WO2015060418A1 - シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 - Google Patents
シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 Download PDFInfo
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- WO2015060418A1 WO2015060418A1 PCT/JP2014/078304 JP2014078304W WO2015060418A1 WO 2015060418 A1 WO2015060418 A1 WO 2015060418A1 JP 2014078304 W JP2014078304 W JP 2014078304W WO 2015060418 A1 WO2015060418 A1 WO 2015060418A1
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- 0 CC(*)(CC(C*(*)C1)(C2)*(*)O)CC12*(*)O Chemical compound CC(*)(CC(C*(*)C1)(C2)*(*)O)CC12*(*)O 0.000 description 1
- KLVGVFMCMTUOEU-UHFFFAOYSA-N CCCC(CC(C)(CC1CC2)C3)(C1C23c(cc1)cc(C)c1N=C=O)c(cc1)cc(C)c1N=C=O Chemical compound CCCC(CC(C)(CC1CC2)C3)(C1C23c(cc1)cc(C)c1N=C=O)c(cc1)cc(C)c1N=C=O KLVGVFMCMTUOEU-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0346—Organic insulating material consisting of one material containing N
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C261/00—Derivatives of cyanic acid
- C07C261/02—Cyanates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C265/00—Derivatives of isocyanic acid
- C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0638—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with at least three nitrogen atoms in the ring
- C08G73/065—Preparatory processes
- C08G73/0655—Preparatory processes from polycyanurates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/56—Ring systems containing bridged rings
- C07C2603/58—Ring systems containing bridged rings containing three rings
- C07C2603/70—Ring systems containing bridged rings containing three rings containing only six-membered rings
- C07C2603/74—Adamantanes
Definitions
- the present invention relates to a cyanate ester compound, a curable resin composition containing the compound and a cured product thereof, and a prepreg for a structural material, a sealing material, a fiber-reinforced composite material, and an adhesive containing the curable resin composition. .
- Cyanate ester compounds produce triazine rings upon curing, and due to their high heat resistance and excellent electrical properties, various functional polymer materials such as structural composite materials, adhesives, electrical insulating materials, and electrical and electronic parts are used. Widely used as a raw material.
- various physical properties required as a functional polymer material have become increasingly severe. Examples of such physical properties include flame retardancy, heat resistance, low thermal expansion coefficient, low water absorption, low dielectric constant, low dielectric loss tangent, weather resistance, chemical resistance and high fracture toughness. However, so far, these required physical properties have not always been satisfied.
- the functional polymer material may contain a halogen atom or a phosphorus atom.
- the halogen atom may generate a halogen-based gas that may cause environmental pollution during combustion, and lowers the insulation of the final product.
- phosphorus atoms often reduce required physical properties other than flame retardancy (heat resistance, moisture resistance, low water absorption, etc.). Therefore, it is also required to improve the flame retardancy without containing a halogen atom and a phosphorus atom in the functional polymer material.
- a monomer before curing which is a precursor of a functional polymer material
- a solvent such as methyl ethyl ketone
- a prepreg is produced by impregnating the fiber and drying it. Therefore, it is also required to improve solvent solubility for the monomer.
- a bifunctional cyanatophenyl type in which methylene group hydrogen bonding between cyanatophenyl groups is substituted with a specific alkyl group. It has been proposed to use a cyanate ester compound (1,1-bis (4-cyanatophenyl) isobutane) (see Patent Document 1). In addition, as an example of obtaining a cured product of a cyanate ester compound alone having low thermal expansion and flame retardancy, use of a cyanate ester compound having an aralkyl structure (see Patent Document 2) has been proposed.
- examples of obtaining a cured product of a cyanate ester compound having flame retardancy and heat resistance include isocyanuric acid skeleton-containing cyanate ester compounds (see Patent Document 3), triazine skeleton-containing cyanate ester compounds (patents) Reference 4), the use of a bifunctional cyanatophenyl type cyanate ester compound (see Patent Document 5) in which the hydrogen of a methylene group bonding cyanatophenyl groups is replaced with a biphenyl group, and bisphenol A type cyanide Combining an imide skeleton-containing cyanate ester compound with an acid ester compound has been proposed (see Patent Document 6).
- the required properties include, for example, properties such as low water absorption, moisture absorption heat resistance, flame retardancy, low dielectric constant, low dielectric loss tangent, low coefficient of thermal expansion, heat resistance and chemical resistance. However, so far, these required characteristics have not always been satisfied.
- cyanate ester compounds are known as printed wiring board resins having excellent heat resistance and electrical characteristics.
- resin compositions containing a bisphenol A-type cyanate ester compound and other thermosetting resins are widely used for printed wiring board materials and the like.
- the bisphenol A type cyanate ester compound has excellent properties such as electrical properties, mechanical properties, and chemical resistance.
- this cyanate ester compound may be insufficient in terms of low water absorption, moisture absorption heat resistance and flame retardancy. Therefore, various cyanate ester compounds having different structures have been studied for the purpose of further improving the properties.
- a novolac type cyanate ester compound As a resin having a structure different from that of the bisphenol A type cyanate ester compound, a novolac type cyanate ester compound is often used (see Patent Document 7).
- the novolac-type cyanate ester compound tends to be insufficiently cured, and there is a problem that the obtained cured product has a large water absorption rate and the moisture absorption heat resistance is lowered. Therefore, as a method for improving these problems, prepolymerization of a novolac-type cyanate ester compound and a bisphenol A-type cyanate ester compound has been proposed (see Patent Document 8).
- a halogenated compound is contained in a resin composition by using a fluorinated cyanate ester compound, or by mixing or prepolymerizing a cyanate ester compound and a halogenated compound.
- a resin composition by using a fluorinated cyanate ester compound, or by mixing or prepolymerizing a cyanate ester compound and a halogenated compound.
- the prepolymerization proposed in Patent Document 8 has improved curability but is still insufficient for improving the properties of low water absorption and moisture absorption heat resistance. There is a need for improvement in performance.
- Patent Documents 9 and 10 when halogen compounds are used, harmful substances such as dioxins may be generated during combustion, so that flame retardancy is improved without containing halogen compounds. Is required.
- the present invention has been made in view of the above circumstances, and is a novel cyanide having excellent solvent solubility, a low thermal expansion coefficient, and a cured product having excellent flame retardancy and heat resistance.
- An object is to provide an acid ester compound and a cured product thereof, a curable resin composition containing such a cyanate ester compound and a cured product thereof, and materials for various uses including the curable resin composition. .
- the present invention also provides a curable resin composition for a printed wiring board that can realize a printed wiring board that has not only low water absorption but also excellent moisture absorption heat resistance, a prepreg and a laminate sheet using the same, and the prepreg
- An object of the present invention is to provide a metal foil-clad laminate and a printed wiring board.
- the present inventors have found that a bifunctional cyanatophenyl type cyanate ester compound having an adamantane ring skeleton has excellent solvent solubility and excellent handleability, and curing using such a cyanate ester compound
- the curable resin composition has been found to have a low coefficient of thermal expansion and can realize a cured product having excellent flame retardancy and heat resistance, and has reached the present invention.
- the present inventors can realize a printed wiring board having low water absorption and excellent moisture absorption heat resistance by using such a curable resin composition containing a cyanate ester compound.
- the present invention has been found. That is, the present invention is as follows.
- a cyanate ester compound represented by the following formula (1) (In the formula, Ar represents an aromatic ring, each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group. N represents each independently an integer of 1 to 3, and m + n represents the aromatic ring and a hydrogen atom.
- R 2 is the same as the total number of hydrogen atoms in a monovalent aromatic group consisting of: R 2 is a hydrogen atom (where Ar is a benzene ring, n is all 1, R 1 is a hydrogen atom, and m is all 4 except that the cyanate group is bonded to the 4-position with respect to the adamantyl group) or an alkyl group having 1 to 4 carbon atoms, wherein R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- Ar represents a benzene ring
- n is 1
- R 2 represents a methyl group, an ethyl group, a propyl group, an isopropyl group, or a t-butyl group.
- the cyanate ester compound described in 1. [3] The cyanate ester compound according to [1], wherein Ar represents a benzene ring and n is 2 or 3.
- a curable resin composition comprising a cyanate ester compound represented by the following general formula (1).
- Ar represents an aromatic ring
- R 1 each independently represents a hydrogen atom, an alkyl group or an aryl group.
- N is an integer of 1 to 3
- m + n represents a monovalent atom bonded to Ar
- .R 2 is an integer indicating the total number of groups
- .R 3 represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- An adhesive comprising the curable resin composition according to any one of [5] to [9].
- the curable resin composition according to [15] further including an epoxy resin.
- the content of the cyanate ester compound represented by the formula (1) is 1 to 90 parts by mass with respect to 100 parts by mass of the resin solid content in the curable resin composition.
- the epoxy resin is one or more selected from the group consisting of a biphenyl aralkyl type epoxy resin, a naphthylene ether type epoxy resin, a polyfunctional phenol type epoxy resin, and a naphthalene type epoxy resin.
- a prepreg comprising a substrate and the curable resin composition according to any one of [15] to [21] impregnated or coated on the substrate.
- a metal foil-clad laminate including one or more prepregs according to [22] and a metal foil disposed on one or both surfaces of the prepreg.
- a laminated sheet comprising a support and a resin layer obtained by coating and drying the curable resin composition according to any one of [15] to [21] on the surface of the support.
- a printed wiring board including an insulating layer and a conductor layer formed on a surface of the insulating layer, wherein the insulating layer is curable according to any one of [15] to [21] A printed wiring board containing a resin composition.
- a novel cyanate ester compound and a cured product thereof having excellent solvent solubility, a low thermal expansion coefficient, and a cured product having excellent flame retardancy and heat resistance
- a curable resin composition containing such a cyanate ester compound, a cured product thereof, and materials for various uses including the curable resin composition.
- a curable resin composition for a printed wiring board that can realize a printed wiring board that has not only low water absorption but also excellent moisture absorption heat resistance, a prepreg and a laminate sheet using the same, and the A metal foil-clad laminate using a prepreg and a printed wiring board can be provided.
- FIG. 1 is a 1 H-NMR spectrum of a bisphenol compound AMTOH obtained in Example 1.
- 2 is a 1 H-NMR spectrum of the cyanate ester compound AMTCN obtained in Example 1.
- 2 is an FT-IR chart of the cyanate ester compound AMTCN obtained in Example 1.
- FIG. 2 is a 1 H-NMR spectrum of a bisphenol compound AMTcOH obtained in Example 2.
- 2 is a 1 H-NMR spectrum of the cyanate ester compound AMTcCN obtained in Example 2.
- 2 is an FT-IR chart of the cyanate ester compound AMTcCN obtained in Example 2.
- FIG. 2 is a 1 H-NMR spectrum of a bisphenol compound uAMTOH obtained in Example 3.
- 2 is a 1 H-NMR spectrum of the cyanate ester compound uAMTCN obtained in Example 3.
- 4 is an FT-IR chart of the cyanate ester compound uAMCN obtained in Example 3.
- the present embodiment a mode for carrying out the present invention (hereinafter simply referred to as “the present embodiment”) will be described in detail.
- the following embodiment is an exemplification for explaining the present invention, and the present invention is not limited to the present embodiment.
- the cyanate ester compound of this embodiment is represented by the following formula (1).
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3, and m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom (provided that Ar is a benzene ring, n is all 1, R 1 is a hydrogen atom, and m is all 4 and the cyanate group is bonded to the adamantyl group at the 4-position. Or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- the curable resin composition of this embodiment contains the cyanate ester compound represented by the said Formula (1).
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3, and m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- a cured product obtained by curing the curable resin composition, a prepreg for a structural material including the curable resin composition, a sealing material, a fiber reinforced composite material, and an adhesive Agents are also provided.
- the cyanate ester compound of this embodiment is represented by the above formula (1).
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3, and m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom (provided that Ar is a benzene ring, n is all 1, R 1 is a hydrogen atom, and m is all 4 and the cyanate group is bonded to the adamantyl group at the 4-position. Or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- Ar may be any of a single ring, a condensed ring, and a ring assembly as long as it is an aromatic ring, and is not particularly limited, but is preferably a group consisting of a benzene ring, a naphthalene ring, and two benzene rings in a single bond. It is more selected.
- R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- the alkyl group is preferably a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms, more preferably a linear or branched alkyl group having 1 to 8 carbon atoms, still more preferably carbon. Examples thereof include linear or branched alkyl groups of 1 to 4, such as methyl group, ethyl group, propyl group, isopropyl group and t-butyl group, but are not particularly limited thereto.
- examples of the aryl group for R 1 include, but are not limited to, a phenyl group, a p-tolyl group, a naphthyl group, and an anthryl group.
- R 1 is preferably each independently a hydrogen atom or a linear alkyl group having 1 to 4 carbon atoms.
- n is preferably independently from 1 to 2, more preferably 1 in each case.
- R 2 has a carbon number of 1 when Ar is a benzene ring, n is 1, R 1 is a hydrogen atom, and m is 4 and the cyanate group is bonded to the adamantyl group at the 4-position. In other cases, it represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. Examples of the alkyl group include, but are not limited to, a methyl group, an ethyl group, a propyl group, an isopropyl group, and a t-butyl group.
- Ar when Ar is a benzene ring, it is preferably a methyl group or an ethyl group, and when Ar is an aromatic ring other than a benzene ring, it is preferably a hydrogen atom, a methyl group or an ethyl group.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and examples of the alkyl group include, but are not limited to, a methyl group, an ethyl group, a propyl group, an isopropyl group, and a t-butyl group. Among these, a hydrogen atom, a methyl group, and an ethyl group are preferable.
- Ar represents a benzene ring
- n is 1
- R 2 is a methyl group, an ethyl group, a propyl group, an isopropyl group, or t-butyl.
- a cyanate ester compound in which Ar represents a benzene ring and n is 2 or 3
- a cyanate ester compound in which Ar represents an aromatic ring other than a benzene ring is 2 or 3
- cyanate ester compound of the present embodiment examples include 1,3-bis (4-cyanatophenyl) -5-methyladamantane and 1,3-bis (4-cyanatophenyl) -5-ethyl.
- the method to obtain the cyanate ester compound of this embodiment is not specifically limited, For example, it can obtain by cyanating the hydroxy group which the phenolic compound represented by following formula (2) has.
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3
- m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom (provided that Ar is a benzene ring, n is all 1, R 1 is a hydrogen atom, and m is all 4 and the hydroxy group is bonded to the adamantyl group at the 4-position. Or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- the phenol compound represented by the above formula (2) can be obtained by the methods described in, for example, US Pat. No. 3,594,427, Japanese Patent No. 4152501, Japanese Patent No. 4115269, and the like. Specific examples include a method of reacting dibromodimethyladamantane and phenol, a method of reacting adamantanediol and phenol under an acid catalyst, a method of reacting adamantanediol and a substituted phenol under an acid catalyst, and the like.
- the method for cyanating the hydroxy group of the phenol compound represented by the above formula (2) is not particularly limited, and a known method can be applied. Specifically, a method in which a phenol compound and cyanogen halide are reacted in a solvent in the presence of a basic compound, and in a solvent in the presence of a base, the cyanogen halide is always present in excess in excess of the base. A method of reacting a phenol compound with cyanogen halide (see US Pat. No. 3,553,244), or using a tertiary amine as a base in excess of cyanogen halide in the presence of a solvent.
- a cyanide halide is dropped, or a cyanide halide and a tertiary amine are added dropwise (see Japanese Patent No. 3319061), a continuous plug flow method, a phenol compound , A method of reacting a trialkylamine and a cyanogen halide (see Japanese Patent No. 3905559), phenol A method of treating a tert-ammonium halide produced as a by-product when a compound and cyanogen halide are reacted in a non-aqueous solution in the presence of a tert-amine with a cation and anion exchange pair (see Japanese Patent No.
- a tertiary amine and a cyanogen halide are simultaneously added to and reacted with a phenol compound in the presence of water and a solvent that can be separated, and then washed with water and separated from the resulting solution.
- a method of precipitation purification using a poor solvent for tertiary alcohols or hydrocarbons see Japanese Patent No. 299954
- a phenol compound, a cyanogen halide, and a tertiary amine are mixed with water and an organic solvent.
- the cyanate ester compound of this embodiment is obtained by a method of reacting in a phase solvent under acidic conditions (see Japanese Patent No. 5026727). It can be.
- the phenol compound represented by the formula (2) and cyanogen halide in the presence of a basic compound in a solvent, the phenol compound as a reaction substrate is added to a cyanogen halide solution and After dissolving in any of the basic compound solutions in advance, the cyanogen halide solution and the basic compound solution are brought into contact with each other.
- (A) a method of pouring the basic compound solution into the stirred cyanogen halide solution, and (B) stirring and mixing
- Examples thereof include a method in which a cyan halide solution is poured into the basic compound solution prepared, and a method in which (C) the cyan halide solution and the basic compound solution are continuously or alternately supplied.
- the method (A) is preferable.
- the contact method between the cyanogen halide solution and the basic compound solution may be either a semi-batch format or a continuous flow format.
- the reaction can be completed without leaving the hydroxy group of the phenolic compound, and a higher purity cyanate ester compound can be obtained in a high yield. It is preferable to divide and drop the basic compound.
- the number of divisions is not particularly limited, but is preferably 1 to 5 times. Further, the type of basic compound may be the same or different for each division.
- Examples of the cyanogen halide include cyanogen chloride and cyanogen bromide.
- cyanide halide a cyanide halide obtained by a known production method such as a method of reacting hydrogen cyanide or metal cyanide with halogen may be used, or a commercially available product may be used. Further, hydrogen cyanide or a reaction solution containing cyanogen halide obtained by reacting metal cyanide and halogen can be used as it is.
- the amount of cyanogen halide used with respect to the phenol compound is 0.5 to 5 mol, preferably 1.0 to 3.5 mol, per mol of the hydroxy group of the phenol compound. The reason is to increase the yield of the cyanate ester compound without leaving unreacted phenolic compound.
- Solvents used in the cyanogen halide solution include ketone solvents such as acetone, methyl ethyl ketone methyl isobutyl ketone, cyclohexanone and cyclopentanone, aliphatic solvents such as n-hexane, cyclohexane and isooctane, and aromatics such as benzene, toluene and xylene.
- ketone solvents such as acetone, methyl ethyl ketone methyl isobutyl ketone, cyclohexanone and cyclopentanone
- aliphatic solvents such as n-hexane, cyclohexane and isooctane
- aromatics such as benzene, toluene and xylene.
- ether solvents such as diethyl ether, dimethyl cellosolve, diglyme, tetrahydrofuran, methyltetrahydrofuran, dioxane and tetraethylene glycol dimethyl ether, halogenation such as dichloromethane, chloroform, carbon tetrachloride, dichloroethane, trichloroethane, chlorobenzene and bromobenzene Hydrocarbon solvents, methanol, ethanol, isopropanol, methylsolvosolve and propylene glycol monomer Alcohol solvents such as ether, aprotic polar solvents such as N, N-dimethylformamide, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidone and dimethyl sulfoxide, nitrile solvents such as acetonitrile and benzonitrile, nitromethane And nitro solvents such as nitrobenzene, ester solvents such as
- any of organic and inorganic bases can be used, and one of them can be used alone or in combination of two or more.
- organic bases include trimethylamine, triethylamine, tri-n-butylamine, triamylamine, diisopropylethylamine, diethyl-n-butylamine, methyldi-n-butylamine, methylethyl-n-butylamine, dodecyldimethylamine, tribenzylamine , Triethanolamine, N, N-dimethylaniline, N, N-diethylaniline, diphenylmethylamine, pyridine, diethylcyclohexylamine, tricyclohexylamine, 1,4-diazabicyclo [2.2.2] octane, 1,8 Tertiary amines such as -diazabicyclo [5.4.0] -7-undecene and 1,5-diazabicyclo [4.3.0] -5-nonene are preferred.
- the amount of the organic base used is preferably 0.1 to 8 mol, more preferably 1.0 to 3.5 mol with respect to 1 mol of the hydroxy group of the phenol compound. The reason is to increase the yield of the cyanate ester compound without leaving unreacted phenolic compound.
- the inorganic base is preferably an alkali metal hydroxide.
- alkali metal hydroxide include, but are not limited to, sodium hydroxide, potassium hydroxide, and lithium hydroxide that are generally used industrially.
- Sodium hydroxide is particularly preferable because it can be obtained at low cost.
- the amount of the inorganic base used is preferably 1.0 to 5.0 mol, more preferably 1.0 to 3.5 mol, per 1 mol of the hydroxy group of the phenol compound. The reason is to increase the yield of the cyanate ester compound without leaving unreacted phenolic compound.
- the basic compound in the reaction for obtaining the cyanate ester compound of this embodiment, can be used as a solution dissolved in a solvent as described above.
- a solvent an organic solvent or water can be used.
- the amount of the solvent used in the basic compound solution is preferably 0.1 to 100 parts by mass, more preferably 0.5 to 100 parts by mass with respect to 1 part by mass of the phenol compound when the phenol compound is dissolved in the basic compound solution. 50 parts by mass.
- the amount of the solvent used is preferably 0.1 to 100 parts by mass, more preferably 0.25, relative to 1 part by mass of the basic compound. ⁇ 50 parts by mass.
- the organic solvent for dissolving the basic compound is preferably used when the basic compound is an organic base, for example, a ketone solvent such as acetone, methyl ethyl ketone, and methyl isobutyl ketone, and an aromatic solvent such as benzene, toluene, and xylene.
- a ketone solvent such as acetone, methyl ethyl ketone, and methyl isobutyl ketone
- an aromatic solvent such as benzene, toluene, and xylene.
- Ether solvents such as diethyl ether, dimethyl cellosolve, diglyme, tetrahydrofuran, methyltetrahydrofuran, dioxane and tetraethylene glycol dimethyl ether, halogenated hydrocarbons such as dichloromethane, chloroform, carbon tetrachloride, dichloroethane, trichloroethane, chlorobenzene and bromobenzene Solvents, alcohol solvents such as methanol, ethanol, isopropanol, methyl sorb and propylene glycol monomethyl ether, N, N-di Aprotic polar solvents such as tilformamide, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidone and dimethyl sulfoxide, nitrile solvents such as acetonitrile and benzonitrile, nitro solvents such as nitromethane and nitrobenzene, ethyl acetate and
- the water for dissolving the basic compound is preferably used when the basic compound is an inorganic base, and is not particularly limited, and may be tap water, distilled water, or deionized water. . From the viewpoint of efficiently obtaining the desired cyanate ester compound, distilled water and deionized water with less impurities are preferred.
- a catalytic amount of an organic base as a surfactant from the viewpoint of securing a sufficient reaction rate.
- tertiary amines with few side reactions are preferred.
- the tertiary amine may be any of alkylamine, arylamine and cycloalkylamine.
- trimethylamine, triethylamine, tri-n-butylamine and diisopropylethylamine are more preferable, and triethylamine is particularly preferable from the viewpoint of solubility in water and the ability to obtain the target product with higher yield. These are used singly or in combination of two or more.
- the total amount of the solvent used in the cyanate formation step for obtaining the cyanate ester compound of the present embodiment is 2.5 to 100 parts by mass with respect to 1 part by mass of the phenol compound, so that the phenol compound is more uniformly dissolved. This is preferable from the viewpoint of more efficiently producing a cyanate ester compound.
- the pH of the reaction solution is not particularly limited, but it is preferable to carry out the reaction while maintaining a pH of less than 7. By suppressing the pH to less than 7, production of by-products such as a polymer of imide carbonate and cyanate ester compound is further suppressed, and the cyanate ester compound can be more efficiently produced.
- an acid to the reaction solution. More preferably, an acid is added to the cyanogen halide solution immediately before the cyanation step, and an acid is added to the reaction system while appropriately measuring the pH of the reaction solution with a pH meter during the reaction. It is preferable to maintain the state.
- the acid used in that case include inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, and phosphoric acid, and organic acids such as acetic acid, lactic acid, and propionic acid.
- the reaction temperature in the cyanation step for obtaining the cyanate ester of this embodiment is as follows: by-products such as imide carbonate, a polymer of cyanate ester compound, and dialkylcyanoamide, condensation of the reaction solution, and cyanogen halide
- cyanide chloride it is preferably ⁇ 20 to + 50 ° C., more preferably ⁇ 15 to 15 ° C., and further preferably ⁇ 10 to 10 ° C. from the viewpoint of suppressing the volatilization of cyan chloride.
- the reaction pressure in the cyanation step for obtaining the cyanate ester of the present embodiment may be normal pressure or pressurization (that is, pressure higher than normal pressure). If necessary, an inert gas such as nitrogen, helium and argon may be vented into the reaction system.
- reaction time is not particularly limited, but the pouring time when the contact method is (A) and (B) and the contact time when (C) are preferably 1 minute to 20 hours, and 3 minutes to 10 hours. Time is more preferred. Thereafter, it is preferable to stir while maintaining the reaction temperature for 10 minutes to 10 hours.
- the target cyanate ester compound can be obtained more economically and more industrially by setting the reaction conditions in the above range.
- the progress of the reaction in the cyanation step can be analyzed by liquid chromatography or IR spectrum method. Volatile components such as by-product dicyan and dialkylcyanoamide can be analyzed by gas chromatography.
- the intended cyanate ester compound can be isolated by carrying out ordinary post-treatment operations and, if desired, separation / purification operations. Specifically, an organic solvent phase containing a cyanate ester compound is separated from the reaction solution, washed with water, concentrated, precipitated or crystallized, or washed with water and then replaced with a solvent. At the time of washing, in order to remove excess amines, a method using an acidic aqueous solution such as dilute hydrochloric acid can be employed. In order to remove water from the sufficiently washed reaction solution, it can be dried by a general method using sodium sulfate, magnesium sulfate or the like.
- the organic solvent is distilled off by heating to a temperature of 90 ° C. or lower under reduced pressure.
- a solvent having low solubility can be used.
- a method in which an ether solvent, a hydrocarbon solvent such as hexane, or an alcohol solvent is dropped or back-dropped into the reaction solution can be employed.
- a method of washing the concentrate of the reaction solution and the precipitated crystals with an ether solvent, a hydrocarbon solvent such as hexane, or an alcohol solvent can be employed. .
- the crystals obtained by concentrating the reaction solution can be dissolved again and then recrystallized. Crystallization may be performed by simply concentrating or cooling the reaction solution.
- the obtained cyanate ester compound can be identified by a known method such as NMR.
- the purity of the cyanate ester compound can be analyzed by liquid chromatography or IR spectroscopy.
- Byproducts such as dialkylcyanoamide in the cyanate ester compound and volatile components such as residual solvent can be quantitatively analyzed by gas chromatography.
- Halogen compounds remaining in the cyanate ester compound can be identified by a liquid chromatograph mass spectrometer, and can be quantitatively analyzed by potentiometric titration using a silver nitrate solution or ion chromatography after decomposition by a combustion method. .
- the polymerization reactivity of the cyanate ester compound can be evaluated by gelation time by a hot plate method or a torque measurement method.
- the curable resin composition of the present embodiment includes the cyanate ester compound of the present embodiment, and may include a cyanate ester compound represented by the following formula (1).
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3, and m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- the cyanate ester compound contained in the curable resin composition of the present embodiment is the above formula (1), wherein Ar represents a benzene ring, n is 1, and R 2 is a methyl group, an ethyl group, or a propyl group.
- Ar, R 1 , n, m and R 3 in the above formula (1) have the same meaning as in the cyanate ester compound of the present embodiment. It is.
- alkyl group for R 2 include, but are not limited to, a methyl group, an ethyl group, a propyl group, an isopropyl group, and a t-butyl group.
- Ar when Ar is a benzene ring, it is preferably a methyl group or an ethyl group, and when Ar is an aromatic ring other than a benzene ring, it is preferably a hydrogen atom, a methyl group or an ethyl group.
- specific examples of the cyanate ester compound contained in the curable resin composition of the present embodiment include those exemplified above as the cyanate ester compound of the present embodiment and 1,3-bis (4-cyanato). Phenyl) adamantane.
- This curable resin composition has a cyanate ester compound other than the cyanate ester compound (hereinafter referred to as “another cyanate ester compound”), an epoxy resin, and an oxetane resin within a range in which desired characteristics are not impaired.
- a benzoxazine compound, and one or more selected from the group consisting of compounds having a polymerizable unsaturated group may be contained.
- one or more selected from the group consisting of a cyanate ester compound, an epoxy resin, an oxetane resin, and a compound having a polymerizable unsaturated group Is preferred.
- the other cyanate ester compound is not particularly limited as long as it is a compound having an aromatic moiety substituted with at least one cyanate group in the molecule.
- Ar 1 represents a benzene ring, a naphthalene ring or a single bond of two benzene rings, and when there are a plurality of them, they may be the same or different.
- Each Ra is independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkyl group having 1 to 6 carbon atoms and an alkyl group having 6 to 12 carbon atoms.
- a group in which an aryl group is mixed is shown.
- the aromatic ring in Ra may have a substituent, and the substituent in Ar 1 and Ra can be selected at any position.
- Each p is independently an integer of 1 to 3.
- q is 4-p when Ar 1 is a benzene ring, 6-p when Ar 1 is a naphthalene ring, and 8-p when two benzene rings are single-bonded.
- t represents an integer of 0 to 50, but the other cyanate ester compound may be a mixture of compounds having different t.
- X represents a single bond, a divalent organic group having 1 to 20 carbon atoms (a hydrogen atom may be substituted with a hetero atom), a divalent organic group having 1 to 10 nitrogen atoms (for example, —N—R —N— (wherein R represents an organic group)), a carbonyl group (—CO—), a carboxy group (—C ( ⁇ O) O—), a carbonyl dioxide group (—OC ( ⁇ O) O— ), A sulfonyl group (—SO 2 —), a divalent sulfur atom or an oxygen atom.
- the alkyl group in Ra in the formula (3) may have any of a linear or branched chain structure and a cyclic structure (for example, a cycloalkyl group).
- alkyl group in formula (3) and the hydrogen atom in the aryl group in Ra may be substituted with a halogen atom such as fluorine or chlorine atom, an alkoxy group such as methoxy group or phenoxy group, or a cyano group. Good.
- alkyl group examples include methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, 1-ethylpropyl group, 2,2-dimethylpropyl group.
- aryl group examples include phenyl group, xylyl group, mesityl group, naphthyl group, phenoxyphenyl group, ethylphenyl group, o-, m- or p-fluorophenyl group, dichlorophenyl group, dicyanophenyl group, trifluorophenyl.
- alkoxy group examples include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, an n-butoxy group, an isobutoxy group, and a tert-butoxy group.
- divalent organic group having 1 to 20 carbon atoms in X of formula (3) include alkylene groups such as methylene group, ethylene group, trimethylene group and propylene group, cyclopentylene group, cyclohexylene group and trimethyl.
- divalent organic groups having an aromatic ring such as a cycloalkylene group such as cyclohexylene group, biphenylylmethylene group, dimethylmethylene-phenylene-dimethylmethylene group, fluorenediyl group, and phthalidodiyl group.
- the hydrogen atom in the divalent organic group may be substituted with a halogen atom such as a fluorine atom and a chlorine atom, an alkoxy group such as a methoxy group and a phenoxy group, or a cyano group.
- Examples of the divalent organic group having 1 to 10 nitrogen atoms in X in the formula (3) include an imino group and a polyimide group.
- Ar 2 represents a benzenetetrayl group, a naphthalenetetrayl group or a biphenyltetrayl group, and when u is 2 or more, they may be the same as or different from each other.
- Rb, Rc, Rf and Rg are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, a trifluoromethyl group, or an aryl having at least one phenolic hydroxy group Indicates a group.
- Rd and Re each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a hydroxy group.
- u represents an integer of 0 to 5.
- X in Formula (3) the bivalent group represented by a following formula is mentioned.
- j represents an integer of 4 to 7 in the above formula.
- Ar 2 in the formula (4) include a benzenetetrayl group in which two carbon atoms shown in the formula (4) are bonded to the 1,4-position or the 1,3-position, and the two carbon atoms. Are bonded to the 4,4′-position, 2,4′-position, 2,2′-position, 2,3′-position, 3,3′-position, or 3,4′-position, and the above 2 And naphthalenetetrayl groups in which one carbon atom is bonded to the 2,6-position, 1,5-position, 1,6-position, 1,8-position, 1,3-position, or 1,4-position.
- cyanate ester compound represented by the above formula (3) examples include cyanatobenzene, 1-cyanato-2-, 1-cyanato-3-, or 1-cyanato-4-methylbenzene, 1-cyanato. -2-, 1-cyanato-3-, or 1-cyanato-4-methoxybenzene, 1-cyanato-2,3-, 1-cyanato-2,4-, 1-cyanato-2,5-, 1- Cyanato-2,6-, 1-cyanato-3,4- or 1-cyanato-3,5-dimethylbenzene, cyanatoethylbenzene, cyanatobutylbenzene, cyanatooctylbenzene, cyanatononylbenzene, 2- (4 -Cyanatophenyl) -2-phenylpropane (cyanate of 4- ⁇ -cumylphenol), 1-cyanato-4-cyclohexylbenzene, 1-cyanato-4-vinylbenzene, -Cyanato-2
- Phenol aralkyl resins, cresol aralkyl resins, naphthol aralkyl resins, and biphenyl aralkyl resins are acidic catalysts.
- epoxy resin generally known compounds can be used as long as they are compounds having two or more epoxy groups in one molecule.
- epoxy resins include bisphenol A type epoxy resins, bisphenol E type epoxy resins, bisphenol F type epoxy resins, bisphenol S type epoxy resins, bisphenol A novolac type epoxy resins, biphenyl type epoxy resins, phenol novolac type epoxy resins, and cresol novolacs.
- Type epoxy resin xylene novolac type epoxy resin, naphthalene type epoxy resin, anthracene type epoxy resin, trifunctional phenol type epoxy resin, tetrafunctional phenol type epoxy resin, triglycidyl isocyanurate, glycidyl ester type epoxy resin, alicyclic epoxy resin , Dicyclopentadiene novolac epoxy resin, biphenyl novolac epoxy resin, phenol aralkyl novolac epoxy resin, naphtha Aralkyl novolak type epoxy resin, aralkyl novolak type epoxy resin, biphenyl aralkyl type epoxy resin, naphthol aralkyl type epoxy resin, dicyclopentadiene type epoxy resin, polyol type epoxy resin and alicyclic epoxy resin, or halides thereof Is mentioned.
- These epoxy resins can be used alone or in combination.
- oxetane resin generally known oxetane resins can be used.
- the oxetane resin include alkyl oxetanes such as oxetane, 2-methyloxetane, 2,2-dimethyloxetane, 3-methyloxetane, and 3,3-dimethyloxetane, 3-methyl-3-methoxymethyloxetane, 3,3
- oxetane resin include alkyl oxetanes such as oxetane, 2-methyloxetane, 2,2-dimethyloxetane, 3-methyloxetane, and 3,3-dimethyloxetane, 3-methyl-3-methoxymethyloxetane, 3,3
- OXT-101 trade name of Toagosei Co., Ltd.
- OXT- 121 trade name of Toagosei Co., Ltd.
- the benzoxazine compound is preferably a compound having two or more dihydrobenzoxazine rings in one molecule, and generally known compounds can be used.
- the benzoxazine compound include BA-BXZ (trade name, manufactured by Konishi Chemical) which is a bisphenol A-type benzoxazine, BF-BXZ (trade name, manufactured by Konishi Chemical), which is a bisphenol F-type benzoxazine, and bisphenol S-type benzoxazine.
- BA-BXZ trade name, manufactured by Konishi Chemical
- BF-BXZ trade name, manufactured by Konishi Chemical
- BS-BXZ trade name, manufactured by Konishi Chemical
- phenolphthalein-type benzoxazine can be used alone or in combination.
- the compound having a polymerizable unsaturated group generally known compounds can be used.
- the compound having a polymerizable unsaturated group include vinyl compounds such as ethylene, propylene, styrene, divinylbenzene and divinylbiphenyl, methyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl ( Monovalents such as (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate and dipentaerythritol hexa (meth) acrylate
- epoxy (meth) acrylates such as (meth) acrylates of polyhydric alcohol, bisphenol A type epoxy (meth) acrylate and bisphenol F type epoxy (meth) acrylate Over preparative
- a compound that acts as a polymerization catalyst for a cyanate ester compound, an epoxy resin, an oxetane resin, and a compound having a polymerizable unsaturated group can be blended.
- the polymerization catalyst include metal salts such as zinc octylate, zinc naphthenate, cobalt naphthenate, copper naphthenate and acetylacetone iron, phenol compounds such as octylphenol and nonylphenol, and alcohols such as 1-butanol and 2-ethylhexanol.
- peroxides such as epoxy-imidazole adduct compounds, benzoyl peroxide, p-chlorobenzoyl peroxide, di-t-butyl peroxide, diisopropyl peroxycarbonate and di-2-ethylhexyl peroxycarbonate, and azo
- An azo compound such as bisisobutyronitrile may be used as a polymerization catalyst. Commercially available polymerization catalysts may be used.
- Examples of commercially available products include Amicure-PN23 (trade name, manufactured by Ajinomoto Fine Techno Co., Ltd.), Novacure HX-3721 (trade name, manufactured by Asahi Kasei Co., Ltd.), and Fujicure-FX1000 (Fujitsu). Chemical name manufactured by Kasei Kogyo Co., Ltd.). These polymerization catalysts can be used alone or in combination.
- the curable resin composition of the present embodiment includes a thermoplastic resin, an inorganic filler, a curing catalyst, a curing accelerator, a coloring pigment, an antifoaming agent, a surface conditioner, a flame retardant, and an ultraviolet absorber as necessary.
- a known additive such as an agent may be contained.
- the curable resin composition of this embodiment may contain the solvent as needed.
- the inorganic filler Generally known materials can be used as the inorganic filler.
- the inorganic filler include talc, fired clay, unfired clay, mica, E glass, A glass, NE glass, C glass, L glass, D glass, S glass, M glass G20, and short glass fiber (E glass).
- Silicates such as hollow glass and spherical glass, titanium oxide, alumina, silica, fused silica, zinc oxide, magnesium oxide, Oxides such as zirconium oxide and molybdenum oxide, carbonates such as calcium carbonate, magnesium carbonate and hydrotalcite, hydroxides such as aluminum hydroxide, magnesium hydroxide and calcium hydroxide, barium sulfate, calcium sulfate and calcium sulfite Sulfate or sulfite, zinc borate, barium metaborate, aluminum borate Borates such as calcium borate and sodium borate, nitrides such as aluminum nitride, boron nitride, silicon nitride and carbon nitride, titanates such as strontium titanate and barium titanate, boehmite, zinc molybdate, silicone composite Examples thereof include powder and silicone resin powder. These inorganic fillers can be used individually by
- solvent generally known solvents can be used.
- the solvent include ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone, cellosolve solvents such as propylene glycol monomethyl ether and propylene glycol monomethyl ether acetate, methyl lactate, methyl acetate, ethyl acetate, butyl acetate, Ester solvents such as isoamyl acetate, ethyl lactate, methyl methoxypropionate, and methyl hydroxyisobutyrate, alcohol solvents such as methanol, ethanol, isopropanol, and 1-ethoxy-2-propanol, toluene, xylene, and anisole An aromatic hydrocarbon etc. are mentioned.
- These solvent can be used individually by 1 type or in mixture of 2 or more types.
- the curable resin composition in the present embodiment includes the above-described cyanate ester compound and, if necessary, other cyanate ester compounds, epoxy resins, oxetane resins, benzoxazine compounds, and / or polymerizable unsaturated compounds.
- a compound having a group and various additives are mixed together with a solvent using a known mixer such as a high speed mixer, a nauter mixer, a ribbon blender, a kneader, an intensive mixer, a universal mixer, a dissolver, and a static mixer.
- a known mixer such as a high speed mixer, a nauter mixer, a ribbon blender, a kneader, an intensive mixer, a universal mixer, a dissolver, and a static mixer.
- the mixing method of the cyanate ester compound, other resin, various additives and solvent during mixing is not particularly limited.
- the curable resin composition according to the present embodiment can be cured by being cured by heat or light.
- the cured product can be obtained, for example, by melting the curable resin composition or dissolving it in a solvent, then pouring it into a mold and curing it under normal conditions.
- the curing temperature is preferably in the range of 120 ° C. to 300 ° C. from the viewpoint of further curing and further suppressing deterioration of the cured product.
- the structural material prepreg of the present embodiment includes a base material and the curable resin composition impregnated or coated on the base material.
- the prepreg for a structural material can be produced by impregnating or applying the curable resin composition on an inorganic and / or organic fiber substrate and further drying as necessary.
- groups such as inorganic fiber equipments, such as glass fiber base materials, such as a glass woven fabric and a glass nonwoven fabric, a polyamide resin fiber, an aromatic polyamide resin fiber, and a wholly aromatic polyamide resin fiber Synthetic fiber base composed of resin fibers, polyester resin fibers, polyester resin fibers such as aromatic polyester resin fibers and wholly aromatic polyester resin fibers, polyimide resin fibers, woven or non-woven fabrics mainly composed of fluororesin fibers, etc.
- examples thereof include organic fiber base materials such as paper base materials mainly composed of wood, kraft paper, cotton linter paper, mixed paper of linter and kraft pulp.
- the glass which comprises the said glass fiber base material is not specifically limited, For example, E glass, C glass, A glass, S glass, D glass, NE glass, T glass, and H glass are mentioned.
- the method for producing the structural material prepreg is not particularly limited, and generally known methods can be applied as appropriate.
- a resin varnish is prepared using the curable resin composition described above, a method of immersing the substrate in the resin varnish, a method of applying the resin varnish to the substrate with various coaters, a method of spraying by spraying, etc.
- a prepreg can be produced.
- the method of immersing the base material in the resin varnish is preferable. Thereby, the impregnation property of the resin composition with respect to a base material can be improved.
- a normal impregnation coating equipment can be used.
- a method of manufacturing a prepreg by impregnating an inorganic and / or organic fiber base material with a resin composition varnish, drying, and B-staging can be applied.
- the curable resin composition of the present embodiment can also be used for metal foil-clad laminates and multilayer boards.
- a method for producing these laminated plates and the like generally known ones can be appropriately applied and are not particularly limited.
- a metal foil-clad laminate can be obtained by laminating the above-described structural material prepreg and metal foil, followed by heat and pressure molding.
- the heating temperature is not particularly limited, but is usually preferably 65 to 300 ° C, more preferably 120 to 270 ° C.
- the pressure to be applied is not particularly limited, but is usually preferably 2 to 5 MPa, more preferably 2.5 to 4 MPa.
- the sealing material of the present embodiment includes the curable resin composition of the present embodiment, and can be manufactured using the curable resin composition.
- a method for producing the sealing material generally known methods can be appropriately applied and are not particularly limited.
- the curable resin composition is mixed with various additives or solvents that are known to be used when producing a sealing material by using a known mixer.
- the material can be manufactured.
- the addition method of curable resin composition, various additives, and a solvent in the case of mixing can apply a generally well-known thing suitably, and is not specifically limited.
- the fiber-reinforced composite material of the present embodiment includes the curable resin composition of the present embodiment, and can be manufactured using the curable resin composition and reinforcing fibers.
- the reinforcing fiber contained in the fiber-reinforced composite material include carbon fibers, glass fibers, aramid fibers, boron fibers, PBO fibers, high-strength polyethylene fibers, alumina fibers, and silicon carbide fibers.
- the form and arrangement of the reinforcing fibers are not particularly limited, and can be appropriately selected from woven fabrics, nonwoven fabrics, mats, knits, braids, unidirectional strands, rovings, choppeds, and the like.
- a preform (a laminate of woven fabrics made of reinforcing fibers, or a structure in which these are stitched together with stitch yarn, or a fiber structure such as a three-dimensional woven fabric or a braid) is applied as a form of reinforcing fibers.
- methods for producing these fiber reinforced composite materials include a liquid composite molding method, a resin film infusion method, a filament winding method, a hand layup method, and a pultrusion method.
- the resin transfer molding method which is one of the liquid composite molding methods, is to set materials other than preforms such as metal plates, foam cores and honeycomb cores in the mold in advance. Can be applied to various applications. Therefore, the resin transfer molding method is preferably used when mass-producing a composite material having a relatively complicated shape in a short time.
- the cyanate ester compound of the present embodiment has excellent solvent solubility, it is excellent in handleability. Furthermore, by using this cyanate ester compound, it is possible to realize a curable resin composition or a cured product having excellent flame retardancy, heat resistance and low thermal expansion. Moreover, since the curable resin composition according to the present embodiment has excellent low thermal expansibility, flame retardancy, and heat resistance, it is extremely useful as a highly functional polymer material.
- electrical insulation materials As materials with excellent thermal, electrical and mechanical properties, electrical insulation materials, sealing materials, adhesives, laminate materials, resists and build-up laminate materials, civil engineering / architecture, electricity / electronics, automobiles It is preferably used as a fixing material, a structural member, a reinforcing agent, a molding material, and the like in the fields of railways, ships, aircraft, sports equipment, arts and crafts.
- electrical insulating materials semiconductor encapsulating materials
- adhesives for electronic components aircraft structural members, satellite structural members, and railway vehicle structural members that require low thermal expansion, flame resistance, and high mechanical strength. is there.
- the curable resin composition for a printed wiring board according to the present embodiment includes the cyanate ester compound of the present embodiment, and includes the cyanate ester compound (A) represented by the following formula (1).
- Ar represents an aromatic ring
- each R 1 independently represents a hydrogen atom, an alkyl group or an aryl group.
- n is each independently an integer of 1 to 3, and m + n is the same as the total number of hydrogen atoms in the monovalent aromatic group composed of the aromatic ring and hydrogen atom.
- R 2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. Since the cyanate ester compound (A) may be the same as that in the curable resin composition, detailed description thereof is omitted here.
- the content of the cyanate ester compound (A) represented by the above formula (1) thus obtained in the curable resin composition for a printed wiring board of the present embodiment is appropriately set according to desired characteristics. Although it is not particularly limited, it is preferably 1 to 90 parts by mass, more preferably 5 to 70 parts by mass with respect to 100 parts by mass of the resin solid content contained in the resin composition.
- the “resin solid content in the resin composition” refers to a resin component contained in the resin composition and a component that becomes a resin component by heating.
- the resin composition contains the cyanate ester compound (A), an epoxy resin (B) described later, a solvent, an inorganic filler (C), and a curing accelerator
- resin solid content in the resin composition "Means a component excluding the solvent, inorganic filler (C) and curing accelerator, and” resin solid content 100 parts by weight "means the solvent, inorganic filler (C) and curing accelerator in the resin composition.
- the sum total of the components excluding is 100 parts by mass.
- the curable resin composition for a printed wiring board according to the present embodiment preferably includes the cyanate ester compound (A) and the epoxy resin (B).
- the epoxy resin (B) in the present embodiment any known one can be used as long as it is an epoxy resin having two or more epoxy groups in one molecule, and the type thereof is not particularly limited.
- Specific examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, phenol novolac type epoxy resin, bisphenol A novolac type epoxy resin, glycidyl ester type epoxy.
- aralkyl novolac type epoxy resin aralkyl novolac type epoxy resin, biphenyl aralkyl type epoxy resin, naphthylene ether type epoxy resin, cresol novolac type epoxy resin, polyfunctional phenol type epoxy resin, naphthalene type epoxy resin, anthracene type epoxy resin, naphthalene skeleton modified novolac type epoxy Resin, phenol aralkyl type epoxy resin, naphthol aralkyl type epoxy resin, dicyclopentadiene type epoxy resin, biphenyl type epoxy resin It can be obtained by reaction of oxy-resin, cycloaliphatic epoxy resin, polyol-type epoxy resin, phosphorus-containing epoxy resin, epoxidized double bond such as glycidylamine, glycidyl ester and butadiene, hydroxyl group-containing silicone resins and epichlorohydrin.
- epoxy resins biphenyl aralkyl type epoxy resins, naphthylene ether type epoxy resins, polyfunctional phenol type epoxy resins and naphthalene type epoxy resins are preferable in terms of flame retardancy and heat resistance. These epoxy resins can be used alone or in combination of two or more.
- the content of the epoxy resin (B) in the present embodiment can be appropriately set according to desired properties, and is not particularly limited, but is 10 to 99 with respect to 100 parts by mass of the resin solid content in the resin composition.
- the amount is preferably part by mass, and more preferably 10 to 70 parts by mass.
- the resin composition of this embodiment can also contain an inorganic filler (C).
- an inorganic filler (C) a well-known thing can be used suitably, The kind is not specifically limited.
- the inorganic filler (C) those generally used in laminate applications can be suitably used.
- silica such as natural silica, fused silica, synthetic silica, amorphous silica, aerosil and hollow silica, white carbon, titanium white, zinc oxide, magnesium oxide, zirconium oxide, Boron nitride, agglomerated boron nitride, silicon nitride, aluminum nitride, barium sulfate, aluminum hydroxide, aluminum hydroxide heat-treated product (aluminum hydroxide is heat-treated and part of the crystal water is reduced), boehmite and hydroxide Metal hydrates such as magnesium, molybdenum compounds such as molybdenum oxide and zinc molybdate, zinc borate, zinc stannate, alumina, clay, kaolin, talc, calcined clay, calcined kaolin, calcined talc, mica, E-glass, A-glass, NE-glass, C-glass, L-glass, D
- the resin composition of the present embodiment includes rubber powder such as styrene type, butadiene type, and acrylic type, core shell type rubber powder, silicone resin powder, silicone rubber powder, and silicone composite.
- An organic filler such as powder may be included. These organic fillers can be used alone or in combination of two or more.
- the content of the inorganic filler (C) can be appropriately set according to desired characteristics, and is not particularly limited.
- the content is preferably 50 to 1600 parts by mass, more preferably 60 to 600 parts by mass, and still more preferably 70 to 300 parts by mass with respect to 100 parts by mass of the resin solid content in the resin composition.
- the total content of the resin composition and the inorganic filler (C) is 50 to 1600 with respect to 100 parts by mass of the resin solid content in the resin composition.
- the amount is preferably such that it is part by mass, more preferably 60 to 600 parts by mass, and even more preferably 70 to 300 parts by mass.
- the inorganic filler (C) from the viewpoint of enhancing the interaction with the resin component and enhancing the mechanical strength of the laminate sheet, the metal foil-clad laminate and the printed wiring board, a silane coupling agent and a wetting and dispersing agent. Of these, it is preferable to use at least one of them.
- the silane coupling agent those generally used for inorganic surface treatment can be suitably used, and the type thereof is not particularly limited.
- silane coupling agents include aminosilanes such as ⁇ -aminopropyltriethoxysilane and N- ⁇ - (aminoethyl) - ⁇ -aminopropyltrimethoxylane, and ⁇ -glycidoxypropyltrimethoxysilane.
- silanes such as ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, vinylsilanes such as ⁇ -methacryloxypropyltrimethoxysilane and vinyl-tri ( ⁇ -methoxyethoxy) silane, N- ⁇ - Cationic silanes such as (N-vinylbenzylaminoethyl) - ⁇ -aminopropyltrimethoxysilane hydrochloride, and phenylsilanes can be mentioned.
- a silane coupling agent can be used individually by 1 type or in combination of 2 or more types.
- wet dispersing agent what is generally used for coating materials can be used suitably, The kind is not specifically limited.
- silane coupling agent a copolymer-based wetting and dispersing agent is preferably used. Specific examples thereof include Disperbyk-110, 111, 161, 180, BYK-W996, BYK manufactured by Big Chemie Japan Co., Ltd. -W9010, BYK-W903 and BYK-W940 (all are trade names).
- Wet dispersants can be used alone or in combination of two or more.
- the resin composition of this embodiment contains the said cyanate ester compound (A) and an epoxy resin (B), it is a thermosetting thing,
- the hardening rate of the resin component is made as needed.
- this hardening accelerator what is generally used as hardening accelerators, such as a cyanate ester compound and an epoxy resin, can be used conveniently, and the kind is not specifically limited.
- the hardening accelerator examples include zinc octylate, zinc naphthenate, cobalt naphthenate, copper naphthenate, iron acetylacetone, nickel octylate and manganese octylate, phenol, xylenol, cresol, resorcin, and catechol.
- Phenol compounds such as octylphenol and nonylphenol, alcohols such as 1-butanol and 2-ethylhexanol, 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 1-cyanoethyl-2-phenylimidazole, Imidazoles such as 1-cyanoethyl-2-ethyl-4-methylimidazole, 2-phenyl-4,5-dihydroxymethylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole and the like
- Derivatives such as carboxylic acids of these imidazoles or adducts thereof, dicyandiamide, amines such as benzyldimethylamine and 4-methyl-N, N-dimethylbenzylamine, phosphine compounds, phosphine oxide compounds, Phosphorus compounds such as phosphonium salt compounds and diphosphine compounds, epoxy-imidazole ad
- the amount of the curing accelerator used can be appropriately adjusted in consideration of the degree of curing of the resin and the viscosity of the resin composition, and is not particularly limited, but is usually based on 100 parts by mass of the resin solid content in the resin composition. The amount is about 0.005 to 10 parts by mass.
- a cyanate ester compound other than the cyanate ester compound (A) represented by the above formula (1) a maleimide compound, a phenol resin, as long as desired characteristics are not impaired.
- You may contain 1 or more types selected from the group which consists of a compound which has an oxetane resin, a benzoxazine compound, and a polymerizable unsaturated group.
- Compounds are preferred.
- the cyanate ester compound other than the cyanate ester compound (A) represented by the formula (1) is other than the cyanate ester compound represented by the formula (1) described in the description of the curable resin composition. Since it may be the same as that of the cyanate ester compound, detailed description is omitted here.
- maleimide compound generally known compounds can be used as long as they have one or more maleimide groups in one molecule.
- maleimide compounds include 4,4-diphenylmethane bismaleimide, phenylmethane maleimide, m-phenylene bismaleimide, 2,2-bis (4- (4-maleimidophenoxy) -phenyl) propane, 3,3-dimethyl- 5,5-diethyl-4,4-diphenylmethane bismaleimide, 4-methyl-1,3-phenylene bismaleimide, 1,6-bismaleimide- (2,2,4-trimethyl) hexane, 4,4-diphenyl ether bis Maleimide, 4,4-diphenylsulfone bismaleimide, 1,3-bis (3-maleimidophenoxy) benzene, 1,3-bis (4-maleimidophenoxy) benzene, polyphenylmethanemaleimide, and prepolymers of these maleimide compounds, Or the above maleimide
- the phenol resin a phenol resin having two or more hydroxyl groups in one molecule is preferable, and generally known resins can be used.
- the phenolic resin include bisphenol A type phenolic resin, bisphenol E type phenolic resin, bisphenol F type phenolic resin, bisphenol S type phenolic resin, phenol novolac resin, bisphenol A novolac type phenolic resin, glycidyl ester type phenolic resin, aralkyl novolac.
- Type phenol resin biphenyl aralkyl type phenol resin, cresol novolac type phenol resin, polyfunctional phenol resin, naphthol resin, naphthol novolak resin, polyfunctional naphthol resin, anthracene type phenol resin, naphthalene skeleton modified novolak type phenol resin, phenol aralkyl type phenol Resin, naphthol aralkyl type phenol resin, dicyclopentadiene type phenol resin, Eniru type phenolic resins, alicyclic phenolic resins, polyol-type phenolic resin, phosphorus-containing phenol resin and hydroxyl-containing silicone resins and the like, but is not particularly limited. These phenol resins can be used individually by 1 type or in combination of 2 or more types.
- the oxetane resin, the benzoxazine compound and the compound having a polymerizable unsaturated group may be the same as the oxetane resin described in the description of the curable resin composition, detailed description thereof is omitted here.
- the curable resin composition for a printed wiring board according to the present embodiment includes various polymers such as other thermosetting resins, thermoplastic resins and oligomers thereof, and elastomers as long as desired characteristics are not impaired.
- a compound, a flame retardant compound, various additives, etc. can be included. These are not particularly limited as long as they are generally used.
- the flame retardant compound include bromine compounds such as 4,4′-dibromobiphenyl, phosphate esters, melamine phosphate, phosphorus-containing epoxy resins, nitrogen compounds such as melamine and benzoguanamine, oxazine ring-containing compounds, and silicones. System compounds.
- additives include UV absorbers, antioxidants, photopolymerization initiators, fluorescent brighteners, photosensitizers, dyes, pigments, thickeners, flow regulators, lubricants, antifoaming agents, and dispersions. Agents, leveling agents, brighteners, polymerization inhibitors and the like. These may be used alone or in combination of two or more as desired.
- the curable resin composition for printed wiring boards of this embodiment can contain an organic solvent as needed.
- the resin composition of the present embodiment can be used as an aspect (that is, a solution or a varnish) in which at least a part, preferably all, of the various resin components described above are dissolved or compatible with an organic solvent. Any known organic solvent can be used as long as it dissolves or is compatible with at least a part, preferably all of the above-mentioned various resin components, and the kind thereof is not particularly limited. .
- organic solvents include ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone, cellosolve solvents such as propylene glycol monomethyl ether and propylene glycol monomethyl ether acetate, ethyl lactate, methyl acetate, ethyl acetate, butyl acetate and acetic acid.
- Nonpolar solvents such as ester solvents such as isoamyl, ethyl lactate, methyl methoxypropionate and methyl hydroxyisobutyrate, polar solvents such as amides such as dimethylacetamide and dimethylformamide, and aromatic hydrocarbons such as toluene and xylene A solvent etc. are mentioned. These can be used alone or in combination of two or more.
- the curable resin composition for a printed wiring board of the present embodiment can be used as, for example, an insulating layer of a printed wiring board and a semiconductor package material.
- a prepreg can be obtained by impregnating or applying a solution obtained by dissolving the resin composition of the present embodiment in a solvent to a base material and drying.
- a solution obtained by dissolving the resin composition for printed wiring boards of the present embodiment in a solvent is applied to the plastic film and dried, so that a build-up film or a dry film It can be a solder resist.
- the solvent can be dried by heating at a temperature of 20 ° C. to 150 ° C. for 1 to 90 minutes, for example.
- the resin composition can be used in an uncured state in which the solvent is simply dried, or can be used in a semi-cured (B-stage) state as necessary.
- the prepreg of this embodiment is obtained by impregnating or applying the curable resin composition for a printed wiring board of the present embodiment described above to a base material, that is, the present embodiment in which the base material and the base material are impregnated or applied. And a curable resin composition for printed wiring boards in the form.
- the manufacturing method of a prepreg will not be specifically limited if it is a method of manufacturing a prepreg combining the resin composition of this embodiment, and a base material.
- the prepreg of the present embodiment can be produced by impregnating or coating the resin composition of the present embodiment on a base material and then semi-curing it by a method of drying at 120 to 220 ° C.
- the amount of the resin composition attached to the substrate is preferably in the range of 20 to 99% by mass.
- a base material used when manufacturing the prepreg of the present embodiment known materials used for various printed wiring board materials can be used.
- a substrate include glass fibers such as E glass, D glass, L glass, S glass, T glass, Q glass, UN glass, NE glass and spherical glass, and inorganic fibers other than glass such as quartz, Examples thereof include organic fibers such as polyimide, polyamide and polyester, and woven fabrics such as liquid crystal polyester, but are not particularly limited thereto.
- woven fabric, non-woven fabric, roving, chopped strand mat and surfacing mat are known, but any of them may be used.
- a base material can be used individually by 1 type or in combination of 2 or more types.
- the thickness of the base material is not particularly limited, but is preferably in the range of 0.01 to 0.2 mm for laminates, and woven fabrics that have been subjected to ultra-opening treatment or plugging treatment are particularly dimensionally stable. From the viewpoint of sex. Further, a glass woven fabric surface-treated with a silane coupling agent such as epoxy silane treatment or amino silane treatment is preferable from the viewpoint of moisture absorption heat resistance. A liquid crystal polyester woven fabric is preferable from the viewpoint of electrical characteristics.
- the metal foil-clad laminate of the present embodiment is obtained by laminating one or more prepregs described above and laminating the metal foil on one or both sides thereof. That is, the metal foil-clad laminate of this embodiment includes one or more prepregs and a metal foil disposed on one or both sides of the prepreg. Specifically, a metal foil-clad laminate can be produced by laminating one or a plurality of the prepregs described above, placing a metal foil such as copper or aluminum on one or both sides thereof, and laminating and forming. Although the metal foil used here will not be specifically limited if it is used for printed wiring board material, Copper foil, such as a rolled copper foil and an electrolytic copper foil, is preferable.
- the thickness of the metal foil is not particularly limited, but is preferably 2 to 70 ⁇ m, and more preferably 3 to 35 ⁇ m.
- a molding condition a general laminated board for a printed wiring board and a multilayer board can be applied.
- laminate molding is performed at a temperature of 180 to 350 ° C., a heating time of 100 to 300 minutes, and a surface pressure of 20 to 100 kg / cm 2.
- the metal foil-clad laminate of this embodiment can be manufactured.
- it can also be set as a multilayer board by carrying out the lamination
- this multilayer board includes the prepreg and the inner layer wiring board, and is formed by laminating one or two or more of these prepregs and inner layer wiring boards.
- a method of manufacturing such a multilayer board for example, copper foil (for example, 35 ⁇ m in thickness) is disposed on both surfaces of one prepreg described above, laminated under the above conditions, an inner layer circuit is formed, and black is added to this circuit.
- the inner layer circuit board is formed by carrying out the treatment, and then the inner layer circuit board and the prepreg are alternately laminated one by one, and the copper foil is further disposed on the outermost layer, preferably under the above conditions.
- the method of carrying out lamination molding under vacuum is mentioned. Thereby, a multilayer board can be produced.
- the metal foil-clad laminate of the present embodiment can be suitably used as a printed wiring board material.
- the printed wiring board can be manufactured according to a conventional method, and the manufacturing method is not particularly limited.
- an example of the manufacturing method of a printed wiring board is shown.
- a metal foil-clad laminate such as the copper clad laminate described above is prepared.
- an etching process is performed on the surface of the metal foil-clad laminate to form an inner layer circuit, thereby producing an inner layer substrate.
- the inner layer circuit surface of the inner layer substrate is subjected to a surface treatment to increase the adhesive strength as necessary, then the required number of the prepregs are stacked on the inner layer circuit surface, and a metal foil for the outer layer circuit is stacked on the outer surface.
- a multilayer laminate is produced in which an insulating layer made of a cured material of the base material and the thermosetting resin composition is formed between the inner layer circuit and the metal foil for the outer layer circuit.
- a plated metal film is formed on the wall surface of the hole to electrically connect the inner layer circuit and the outer layer metal foil.
- a printed wiring board is manufactured by performing an etching process to the metal foil for outer layer circuits, and forming an outer layer circuit.
- the printed wiring board obtained as described above includes an insulating layer and a conductor layer formed on the surface of the insulating layer, and the insulating layer includes the curable resin composition for a printed wiring board of the present embodiment described above. Is included. That is, the insulating layer in this printed wiring board includes the prepreg of the present embodiment described above (the base material and the resin composition of the present embodiment impregnated or applied thereto), and the metal foil-clad laminate of the present embodiment described above. It comes from the layer of the resin composition (the layer made of the resin composition of the present embodiment).
- the laminated sheet of the present embodiment can be obtained by applying a solution obtained by dissolving or dissolving the curable resin composition for a printed wiring board of the present embodiment in a solvent to a support and drying it. That is, the laminated sheet of the present embodiment includes a support and a resin phase obtained by coating and drying the resin composition on the surface of the support.
- the support used here include a polyethylene film, a polypropylene film, a polycarbonate film, a polyethylene terephthalate film, an ethylenetetrafluoroethylene copolymer film, a release film in which a release agent is applied to the surface of these films, and a polyimide.
- Examples thereof include organic film base materials such as films, conductor foils such as copper foil and aluminum foil, and plate-like materials such as glass plates, SUS plates, and FRP, but are not particularly limited.
- Examples of the coating method include a method in which a solution obtained by dissolving or compatibilizing the resin composition of the present embodiment in a solvent is coated on a support with a bar coater, a die coater, a doctor blade, a baker applicator, or the like. Moreover, it can also be set as a single layer sheet (resin sheet
- the solution obtained by dissolving or dissolving the resin composition of the present embodiment in a solvent is supplied into a mold having a sheet-like cavity and dried to form a sheet, thereby supporting the support.
- a single layer sheet (resin sheet) can also be obtained without using.
- the drying conditions for removing the solvent are not particularly limited, but the remaining solvent in the curable resin composition for printed wiring boards and the curing of the resin composition. From the viewpoint of suppression, exposure to a temperature environment of 20 ° C. to 200 ° C. for 1 to 90 minutes is preferable. Further, the thickness of the resin layer in the single layer or laminated sheet of the present embodiment can be adjusted by the concentration of the solution of the resin composition of the present embodiment and the coating thickness, and is not particularly limited. 0.1 to 500 ⁇ m is preferable. By making this thickness 500 ⁇ m or less, it becomes easier to suppress the remaining of the solvent during drying.
- the curable resin composition for a printed wiring board comprising only a non-halogen compound (in other words, a resin composition not containing a halogen compound, a non-halogen resin composition). ), A prepreg, a laminated sheet, a metal foil-clad laminate, and the like, and its industrial practicality is extremely high.
- AMTCN 1,3-bis (4-cyanatophenyl) -5,7-dimethyladamantane
- AMTOH 1,3-bis (4-hydroxyphenyl) -5,7-dimethyladamantane
- the crystals after washing are dissolved in a mixed solvent of 1100 mL of ethyl acetate and 500 mL of toluene, washed with 500 mL of 0.5 mass% NaOH aqueous solution three times, and then washed with 500 mL of water until the pH of the aqueous phase becomes neutral.
- the organic phase after washing with water was concentrated to dryness under reduced pressure to obtain a solid.
- the obtained solid was dissolved in 1000 mL of ethyl acetate at 70 ° C. Thereto, 2000 mL of heptane at room temperature was added, and the precipitate was obtained by stirring for 10 minutes.
- AMTOH (white solid).
- the structure of AMTOH was identified by NMR.
- the reaction solution was allowed to stand to separate the organic phase and the aqueous phase.
- the obtained organic phase was washed with 2000 g of 0.1N hydrochloric acid and then washed 5 times with 2000 g of water.
- the electrical conductivity of the waste water in the fifth washing with water was 20 ⁇ S / cm, and it was confirmed that the ionic compounds that could be removed were sufficiently removed by washing with water.
- AMTCN could be dissolved in methyl ethyl ketone (MEK) at 25 ° C. by 50% by mass or more.
- MEK methyl ethyl ketone
- AMTcCN 1,3-bis (3-methyl-4-cyanatophenyl) -5,7-dimethyladamantane
- AMTcOH 1,3-bis (3-methyl-4-hydroxyphenyl) -5,7-dimethyladamantane
- the reaction solution was allowed to stand to separate the organic phase and the aqueous phase.
- the obtained organic phase was washed with 130 g of 0.1N hydrochloric acid and then washed 5 times with 130 g of water.
- the electrical conductivity of the waste water in the fifth washing with water was 20 ⁇ S / cm, and it was confirmed that the ionic compounds that could be removed were sufficiently removed by washing with water.
- AMTcCN could be dissolved in methyl ethyl ketone (MEK) at 25 ° C. by 50% by mass or more.
- MEK methyl ethyl ketone
- uAMTCN 1,3-bis (4-cyanatophenyl) adamantane
- uAMMTOH 1,3-bis (4-hydroxyphenyl) adamantane
- the crystal after washing is dissolved in a mixed solvent of 1200 mL of ethyl acetate and 400 mL of toluene, washed once with 300 mL of 0.5 mass% NaOH aqueous solution, and then washed with 300 mL of water until the pH of the aqueous phase becomes neutral. Was repeated.
- the organic phase after washing with water was concentrated to dryness under reduced pressure to obtain a solid.
- the obtained solid was dissolved in 600 mL of ethyl acetate at 65 ° C. Thereto, 1200 mL of room temperature heptane was added, and a precipitate was obtained by stirring for 30 minutes.
- the organic phase after washing with water was concentrated under reduced pressure and concentrated to dryness at 90 ° C. for 1 hour to obtain 39 g of yellowish white solid crystals.
- the obtained crystals were dissolved in 98 g of methyl ethyl ketone (MEK) and 21 g of n-hexane at 90 ° C., and then recrystallized.
- the obtained crystals were washed with 200 mL of n-hexane and then dried under reduced pressure to obtain 20 g of the intended cyanate ester compound uAMTCN (light yellow crystals).
- the structure of the obtained cyanate ester compound uAMTCN was identified by NMR.
- the 1 H-NMR spectrum is shown in FIG. 1 H-NMR: (500 MHz, CDCl 3)
- UAMTCN could be dissolved in methyl ethyl ketone (MEK) at 25 ° C. by 30% by mass or more.
- MEK methyl ethyl ketone
- Example 4 Preparation of curable resin composition and creation of cured product> 100 parts by mass of the cyanate ester compound AMTCN obtained in Example 1 was put into an eggplant-shaped flask, heated and melted at 150 ° C., degassed with a vacuum pump, and then zinc octylate (trade name “manufactured by Nippon Chemical Industry Co., Ltd.” A curable resin composition was prepared by adding 0.1 parts by mass of “nickel nicotate zinc” and a metal content of 18%) and shaking and mixing for 1 minute.
- the obtained curable resin composition was poured into a mold made of an aluminum plate, copper foil and fluorine-coated stainless steel, placed in an oven, and zinc octylate in the resin composition was uniformly dispersed at 150 ° C. It was cured by vacuum pressing at 20 kg / cm 2 at 90 ° C. for 90 minutes to obtain a cured product having a side of 100 mm and a thickness of 1.5 mm.
- Example 5 A cured product was obtained in the same manner as in Example 4 except that it was cured at 220 ° C. for 90 minutes by a vacuum press at 20 kg / cm 2 and further heated at 220 ° C. for 6 hours.
- Example 6 Instead of using 100 parts by mass of AMTCN, a cured product was obtained in the same manner as in Example 4 except that 100 parts by mass of AMTcCN obtained in Example 2 was used.
- Example 7 Instead of using 100 parts by mass of AMTCN, a cured product was obtained in the same manner as in Example 4 except that 100 parts by mass of uAMTCN obtained in Example 3 was used.
- Example 8 100 parts by mass of AMTCN obtained in Example 1 was put into an eggplant-shaped flask, heated and melted at 150 ° C., and deaerated with a vacuum pump. Thereafter, it was poured into a mold described in JIS-K7238-2-2009, placed in an oven, cured by heating at 180 ° C. for 3 hours, and then at 250 ° C. for 3 hours, and 100 mm on one side, thickness 1. A cured product of 5 mm was obtained.
- Example 9 instead of using 100 parts by weight of AMTCN, a cured product was obtained in the same manner as in Example 8 except that 100 parts by weight of AMTcCN obtained in Example 2 was used.
- Example 10 Instead of using 100 parts by mass of AMTCN, a cured product was obtained in the same manner as in Example 8 except that 100 parts by mass of uAMTCN obtained in Example 3 was used.
- the maximum value of the loss elastic modulus (E ′′) obtained at that time was measured as the glass transition temperature.
- the glass transition temperature is an index of heat resistance.
- thermomechanical analyzer (trade name “TMA / SS6100” manufactured by SII NanoTechnology Co., Ltd.)
- the size of the test piece of the cured product is 5 mm ⁇
- Thermomechanical analysis in the expansion / compression mode was performed under the conditions of 5 mm ⁇ 1.5 mm, start temperature 30 ° C., end temperature 330 ° C., temperature increase rate 10 ° C./min, weight 0.05N (49 mN), 60
- the average amount of thermal expansion per 1 ° C. at ⁇ 120 ° C. was measured.
- Mass reduction rate (%) (DE) / D ⁇ 100
- D represents the mass at the starting temperature
- E represents the mass at 500 ° C.
- the evaluation results are shown in Tables 1 and 2.
- the bifunctional cyanatophenyl type cyanate ester compound having an adamantane ring skeleton of the present invention has excellent solvent solubility, and therefore is excellent in handleability. confirmed.
- the cured product of the curable resin composition containing the cyanate ester compound of the present invention has a low coefficient of thermal expansion and excellent flame retardancy and heat resistance compared to those using conventional cyanate ester compounds. It was confirmed to have sex.
- Example 11 50 parts by mass of AMTCN obtained as described above, 50 parts by mass of a biphenyl aralkyl type epoxy resin (product name “NC-3000-FH”, Nippon Kayaku Co., Ltd.), fused silica (product name “SC2050MB”), Varnish was obtained by mixing 100 parts by mass of Matex) and 0.05 part by mass of zinc octylate (manufactured by Nippon Chemical Industry Co., Ltd.). This varnish is diluted with methyl ethyl ketone, impregnated and coated on a 0.1 mm thick E glass woven fabric, dried by heating at 150 ° C. for 5 minutes, and the total amount of resin solids and fused silica is 100 parts by mass. A prepreg containing 50 parts by mass of resin solids was obtained.
- Example 7 Instead of using 50 parts by mass of AMTCN, 50 parts by mass of a phenol novolac-type cyanate ester compound (product name “Primaset PT-30”, manufactured by Lonza Japan Co., Ltd.) was used, and the amount of zinc octylate used was changed from 0.05 parts by mass. Insulation was carried out in the same manner as in Example 11 except that the temperature and time at the time of drying after impregnating coating was changed from 5 minutes at 150 ° C. to 4 minutes at 165 ° C. A metal foil-clad laminate with a layer thickness of 0.8 mm was obtained. Table 3 shows the evaluation results of the obtained metal foil-clad laminate.
- a phenol novolac-type cyanate ester compound product name “Primaset PT-30”, manufactured by Lonza Japan Co., Ltd.
- the cyanate ester compound of the present invention has excellent solvent solubility, a low coefficient of thermal expansion, and a cured product having excellent flame retardancy and heat resistance. Therefore, the present invention is extremely useful as a high-functional polymer material, and as a material excellent in thermal, electrical and mechanical properties, an electrically insulating material, a semiconductor sealing material, an electronic component adhesive, and a laminated material In addition to resists and build-up laminate materials, it is also used for fixing materials, structural members, reinforcing agents, and molding materials in the fields of civil engineering / architecture, electricity / electronics, automobiles, railways, ships, aircraft, sports equipment, arts and crafts, etc. There is industrial applicability.
- the resin composition of the present invention is used in various applications such as electric / electronic materials, machine tool materials, and aviation materials, for example, electrical insulating materials, semiconductor plastic packages, sealing materials, adhesives, laminated materials, resists, builds, etc. It can be used widely and effectively as an up laminate material. In particular, it can be used particularly effectively as a printed wiring board material for high integration and high density in recent information terminal equipment and communication equipment.
- the laminate and the metal foil-clad laminate of the present invention have not only low water absorption but also excellent performance in moisture absorption heat resistance, their industrial practicality is extremely high.
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Abstract
Description
また、本発明は、低吸水性を有するだけでなく、吸湿耐熱性にも優れるプリント配線板を実現し得るプリント配線板用硬化性樹脂組成物、これを用いたプリプレグ及び積層シート、並びに該プリプレグを用いた金属箔張り積層板及びプリント配線板を提供することを目的とする。
[2]前記式(1)において、Arがベンゼン環を示し、nが1であり、かつ、R2がメチル基、エチル基、プロピル基、イソプロピル基又はt-ブチル基を示す、[1]に記載のシアン酸エステル化合物。
[3]Arがベンゼン環を示し、かつ、nが2又は3である、[1]に記載のシアン酸エステル化合物。
[4]Arがベンゼン環以外の芳香環を示す、請求項1に記載のシアン酸エステル化合物。
[5]下記一般式(1)で表されるシアン酸エステル化合物を含む、硬化性樹脂組成物。
[6]前記式(1)で表されるシアン酸エステル化合物以外のシアン酸エステル化合物、エポキシ樹脂、オキセタン樹脂及び重合可能な不飽和基を有する化合物からなる群より選択される1種以上を更に含む、[5]に記載の硬化性樹脂組成物。
[7]前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環を示し、nが1であり、かつ、R2がメチル基、エチル基、プロピル基、イソプロピル基又はt-ブチル基を示す、[5]又は[6]に記載の硬化性樹脂組成物。
[8]前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環を示し、かつ、nが2又は3である、[5]又は[6]に記載の硬化性樹脂組成物。
[9]前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環以外の芳香環を示す、[5]又は[6]に記載の硬化性樹脂組成物。
[10][5]~[9]のいずれか一つに記載の硬化性樹脂組成物を硬化させてなる、硬化物。
[11]基材と、その基材に含浸又は塗布した[5]~[9]のいずれか一項に記載の硬化性樹脂組成物と、を含む、構造材料用プリプレグ。
[12][5]~[9]のいずれか一つに記載の硬化性樹脂組成物を含む、封止用材料。
[13][5]~[9]のいずれか一つに記載の硬化性樹脂組成物を含む、繊維強化複合材料。
[14][5]~[9]のいずれか一つに記載の硬化性樹脂組成物を含む、接着剤。
[15]プリント配線板用である、[5]~[9]のいずれか一つに記載の硬化性樹脂組成物。
[16]エポキシ樹脂を更に含む、[15]に記載の硬化性樹脂組成物。
[17]前記式(1)で表されるシアン酸エステル化合物の含有量が、前記硬化性樹脂組成物中の樹脂固形分100質量部に対して、1~90質量部である、[16]に記載の硬化性樹脂組成物。
[18]無機充填材を更に含む、[16]又は[17]に記載の硬化性樹脂組成物。
[19]前記無機充填材の含有量が、前記硬化性樹脂組成物中の樹脂固形分100質量部に対して、50~1600質量部である、[18]に記載の硬化性樹脂組成物。
[20]マレイミド化合物、フェノール樹脂及び前記式(1)で表されるシアン酸エステル化合物以外のシアン酸エステル化合物からなる群より選択される1種以上を更に含む、[16]~[19]のいずれか一つに記載の硬化性樹脂組成物。
[21]前記エポキシ樹脂が、ビフェニルアラルキル型エポキシ樹脂、ナフチレンエーテル型エポキシ樹脂、多官能フェノール型エポキシ樹脂及びナフタレン型エポキシ樹脂からなる群より選択される1種以上である、[16]~[20]のいずれか一つに記載の硬化性樹脂組成物。
[22]基材と、その基材に含浸又は塗布した[15]~[21]のいずれか一つに記載の硬化性樹脂組成物と、を含む、プリプレグ。
[23]1枚以上の[22]に記載のプリプレグと、前記プリプレグの片面又は両面に配置した金属箔と、を含む金属箔張り積層板。
[24]支持体と、その支持体の表面に[15]~[21]のいずれか一つに記載の硬化性樹脂組成物を塗工及び乾燥させてなる樹脂層と、を含む積層シート。
[25]絶縁層と、前記絶縁層の表面に形成された導体層とを含むプリント配線板であって、前記絶縁層が、[15]~[21]のいずれか一つに記載の硬化性樹脂組成物を含むプリント配線板。
本実施形態のシアン酸エステル化合物は上記式(1)で表される。式(1)において、Arは芳香環を示し、R1は各々独立に、水素原子、アルキル基又はアリール基を示す。nは各々独立に1~3の整数であり、m+nは上記芳香環と水素原子とからなる1価の芳香族基における水素原子の総数と同一である。R2は、水素原子(ただし、Arがベンゼン環、nがいずれも1、R1が水素原子、かつmがいずれも4であって、シアナト基がアダマンチル基に対して4位に結合する場合を除く。)又は炭素数1~4のアルキル基を示す。R3は水素原子又は炭素数1~4のアルキル基を示す。
1,3-ビス(4-メチル-2-シアナトフェニル)-5,7-ジプロピルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-メチル-7-イソプロピルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-エチル-7-イソプロピルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-プロピル-7-イソプロピルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5,7-ジイソプロピルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-メチル-7-t-ブチルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-エチル-7-t-ブチルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-プロピル-7-t-ブチルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5-イソプロピル-7-t-ブチルアダマンタン、1,3-ビス(4-メチル-2-シアナトフェニル)-5,7-ジ-t-ブチルアダマンタン、及び1,3-ビス(2,4-ジシアナトフェニル)アダマンタンが挙げられる。
本実施形態の硬化性樹脂組成物は、上記本実施形態のシアン酸エステル化合物を含むものであり、下記式(1)で表されるシアン酸エステル化合物を含むものであってもよい。
本実施形態の構造材料用プリプレグは、基材と、その基材に含浸又は塗布した上記硬化性樹脂組成物とを含むものである。構造材料用プリプレグは、上記硬化性樹脂組成物を無機及び/又は有機繊維基材に含浸又は塗布し、更に必要に応じて乾燥することにより、製造することができる。
本実施形態のプリント配線板用硬化性樹脂組成物は、上記本実施形態のシアン酸エステル化合物を含むものであり、下記式(1)で表されるシアン酸エステル化合物(A)を含むものであってもよい。
1H-NMR:(500MHz、Methanol-d3)
δ(ppm)=0.95 (s,6H)、1.22(s,2H)、1.46(d,J=12.5Hz,4H)、1.54(d,J=12.5Hz,4H)、1.76(s,2H)、6.71(m,J=8.5Hz,4H)、7.18(m,J=8.5Hz,4H)
次に、上記方法で得られたAMTOH550g(OH基当量:174.3g/eq.、ヒドロキシ基換算で3.16mol)及びトリエチルアミン319.3g(3.16mol、AMTOHのヒドロキシ基1モルに対して1.0モル)をジクロロメタン3300gに溶解させ、これを溶液1とした。
1H-NMR:(500MHz、CDCl3)
AMTCNのIRスペクトルは2237cm-1及び2271cm-1(シアン酸エステル基)の吸収を示し、且つ、ヒドロキシ基の吸収は示さなかった。IRチャートを図3に示す。
<1,3-ビス(3-メチル-4-シアナトフェニル)-5,7-ジメチルアダマンタン(以下、「AMTcCN」と略記する。)の合成>
下記式(7)で表されるAMTcCNを後述のようにして合成した。
1H-NMR:(400MHz、ACETONE-D6)
δ(ppm)=7.89(2H,s),7.15(2H,d,J=2.2Hz),7.04(2H,dd,J=8.0,2.2Hz),6.74(2H,d,J=8.0Hz),2.19(6H,s),1.79(2H,s),1.56-1.48(8H,m),1.21(2H,s),0.95(6H,s)
次に、上記方法で得られたAMTcOH40g(OH基当量:188.3g/eq.、ヒドロキシ基換算で0.21mol)及びトリエチルアミン21.5g(0.21mol、AMTcOHのヒドロキシ基1モルに対して1.0モル)をジクロロメタン240gに溶解させ、これを溶液3とした。
1H-NMR:(500MHz、CDCl3)
AMTcCNのIRスペクトルは2248cm-1及び2284cm-1(シアン酸エステル基)の吸収を示し、且つ、ヒドロキシ基の吸収は示さなかった。IRチャートを図6に示す。
1H-NMR:(500MHz、ACETONE-D6)
δ(ppm)=1.69(s,2H)、1.82(s,8H)、1.86(s,2H)、2.17(s,2H)、6.71(d,J=7.4Hz,4H)、7.16(d,J=7.4Hz,4H)
次に、上記方法で得られたuAMTOH35g(OH基当量:160.2g/eq.、ヒドロキシ基換算で0.218mol)及びトリエチルアミン22.5g(0.218mol、uAMTOHのヒドロキシ基1モルに対して1.0モル)をテトラヒドロフラン140gに溶解させ、これを溶液5とした。
1H-NMR:(500MHz、CDCl3)
uAMTCNのIRスペクトルは2238cm-1及び2266cm-1(シアン酸エステル基)の吸収を示し、且つ、ヒドロキシ基の吸収は示さなかった。IRチャートを図9に示す。
<硬化性樹脂組成物の調製及び硬化物の作成>
実施例1で得られたシアン酸エステル化合物AMTCN100質量部をナス型フラスコに投入し、150℃で加熱溶融させ、真空ポンプで脱気した後、オクチル酸亜鉛(日本化学産業株式会社製、商標「ニッカオクチック酸亜鉛」、金属含有量18%)を0.1質量部加え1分間振とうさせて混合することで、硬化性樹脂組成物を調製した。
220℃にて90分間、20kg/cm2での真空プレスにより硬化させた後、更に220℃にて6時間加熱したこと以外は、実施例4と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、実施例2で得られたAMTcCN100質量部を用いたこと以外は実施例4と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、実施例3で得られたuAMTCN100質量部を用いたこと以外は実施例4と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、2,2-ビス(4-シアナートフェニル)プロパン(三菱ガス化学製、商品名「skylex」)100質量部を用い、更にオクチル酸亜鉛を加えなかったこと以外は、実施例4と同様にして硬化物を得た。なお、2,2-ビス(4-シアナートフェニル)プロパンは、メチルエチルケトンに対し、25℃で50質量%以上溶解することが可能であった。
AMTCN100質量部を用いる代わりに、2,2-ビス(4-シアナートフェニル)プロパン(三菱ガス化学製商品名「skylex」)100質量部を用い、更にオクチル酸亜鉛を加えなかったこと以外は、実施例5と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、2,2-ビス(4-シアナートフェニル)プロパン(三菱ガス化学製商品名「skylex」)100質量部を用い、オクチル酸亜鉛の使用量を0.1質量部から0.05質量部に変更した以外は、実施例4と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、2,2-ビス(4-シアナートフェニル)プロパン(三菱ガス化学製商品名「skylex」)100質量部を用い、オクチル酸亜鉛の使用量を0.1質量部から0.05質量部に変更した以外は、実施例5と同様にして硬化物を得た。
実施例1で得られたAMTCN100質量部をナス型フラスコに投入し、150℃で加熱溶融させ、真空ポンプで脱気した。その後、JIS-K7238-2-2009に記載の型に流し込み、オーブンに入れ、180℃にて3時間、その後、250℃にて3時間加熱することにより硬化させ、1辺100mm、厚さ1.5mmの硬化物を得た。
AMTCN100質量部を用いる代わりに、実施例2で得られたAMTcCN100質量部を用いたこと以外は実施例8と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、実施例3で得られたuAMTCN100質量部を用いたこと以外は実施例8と同様にして硬化物を得た。
AMTCN100質量部を用いる代わりに、2,2-ビス(4-シアナートフェニル)プロパン(三菱ガス化学製商品名「skylex」)100質量部を用いたこと以外は、実施例8と同様にして硬化物を得た
(ガラス転移温度(Tg))
JIS-K7244-3(JIS C6481)に準拠し、実施例4、5及び比較例1~4においては、動的粘弾性測定装置(ティー・エイ・インスツルメント・ジャパン株式会社製、型番「Q800」)を用い、開始温度30℃、終了温度400℃、昇温速度10℃/分、測定周波数10Hzの条件にて、実施例6~8及び比較例5においては、動的粘弾性測定装置(ティー・エイ・インスツルメント・ジャパン株式会社製 型番「AR2000」)を用い、開始温度30℃、終了温度400℃、昇温速度3℃/分、測定周波数1Hzの条件にて、硬化物の動的粘弾性を測定し、その際得られた損失弾性率(E”)の最大値をガラス転移温度とした。ガラス転移温度は耐熱性の指標である。
JIS-K-7197-2012(JIS C6481)に準拠し、熱機械的分析装置(エスアイアイ・ナノテクノロジー株式会社製、商品名「TMA/SS6100」)を用い、硬化物の試験片のサイズ5mm×5mm×1.5mm、開始温度30℃、終了温度330℃、昇温速度10℃/分、加重0.05N(49mN)の条件にて、膨張・圧縮モードでの熱機械分析を実施し、60~120℃における1℃当たりの平均熱膨張量を測定した。
UL94に準拠し、難燃性試験を実施した。硬化物の試験片のサイズは100mm×20mm×1.5mmとした。
JIS-K7120-1987に準拠し、示差熱熱質量同時測定装置(エスアイアイ・ナノテクノロジー株式会社製、商品名「TG/DTA6200」)を用い、硬化物の試験片のサイズ3mm×3mm×1.5mm、開始温度30℃、終了温度550℃、昇温速度10℃/分、窒素雰囲気下の条件にて、質量を測定し、500℃における質量減少率を下記式に基づき算出した。
質量減少率(%)=(D-E)/D×100
ここで、Dは開始温度での質量を、Eは500℃での質量を表す。なお、上記の難燃性の評価に加えて、熱分解時の残渣量が多いこと、すなわち、質量減少率が低いことも難燃性として評価する。
表1及び表2からも明らかなように、本発明のアダマンタン環骨格を有する2官能シアナトフェニルタイプのシアン酸エステル化合物は、優れた溶剤溶解性を有することから、取扱性にも優れることが確認された。また、本発明のシアン酸エステル化合物を含む硬化性樹脂組成物の硬化物は、従来品のシアン酸エステル化合物を用いたものに比して、熱膨張率が低く、優れた難燃性及び耐熱性を有することが確認された。
上述のようにして得られたAMTCN50質量部、ビフェニルアラルキル型エポキシ樹脂(製品名「NC-3000-FH」、日本化薬(株)製)50質量部、溶融シリカ(製品名「SC2050MB」、アドマテックス製)100質量部、及びオクチル酸亜鉛(日本化学産業(株)製)0.05質量部を混合してワニスを得た。このワニスをメチルエチルケトンで希釈し、厚さ0.1mmのEガラス織布に含浸塗工し、150℃で5分間加熱乾燥して、樹脂固形分と溶融シリカとの合計量100質量部に対して樹脂固形分を50質量部含むプリプレグを得た。
1)吸水率
30mm×30mmのサンプルについて、JIS C6480に準拠して、プレッシャークッカー試験機(平山製作所製、型番:PC-3型)を用いて、121℃、2気圧で1、3、5時間処理後の吸水率を測定した。
2)吸湿耐熱性
50mm×50mmのサンプルの片面の半分以外の全銅箔をエッチング除去した試験片を、プレッシャークッカー試験機(平山製作所製、型番:PC-3型)を用いて、121℃、2気圧で3、4、5時間処理後、260℃のハンダ中に60秒浸漬した後の外観変化を目視で観察した。表3に示す結果は、(フクレが発生した試験片の数/(試験に供した試験片の数)である。
AMTCN50質量部を用いる代わりに、ビスフェノールA型シアン酸エステル化合物(製品名「CA210」、三菱ガス化学(株)製)50質量部を用い、オクチル酸亜鉛の使用量を0.05質量部から0.03質量部に変更したこと以外は、実施例11と同様にして、絶縁層厚さ0.8mmの金属箔張り積層板を得た。得られた金属箔張り積層板の評価結果を表3に示す。
AMTCN50質量部用いる代わりに、フェノールノボラック型シアン酸エステル化合物(製品名「Primaset PT-30」、ロンザジャパン(株)製)50質量部を用い、オクチル酸亜鉛の使用量を0.05質量部から0.04質量部に変更し、含侵塗工後の乾燥時の温度及び時間を150℃で5分間から、165℃で4分間に変更したこと以外は、実施例11と同様にして、絶縁層厚さ0.8mmの金属箔張り積層板を得た。得られた金属箔張り積層板の評価結果を表3に示す。
Claims (25)
- 前記式(1)において、Arがベンゼン環を示し、nが1であり、かつ、R2がメチル基、エチル基、プロピル基、イソプロピル基又はt-ブチル基を示す、請求項1に記載のシアン酸エステル化合物。
- Arがベンゼン環を示し、かつ、nが2又は3である、請求項1に記載のシアン酸エステル化合物。
- Arがベンゼン環以外の芳香環を示す、請求項1に記載のシアン酸エステル化合物。
- 前記式(1)で表されるシアン酸エステル化合物以外のシアン酸エステル化合物、エポキシ樹脂、オキセタン樹脂及び重合可能な不飽和基を有する化合物からなる群より選択される1種以上を更に含む、請求項5に記載の硬化性樹脂組成物。
- 前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環を示し、nが1であり、かつ、R2がメチル基、エチル基、プロピル基、イソプロピル基又はt-ブチル基を示す、請求項5又は6に記載の硬化性樹脂組成物。
- 前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環を示し、かつ、nが2又は3である、請求項5又は6に記載の硬化性樹脂組成物。
- 前記式(1)で表されるシアン酸エステル化合物において、Arがベンゼン環以外の芳香環を示す、請求項5又は6に記載の硬化性樹脂組成物。
- 請求項5~9のいずれか一項に記載の硬化性樹脂組成物を硬化させてなる、硬化物。
- 基材と、その基材に含浸又は塗布した請求項5~9のいずれか一項に記載の硬化性樹脂組成物と、を含む、構造材料用プリプレグ。
- 請求項5~9のいずれか一項に記載の硬化性樹脂組成物を含む、封止用材料。
- 請求項5~9のいずれか一項に記載の硬化性樹脂組成物を含む、繊維強化複合材料。
- 請求項5~9のいずれか一項に記載の硬化性樹脂組成物を含む、接着剤。
- プリント配線板用である、請求項5~9のいずれか1項に記載の硬化性樹脂組成物。
- エポキシ樹脂を更に含む、請求項15に記載の硬化性樹脂組成物。
- 前記式(1)で表されるシアン酸エステル化合物の含有量が、前記硬化性樹脂組成物中の樹脂固形分100質量部に対して、1~90質量部である、請求項16に記載の硬化性樹脂組成物。
- 無機充填材を更に含む、請求項16又は17に記載の硬化性樹脂組成物。
- 前記無機充填材の含有量が、前記硬化性樹脂組成物中の樹脂固形分100質量部に対して、50~1600質量部である、請求項18に記載の硬化性樹脂組成物。
- マレイミド化合物、フェノール樹脂及び前記式(1)で表されるシアン酸エステル化合物以外のシアン酸エステル化合物からなる群より選択される1種以上を更に含む、請求項16~19のいずれか一項に記載の硬化性樹脂組成物。
- 前記エポキシ樹脂が、ビフェニルアラルキル型エポキシ樹脂、ナフチレンエーテル型エポキシ樹脂、多官能フェノール型エポキシ樹脂及びナフタレン型エポキシ樹脂からなる群より選択される1種以上である、請求項16~20のいずれか一項に記載の硬化性樹脂組成物。
- 基材と、その基材に含浸又は塗布した請求項15~21のいずれか一項に記載の硬化性樹脂組成物と、を含む、プリプレグ。
- 1枚以上の請求項22に記載のプリプレグと、前記プリプレグの片面又は両面に配置した金属箔と、を含む金属箔張り積層板。
- 支持体と、その支持体の表面に請求項15~21のいずれか一項に記載の硬化性樹脂組成物を塗工及び乾燥させてなる樹脂層と、を含む積層シート。
- 絶縁層と、前記絶縁層の表面に形成された導体層とを含むプリント配線板であって、前記絶縁層が、請求項15~21のいずれか一項に記載の硬化性樹脂組成物を含むプリント配線板。
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US15/023,876 US9949369B2 (en) | 2013-10-25 | 2014-10-24 | Cyanate ester compound, curable resin composition containing the same, and hardened product thereof |
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JP2017007953A (ja) * | 2015-06-17 | 2017-01-12 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 |
WO2019198626A1 (ja) * | 2018-04-12 | 2019-10-17 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、樹脂組成物、硬化物、単層樹脂シート、積層樹脂シート、プリプレグ、金属箔張積層板、プリント配線板、封止用材料、繊維強化複合材料、及び接着剤 |
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JP2017007953A (ja) * | 2015-06-17 | 2017-01-12 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 |
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WO2019198626A1 (ja) * | 2018-04-12 | 2019-10-17 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、樹脂組成物、硬化物、単層樹脂シート、積層樹脂シート、プリプレグ、金属箔張積層板、プリント配線板、封止用材料、繊維強化複合材料、及び接着剤 |
JPWO2019198626A1 (ja) * | 2018-04-12 | 2021-05-20 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、樹脂組成物、硬化物、単層樹脂シート、積層樹脂シート、プリプレグ、金属箔張積層板、プリント配線板、封止用材料、繊維強化複合材料、及び接着剤 |
JP7305108B2 (ja) | 2018-04-12 | 2023-07-10 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、樹脂組成物、硬化物、単層樹脂シート、積層樹脂シート、プリプレグ、金属箔張積層板、プリント配線板、封止用材料、繊維強化複合材料、及び接着剤 |
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TW201522290A (zh) | 2015-06-16 |
CN105683154A (zh) | 2016-06-15 |
EP3061745A1 (en) | 2016-08-31 |
CN105683154B (zh) | 2018-03-16 |
SG11201602413UA (en) | 2016-05-30 |
US20160262263A1 (en) | 2016-09-08 |
TWI627154B (zh) | 2018-06-21 |
HK1222643A1 (zh) | 2017-07-07 |
KR20160079006A (ko) | 2016-07-05 |
KR102331386B1 (ko) | 2021-11-25 |
JP5825544B2 (ja) | 2015-12-02 |
JPWO2015060418A1 (ja) | 2017-03-09 |
EP3061745A4 (en) | 2017-07-12 |
US9949369B2 (en) | 2018-04-17 |
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