer wiring board can be manufactured by laminating on a wiring board.
- a wiring board obtained using such a resin-coated metal foil has excellent low dielectric properties, heat resistance, and desmear resistance, and is provided with an insulating layer containing a cured product with a high glass transition temperature.
- FIG. 5 is a schematic cross-sectional view showing an example of the resin-coated film 41 according to this embodiment.
- the resin-coated film 41 includes a resin layer 42 containing the resin composition or a semi-cured material of the resin composition, and a support film 43, as shown in FIG.
- the resin-coated film 41 includes the resin layer 42 and a support film 43 laminated together with the resin layer 42 . Further, the resin-coated film 41 may have another layer between the resin layer 42 and the support film 43 .
- the resin layer 42 may contain a semi-cured material of the resin composition as described above, or may contain an uncured resin composition. That is, the resin-coated film 41 may include a resin layer containing a semi-cured product of the resin composition (the B-stage resin composition) and a support film. It may be a resin-coated film comprising a resin layer containing a substance (the resin composition in the A stage) and a support film.
- the resin layer may contain the resin composition or a semi-cured material of the resin composition, and may or may not contain a fibrous base material. Further, the resin composition or the semi-cured product of the resin composition may be obtained by drying or heat-drying the resin composition.
- the fibrous base material the same fibrous base material as that of the prepreg can be used.
- a support film used for resin-coated films can be used without limitation.
- the support film include electrically insulating films such as polyester film, polyethylene terephthalate (PET) film, polyimide film, polyparabanic acid film, polyetheretherketone film, polyphenylene sulfide film, polyamide film, polycarbonate film, and polyarylate film. A film etc. are mentioned.
- the resin-coated film 41 may be provided with a cover film or the like, if necessary. By providing the cover film, it is possible to prevent foreign matter from entering. Examples of the cover film include, but are not limited to, polyolefin film, polyester film, and polymethylpentene film.
- the support film and the cover film may be subjected to surface treatments such as matte treatment, corona treatment, mold release treatment, and roughening treatment, if necessary.
- the method for manufacturing the resin-coated film 41 is not particularly limited as long as the resin-coated film 41 can be manufactured.
- Examples of the method for manufacturing the resin-coated film 41 include a method for manufacturing by applying the varnish-like resin composition (resin varnish) on the support film 43 and heating.
- the varnish-like resin composition is applied onto the support film 43 by using, for example, a bar coater.
- the applied resin composition is heated, for example, under conditions of 40° C. or higher and 180° C. or lower and 0.1 minute or longer and 10 minutes or shorter.
- the heated resin composition forms an uncured resin layer 42 on the support film 43 .
- the heating can volatilize the organic solvent from the resin varnish and reduce or remove the organic solvent.
- the resin composition according to the present embodiment is a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained. Therefore, a resin-coated film comprising a resin layer containing this resin composition or a semi-cured product of this resin composition is excellent in low dielectric properties, heat resistance, and desmear resistance, and a cured product with a high glass transition temperature can be obtained.
- a resin-coated film having a resin layer. This resin-coated film is excellent in low dielectric properties, heat resistance, and desmear resistance, and can be suitably used when manufacturing a wiring board provided with an insulating layer containing a cured product with a high glass transition temperature.
- a multilayer wiring board can be manufactured by laminating on a wiring board and then peeling off the supporting film, or by laminating on the wiring board after peeling off the supporting film.
- a wiring board obtained using such a resin-coated film has excellent low dielectric properties, heat resistance, and desmear resistance, and is provided with an insulating layer containing a cured product with a high glass transition temperature.
- the present invention it is possible to provide a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained. Moreover, according to the present invention, it is possible to provide a prepreg, a resin-coated film, a resin-coated metal foil, a metal-clad laminate, and a wiring board obtained using the resin composition.
- Preliminary Reactant (A) Preliminary Reactants A1 to A14
- a preliminary reactant (A) used in each example and comparative example was prepared.
- Acid anhydride 1 A mixture of 4-methylhexahydrophthalic anhydride and hexahydrophthalic anhydride (mass ratio 70:30) (Rikacid MH-700 manufactured by Shin Nippon Rika Co., Ltd., monofunctional acid anhydride, liquid alicyclic Formula acid anhydride, functional group equivalent of acid anhydride group 161 to 166 g / eq, freezing point 20 ° C.)
- Acid anhydride 2 Octenyl succinic anhydride (Likacid OSA manufactured by Shin Nippon Rika Co., Ltd., monofunctional acid anhydride, liquid alicyclic acid an
- the ring-opening rate obtained by the calculation method was adjusted to be as high as possible (at least 80% or more). Specifically, when preparing the preliminary reactants A1 and A9, the reaction temperature was set to 80° C. and the reaction time was set to 10 hours. Further, when preparing the preliminary reactants A2, A3, A5-8, A10 and A11, the reaction temperature was set to 80° C. and the reaction time was set to 5 hours. When preparing the preliminary reactant A4, the reaction temperature was set to 80° C. and the reaction time was set to 3 hours. When preparing pre-reactants A12, A13 and A14, the reaction temperature was 20° C. and the reaction time was 6 hours. Table 1 shows the ring-opening ratios of the pre-reactants A1 to A14.
- the equivalent ratios listed in Table 1 are obtained based on the reacting functional groups (reactive groups). That is, the equivalence ratio shown in Table 1 is obtained by dividing the amount of each compound by the equivalent of each functional group. It should be noted that the equivalence ratio is not calculated as an integer ratio or the like, but is a ratio obtained by appropriately approximating the value by rounding off or the like. That is, the equivalent ratios shown in Table 1 are approximated by rounding off the ratios of the values obtained by dividing each compounding amount by each functional group equivalent.
- the polyphenylene ether compound (a1) has a phenol equivalent (hydroxy group equivalent) of 850 g/eq
- the acid anhydride (a2) has an acid anhydride functional group equivalent of 161 to 166 g/eq.
- calculation is performed with the functional group equivalent of the acid anhydride group of the acid anhydride (a2) being 163 g/eq.
- the blending amount of the polyphenylene ether compound (a1) is 23.3 parts by mass, and the blending amount of the acid anhydride (a2) is 6.7.
- the equivalence ratio in pre-reactant A1 is therefore 1:1.5. That is, the equivalent ratio of the acid anhydride groups of the acid anhydride (a2) to the hydroxyl groups of the polyphenylene ether compound (a1) is 1.5.
- Preliminary reactant (A) As the preliminary reactant (A), the preliminary reactants A1 to A14 described above were used.
- PPE PPE
- a polyphenylene ether compound having a hydroxyl group in the molecule SA90 manufactured by SABIC Innovative Plastics, number of terminal hydroxyl groups: 2, number average molecular weight Mn: 1700, phenol equivalent (hydroxyl equivalent): 850 g/eq) was used.
- Acid anhydride 1 The same acid anhydride as acid anhydride 1 used in the preparation of the pre-reactant was used. Specifically, a mixture of 4-methylhexahydrophthalic anhydride and hexahydrophthalic anhydride (mass ratio 70:30) (Rikacid MH-700 manufactured by Shin Nippon Rika Co., Ltd., monofunctional acid anhydride, liquid alicyclic formula acid anhydride, functional group equivalent of acid anhydride group 161-166 g/eq, freezing point 20°C) was used. In the example using this acid anhydride 1 (the example in which the composition of acid anhydride 1 is described in Table 2: Comparative Example 3), the preliminary reaction was not performed.
- maleimide compound 1 Biphenylaralkyl-type bismaleimide compound (MIR-3000-70MT manufactured by Nippon Kayaku Co., Ltd., bismaleimide compound, functional group equivalent of maleimide group: 275 g/eq)
- Maleimide compound 2 3,3'-dimethyl-5,5'-diethyl-4,4'-diphenylmethane bismaleimide (BMI-5100 manufactured by Nippon Kayaku Co., Ltd., bismaleimide compound, functional group equivalent of maleimide group 221 g/ eq) (Reactive compound: reactive compound other than maleimide compound)
- Modified PPE1 polyphenylene ether compound (styrene-modified polyphenylene ether) having a vinylbenzyl group (ethenylbenzyl group) at the molecular end (Mitsubishi Gas Chemical Co., Ltd.
- Modified PPE2 Polyphenylene ether compound having a methacryloyl group at the molecular end (methacrylic-modified polyphenylene ether) (SA9000 manufactured by Saudi Basic Industries Corporation, weight average molecular weight Mw 1700, functional group equivalent of methacryloyl group 850 g/eq) (Benzoxazine compound)
- Benzoxazine compound 1 3,3′-(methylene-1,4-diphenylene)bis(3,4-dihydro-2H-1,3-benzoxazine) (Pd-type benzoxazine manufactured by Shikoku Kasei Co., Ltd.) compound, functional group equivalent weight of benzoxazine group 217 g/eq)
- Benzoxazine compound 2 2,2-bis (3,4-dihydro-2H-3-phenyl-1,3-benzoxazine compound 2: 2,2-bis (3,4-dihydro-2H-3-phenyl-1,3-benz
- Preparation method First, components other than the inorganic filler are added to methyl ethyl ketone (MEK) so that the solid content concentration is 60% by mass with the composition (parts by mass) shown in Tables 2 and 3, and stirred and mixed with a disper. and homogenized. An inorganic filler was added to the homogenized mixture in the composition (parts by mass) shown in Tables 2 and 3, and the mixture was stirred and mixed with a disper for 2 hours to homogenize. By doing so, a varnish-like resin composition (varnish) was obtained.
- MEK methyl ethyl ketone
- a fibrous base material (glass cloth: "2116 type cloth” manufactured by Nitto Boseki Co., Ltd.) was impregnated with the obtained varnish, and then dried by heating at 150°C in a non-contact type heating unit. By doing so, the solvent in the varnish was removed and the resin composition was semi-cured to obtain a prepreg (340 mm ⁇ 510 mm). At that time, the content (resin content) of the components constituting the resin composition by the curing reaction relative to the prepreg was adjusted to 47% by mass.
- evaluation substrate 1 metal-clad laminate
- a copper clad laminate (evaluation board 2: metal clad laminate board) was obtained.
- a copper clad laminate (evaluation board 3: metal clad laminate board) was obtained.
- Evaluation substrates 1 to 3 (copper clad laminates) prepared as described above were evaluated by the method shown below.
- the copper foil on the surface of the evaluation substrate 1 was removed by etching.
- the substrate from which the copper foil has been removed is immersed in a swelling liquid (Swelling Dip Securigant P manufactured by Atotech Japan Co., Ltd.) at 60 ° C. for 5 minutes, and then an aqueous potassium permanganate solution (manufactured by Atotech Japan Co., Ltd. (Concentrate Compact CP) at 80° C. for 10 minutes, and then neutralized.
- the weight of the substrate is measured, and the amount of weight reduction due to the desmear process (the weight of the substrate before the desmear process - the weight of the substrate after the desmear process) is calculated, and the amount of weight reduction is calculated. , the amount of weight loss per 1 mm 2 (mg/mm 2 ) was calculated. Based on the amount of weight reduction per 1 mm 2 , evaluation was made as follows.
- weight loss per 1 mm2 is less than 15 mg/ mm2 , it is evaluated as "A (x)", and if it is 15 mg/ mm2 or more and less than 30 mg/ mm2 , it is evaluated as "B ( ⁇ )”. If it was 30 mg/mm 2 or more and less than 45 mg/mm 2 , it was evaluated as "C ( ⁇ )”, and if it was 45 mg/mm 2 or more, it was evaluated as "D (x)".
- Glass transition temperature Tg An unclad board obtained by removing the copper foil from the evaluation board 2 (copper-clad laminate) by etching is used as a test piece, and a viscoelastic spectrometer "DMS6100" manufactured by Seiko Instruments Inc. is used to measure the unclad board (evaluation board). 2) was measured for glass transition temperature (Tg). At this time, dynamic viscoelasticity measurement (DMA) is performed with a bending module at a frequency of 10 Hz, and the temperature at which tan ⁇ when the temperature is raised from room temperature to 280 ° C. at a temperature increase rate of 5 ° C./min is the glass transition temperature. The temperature was taken as Tg (°C). In addition, it is preferable that the glass transition temperature is 200° C. or higher.
- DMA dynamic viscoelasticity measurement
- the polyphenylene ether compound (a1) and the acid anhydride (a2) are calculated in the equivalent ratio (acid anhydride of the acid anhydride (a2) to the hydroxyl group of the polyphenylene ether compound (a1) group equivalent ratio) is 1.5 or less, and the curable resin (B) is included, and the content of the curable resin (B) is the above
- a resin composition that is 20 to 85 parts by mass with respect to 100 parts by mass of the total (total mass) of the preliminary reaction product (A) and the curable resin (B) (Examples 1 to 19)
- low dielectric It was found that a cured product having excellent properties, heat resistance, desmear resistance, and a high glass transition temperature can be obtained.
- the content of the curable resin (B) is 10 parts by mass, which is less than 20 parts by mass with respect to the total mass of 100 parts by mass (Comparative example In 4), it was found that the resin was too easily scraped off due to desmear. Further, even if the preliminary reaction product (A) is included, if the content of the curable resin (B) is 90 parts by mass that is more than 85 parts by mass with respect to the total mass of 100 parts by mass ( Comparative Example 5) was less likely to be desmeared. Moreover, the dielectric constant Dk was also high.
- the content of the preliminary reaction product (A) is small, the content of the structure derived from the PPE (a1) and the content of the structure derived from the acid anhydride (a2) are also small. According to From the comparison between Comparative Examples 4 and 5 and Examples 1 to 19 (in particular, Example 2, Examples 6 to 8, and Examples 16 to 19), the content of the curable resin (B) is , with respect to the total mass of 100 parts by mass, it was found that it is necessary to be 20 to 85 parts by mass.
- the equivalent ratio should be 1.5 or less, preferably 0.3 to 1.5.
- the acid anhydride used in preparing the preliminary reaction product (A) does not have to be a specific acid anhydride, and various acid anhydrides can be used. also found to be good.
- the curable resin (B) may have various compositions.
- the inorganic filler does not have to be a specific inorganic filler, and that various inorganic fillers may be used.
- a resin composition that is excellent in low dielectric properties, heat resistance, and desmear resistance, and from which a cured product with a high glass transition temperature can be obtained.
- the present invention also provides a prepreg, a resin-coated film, a resin-coated metal foil, a metal-clad laminate, and a wiring board obtained using the resin composition.
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Abstract
Description
本発明の一実施形態に係る樹脂組成物は、水酸基を分子内に有するポリフェニレンエーテル化合物(a1)と、酸無水物基を分子内に有する酸無水物(a2)とを予め反応させた予備反応物(A)と、不飽和二重結合を分子内に有する反応性化合物を含む硬化性樹脂(B)とを含む。前記ポリフェニレンエーテル化合物(a1)の水酸基に対する前記酸無水物(a2)の酸無水物基の当量比(前記酸無水物(a2)の酸無水物基/前記ポリフェニレンエーテル化合物(a1)の水酸基)が1.5以下である。すなわち、前記ポリフェニレンエーテル化合物(a1)の水酸基の量を1当量としたときに、前記酸無水物(a2)の酸無水物基の量が1.5当量以下である。前記硬化性樹脂(B)の含有量が、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、20~85質量部である。このような構成の樹脂組成物は、硬化させることによって、低誘電特性、耐熱性、及びデスミア性に優れ、ガラス転移温度の高い硬化物が得られる。
前記予備反応物(A)は、水酸基を分子内に有するポリフェニレンエーテル化合物(a1)と、酸無水物基を分子内に有する酸無水物(a2)とを予め反応させた予備反応物であれば、特に限定されない。前記予備反応物(A)は、前記硬化性樹脂(B)と反応可能である。前記樹脂組成物は、前記予備反応物(A)と前記硬化性樹脂(B)とが反応することによって、硬化される。前記樹脂組成物には、前記予備反応物(A)として、前記ポリフェニレンエーテル化合物(a1)と前記酸無水物(a2)とを反応させた反応物を含んでいればよく、反応しなかった前記ポリフェニレンエーテル化合物(a1)を含んでいてもよいし、反応しなかった前記酸無水物(a2)を含んでいてもよい。前記樹脂組成物には、前記予備反応物(A)として、前記反応物を含み、前記ポリフェニレンエーテル化合物(a1)と、前記酸無水物(a2)とをさらに含んでいてもよい。
前記ポリフェニレンエーテル化合物(a1)は、水酸基を分子内に有するポリフェニレンエーテル化合物であれば、特に限定されない。前記ポリフェニレンエーテル化合物(a1)は、ポリフェニレンエーテル鎖を分子内に有しており、例えば、下記式(1)で表される繰り返し単位を分子内に有していることが好ましい。
前記酸無水物(a2)は、酸無水物基を分子内に有する酸無水物であれば、特に限定されない。前記酸無水物基は、異なる分子内にそれぞれ有するカルボン酸が脱水縮合した構造を有するものであってもよいし、分子内の2つのカルボン酸が脱水縮合した構造を有するものであってもよい。また、前記酸無水物(a2)としては、前記酸無水物基を分子内に1つ有する酸無水物(単官能酸無水物)であってもよいし、前記酸無水物基を分子内に2つ以上有する酸無水物(多官能酸無水物)であってもよい。前記酸無水物(a2)は、環状の酸無水物基を分子内に1つ以上有する酸無水物を含むことが好ましい。また、前記酸無水物(a2)の炭素数は、特に限定されないが、6以上が好ましく、8以上がより好ましく、また、25以下が好ましく、18以下がより好ましい。
前記反応において、触媒を用いてもよい。前記触媒としては、前記ポリエチレンエーテル化合物(a1)と前記酸無水物(a2)との反応の進行に寄与する触媒であれば、特に限定されず、例えば、2-エチル-4-メチルイミダゾール(2E4MZ)等が挙げられる。
前記樹脂組成物には、前記予備反応物(A)として、前記ポリフェニレンエーテル化合物(a1)と前記酸無水物(a2)とを反応させて得られた反応物を含む。この反応において、前記ポリフェニレンエーテル化合物(a1)の水酸基が、前記酸無水物(a2)の酸無水物基に作用し、前記酸無水物基が開環して、エステル結合が形成され得る。すなわち、前記反応物には、エステル結合を分子内に有する。また、この反応において、前記酸無水物基の開環により、カルボキシル基が生じる。これらのことから、前記反応が好適に進行すると、エステル結合及びカルボキシル基を分子内に有するエステル・カルボキシル変性ポリフェニレンエーテル化合物が得られる。よって、前記予備反応物(A)には、1つ以上のエステル結合及びカルボキシル基を有する置換基により末端変性されたエステル・カルボキシル変性ポリフェニレンエーテル化合物を含むことが好ましい。
これにより、前記酸無水物の開環率を求めることができる。
前記硬化性樹脂(B)は、不飽和二重結合を分子内に有する反応性化合物を含む硬化性樹脂(B)であれば、特に限定されない。前記反応性化合物は、不飽和二重結合を分子内に有する反応性化合物であれば、特に限定されない。前記反応性化合物としては、例えば、マレイミド化合物(B1)が挙げられ、前記マレイミド化合物(B1)以外の反応性化合物(B2)も挙げられる。すなわち、前記硬化性樹脂(B)は、マレイミド化合物(B1)のみを含んでいてもよいし、前記マレイミド化合物(B1)以外の反応性化合物(B2)のみを含んでいてもよいし、前記マレイミド化合物(B1)と前記反応性化合物(B2)との両者を含んでいてもよい。また、前記硬化性樹脂(B)は、この中でも、前記マレイミド化合物(B1)と前記反応性化合物(B2)との両者を含むことが好ましい。この両者を含む場合、前記マレイミド化合物(B1)の含有量は、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、10~70質量部であることが好ましく、40~60質量部であることがより好ましい。また、前記反応性化合物(B2)の含有量は、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、10~70質量部であることが好ましく、10~30質量部であることがより好ましい。前記マレイミド化合物(B1)が少なすぎると、前記マレイミド化合物(B1)を含有させた効果を充分に発揮できなくなる傾向がある。また、前記反応性化合物(B2)が少なくなりすぎると、前記反応性化合物(B2)を含有させた効果を充分に発揮できなくなる傾向がある。また、前記マレイミド化合物(B1)が多すぎると、前記反応性化合物(B2)が少なくなりすぎる傾向があり、この場合、前記反応性化合物(B2)を含有させた効果を充分に発揮できなくなる傾向がある。また、前記反応性化合物(B2)が多すぎると、前記マレイミド化合物(B1)が少なくなりすぎる傾向があり、この場合、前記マレイミド化合物(B1)を含有させた効果を充分に発揮できなくなる傾向がある。また、前記硬化性樹脂(B)は、前記樹脂組成物を硬化することによって、樹脂となる硬化性化合物であって、それ自体が低分子量であっても高分子量であってもよい。また、前記硬化性樹脂(B)は、単独で用いてもよいし、2種以上を組わせて用いてもよい。
前記マレイミド化合物(B1)は、前記分子中にマレイミド基を有する化合物であれば、特に限定されない。前記マレイミド化合物(B1)としては、分子中にマレイミド基を1個有する単官能マレイミド化合物、分子中にマレイミド基を2個以上有する多官能マレイミド化合物、及び変性マレイミド化合物等が挙げられる。前記変性マレイミド化合物としては、例えば、分子中の一部がアミン化合物で変性された変性マレイミド化合物、分子中の一部がシリコーン化合物で変性された変性マレイミド化合物、及び分子中の一部がアミン化合物及びシリコーン化合物で変性された変性マレイミド化合物等が挙げられる。
前記反応性化合物(B2)は、前記マレイミド化合物(B1)以外の反応性化合物であれば、特に限定されない。前記反応性化合物(B2)としては、例えば、不飽和二重結合を有する置換基により末端変性された不飽和二重結合変性ポリフェニレンエーテル化合物、アリル化合物、アクリレート化合物、メタクリレート化合物、及び、ポリブタジエン化合物及びスチレン化合物等のビニル化合物等が挙げられる。
また、前記硬化性樹脂(B)は、前記マレイミド化合物(B1)及び前記反応性化合物(B2)以外の硬化性樹脂(他の硬化性樹脂)を含んでいてもよい。前記他の硬化性樹脂としては、特に限定されないが、例えば、ベンゾオキサジン化合物、アセナフチレン化合物、シアン酸エステル化合物、及び活性エステル化合物等が挙げられる。前記他の硬化性樹脂としては、この中でも、ベンゾオキサジン化合物が好ましい。すなわち、前記硬化性樹脂(B)は、前記マレイミド化合物(B1)及び前記反応性化合物(B2)から選択される少なくとも1種を含み、ベンゾオキサジン化合物をさらに含むことが好ましい。なお、前記他の硬化性樹脂を含む場合の含有量は、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、5~20質量%であることが好ましい。
前記予備反応物(A)の含有量は、特に限定されないが、前記予備反応物(A)と前記硬化性樹脂(B)との合計100質量部に対して、15~80質量部であり、20~80質量部であることが好ましく、30~50質量部であることがより好ましい。すなわち、前記硬化性樹脂(B)の含有量は、特に限定されないが、前記予備反応物(A)と前記硬化性樹脂(B)との合計100質量部に対して、20~85質量部であり、20~80質量部であることが好ましく、50~70質量部であることがより好ましい。前記予備反応物(A)が少なすぎると、すなわち、前記硬化性樹脂(B)が多すぎると、比誘電率が高くなる等、優れた低誘電特性を維持しにくくなったり、デスミアがされにくくなる傾向がある。また、前記硬化性樹脂(B)が少なすぎると、すなわち、前記予備反応物(A)が多すぎると、デスミアがされやすくなりすぎる傾向がある。よって、前記予備反応物(A)及び前記硬化性樹脂(B)の各含有量が上記範囲内であると、優れた低誘電特性を維持しつつ、デスミアのされやすさ等を好適に調整することができる。
前記樹脂組成物は、無機充填材を含んでいてもよいし、無機充填材を含んでいなくてもよいが、無機充填材を含むことが好ましい。前記無機充填材は、樹脂組成物に含有される無機充填材として使用できる無機充填材であれば、特に限定されない。前記無機充填材としては、例えば、シリカ、アルミナ、酸化チタン、酸化マグネシウム及びマイカ等の金属酸化物、水酸化マグネシウム及び水酸化アルミニウム等の金属水酸化物、タルク、ホウ酸アルミニウム、硫酸バリウム、窒化アルミニウム、窒化ホウ素、チタン酸バリウム、無水炭酸マグネシウム等の炭酸マグネシウム、及び炭酸カルシウム等が挙げられる。この中でも、シリカ、水酸化マグネシウム及び水酸化アルミニウム等の金属水酸化物、酸化アルミニウム、窒化ホウ素、及びチタン酸バリウム等が好ましく、シリカがより好ましい。前記シリカは、特に限定されず、例えば、破砕状シリカ、球状シリカ、及びシリカ粒子等が挙げられる。
本実施形態に係る樹脂組成物は、本発明の効果を損なわない範囲で、必要に応じて、前記予備反応物(A)、及び前記硬化性樹脂(B)以外の成分(その他の成分)を含有してもよい。本実施形態に係る樹脂組成物に含有されるその他の成分としては、上述したような、無機充填材だけではなく、例えば、反応開始剤、硬化促進剤、触媒、重合遅延剤、重合禁止剤、分散剤、レベリング剤、シランカップリング剤、消泡剤、酸化防止剤、熱安定剤、帯電防止剤、紫外線吸収剤、染料や顔料、及び滑剤等の添加剤をさらに含んでもよい。
前記樹脂組成物は、後述するように、プリプレグを製造する際に用いられる。また、前記樹脂組成物は、樹脂付き金属箔及び樹脂付きフィルムに備えられる樹脂層、及び金属張積層板及び配線板に備えられる絶縁層を形成する際に用いられる。また、前記樹脂組成物は、上述したように、比誘電率が低い等の低誘電特性に優れた硬化物が得られる。このため、前記樹脂組成物は、アンテナ用の配線板やミリ波レーダ向けアンテナ基板等の高周波対応の配線板に備えられる絶縁層を形成するために好適に用いられる。すなわち、前記樹脂組成物は、高周波対応の配線板製造用として好適である。
前記樹脂組成物を製造する方法としては、特に限定されず、例えば、前記予備反応物(A)を得るための予備反応をさせた後、得られた予備反応物(A)、及び前記硬化性樹脂(B)を、所定の含有量となるように混合する方法等が挙げられる。また、有機溶媒を含むワニス状の組成物を得る場合は、後述する方法等が挙げられる。
図1は、本発明の実施形態に係るプリプレグ1の一例を示す概略断面図である。
図2は、本発明の実施形態に係る金属張積層板11の一例を示す概略断面図である。
図3は、本発明の実施形態に係る配線板21の一例を示す概略断面図である。
図4は、本実施の形態に係る樹脂付き金属箔31の一例を示す概略断面図である。
図5は、本実施の形態に係る樹脂付きフィルム41の一例を示す概略断面図である。
まず、各実施例及び比較例で用いる予備反応物(A)を調製した。
PPE:水酸基を分子内に有するポリフェニレンエーテル化合物(SABICイノベーティブプラスチックス社製のSA90、末端水酸基数2個、数平均分子量Mn1700、フェノール当量(水酸基当量)850g/eq)
(酸無水物(a2))
酸無水物1:4-メチルヘキサヒドロ無水フタル酸とヘキサヒドロ無水フタル酸との混合物(質量比70:30)(新日本理化株式会社製のリカシッドMH-700、単官能酸無水物、液状脂環式酸無水物、酸無水物基の官能基当量161~166g/eq、凝固点20℃)
酸無水物2:オクテニル無水コハク酸(新日本理化株式会社製のリカシッドOSA、単官能酸無水物、液状脂環式酸無水物、酸無水物基の官能基当量205~220g/eq、凝固点15℃以下)
まず、表1に記載の組成(質量部)で、ポリフェニレンエーテル化合物(a1)と酸無水物(a2)とを配合し、これをトルエンで固形分濃度が40質量%となるように希釈した。これをディスパーで攪拌及び混合した。そうすることによって、ポリフェニレンエーテル化合物(a1)と酸無水物(a2)とが反応し、予備反応物が得られた。ポリフェニレンエーテル化合物(a1)と酸無水物(a2)との反応条件は、ディスパーでの攪拌及び混合をしている際の、温度(反応温度)や攪拌及び混合時間(反応時間)を、上記の算出方法で得られた開環率が、できるだけ高く(少なくとも80%以上に)なるように調整した。具体的には、予備反応物A1及びA9を調製する際には、反応温度を80℃にし、反応時間を10時間にした。また、予備反応物A2、A3、A5~8、A10、及びA11を調製する際には、反応温度を80℃にし、反応時間を5時間にした。予備反応物A4を調製する際には、反応温度を80℃にし、反応時間を3時間にした。予備反応物A12、A13、及びA14を調製する際には、反応温度を20℃にし、反応時間を6時間にした。なお、前記予備反応物A1~A14における各開環率は、表1に示す。
本実施例において、プリプレグを調製する際に用いる各成分について説明する。
予備反応物(A)としては、上述した予備反応物A1~A14を用いた。なお、表2及び表3における予備反応物(A)の組成(質量部)は、固形分の質量を示す。
(PPE)
PPE:前記予備反応物の製造の際に用いたPPEと同じPPEを用いた。具体的には、水酸基を分子内に有するポリフェニレンエーテル化合物(SABICイノベーティブプラスチックス社製のSA90、末端水酸基数2個、数平均分子量Mn1700、フェノール当量(水酸基当量)850g/eq)を用いた。なお、このPPEを用いた例(表2において、PPEの組成の記載がある例:比較例2及び比較例3)は、上記予備反応を行っていない実施例である。
(酸無水物)
酸無水物1:前記予備反応物の製造の際に用いた酸無水物1と同じ酸無水物を用いた。具体的には、4-メチルヘキサヒドロ無水フタル酸とヘキサヒドロ無水フタル酸との混合物(質量比70:30)(新日本理化株式会社製のリカシッドMH-700、単官能酸無水物、液状脂環式酸無水物、酸無水物基の官能基当量161~166g/eq、凝固点20℃)を用いた。なお、この酸無水物1を用いた例(表2において、酸無水物1の組成の記載がある例:比較例3)は、上記予備反応を行っていない。
(反応性化合物:マレイミド化合物)
マレイミド化合物1:ビフェニルアラルキル型ビスマレイミド化合物(日本化薬株式会社製のMIR-3000-70MT、ビスマレイミド化合物、マレイミド基の官能基当量275g/eq)
マレイミド化合物2:3,3’-ジメチル-5,5’-ジエチル-4,4’-ジフェニルメタンビスマレイミド(日本化薬株式会社製のBMI-5100、ビスマレイミド化合物、マレイミド基の官能基当量221g/eq)
(反応性化合物:マレイミド化合物以外の反応性化合物)
変性PPE1:ビニルベンジル基(エテニルベンジル基)を分子末端に有するポリフェニレンエーテル化合物(スチレン変性ポリフェニレンエーテル)(三菱ガス化学株式会社製のOPE-1200、数平均分子量Mn1200、ビニルベンジル基の官能基当量670g/eq)
変性PPE2:メタクリロイル基を分子末端に有するポリフェニレンエーテル化合物(メタクリル変性ポリフェニレンエーテル)(Saudi Basic Industries Corporation製のSA9000、重量平均分子量Mw1700、メタクリロイル基の官能基当量850g/eq)
(ベンゾオキサジン化合物)
ベンゾオキサジン化合物1:3,3’-(メチレン-1,4-ジフェニレン)ビス(3,4-ジヒドロ-2H-1,3-ベンゾオキサジン)(四国化成工業株式会社製のP-d型ベンゾオキサジン化合物、ベンゾオキサジン基の官能基当量217g/eq)
ベンゾオキサジン化合物2:2,2-ビス(3,4-ジヒドロ-2H-3-フェニル-1,3-ベンゾオキサジン)メタン(四国化成工業株式会社製のF-a型ベンゾオキサジン化合物、ベンゾオキサジン基の官能基当量210g/eq)
(硬化促進剤)
2E4MZ:イミダゾール系硬化促進剤(2-エチル-4-メチルイミダゾール、四国化成工業株式会社製の2E4MZ)
(無機充填材)
無機充填材1:ビニルシランにより表面処理された球状シリカ(株式会社アドマテックス製のSC2300-SVJ)
無機充填材2:フェニルアミノシランにより表面処理された球状シリカ(株式会社アドマテックス製のSC2500-SXJ)
まず、無機充填材以外の成分を、表2及び表3に記載の組成(質量部)で、固形分濃度が60質量%となるように、メチルエチルケトン(MEK)に添加し、ディスパーで攪拌及び混合して、均一化させた。この均一化された混合物に無機充填材を、表2及び表3に記載の組成(質量部)で添加し、ディスパーで2時間攪拌及び混合して、均一化させた。そうすることによって、ワニス状の樹脂組成物(ワニス)が得られた。
まず、前記評価基板1(銅張積層板)の表面の銅箔をエッチングにより除去した。デスミア工程として、銅箔を除去した基板を、膨潤液(アトテックジャパン株式会社製のスウェリングディップセキュリガントP)に60℃で5分間浸漬させ、次いで、過マンガン酸カリウム水溶液(アトテックジャパン株式会社製のコンセントレートコンパクトCP)に80℃で10分間浸漬させた後、中和処理を行った。このようなデスミア工程の前後で、それぞれ基板の重量を測定し、デスミア工程による重量減少量(デスミア工程前の基板の重量-デスミア工程後の基板の重量)を算出し、さらに、その重量減少量から、1mm2当りの重量減少量(mg/mm2)を算出した。この1mm2当りの重量減少量から、以下のように評価した。
前記評価基板2(銅張積層板)から銅箔をエッチングにより除去したアンクラッド板を試験片とし、1GHzにおける比誘電率(Dk)を、空洞共振器摂動法で測定した。具体的には、Hewlett-Packard社製の「インピーダンス/マテリアルアナライザー4291A」を用い、IPC-TM-650 2.5.5.9に準じて、1GHzにおける前記アンクラッド板(評価基板2に備えられる絶縁層)の比誘電率(Dk)を測定した。なお、比誘電率が3.4以下であると良好である。
前記評価基板2(銅張積層板)から銅箔をエッチングにより除去したアンクラッド板を試験片とし、セイコーインスツルメンツ株式会社製の粘弾性スペクトロメータ「DMS6100」を用いて、前記アンクラッド板(評価基板2に備えられる絶縁層)のガラス転移温度(Tg)を測定した。このとき、曲げモジュールで周波数を10Hzとして動的粘弾性測定(DMA)を行い、昇温速度5℃/分の条件で室温から280℃まで昇温した際のtanδが極大を示す温度をガラス転移温度Tg(℃)とした。なお、ガラス転移温度が200℃以上であると良好である。
前記評価基板3を、260℃及び280℃に温度設定された乾燥機中に、それぞれ1時間放置した。そして、放置後の積層体に、膨れの発生の有無を目視で観察した。260℃の乾燥機中に放置すると、膨れの発生が確認されれば、「A(×)」と評価した。また、280℃の乾燥機中に放置すると、膨れの発生が確認されるが、260℃の乾燥機中に放置しても、膨れの発生が確認されなければ、「B(〇)」と評価した。また、280℃の乾燥機中に放置しても、膨れの発生が確認されなければ、「C(◎)」と評価した。なお、オーブン耐熱性で良好と判断されるのは、「B(〇)」及び「C(◎)」であり、「C(◎)」がより好ましい。
Claims (14)
- 水酸基を分子内に有するポリフェニレンエーテル化合物(a1)と、酸無水物基を分子内に有する酸無水物(a2)とを予め反応させた予備反応物(A)と、
不飽和二重結合を分子内に有する反応性化合物を含む硬化性樹脂(B)とを含み、
前記ポリフェニレンエーテル化合物(a1)の水酸基に対する前記酸無水物(a2)の酸無水物基の当量比が1.5以下であり、
前記硬化性樹脂(B)の含有量が、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、20~85質量部である樹脂組成物。 - 前記酸無水物(a2)が、環状の酸無水物基を分子内に1つ以上有する酸無水物を含む請求項1に記載の樹脂組成物。
- 前記予備反応物(A)は、1つ以上のエステル結合及びカルボキシル基を有する置換基により末端変性されたエステル・カルボキシル変性ポリフェニレンエーテル化合物を含む請求項1又は請求項2に記載の樹脂組成物。
- 前記硬化性樹脂(B)は、マレイミド化合物(B1)及び前記マレイミド化合物(B1)以外の反応性化合物(B2)を含む請求項1~3のいずれか1項に記載の樹脂組成物。
- 前記マレイミド化合物(B1)の含有量は、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、10~70質量部であり、
前記反応性化合物(B2)の含有量は、前記予備反応物(A)及び前記硬化性樹脂(B)の合計100質量部に対して、10~70質量部である請求項4に記載の樹脂組成物。 - 前記反応性化合物(B2)は、不飽和二重結合を有する置換基により末端変性された不飽和二重結合変性ポリフェニレンエーテル化合物、アリル化合物、アクリレート化合物、メタクリレート化合物、ポリブタジエン化合物、及びスチレン化合物からなる群から選ばれる少なくとも1種を含む請求項1~5のいずれか1項に記載の樹脂組成物。
- 前記硬化性樹脂(B)は、ベンゾオキサジン化合物をさらに含む請求項1~6のいずれか1項に記載の樹脂組成物。
- 無機充填材をさらに含む請求項1~7のいずれか1項に記載の樹脂組成物。
- 前記無機充填材は、シランカップリング剤で表面処理されている請求項8に記載の樹脂組成物。
- 請求項1~9のいずれか1項に記載の樹脂組成物又は前記樹脂組成物の半硬化物と、繊維質基材とを備えるプリプレグ。
- 請求項1~9のいずれか1項に記載の樹脂組成物又は前記樹脂組成物の半硬化物を含む樹脂層と、支持フィルムとを備える樹脂付きフィルム。
- 請求項1~9のいずれか1項に記載の樹脂組成物又は前記樹脂組成物の半硬化物を含む樹脂層と、金属箔とを備える樹脂付き金属箔。
- 請求項1~9のいずれか1項に記載の樹脂組成物の硬化物又は請求項10に記載のプリプレグの硬化物を含む絶縁層と、金属箔とを備える金属張積層板。
- 請求項1~9のいずれか1項に記載の樹脂組成物の硬化物又は請求項10に記載のプリプレグの硬化物を含む絶縁層と、配線とを備える配線板。
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JPH06179734A (ja) * | 1992-12-15 | 1994-06-28 | Asahi Chem Ind Co Ltd | 硬化性の樹脂組成物および硬化性複合材料 |
JPH07166049A (ja) | 1993-12-15 | 1995-06-27 | Asahi Chem Ind Co Ltd | 新規な硬化性ポリフェニレンエーテル系樹脂組成物および難燃化積層板 |
JP2017179035A (ja) * | 2016-03-29 | 2017-10-05 | パナソニックIpマネジメント株式会社 | 樹脂組成物、プリプレグ、金属張積層板、プリント配線板、及び樹脂付き金属箔 |
WO2019138992A1 (ja) * | 2018-01-09 | 2019-07-18 | 三菱瓦斯化学株式会社 | 樹脂組成物、プリプレグ、金属箔張積層板、樹脂複合シート、及びプリント配線板 |
JP2021055868A (ja) | 2019-09-27 | 2021-04-08 | 三菱パワー株式会社 | ボイラプラント、発電プラント、およびボイラプラントの制御方法 |
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- 2022-03-24 JP JP2023511100A patent/JPWO2022210227A1/ja active Pending
- 2022-03-24 US US18/284,386 patent/US20240092962A1/en active Pending
- 2022-03-24 WO PCT/JP2022/013786 patent/WO2022210227A1/ja active Application Filing
- 2022-03-24 EP EP22780441.6A patent/EP4317228A1/en active Pending
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JPH06179734A (ja) * | 1992-12-15 | 1994-06-28 | Asahi Chem Ind Co Ltd | 硬化性の樹脂組成物および硬化性複合材料 |
JPH07166049A (ja) | 1993-12-15 | 1995-06-27 | Asahi Chem Ind Co Ltd | 新規な硬化性ポリフェニレンエーテル系樹脂組成物および難燃化積層板 |
JP2017179035A (ja) * | 2016-03-29 | 2017-10-05 | パナソニックIpマネジメント株式会社 | 樹脂組成物、プリプレグ、金属張積層板、プリント配線板、及び樹脂付き金属箔 |
WO2019138992A1 (ja) * | 2018-01-09 | 2019-07-18 | 三菱瓦斯化学株式会社 | 樹脂組成物、プリプレグ、金属箔張積層板、樹脂複合シート、及びプリント配線板 |
JP2021055868A (ja) | 2019-09-27 | 2021-04-08 | 三菱パワー株式会社 | ボイラプラント、発電プラント、およびボイラプラントの制御方法 |
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