WO2014050789A1 - エポキシ化合物、その製造方法、エポキシ樹脂組成物およびその硬化物 - Google Patents
エポキシ化合物、その製造方法、エポキシ樹脂組成物およびその硬化物 Download PDFInfo
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- WO2014050789A1 WO2014050789A1 PCT/JP2013/075649 JP2013075649W WO2014050789A1 WO 2014050789 A1 WO2014050789 A1 WO 2014050789A1 JP 2013075649 W JP2013075649 W JP 2013075649W WO 2014050789 A1 WO2014050789 A1 WO 2014050789A1
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- binaphthalene
- tetraol
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/27—Condensation of epihalohydrins or halohydrins with compounds containing active hydrogen atoms
- C07D301/28—Condensation of epihalohydrins or halohydrins with compounds containing active hydrogen atoms by reaction with hydroxyl radicals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/12—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
- C07D303/18—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms by etherified hydroxyl radicals
- C07D303/20—Ethers with hydroxy compounds containing no oxirane rings
- C07D303/24—Ethers with hydroxy compounds containing no oxirane rings with polyhydroxy compounds
- C07D303/27—Ethers with hydroxy compounds containing no oxirane rings with polyhydroxy compounds having all hydroxyl radicals etherified with oxirane containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Definitions
- the present invention relates to an epoxy compound and a method for producing the same, which provide an epoxy resin composition having good solvent solubility, excellent heat resistance and moisture absorption resistance.
- An epoxy resin composition containing an epoxy compound and a curing agent thereof is excellent in various physical properties such as heat resistance and moisture absorption, so that it is a laminate resin material, an electrical insulating material, a semiconductor sealing material, a fiber reinforced composite material, a coating Widely used in materials, molding materials, adhesive materials, etc.
- Patent Document 1 A tetrafunctional naphthalene-based epoxy compound represented by the formula is known (Patent Document 1).
- the tetrafunctional naphthalene-based epoxy compound has a naphthalene skeleton having high heat resistance and high hydrophobicity, is tetrafunctional and has a high crosslinking density, and is excellent in symmetry as compared with a general phenol novolac epoxy compound. Since it has a molecular structure, the cured product exhibits extremely excellent heat resistance, moisture absorption resistance, and low thermal expansion. However, in recent years, higher performance is required in heat resistance, and further improvement is required. Furthermore, since the tetrafunctional naphthalene-based epoxy compound has low solubility in a solvent, for example, in the production of a printed wiring board, the properties of the cured product are not sufficiently exhibited.
- the naphthalene ring is a direct bond, not a bond via a methylene structure.
- an epoxy compound having a bi (dihydroxynaphthalene) structure that does not contain a methylene structure and is directly connected by a single bond in a dihydroxynaphthalene dimer (Patent Documents 2 to 5).
- the position of the hydroxyl group of dihydroxynaphthalene and the bonding position of the dimer are important factors that affect the physical properties such as the softening point of the epoxy resin, the solvent solubility, and the heat resistance of the cured product.
- the position of the hydroxyl group of dihydroxynaphthalene and the bonding position of the dimer are not specified, and no specific compound is described.
- the synthesis of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol generally uses a coupling reaction of dihydroxynaphthalene or a dihydroxynaphthalene derivative. In these reactions, 2 , 7-dihydroxynaphthalene selectively undergoes a coupling reaction at the 1,1 ′ position, so that high-purity [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol can be obtained. It is possible, and the resulting epoxy compound exhibits excellent performance such as a low softening point, a low melt viscosity, and a high solvent solubility. In addition, the epoxy compound obtained from [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol of the present invention has not been synthesized in the past and is a novel epoxy compound.
- [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol is very similar to 1,1-bis (2,7-dihydroxy-1-naphthyl) alkane described in Patent Document 6. Although it has a similar molecular structure, it does not have an unstable alkylene group under high heat conditions, and has a lower melting point than 1,1-bis (2,7-dihydroxy-1-naphthyl) alkane. Excellent handling at low temperatures.
- [1,1'-Binaphthalene] -2,2 ', 7,7'-tetraol can take the form of hydrates such as monohydrate and dihydrate in addition to anhydride. It is. The anhydride has a melting point of 218 ° C., whereas the monohydrate exhibits a softening point at 124 ° C. in addition to the melting point, so that the application can be expanded in a lower temperature region.
- Non-patent documents 1 to 3 describe synthesis examples of [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol.
- Products obtained by the oxidative coupling reaction of naphthalene-2,7-diol include [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol, unreacted raw materials and trimers. Since they are similar in structure to each other, they are close to dissolution behavior in solvents and difficult to separate.
- the problem to be solved by the present invention is that it has solvent solubility, low softening point, low melt viscosity and is easy to mold, and the resulting cured product exhibits excellent moisture absorption resistance and low thermal expansion.
- An object of the present invention is to provide an epoxy resin composition that realizes a cured product that is excellent in moldability and dimensional stability after molding, and also has good heat resistance, the cured product, and a novel epoxy compound that provides these performances.
- Another object of the present invention is to provide highly pure [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol and [1,1′-binaphthalene] -2,2 ′, 7,7 ′. -To provide a process for the production of tetraol monohydrate.
- the present invention relates to 2,2 ′, 7,7′-tetraglycidyloxy-1,1′-binaphthalene and [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- the present invention also includes a step of contacting a crude product obtained by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative with an aromatic solvent; Separating [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol dissolved in an aromatic solvent and insoluble matter; Removing the solvent from the [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol solution,
- the present invention provides a method for producing [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- the present invention further comprises a step of contacting a crude product obtained by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative with an aromatic solvent; Separating [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol dissolved in an aromatic solvent and insoluble matter; The obtained [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol solution was concentrated by heating, and [1,1′-binaphthalene] -2,2 ′, 7,7′-
- the present invention provides a method for producing [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol having a step of obtaining tetraol.
- the present invention provides a reaction of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol with water to obtain [1,1′-binaphthalene] -2,2 ′, Characterized in that it comprises a step of obtaining 7,7′-tetraol monohydrate,
- the present invention provides a method for producing [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol monohydrate.
- the resulting epoxy compound has a low softening point, a low melt viscosity and good solvent solubility, and the epoxy resin composition containing the epoxy compound has excellent heat resistance and moisture absorption performance.
- a cured product can be provided.
- FIG. 2 is a GPC chart of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol obtained in Example 1.
- FIG. 2 is an MS chart of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol obtained in Example 1.
- FIG. 4 is a GPC chart of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol obtained in Example 2.
- FIG. 4 is a GPC chart of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol obtained in Example 2.
- FIG. 10 is a GPC chart of Example 6.
- 7 is an NMR chart of Example 6.
- 6 is an MS spectrum of Example 6.
- epoxy compound of the present invention can be obtained, for example, by the process of the present invention in which [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol and epihalohydrin are reacted. Is represented by the following structural formula (1).
- [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol which is a raw material for the epoxy compound of the present invention, is obtained by a coupling reaction of dihydroxynaphthalene or a dihydroxynaphthalene derivative.
- the production method of the present invention is a reaction of [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol with epihalohydrin.
- epihalohydrin is added in a ratio of 2 to 10 times (molar basis) with respect to the number of moles of the phenolic hydroxyl group in the phenol compound, and further 0.9% relative to the number of moles of the phenolic hydroxyl group.
- a method of reacting at a temperature of 20 to 120 ° C. for 0.5 to 10 hours while adding or gradually adding up to 2.0 times (molar basis) of the basic catalyst is mentioned.
- the basic catalyst may be solid or an aqueous solution thereof.
- an aqueous solution When an aqueous solution is used, it is continuously added and water and epihalohydrins are continuously distilled from the reaction mixture under reduced pressure or normal pressure. Alternatively, the solution may be separated and further separated to remove water and the epihalohydrin is continuously returned to the reaction mixture.
- the epihalohydrin used is not particularly limited, and examples thereof include epichlorohydrin, epibromohydrin, ⁇ -methylepichlorohydrin, and the like. Of these, epichlorohydrin is preferred because it is easily available industrially.
- the basic catalyst include alkaline earth metal hydroxides, alkali metal carbonates, and alkali metal hydroxides.
- alkali metal hydroxides are preferable from the viewpoint of excellent catalytic activity of the epoxy resin synthesis reaction, and examples thereof include sodium hydroxide and potassium hydroxide.
- these basic catalysts may be used in the form of an aqueous solution of about 10 to 55% by mass or in the form of a solid.
- combination of an epoxy compound can be raised by using an organic solvent together.
- organic solvents examples include, but are not limited to, ketones such as acetone and methyl ethyl ketone, alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- examples thereof include cellosolves such as cellosolve and ethyl cellosolve, ethers such as tetrahydrofuran, 1,4-dioxane, 1,3-dioxane, and diethoxyethane, and aprotic polar solvents such as acetonitrile, dimethyl sulfoxide, and dimethylformamide.
- ketones such as acetone and methyl ethyl ketone
- alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- the amount used is preferably 0.1 to 3.0 parts by mass with respect to 100 parts by mass of the epoxy resin used.
- the produced salt is removed by filtration, washing with water, and the solvent, such as toluene and methyl isobutyl ketone, is distilled off under heating and reduced pressure to obtain the desired novel epoxy compound of the present invention.
- [Tetraol] [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol which is a raw material of the epoxy compound of the present invention, may be produced by a known and conventional method.
- the production method of '-binaphthalene] -2,2', 7,7'-tetraol is obtained by subjecting a crude product obtained by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative, It is characterized by a purification process using an aromatic solvent to separate [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol dissolved in the aromatic solvent and insoluble matter, [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol can be obtained with high purity.
- the purification step includes [1,1′-binaphthalene] -2,2 ′, 7, obtained by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative.
- the crude product mainly composed of 7′-tetraol is brought into contact with an aromatic solvent and refluxed to dissolve [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol. After cooling down to room temperature and precipitating dissolved impurities, the solution of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol was separated from the insoluble impurities.
- Products obtained by dimerization of naphthalene-2,7-diol or naphthalene-2,7-diol derivatives include [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- unreacted raw materials, trimers, tetramers, etc. are all compounds having a similar structure, and crystallinity and solubility in a solvent exhibit very similar properties. Separation using a reprecipitation method is difficult.
- aromatic solvents have low solubility of these compounds, there is a slight solubility difference between [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol and other by-products.
- Naphthalene-2,7-diol or naphthalene-2,7-diol derivative, [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol as a raw material for the above aromatic solvent
- the solubility decreases as the molecular weight of the trimer and tetramer increases, and it becomes insoluble at the pentamer or higher.
- the aromatic solvent examples include benzene; alkylbenzenes such as toluene, xylene, ethylbenzene and cumene; alkoxybenzenes such as anisole and phenetole, and preferably toluene or xylene.
- the solvent to be used is preferably used alone or as a mixture of aromatic solvents, but in the range not impairing the effects of the present invention, alcohol solvents, ketone solvents, ester solvents, etc. May be mixed.
- the amount of the aromatic solvent used is within an appropriate range determined by purity and yield, and a smaller amount of solvent is used when purity is important, and a larger amount of solvent is used when yield is important. use. If it falls outside the appropriate range and is too little, [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol precipitates, and if too much, [1,1′-binaphthalene] -2, Impurities that are less soluble than 2 ', 7,7'-tetraol are dissolved and suitable [1,1'-binaphthalene] -2,2', 7,7'-tetraol cannot be obtained.
- the amount of the group solvent used is preferably 50 to 150 mL, more preferably 80 to 100 mL based on 1 g of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol solution By removing the solution from the obtained [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol solution by a known and usual method, [1,1′-binaphthalene] -2, 2 ', 7,7'-tetraol can be obtained.
- the method for removing the solution is not particularly limited, and methods such as vacuum drying, heat drying, and spray drying can be used.
- the purification step includes [1,1′-binaphthalene] -2,2 ′, 7, obtained by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative.
- the crude product mainly composed of 7'-tetraol is mixed with an aromatic solvent and refluxed to dissolve [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol.
- the solution obtained by separating insolubles is heated and concentrated to precipitate a solid of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol. It is possible to precipitate only [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol present in a large amount with a small amount of impurities dissolved, and a high purity [1,1 '-Binaphthalene] -2,2', 7,7'-tetraol can be obtained and has a higher purity than that obtained by methods other than heat concentration, that is, low-temperature concentration, reprecipitation, or recrystallization.
- filtration is not limited. Method or centrifugal separation method.
- the temperature of the mixed solution and the filter is 60 ° C. or higher, preferably 80 ° C. or higher, more preferably 100 ° C. or higher, and the upper limit is the boiling point of the aromatic solvent.
- [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol obtained by heat concentration can be obtained by removing a small amount of remaining aromatic solvent by vacuum drying or heat drying. Good.
- [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol obtained by the above production method is brought into contact with water to obtain high-purity [1,1′-binaphthalene].
- -2,2 ', 7,7'-tetraol monohydrate can be prepared.
- the method for contacting [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol with water is [1,1′-binaphthalene] -2,2 ′, 7,7′-.
- tetraol can be uniformly contacted with water.
- [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol is stirred in water.
- [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol powder may be sprayed with water.
- the contact product of [1,1'-binaphthalene] -2,2 ', 7,7'-tetraol and water is preferably dried at normal pressure.
- the drying temperature is preferably in the range of 40 to 130 ° C, particularly preferably 80 to 100 ° C.
- the drying time varies depending on the water content, but it may be dried for about 10 days at 80 ° C. and about 20 hours at 100 ° C.
- [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol is precipitated
- [1,1′-binaphthalene] -2,2 ′, 7 , 7'-tetraol can be produced by various reactions for dimerizing naphthalene-2,7-diol or naphthalene-2,7-diol derivatives, such as naphthalene-2,7-diol, naphthalene-2,7 -Diol halides, silane derivatives, tin derivatives, Lithium Homo-coupling reaction of sulfonic acid derivatives such as chloromethane sulfonic acid derivatives, boron derivative derivatives, naphthalene-2,7-diol, naphthalene-2,7-diol halides, silane derivatives, tin derivatives, A crude product obtained by a coupling reaction or the like combining any two of lithium
- Suitable for purification particularly suitable for purification of crude product obtained by oxidative coupling reaction of naphthalene-2,7-diol, which can be easily dimerized without derivatization of naphthalene-2,7-diol. Yes.
- the reaction catalyst used is a metal chloride such as iron, copper, silver, nickel, magnesium, cobalt, manganese, titanium, ruthenium, palladium, rhodium, Bromide, hydroxide, sulfate, nitrate, hydrogen sulfate, acetate, oxide, or double salt such as ammonium iron sulfate and copper hydrogen chloride, or copper salt and amine such as copper chloride-tetramethylethylenediamine complex Or the above metal salts supported on silica, alumina, titanium oxide, peroxides such as di-t-butyl peroxide, (NO) -ruthenium salen complexes, oxovanadium complexes, etc. These can be used alone or in combination.
- a metal chloride such as iron, copper, silver, nickel, magnesium, cobalt, manganese, titanium, ruthenium, palladium, rhodium, Bromide, hydroxide, sulfate, nitrate
- the oxidative coupling reaction of naphthalene-2,7-diol can be performed without a solvent or in a solvent.
- a solvent water or alcohol organic solvents such as methanol and ethanol, ester organic solvents such as ethyl acetate and propyl acetate, halogen organic solvents such as dichloromethane and 1,2-dichloroethane, benzene, toluene, Aromatic organic solvents such as chlorobenzene, ketone organic solvents such as acetone and 2-butanone, nitrile organic solvents such as acetonitrile and propionitrile, ether organic solvents such as diethyl ether, tetrahydrofuran and 1,4-dioxane, It can be selected from amide organic solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide and
- the reaction using ferric chloride hexahydrate as a catalyst involves reacting naphthalene-2,7-diol with ferric chloride hexahydrate in a mixed solvent of water and a hydrophilic organic solvent. , [1,1′-Binaphthalene] -2,2 ′, 7,7′-tetraol.
- ferric chloride hexahydrate is not particularly limited as long as it is 0.5 or more of the theoretical required amount as a molar ratio with respect to naphthalene-2,7-diol as a starting material. Since the reactivity does not change even if there is a large amount, it is preferably used in an amount in the range of 1.0 to 2.0.
- the reaction may be performed in a single solvent of water, but since a product insoluble in water aggregates to form a lump and makes stirring difficult, a hydrophilic organic solvent is added, It is preferable to swell and disperse the aggregate to facilitate stirring.
- the hydrophilic organic solvent is not particularly limited as long as it is compatible with water and can dissolve the product.
- alcoholic solvents such as methanol, ethanol, 1-propanol, and 2-propanol are used.
- Amide organic solvents such as N, N-dimethylacetamide and N-methyl-2-pyrrolidone, dimethyl sulfoxide and the like, or a mixed solvent thereof.
- Preferable examples of the hydrophilic organic solvent are alcohol organic solvents, and more preferably methanol, ethanol and 2-propanol.
- each charging method of naphthalene-2,7-diol, ferric chloride hexahydrate, water, and hydrophilic organic solvent is not particularly limited.
- a method of adding a solution or a mixed solution of water and a hydrophilic polar solvent 1) Ferric chloride hexahydrate in a reaction vessel in which 2,7-dihydroxynaphthalene powder, a solution of a hydrophilic polar solvent, or a mixed solution of water and a hydrophilic polar solvent is mixed and stirred.
- a method in which the product is added as an aqueous solution or a mixed solution of water and a hydrophilic polar solvent is preferred.
- the amount added later may be added all at once, or may be added in portions, and in the case of a solution, it may be added dropwise continuously. Preference is given to divided addition or continuous dropping.
- reaction temperature when the reaction temperature is usually 0 to 90 ° C., [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol is obtained as a main product, but a by-product
- it is preferably 0 ° C. to 60 ° C., more preferably 20 ° C. to 40 ° C., and the reaction time is 0.5 hours to 10 hours, preferably 1 to 6 hours.
- an organic substance containing [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol and an iron salt can be separated by an extraction step using a hydrophobic organic solvent.
- the organic solvent used in the extraction step is not particularly limited as long as it is a hydrophobic solvent and can dissolve [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- Alcohol solvents such as butanol and isobutanol, ester solvents such as methyl acetate and ethyl acetate, ketone solvents such as methyl ethyl ketone, and combinations thereof, preferably ethyl acetate.
- the [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol dissolved in the aromatic solvent and the insoluble material are separated using the aromatic solvent of the present invention. Or by separating [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol dissolved in the aromatic solvent and the insoluble material using the aromatic solvent.
- the extraction solvent is an aromatic organic solvent. The process of substituting is necessary.
- toluene may be added to the previously removed composition organism, and if the boiling point of the extraction solvent is lower than the boiling point of the aromatic solvent, the extraction solution It is also possible to add an aromatic solvent to and gradually remove the extraction solvent under heating and reflux.
- the epoxy resin composition of the present invention contains the novel epoxy compound detailed above and a curing agent, but the epoxy compound is used as a reaction product during production containing an oligomer component. good.
- the curing agent used here is not particularly limited, and any compound commonly used as a curing agent for ordinary epoxy resins can be used.
- amine compounds, amide compounds, acid anhydride compounds examples include phenolic compounds.
- examples of the amine compound include diaminodiphenylmethane, diethylenetriamine, triethylenetetramine, diaminodiphenylsulfone, isophoronediamine, imidazole, BF3-amine complex, and guanidine derivatives.
- Examples of the amide compound include dicyandiamide, Examples include polyamide resins synthesized from dimer of linolenic acid and ethylenediamine.
- acid anhydride compounds include phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, maleic anhydride, and tetrahydrophthalic anhydride.
- phenolic compounds include phenol novolac resins, cresol novolac resins, Aromatic hydrocarbon formaldehyde resin modified phenolic resin, dicyclopentadiene phenol addition type resin, phenol aralkyl resin (Zyloc resin), polyhydric phenol novolak resin synthesized from formaldehyde and polyhydroxy compound represented by resorcin novolac resin, naphthol Aralkyl resin, trimethylol methane resin, tetraphenylol ethane resin, naphthol novolak resin, naphthol-phenol
- alkoxy group-containing aromatic ring-modified novolak resins polyhydric phenol in which phenol nuclei and alkoxy group-containing aromatic rings are connected with formaldehyde) Compound
- curing agents may be used alone or in combination of two or more.
- the blending amount of the epoxy resin and the curing agent in the epoxy resin composition of the present invention is not particularly limited, but from the point that the cured product characteristics obtained are good, the total of 1 equivalent of epoxy groups of the epoxy resin. On the other hand, the amount is preferably such that the active group in the curing agent is 0.7 to 1.5 equivalents.
- a hardening accelerator can also be suitably used together with the epoxy resin composition of this invention as needed.
- Various curing accelerators can be used, and examples thereof include phosphorus compounds, tertiary amines, imidazoles, organic acid metal salts, Lewis acids, and amine complex salts.
- the above-described epoxy compound of the present invention may be used alone as an epoxy resin component, but if necessary, other known and commonly used epoxy resins are used in combination with the epoxy compound of the present invention. May be used.
- the epoxy resin composition of the present invention described in detail is characterized by exhibiting excellent solvent solubility as described above. Therefore, the epoxy resin composition may contain an organic solvent in addition to the above components.
- the organic solvent that can be used here include ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone, and acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate.
- amide solvents such as dimethylformamide, dimethylacetamide, and N-methylpyrrolidone
- carbitol solvents such as cellosolve and butyl carbitol
- aromatic hydrocarbon solvents such as toluene and xylene, and the like.
- various known and conventional additives such as a filler, a colorant, a flame retardant, a release agent, or a silane coupling agent may be added as necessary.
- Typical examples of the filler include silica, alumina, silicon nitride, and aluminum hydroxide, typical examples of the colorant include carbon black, and typical examples of the flame retardant include trioxide.
- Typical examples of the release agent such as antimony include carnauba wax, and typical examples of the silane coupling agent include aminosilane and epoxysilane.
- the epoxy resin composition of the present invention can be obtained by uniformly mixing the above-described components.
- the epoxy resin composition of the present invention containing the epoxy compound of the present invention, a curing agent, and, if necessary, a curing accelerator can be easily made into a cured product by a method similar to a conventionally known method.
- cured material molding hardened
- the epoxy resin composition of the present invention is used for applications such as laminate resin materials, electrical insulating materials, semiconductor sealing materials, fiber reinforced composite materials, coating materials, molding materials, conductive adhesives and other adhesive materials. it can.
- the epoxy compound of the present invention has a naphthalene skeleton that has high heat resistance and high hydrophobicity, is tetrafunctional and has a high crosslinking density, and has a molecular structure with excellent symmetry. , Water resistance and low thermal expansion can be satisfied.
- a naphthalene skeleton that has high heat resistance and high hydrophobicity, is tetrafunctional and has a high crosslinking density, and has a molecular structure with excellent symmetry. , Water resistance and low thermal expansion can be satisfied.
- 1,1′-alkylenebis (2,7-dihydroxynaphthalene) obtained from the reaction product of dihydroxynaphthalene and formaldehyde described in Japanese Patent No.
- the epoxy compound of the invention maintains a low thermal expansion property derived from a low moisture absorption rate and a high crosslinking density derived from a naphthalene skeleton, and does not have a relatively weak alkylene structure at a high temperature, so it has better heat resistance, a low melt viscosity, Good solvent solubility.
- melt viscosity is decreased from 91 ° C. to 61 ° C., workability is improved and low melting, which is difficult with a tetrafunctional glycidyl etherified product of 1,1′-alkylenebis (2,7-dihydroxynaphthalene).
- a viscosity or liquid epoxy resin composition can be produced.
- a tetrafunctional glycidyl etherified product of 1,1′-alkylenebis (2,7-dihydroxynaphthalene) becomes a solid epoxy resin composition.
- the epoxy compound can produce a liquid epoxy resin composition.
- the epoxy compound of the present invention since the epoxy compound of the present invention has good solvent solubility, it can be suitably used for applications that use a solvent such as an insulating material for printed wiring boards, and can be applied to more applications.
- melt viscosity at 150 ° C. and GPC and MS spectra were measured under the following conditions.
- Softening point measurement method Measured by the ball and ring (B & R) method using glycerin as a heat medium in accordance with JIS K7234.
- GPC The measurement conditions are as follows.
- Measuring device “HLC-8220 GPC” manufactured by Tosoh Corporation Column: Guard column “HXL-L” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + Tosoh Corporation “TSK-GEL G3000HXL” + “TSK-GEL G4000HXL” manufactured by Tosoh Corporation Detector: RI (differential refractometer) Data processing: “GPC-8020 Model II version 4.10” manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Mobile phase: Tetrahydrofuran Flow rate: 1.0 ml / min Standard: The following monodisperse polystyrene having a known molecular weight was used in accordance with the measurement manual of “GPC-8020 Model II version 4.10”.
- NMR NMR LA300 manufactured by JEOL Ltd.
- Solvent Acetone-d6 5
- MS Gas chromatograph time-of-flight mass spectrometer JMS-T100GC manufactured by JEOL Ltd.
- Ionization mode FD
- Solvent Tetrahydrofuran Sample concentration: 2%
- Example 1 A flask equipped with a thermometer, a stirrer, and a reflux condenser was charged with 139 g (0.5 mol) of iron (III) chloride hexahydrate and 1330 mL of water while purging nitrogen gas, and the inside of the reaction vessel was stirred while stirring. After purging with nitrogen, a solution prepared by dissolving 82 g (0.5 mol) of naphthalene-2,7-diol in 190 mL of isopropyl alcohol in advance was added, and the mixture was stirred at 40 ° C. for 30 minutes.
- the solution is transferred to a SUS vessel equipped with a thermometer, a stirrer, and a Dean-Stark trap, and after adding 5 L of toluene, acetic acid is heated by heating below the boiling point of toluene.
- the ethyl was evaporated and the solvent was replaced from ethyl acetate to toluene.
- the insoluble matter was removed from Advantech's quantitative filter paper no. Filtered off using 5C. The filtrate was evaporated under vacuum, dried at 110 ° C.
- FIG. 1 and FIG. 2 show a GPC chart and an MS spectrum chart of the obtained compound. From the MS spectrum chart, the obtained compound contained [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol, as well as by-products and a small amount of naphthalene-2,7-diol as a raw material. Although observed, the purity determined from the GPC chart was 98%. Further, by differential scanning calorimetry of the obtained compound, it was confirmed that this compound was an anhydride having a melting point of 218 ° C.
- Example 2 An oxidative coupling reaction, solvent extraction, and solvent replacement were performed under the same conditions as in Example 1. After cooling the toluene solution to room temperature, insolubles were filtered off. The filtrate is transferred to a SUS vessel equipped with a thermometer, stirrer, and Dean-Stark trap, heated to a temperature above the boiling point while stirring, and concentrated by distilling off toluene to about 500 mL, [1,1 Crystals of '-binaphthalene] -2,2', 7,7'-tetraol were precipitated. The precipitate and solvent were filtered by hot filtration at a temperature of 80 ° C. or higher and then dried at 110 ° C.
- FIG. 3 and FIG. 4 show the GPC chart and MS spectrum chart of the obtained compound. From the MS spectrum chart, the obtained compound was [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol alone, and the purity determined from the GPC chart was 99%. Further, by differential scanning calorimetry of the obtained compound, it was confirmed that this compound was an anhydride having a melting point of 218 ° C.
- Example 3 The oxidative coupling reaction and solvent extraction were performed under the same conditions as in Example 1. After distilling off ethyl acetate under vacuum, benzene is added to the resulting crude product, and the mixture is transferred to a SUS vessel equipped with a thermometer, stirrer, and Dean-Stark trap, and the total amount of benzene is 5 L. And then refluxed. After cooling the benzene solution to room temperature, insolubles were filtered off. The filtrate was evaporated under vacuum, dried at 110 ° C. for 5 hours, and 70 g (yield) of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol as a main component. 87%). The purity obtained from the GPC chart of the obtained compound was 97%.
- Example 4 The oxidative coupling reaction and solvent extraction were performed under the same conditions as in Example 1. After the solvent was distilled off to about 200 mL under vacuum, the solution was transferred to a SUS container equipped with a thermometer, a stirrer, and a Dean-Stark trap, 5 L of xylene was added, and then the solvent was replaced from ethyl acetate to xylene. After the solution was cooled to room temperature, insoluble matters were filtered off. The filtrate was evaporated under vacuum, dried at 110 ° C. for 5 hours, and 68 g of a solid composed mainly of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol (yield 84%). The purity obtained from the GPC chart of the obtained compound was 98%.
- Example 5 A flask equipped with a thermometer, a stirrer and a reflux condenser was charged with 50 g of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol crushed in a mortar and 100 g of water at 60 ° C. Stir for 30 minutes. The suspension was filtered, and the residue was dried at 90 ° C. for 5 days to obtain 52 g of [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol monohydrate (yield) 99%). By differential scanning calorimetry of the obtained compound, it was a compound having a melting point of 220 ° C. and a softening point near 124 ° C., and was confirmed to be a monohydrate from an exothermic peak at 185 ° C. that released crystal water. .
- the reaction solution was transferred to a separatory funnel, the organic layer was separated, and the aqueous layer was further extracted with ethyl acetate. The combined organic layers were washed with saturated brine and concentrated under vacuum.
- the obtained product is a mixture of a dimer, a trimer and a tetramer, each of which has a complicated structure in which naphthalene is bonded at the 1,1 'position and at other positions. It was a mixture, and the dimer could not be taken out with high purity, and was not suitable for the raw material of the epoxy resin. This result shows the importance of the position of the hydroxy group of dihydroxynaphthalene.
- Example 6 A flask equipped with a thermometer, a stirrer, and a reflux condenser was charged with 139 g (0.5 mol) of iron (III) chloride hexahydrate and 1330 mL of water while purging nitrogen gas, and the inside of the reaction vessel was stirred while stirring. After purging with nitrogen, a solution in which 82 g (0.5 mol) of 2,7-dihydroxynaphthalene was previously dissolved in 190 mL of isopropyl alcohol was added, and the mixture was stirred at 40 ° C. for 30 minutes.
- the filtrate is transferred to a SUS vessel equipped with a thermometer, stirrer, and Dean-Stark trap, heated to a temperature above the boiling point while stirring, and concentrated by distilling off toluene to about 500 mL, [1,1 Crystals of '-binaphthalene] -2,2', 7,7'-tetraol were precipitated.
- the precipitate and solvent were filtered by hot filtration at a temperature of 80 ° C. or higher and then dried at 110 ° C. for 5 hours to obtain [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol.
- the yield was 53 g (68% yield).
- the obtained [1,1′-binaphthalene] -2,2 ′, 7,7′-tetraol was confirmed by GPC and MS to be free of multimerized components and high purity.
- the system was dehydrated by azeotropic distillation, and after microfiltration, the solvent was distilled off under reduced pressure to obtain the desired epoxy resin 2,2 ′, 7,7′-tetraglycidyloxy- [1,1 ′. -Binaphthalene] (A-1) was obtained in an amount of 135 g.
- the resulting epoxy resin (A-1) had a softening point of 61 ° C. (B & R method), a melt viscosity (measurement method: ICI viscometer method, measurement temperature: 150 ° C.) of 1.1 dPa ⁇ s, and an epoxy equivalent of 144 g / Equivalent.
- the GPC chart of the obtained epoxy resin is shown in FIG.
- Example 7 and Comparative Example 4 Epoxy resin (A-1) of the present invention and comparative epoxy resin (A-2) obtained in Example 7 [tetrafunctional naphthalene-based epoxy resin represented by the following structural formula (manufactured by DIC Corporation, “ Epicron HP-4700 ", softening point 91 ° C, 150 ° C melt viscosity 4.5 ps, epoxy equivalent 166 g / equivalent)]
- composition shown in Table 1 using a phenol novolac type phenol resin (“Phenolite TD-2131” manufactured by DIC Corporation, hydroxyl group equivalent of 104 g / equivalent) as a curing agent and triphenylphosphine (TPP) as a curing accelerator. Blended, poured into a 11 cm x 9 cm x 2.4 mm mold, molded with a press at 150 ° C for 10 minutes, then removed from the mold and then cured at 175 ° C for 5 hours to create The cured product was evaluated for heat resistance, linear expansion coefficient, and hygroscopicity. The solvent solubility of the epoxy resin (A-1) and the epoxy resin (A-2) was measured by the following method. The results are shown in Table 1.
- Measurement condition Measurement temperature: room temperature to 500 ° C Measurement atmosphere: Nitrogen heating rate: 10 ° C / min ⁇ Linear expansion coefficient> Thermomechanical analysis was performed in a compression mode using a thermomechanical analyzer (TMA: Seiko Instruments SS-6100). Measurement conditions Measurement weight: 88.8mN Temperature increase rate: 2 times at 3 ° C / min Measurement temperature range: -50 ° C to 300 ° C The measurement under the above conditions was performed twice for the same sample, and the average expansion coefficient in the temperature range from 25 ° C. to 280 ° C. in the second measurement was evaluated as the linear expansion coefficient.
- ⁇ Hygroscopic rate The moisture absorption rate was calculated from the rate of weight increase after moisture absorption for 300 hours under a moisture absorption condition of 85 ° C./85% RH in a constant temperature and humidity device.
- ⁇ Solvent solubility 10 parts of epoxy resin and 4.3 parts of methyl ethyl ketone were dissolved in a sealed state at 60 ° C. in a sample bottle. Then, it cooled to 25 degreeC and evaluated whether the crystal
- the epoxy compound of the present invention has a low softening point temperature and a low melt viscosity, and its cured product has a low moisture absorption and a low coefficient of thermal expansion characteristic of naphthalene-based tetrafunctional epoxy compounds. It is clear that the solvent solubility is good and the heat resistance is extremely excellent while maintaining.
- the epoxy compound, epoxy resin composition, and cured product of the present invention are a laminate resin material, an electrical insulating material, a semiconductor sealing material, a fiber reinforced composite material, a coating material, a molding material, a conductive adhesive, and other adhesives. It can utilize suitably for uses, such as material of this.
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Description
芳香族系溶媒に溶解した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと不溶物とに分離する工程と、
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール溶液から溶媒を除去する工程とを有することを特徴とする、
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法を提供するものである。
芳香族系溶媒に溶解した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと不溶物とに分離する工程と、
得られた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール溶液を加熱濃縮して、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを得る工程とを有する、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法を提供するものである。
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール一水和物の製造方法を提供するものである。
本発明のエポキシ化合物は、例えば、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールとエピハロヒドリンを反応させる本発明の製法によって得ることができるものであり、具体的には、次に構造式(1)で示されるものである。
以下に、本発明のエポキシ化合物の製法を詳述するが、本発明のエポキシ化合物の製造方法はこれらに限定されるものではない。
本発明のエポキシ化合物の原料である[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールは、公知慣用の方法で製造すればよいが、本発明の[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法は、ナフタレン-2,7-ジオールまたはナフタレン-2,7-ジオール誘導体の二量化反応によって得られる粗生成物を、芳香族系溶媒を用いて、芳香族系溶媒に溶解した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと不溶物とを分離する精製工程を特徴としており、高い純度で[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを得ることができることを特徴とする。
1) 塩化第二鉄六水和物と水もしくは水と親水性極性溶媒の混合溶液が混合撹拌されている反応容器の中に、2,7-ジヒドロキシナフタレンを粉末、もしくは、親水性極性溶媒の溶液、もしくは、水と親水性極性溶媒の混合溶液の状態で添加する方法、
1) 2,7-ジヒドロキシナフタレンの粉末、もしくは、親水性極性溶媒の溶液、もしくは、水と親水性極性溶媒の混合溶液が混合撹拌されている反応容器の中に、塩化第二鉄六水和物を水溶液もしくは水と親水性極性溶媒の混合溶液として添加する方法
が好ましい。
次に、本発明のエポキシ樹脂組成物は、以上詳述した新規エポキシ化合物と硬化剤とを含有するものであるが、該エポキシ化合物は、オリゴマー成分を含有する製造時の反応生成物として用いて良い。
また必要に応じて本発明のエポキシ樹脂組成物に硬化促進剤を適宜併用することもできる。前記硬化促進剤としては種々のものが使用できるが、例えば、リン系化合物、第3級アミン、イミダゾール、有機酸金属塩、ルイス酸、アミン錯塩等が挙げられる。
本発明のエポキシ樹脂組成物は、上記した各成分を均一に混合することにより得られる。本発明のエポキシ化合物、硬化剤、さらに必要により硬化促進剤を含有する本発明のエポキシ樹脂組成物は、従来知られている方法と同様の方法で容易に硬化物とすることができる。該硬化物としては、積層物、注型物、接着層、塗膜、フィルム等の成型硬化物が挙げられる。
1)150℃における溶融粘度:ASTM D4287に準拠し、以下の機器で測定した。
機器名 :(株)コーデックス製 MODEL CV-1S
コーン : 10dPa.s用
2)軟化点測定法:JIS K7234に準拠し、グリセリンを熱媒とし、ボール&リング(B&R)法にて測定した。
機器名 :(株)メイテック製 ASP-M2型
昇温速度:5/min
3)GPC:測定条件は以下の通り。
測定装置 :東ソー株式会社製「HLC-8220 GPC」、
カラム:東ソー株式会社製ガードカラム「HXL-L」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G3000HXL」
+東ソー株式会社製「TSK-GEL G4000HXL」
検出器: RI(示差屈折率計)
データ処理:東ソー株式会社製「GPC-8020モデルIIバージョン4.10」
測定条件: カラム温度 40℃
移動相: テトラヒドロフラン
流速: 1.0ml/分
標準 : 前記「GPC-8020モデルIIバージョン4.10」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
(使用ポリスチレン)
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
試料 : 樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(50μl)。
4)NMR:日本電子株式会社製 NMR LA300
溶媒 :アセトン‐d6
5)MS :日本電子株式会社製 ガスクロマトグラフ飛行時間質量分析計JMS-T100GC
イオン化モード:FD
カソード電圧:-10kV
エミッタ電流:0mA → 40mA[25.6 mA/min.]
溶媒:テトラヒドロフラン
サンプル濃度:2%
温度計、撹拌機、還流冷却器を取り付けたフラスコに、窒素ガスパージを施しながら、塩化鉄(III)六水和物139g(0.5モル)、水1330mLを仕込み、攪拌しながら反応容器内を窒素置換した後、ナフタレン-2,7-ジオール82g(0.5モル)をイソプロピルアルコール190mLにあらかじめ溶解した溶液を加え、40℃で30分撹拌した。塩化鉄(III)六水和物139g(0.5モル)及び水664mL、イソプロピルアルコール94mLの混合溶液を加え、40℃まで昇温してから、さらに1時間撹拌した。反応液に酢酸エチル500mLを加え、10分撹拌した。反応液を分液漏斗に移し、有機層を分離した後、さらに、水層を酢酸エチルで抽出した。合わせた有機層を飽和食塩水で洗浄した。真空下で溶媒を200mL程度になるまで留去した後、溶液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、トルエン5Lを加えた後、トルエンの沸点以下で加熱することで酢酸エチルを蒸発させ、溶媒を酢酸エチルからトルエンに置換した。トルエン溶液を室温まで冷却した後、不溶物をアドバンテック社製の定量ろ紙 No.5Cを用いてろ別した。ろ液を、真空下で溶媒留去し、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールが主成分の固体66g(収率82%)を得た。図1および図2に得られた化合物のGPCチャートおよびMSスペクトルチャートを示す。MSスペクトルチャートから、得られた化合物は[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの他、副生成物および原料であるナフタレン-2,7-ジオールが少量観測されたものの、GPCチャートから求めた純度は98%であった。また、得られた化合物の示差走査熱量測定により、この化合物は融点218℃の無水物であることが確認できた。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出、溶媒置換を行い、トルエン溶液を室温まで冷却した後、不溶物をろ別した。ろ液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、撹拌しながら、沸点以上の温度に加熱し、トルエンを500mL程度になるまで留去することで濃縮し、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの結晶を析出させた。析出物と溶媒を80℃以上の温度での熱時ろ過でろ取した後、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを収量53g(収率68%)で得た。図3および図4に得られた化合物のGPCチャートおよびMSスペクトルチャートを示す。MSスペクトルチャートから、得られた化合物は[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール単品であり、GPCチャートから求めた純度は99%であった。また、得られた化合物の示差走査熱量測定により、この化合物は融点218℃の無水物であることが確認できた。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出を行った。酢酸エチルを真空下で留去した後、得られた粗生成物にベンゼンを加え、その混合液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、さらにベンゼンを全量で5Lになるように加え還流した。ベンゼン溶液を室温まで冷却した後、不溶物をろ別した。ろ液を、真空下で溶媒留去し、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールが主成分の固体70g(収率87%)を得た。得られた化合物のGPCチャートから求めた純度は97%であった。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出を行った。真空下で溶媒を200mL程度になるまで留去した後、溶液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、キシレン5Lを加えた後、溶媒を酢酸エチルからキシレンに置換した。溶液を室温まで冷却した後、不溶物をろ別した。ろ液を、真空下で溶媒留去し、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールが主成分の固体68g(収率84%)を得た。得られた化合物のGPCチャートから求めた純度は98%であった。
温度計、撹拌機、還流冷却器を取り付けたフラスコに、乳鉢で粉砕した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール50g、水100gを仕込み、60℃で30分撹拌した。懸濁液をろ過し、残渣を90℃で5日間乾燥して、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール一水和物52gを得た(収率99%)。得られた化合物の示差走査熱量測定により、220℃の融点と124℃付近の軟化点を持つ化合物であり、結晶水を放出する185℃の発熱ピークから、一水和物であることを確認した。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出を行い、酢酸エチルを真空下で留去した。得られた粗生成物のMS分析を行った結果、得られた粗生成物は[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール、原料、多量体およびその他の副生成物の混合物であることが判明し、GPCチャートのピーク面積から求めた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの分子量領域の純度は76%であった。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出を行った。酢酸エチルを真空下で留去した後、得られた粗生成物にエタノールを加え、
その混合液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、さらにエタノールを全量で500mLになるように加え還流
した。エタノール溶液を室温まで冷却した後、不溶物をろ別した。ろ液を、真空下で溶媒留去し、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールが主成分の固体80g(収率99%)を得た。得られた化合物のGPCチャートから求めた純度は77%であった。
実施例1と同様の条件で酸化カップリング反応及び溶媒抽出を行った。酢酸エチルを真空下で留去した後、得られた粗生成物にヘキサンを加え、その混合液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、さらにヘキサンを全量で5Lになるように加え還流した。ヘキサン溶液を室温まで冷却した後、不溶物をろ別した。ろ液を、真空下で溶媒留去し、110℃で5時間乾燥さたところ、得られた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールが主成分の固体は2g(収率3%)であった。〔1,1’-ビナフタレン〕]-2,2’,7,7’-テトラオールはヘキサンへの溶解度が低いため、不純物との分離が困難であった。
温度計、撹拌機、還流冷却器を取り付けたフラスコに、窒素ガスパージを施しながら、塩化鉄(III)六水和物139g(0.5モル)、水1330mLを仕込み、攪拌しながら反応容器内を窒素置換した後、ナフタレン-1,6-ジオール82g(0.5モル)をイソプロピルアルコール190mLにあらかじめ溶解した溶液を加え、40℃で1時間撹拌した。反応液に酢酸エチル500mLを加え、10分撹拌した。反応液を分液漏斗に移し、有機層を分離した後、さらに、水層を酢酸エチルで抽出した。合わせた有機層を飽和食塩水で洗浄し、真空下で濃縮した。得られた生成物は、2量体、3量体、4量体の混合物であり、さらにそれぞれがナフタレンが1,1’位で結合したものとそれ以外の位置で結合したものとの複雑な混合物であり、2量体を高純度に取り出すことはできず、エポキシ樹脂の原料に適さないものであった。この結果は、ジヒドロキシナフタレンのヒドロキシ基の位置の重要性を示している。
温度計、撹拌機、還流冷却器を取り付けたフラスコに、窒素ガスパージを施しながら、塩化鉄(III)六水和物139g(0.5モル)、水1330mLを仕込み、攪拌しながら反応容器内を窒素置換した後、2,7-ジヒドロキシナフタレン82g(0.5モル)をイソプロピルアルコール190mLにあらかじめ溶解した溶液を加え、40℃で30分撹拌した。塩化鉄(III)六水和物139g(0.5モル)及び水664mL、イソプロピルアルコール94mLの混合溶液を加え、40℃まで昇温してから、さらに1時間撹拌した。反応液に酢酸エチル500mLを加え、10分撹拌した。反応液を分液漏斗に移し、有機層を分離した後、さらに、水層を酢酸エチルで抽出した。合わせた有機層を飽和食塩水で洗浄した。真空下で溶媒を200mL程度になるまで留去した後、溶液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、トルエン5Lを加えた後、溶媒を酢酸エチル及び水からトルエンに置換した。トルエン溶液を室温まで冷却した後、不溶物をろ別した。ろ液を温度計、攪拌機、ディーンスタークトラップを備えたSUS容器に移し、撹拌しながら、沸点以上の温度に加熱し、トルエンを500mL程度になるまで留去することで濃縮し、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの結晶を析出させた。析出物と溶媒を80℃以上の温度での熱時ろ過でろ取した後、110℃で5時間乾燥させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを収量53g(収率68%)で得た。得られた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールは、GPCおよびMSにより、多量体化した成分を含まず、高純度であることを確認した。
実施例7で得られた本発明のエポキシ樹脂(A-1)および比較用エポキシ樹脂(A-2)[下記構造式で表される4官能型ナフタレン系エポキシ樹脂(DIC(株)社製「エピクロンHP-4700」、軟化点91℃、150℃溶融粘度4.5ps、エポキシ当量166g/当量)]、
粘弾性測定装置(DMA:レオメトリック社製固体粘弾性測定装置RSAII、レクタンギュラーテンション法;周波数1Hz、昇温速度3℃/min)を用いて、弾性率変化が最大となる(tanδ変化率が最も大きい)温度をガラス転移温度として評価した。
<耐熱性(5%重量減少温度)>
示差熱熱量重量同時測定装置(エスアイアイ・ナノテクノロジー社製TG/DTA6200)を用いて、アルミパン容器に樹脂塗膜を秤量し、室温から500℃まで昇温し、5%重量減少温度を測定した。
測定条件
測定温度:室温~500℃
測定雰囲気:窒素
昇温速度:10℃/min
<線膨張係数>
熱機械分析装置(TMA:セイコーインスツルメント社製SS-6100)を用いて、圧縮モードで熱機械分析を行った。
測定条件
測定架重:88.8mN
昇温速度:3℃/分で2回
測定温度範囲:-50℃から300℃
上記条件での測定を同一サンプルにつき2回実施し、2回目の測定における、25℃か
ら280℃の温度範囲における平均膨張係数を線膨張係数として評価した。
<吸湿率>
恒温恒湿装置内で85℃/85%RHの吸湿条件で、300 時間吸湿させた後の重量増加率から吸湿率を計算した。
<溶剤溶解性>
エポキシ樹脂10部とメチルエチルケトン4.3部をサンプル瓶中、密閉状態60℃で
溶解させた。その後、25℃まで冷却し、結晶が析出するか評価した。結晶が析出しない
場合は○、結晶が析出した場合は×として判定した。
Claims (11)
- 2,2’,7,7’-テトラグリシジルオキシ-1,1’-ビナフタレンであるエポキシ化合物。
- [1,1’-ビナフタレン]-2,2’,7,7’-テトラオールまたは[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール一水和物にエピハロヒドリンを反応させることを特徴とするエポキシ化合物の製造方法。
- 請求項2に記載の製造方法で得られるエポキシ化合物。
- 請求項1または2に記載のエポキシ化合物、および硬化剤を含有することを特徴とするエポキシ樹脂組成物。
- 請求項4記載のエポキシ樹脂組成物を硬化させてなることを特徴とする硬化物。
- ナフタレン-2,7-ジオールまたはナフタレン-2,7-ジオール誘導体の二量化反応によって得られる粗生成物を、芳香族系溶媒に接触させる工程と、
芳香族系溶媒に溶解した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと不溶物とに分離する工程と、
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール溶液から溶媒を除去する工程とを有することを特徴とする、
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法。 - ナフタレン-2,7-ジオールまたはナフタレン-2,7-ジオール誘導体の二量化反応によって得られる粗生成物を、芳香族系溶媒に接触させる工程と、
芳香族系溶媒に溶解した[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと不溶物とに分離する工程と、
得られた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール溶液を加熱濃縮して、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを得る工程とを有する、
請求項6に記載の[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法。 - 前記ナフタレン-2,7-ジオールまたはナフタレン-2,7-ジオール誘導体の二量化反応が、ナフタレン-2,7-ジオールの酸化カップリング反応である、
請求項6または7に記載の[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法。 - 前記ナフタレン-2,7-ジオールの酸化カップリング反応が、ナフタレン-2,7-ジオールを塩化第二鉄六水和物を触媒として反応させるものである、
請求項8に記載の[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法。 - 前記の芳香族系溶媒が、ベンゼン、アルキルベンゼンまたはアルコキシベンゼンから選択される少なくとも一種である、
請求項6から9のいずれか一項に記載の[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールの製造方法。 - 請求項6から10に記載の製造方法で[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールを得る工程と、
得られた[1,1’-ビナフタレン]-2,2’,7,7’-テトラオールと水とを接触させ、[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール一水和物を得る工程を有することを特徴とする、
[1,1’-ビナフタレン]-2,2’,7,7’-テトラオール一水和物の製造方法。
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| JP2014538480A JP5761584B2 (ja) | 2012-09-28 | 2013-09-24 | エポキシ化合物、その製造方法、エポキシ樹脂組成物およびその硬化物 |
| US14/431,968 US9738580B2 (en) | 2012-09-28 | 2013-09-24 | Epoxy compound, method for producing the same, epoxy resin composition, and cured product thereof |
| KR1020157006104A KR101713169B1 (ko) | 2012-09-28 | 2013-09-24 | 에폭시 화합물, 그 제조 방법, 에폭시 수지 조성물 및 그 경화물 |
| CN201380050884.5A CN104684902B (zh) | 2012-09-28 | 2013-09-24 | 环氧化合物、其制备方法、环氧树脂组合物及其固化物 |
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| WO2016190024A1 (ja) * | 2015-05-27 | 2016-12-01 | 三菱瓦斯化学株式会社 | ヒドロキシ置換芳香族化合物の製造方法及び梱包方法 |
| WO2016190044A1 (ja) * | 2015-05-27 | 2016-12-01 | 三菱瓦斯化学株式会社 | ヒドロキシ置換芳香族化合物の製造方法 |
| JPWO2016010152A1 (ja) * | 2014-07-17 | 2017-04-27 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104684902B (zh) | 2019-05-17 |
| CN104684902A (zh) | 2015-06-03 |
| US9738580B2 (en) | 2017-08-22 |
| US20150353456A1 (en) | 2015-12-10 |
| JPWO2014050789A1 (ja) | 2016-08-22 |
| TW201418235A (zh) | 2014-05-16 |
| KR20150042251A (ko) | 2015-04-20 |
| US20180002261A1 (en) | 2018-01-04 |
| DE112013004781T5 (de) | 2015-06-03 |
| US10329231B2 (en) | 2019-06-25 |
| KR101713169B1 (ko) | 2017-03-07 |
| TWI583674B (zh) | 2017-05-21 |
| JP5761584B2 (ja) | 2015-08-12 |
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