WO2013183303A1 - 硬化性樹脂組成物、樹脂組成物、これらを用いてなる樹脂シート、及びこれらの硬化物 - Google Patents
硬化性樹脂組成物、樹脂組成物、これらを用いてなる樹脂シート、及びこれらの硬化物 Download PDFInfo
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- WO2013183303A1 WO2013183303A1 PCT/JP2013/003603 JP2013003603W WO2013183303A1 WO 2013183303 A1 WO2013183303 A1 WO 2013183303A1 JP 2013003603 W JP2013003603 W JP 2013003603W WO 2013183303 A1 WO2013183303 A1 WO 2013183303A1
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- 0 C*(*C(C)(C)N(CC1OC1)CC1OC1)OCC1OC1 Chemical compound C*(*C(C)(C)N(CC1OC1)CC1OC1)OCC1OC1 0.000 description 2
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
- C08G59/3218—Carbocyclic compounds
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
- C08G59/3227—Compounds containing acyclic nitrogen atoms
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C08J7/05—Forming flame retardant coatings or fire resistant coatings
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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- 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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- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08J2379/00—Characterised by the use 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 C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C08J2379/00—Characterised by the use 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 C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/02—Polyglycidyl ethers of bis-phenols
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/04—Epoxynovolacs
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/06—Triglycidylisocyanurates
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- C08J2479/00—Characterised by the use 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 C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Definitions
- the present invention relates to a curable resin composition containing a curing agent composed of a polyfunctional epoxy compound having a specific structure, a cyanate ester, and an imidazole compound, a resin composition, a resin sheet using the same, and electrical performance. Further, it relates to these cured products having excellent adhesion and heat resistance.
- the curable composition containing an epoxy resin and a cyanate ester has excellent electrical performance, adhesiveness, and heat resistance, and therefore can be used in various electrical and electronic fields such as printed wiring boards and semiconductor sealing insulating materials. in use.
- the used resin sheet is used.
- Patent Document 1 a prepreg containing a cyanate resin, an epoxy resin, an imidazole compound and an inorganic filler as essential components and having excellent low dielectric properties, laser workability and flame retardancy (Patent Document 2) ) Is disclosed.
- cyanate resin contains a cyanate resin and / or a prepolymer thereof, an epoxy resin not containing a halogen atom, an imidazole compound, and an inorganic filler as essential components, and has a low expansion coefficient, flame retardancy and high heat resistance.
- a resin composition for solder resist (Patent Document 4) excellent in impact and moisture resistance, an adduct of an epoxy resin, a cyanate ester resin, an imidazole compound and an epoxy resin, and a metal-based curing catalyst It is possible to form a uniform roughened surface with a low roughness and at the same time formed on the roughened surface.
- Patent Document 5 That the conductive layer and the adhesion to a resin composition excellent (Patent Document 5) have also been disclosed.
- An epoxy resin composition containing, as essential components, a curing agent having at least two groups that react with the compound, a compound having at least two cyanate groups in one molecule, and an inorganic filler is disclosed (patents). Reference 6).
- the polymer having a weight average molecular weight of 10,000 or more, a curable compound having an epoxy group or an oxetane group, a cyanate compound having a cyanate equivalent of 50 to 200, a curing agent, and a filler, and is in an uncured state.
- Patent Document 7 capable of obtaining a cured product having a high handling property and a low relative dielectric constant, a polyfunctional cyanate ester having an average cyanate group number of 2.5 or more, or a mixture thereof, and an average epoxy
- Type cyanic acid-epoxy composite resin composition is disclosed.
- the first object of the present invention is excellent in coating property, low tackiness, and flexibility of the coating film before curing, and excellent in adhesion to the substrate after curing. It is providing the curable resin composition which has heat resistance and insulation.
- the second object of the present invention is excellent in coating properties, low tackiness, flexibility of the coating film before curing, and adhesion to the substrate after curing, and also has good heat resistance and insulation. And providing a resin composition having excellent heat dissipation.
- the third object of the present invention is to provide a resin sheet having excellent low heat resistance, flexibility before curing, and excellent adhesion to a substrate after curing, as well as good heat resistance and insulation. It is to provide.
- the fourth object of the present invention is to provide a cured product excellent in adhesion to a substrate, heat resistance, insulation and the like.
- the present inventors have combined the above-mentioned curing agent comprising a polyfunctional epoxy compound having a specific structure with a polyfunctional cyanate ester and an imidazole compound.
- the present inventors have found that these objects can be achieved, and have reached the present invention.
- the present invention provides (A) a trifunctional epoxy compound (A1) having three glycidyl groups in the molecule and a tetrafunctional epoxy compound (A2) having four glycidyl groups in the molecule. ); 100 parts by mass of a polyfunctional epoxy component (A2) contained in a ratio of 10:90 to 90:10 in terms of mass; (B) 25 to 200 masses of a polyfunctional cyanate compound having two or more cyanate groups And (C) a curable resin composition containing 0.5 to 20 parts by mass of an imidazole compound as a curing agent, wherein the trifunctional epoxy compound (A1) has a methylene group between carbon atoms.
- the aromatic ring of the aromatic hydrocarbon having one or more aromatic rings which may have an ether bond and is unsubstituted or substituted by a halogen atom, includes three glycidyl oxines. Or an epoxy compound in which one glycidyloxy group and one diglycidylamino group are bonded, and the tetrafunctional epoxy compound (A2) is a methylene group between carbon atoms.
- a curable resin composition comprising an epoxy compound to which at least one selected group is bonded; a resin composition comprising a curable component comprising the curable resin composition and a non-curable component A resin composition having a content of the curable component of 5 to 99% by mass; a resin sheet using the curable resin composition or the resin composition; and A cured product obtained by curing the these.
- the trifunctional epoxy compound (A1) and the tetrafunctional epoxy compound (A2) may be a compound having an aromatic ring to which a diglycidylamino group is bonded.
- the trifunctional epoxy compound (A1) is preferably a compound having an aromatic ring to which a diglycidylamino group is bonded.
- the curable resin composition of the present invention is a silane cup when applied or adhered to an inorganic base material, or when a filler (E) is used as a non-curable component of the resin composition. It is preferable to contain 1 to 25 parts by mass of the ring agent (D). Further, in the case of imparting thermal conductivity, flame resistance, etc. to the cured product obtained by curing the curable resin composition of the present invention or suppressing the thermal expansion of the cured product, a filler as a non-curable component It is preferable to blend (E).
- the curable resin composition of the present invention is excellent in coating property, low tackiness and flexibility of the coating film before curing, and also has excellent adhesion to a substrate, heat resistance and after curing. Has insulation.
- the resin composition of the present invention like the curable resin composition, has coating properties, low tackiness, and flexibility of the coating film before curing, and is an excellent base material even after curing. In addition to having excellent adhesion, heat resistance and insulation, it also has excellent heat dissipation.
- the curable resin composition of the present invention contains a polyfunctional epoxy component (A), a polyfunctional cyanate ester component (B), and a curing agent (C).
- the polyfunctional epoxy component (A) is one or more of trifunctional epoxy compounds (A1) having 3 glycidyl groups in the molecule, and 4 having 4 glycidyl groups in the molecule. It consists of 1 type, or 2 or more types of a functional epoxy compound (A2).
- the trifunctional epoxy compound (A1) may have an ether bond without having a methylene group between carbon atoms, and may have an aromatic carbon atom having one or more aromatic rings that are unsubstituted or substituted by a halogen atom. It is an epoxy compound in which three glycidyloxy groups are bonded to the aromatic ring of hydrogen, or one glycidyloxy group and one diglycidylamino group are bonded, and the following general formula (1) It is preferable that it is a compound which has a structure represented.
- X in the above formula is an aromatic hydrocarbon group having no methylene group between carbon atoms and having 1 to 4 aromatic rings, and even if unsubstituted, fluorine, chlorine, bromine, iodine May be substituted with a halogen atom such as, and may have an ether bond.
- the diglycidylamino group and glycidyloxy group in the formula are directly bonded to the aromatic ring, m is 0 or 1, and n is an integer of 3-2m.
- the aromatic hydrocarbon group X is composed only of an aromatic ring selected from benzene, naphthalene, biphenyl, anthracene, fluorene, acenaphthylene and acenaphthene, or the aromatic ring and a methyl group, a methine group, or a carbon atom. And at least one selected from oxygen atoms.
- More specific examples of the trifunctional epoxy compound (A1) include compounds represented by the following general formula (1-1).
- R 1 to R 4 in the above formula are each independently a hydrogen atom, a halogen atom or a methyl group
- Y is a group selected from the following general formulas (1-2) to (1-4) is there.
- R 5 to R 24 in the formula are each independently a hydrogen atom, a halogen atom or a methyl group
- R 01 to R 03 are each independently a hydrogen atom or a methyl group.
- the halogen atom may be any of fluorine, chlorine, bromine and iodine.
- formula is a coupling
- trifunctional epoxy compound (A1) used in the present invention include compounds a-1 to a-7 shown below.
- the tetrafunctional epoxy compound (A2) may have an ether bond without having a methylene group between carbon atoms, and may have an aromatic ring having one or more aromatic rings that are unsubstituted or substituted by a halogen atom.
- a compound having a structure represented by 2) is preferred.
- Z in the formula is an aromatic hydrocarbon group having no methylene group between carbon atoms and having 2 to 6 aromatic rings, and even if unsubstituted, fluorine, chlorine, bromine, iodine May be substituted with a halogen atom such as, and may have an ether bond.
- the diglycidylamino group and the glycidyloxy group are directly bonded to the aromatic ring, x is 0, 1 or 2, and y is an integer of 4-2x. That is, the tetrafunctional epoxy compound (A2) has either four glycidyloxy groups, one diglycidylamino group and two glycidyloxy groups, or two diglycidylamino groups. It is.
- the aromatic hydrocarbon group Z is composed only of an aromatic ring selected from benzene, naphthalene, biphenyl, anthracene, fluorene, acenaphthylene and acenaphthene, or the aromatic ring and a methyl group, a methine group, a carbon atom And at least one selected from oxygen atoms.
- tetrafunctional epoxy compound (A2) include compounds represented by the following general formulas (2-1) to (2-3).
- R 25 to R 68 in the formula are each independently a hydrogen atom, a halogen atom or a methyl group
- R 04 to R 05 are each independently a hydrogen atom or a methyl group
- Q is an oxygen atom or the following general formula This is a group represented by the formula (2-4).
- R 69 to R 72 in the formula are each independently a hydrogen atom, a halogen atom or a methyl group
- R 06 and R 07 are each independently a hydrogen atom or a methyl group.
- formula is a coupling
- Preferred examples of the tetrafunctional epoxy compound (A2) according to the present invention include compounds represented by the following compounds a-8 to a-12.
- the said polyfunctional epoxy component (A) improves heat resistance with respect to the hardened
- the trifunctional epoxy compound (A1) and the tetrafunctional epoxy compound are used from the viewpoint of imparting flexibility to the resin coating film before coating and improving the strength of the resin cured product.
- at least one compound of (A2) is a compound having an aromatic ring to which a diglycidylamino group is bonded.
- one of (A1) and (A2) has fluidity from the viewpoint of maintaining good coating properties and reducing tackiness of the resin coating film after coating and before curing. It is preferable to use a combination in which the other compound is a solid compound that does not have fluidity. In this case, it is preferable to combine the trifunctional epoxy compound (A1) having a diglycidylamino group, which gives flexibility to the coating film, with the tetrafunctional epoxy compound (A2) that gives a better heat-resistant cured product.
- the sheet when a resin sheet is formed, the sheet is produced in a stacked shape and commercialized, so it is necessary that the coating film has no tack. Also in this case, it is preferable to select (A1) and (A2) so that one of the trifunctional epoxy compound (A1) and the tetrafunctional epoxy compound (A2) is solid and the other is liquid.
- the compound that improves the heat resistance of the cured product after curing is the compound a-8.
- the compound a-8 is a solid compound, when the resin sheet is formed, the trifunctional epoxy compound used in combination with the compound a-8 is a liquid compound a-1, a having a diglycidylamino group.
- -2 and a-3 are preferably selected from at least one.
- the content of the trifunctional epoxy compound (A1) in the polyfunctional epoxy component (A) according to the present invention is in the range of 10% by mass to 90% by mass from the viewpoint of giving sufficient heat resistance to the cured product.
- the content of the liquid epoxy compound in the component (A) is 20 to 80% by mass. Is preferred.
- the compound a-8 in the component (A) when combining the compound a-8 with at least one compound selected from the compounds a-1, a-2, and a-3, the compound a-8 in the component (A) When the content is in the range of 30 to 70% by mass, the coating property, the flexibility of the coating film, and the heat resistance of the cured product are improved.
- the polyfunctional cyanate ester (B) used in the present invention is not particularly limited, and is selected from the group consisting of compounds represented by the following general formulas (3) and (4), for example. It may be at least one compound. Furthermore, compounds in which some or most of the cyanate groups of these compounds are trimerized to form a triazine ring can also be used.
- p is an integer of 0 to 12
- R is a divalent hydrocarbon group which is unsubstituted or substituted with a halogen atom
- R 101 and R 102 are each independently a hydrogen atom or a carbon number of 1 to 4 It is an alkyl group.
- R 104 in the formula is a divalent hydrocarbon group which is unsubstituted or substituted with a halogen atom, —O—, —S— or a single bond, and R 103 and R 105 are each independently unsubstituted. Or a phenylene group substituted with 1 to 4 alkyl groups having 1 to 4 carbon atoms.
- R in the general formula (3) examples include groups selected from the following group (3-1). However, q in the formula is an integer of 4 to 12.
- R 104 in the general formula (4) examples include a propane-2,2-diyl group which is unsubstituted or substituted with a halogen atom, or a group selected from the following group (4-1).
- q in the formula is an integer of 4 to 12.
- R 103 and R 105 include a group represented by the following general formula (4-2).
- R 106 to R 109 in the formula are each independently a hydrogen atom, an unsubstituted methyl group or a methyl group substituted with a halogen atom.
- * in the above (3-1), (4-1) and (4-2) is a connecting portion.
- polyfunctional cyanate compound used as the polyfunctional cyanate component (B) used in the present invention include phenol novolac polycyanate, cresol novolac polycyanate, and 4,4′-ethylidenebisphenylene cyanate.
- the polyfunctional cyanate ester component (B) is preferably a fluid liquid, for example, a temperature range of 20 ° C. to 60 ° C. It is preferable to use phenol novolac polycyanate which is liquid.
- the curing agent (C) used in the present invention is at least one selected from imidazole compounds.
- the imidazole compound include 2-methylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 1,2-dimethylimidazole, 2-ethyl-4-methylimidazole, 1,2-dimethylimidazole, 2-ethyl- 4-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 1-benzyl-2-methylimidazole, 1-benzyl-2-phenylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl- 2-undecylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-undecylimidazolium trimellitate, 1-cyan
- the imidazole compound a compound that gives an appropriate curing temperature and curing speed according to the use and composition of the curable resin composition or resin sheet of the present invention is appropriately selected.
- component (A) comprising at least one trifunctional epoxy compound selected from the above-mentioned compounds a-1, a-2 and a-3, and a tetrafunctional epoxy compound a-8, and phenol novolac poly
- a polyfunctional cyanate ester component (B) comprising cyanate is used as a resin sheet, 2-phenyl-4,5-dihydroxy which has a long pot life and can be used at a relatively high curing temperature. Preference is given to using methylimidazole.
- silane coupling agent is not particularly limited as long as it is a silicon compound having a functional group that reacts with an organic component and a functional group that reacts with a base material or a filler. Can do.
- silane coupling agent blended in the curable resin composition of the present invention as a group capable of reacting with the component (A) and / or the component (B), an epoxy group, an amino group, an isocyanate group, a mercapto group, etc. It is preferable to use those having a silanol group, and it is preferable to use those having a silanol group, an alkoxysilyl group or the like as a group capable of reacting with a substrate or a filler.
- silane coupling agent examples include 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidpropyltrimethoxysilane, and 3-glycidpropylmethyl.
- the blending ratio of the polyfunctional epoxy component (A) and the polyfunctional cyanate ester component (B) in the curable resin composition of the present invention is from the viewpoint of providing sufficient heat resistance and necessary insulation of the cured product.
- the component (B) must be 25 to 200 parts by weight, preferably 50 to 150 parts by weight, based on 100 parts by weight of the component (A). When the component (B) is less than 25 parts by mass, the heat resistance of the cured product becomes insufficient, and when it exceeds 200 parts by mass, the adhesion to the substrate is lowered.
- the compounding ratio of the polyfunctional epoxy component (A) and the curing agent (C) is 0.5 with respect to 100 parts by mass of the component (A) from the viewpoint of obtaining stable curing conditions and a sufficient curing rate.
- the amount must be ⁇ 20 parts by mass, and preferably 0.8 to 10 parts by mass.
- the compounding ratio of the silane coupling agent must be 1 to 25 parts by mass with respect to 100 parts by mass of the polyfunctional epoxy component (A). More preferably, it is ⁇ 10 parts by mass. If the component (D) is less than 1 part by mass, the adhesion between the cured product and the substrate may be insufficient. If it exceeds 25 parts by mass, the surplus will affect the insulation of the cured product. Decreases.
- the curable resin composition of the present invention is a resin base material for various members in the electric / electronic field, such as a printed wiring board, a semiconductor sealing insulating material, a power semiconductor, an LED illumination, an LED backlight, a power LED, and a solar cell. Can be widely applied. Specifically, it is useful as a curable component of these curable components or various coating materials such as a prepreg, a sealing agent, a laminated substrate, a coating adhesive, and an adhesive sheet.
- the resin composition of the present invention is a composition comprising a curable component comprising the curable resin composition of the present invention and a non-curable component, wherein the content of the curable component is 5 to 99% by mass. .
- the non-curable component is a component that does not contribute to the curing reaction of the curable resin composition of the present invention, a component that does not substantially contribute to the curing reaction, or a reaction even if it has a reactive site. It means a component that is less affected by the curing reaction even if it has a possible site.
- This non-curable component improves the coatability of the curable resin composition of the present invention, imparts thermal conductivity to the cured product, imparts flame resistance and flame resistance to the cured product, and insulates the cured product It is appropriately selected and blended depending on the purpose, such as imparting properties, imparting mechanical strength to the cured product, and suppressing thermal expansion of the cured product.
- thermoplastic resin When a thermoplastic resin is used as the non-curable component, the coating property of the resin composition is improved, so that the film breakage, the cracking of the coating film, and the occurrence of cracks during coating are prevented. In addition, the flexibility and malleability of the resin coating film obtained by coating are improved. Even if the thermoplastic resin has a site capable of reacting with the curable resin composition of the present invention, it is used as long as it does not substantially contribute to the resin curing reaction or is less influenced by the reaction. be able to.
- thermoplastic resin examples include low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, polybutene-1, poly-3-methyl-1-butene, poly-3-methyl-1-pentene, and poly-4-methyl.
- Polyolefin resins such as ⁇ -olefin polymers such as -1-pentene or ethylene-vinyl acetate copolymers, ethylene / propylene block or random copolymers, and copolymers thereof; polyvinyl chloride, polyvinylidene chloride , Chlorinated polyethylene, polyvinylidene fluoride, rubber chloride, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-vinylidene chloride-vinyl acetate terpolymer, vinyl chloride-acrylic acid ester Polymer, vinyl chloride-maleic acid ester copolymer, vinyl chloride-shiku Halogen-containing resins such as hexylmaleimide copolymers; Polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyhexamethylene terephthalate; polystyrene, high impact polys
- the compatibility with the curable resin composition of the present invention is good, flexibility can be imparted to the coating film before curing, and the cured product after curing is From the viewpoint of having good heat resistance and insulation, it is preferable to use a phenoxy resin.
- the phenoxy resin content in the resin composition of the present invention is preferably 0.5 to 20% by mass.
- non-curable component (E) In the case of imparting properties such as thermal conductivity, flame resistance, flame retardancy, insulation and mechanical strength to the cured product of the resin composition of the present invention, or suppressing the thermal expansion of the cured product, It is preferable to blend a filler as the non-curable component (E).
- fillers include silicates such as talc, calcined clay, unfired clay, mica, and glass; oxides such as titanium oxide, alumina, silica, fused silica, magnesium oxide, and zirconium oxide; calcium carbonate, magnesium carbonate, hydrotal Carbonates such as sites; metal hydroxides such as aluminum hydroxide, magnesium hydroxide, calcium hydroxide; sulfates or sulfites such as barium sulfate, calcium sulfate, calcium sulfite; zinc borate, barium metaborate, boric acid Borates such as aluminum, calcium borate and sodium borate; nitrides such as aluminum nitride, boron nitride, silicon nitride and carbon nitride; fiber fillers such as glass fiber and carbon fiber; calcium titanate, strontium titanate and titanium Barium acid, lead titanate, zircon titanate Other titanates such as lead, cellulose, quartz sand, cement and carbon. These may be used
- fillers are appropriately selected according to the purpose and application.
- alumina aluminum nitride, boron nitride or the like.
- silica particularly spherical fused silica, is preferably used.
- aluminum hydroxide or the like is preferable to use in order to impart flame resistance and flame retardancy.
- the particle diameter, particle size distribution, shape, and the like of the filler may be appropriately selected so that a desired use effect is exhibited.
- the filler content in the total resin composition containing the filler can be appropriately adjusted, but it is usually preferably 50 to 95% by mass.
- the curable fat composition and the resin composition of the present invention can contain an organic solvent, a thermoplastic resin, a thixotropic agent, a viscosity modifier, a leveling agent, and the like in order to improve coatability.
- the organic solvent is preferably one that maintains the curable resin composition or resin composition of the present invention in a stable mixed state and volatilizes at an appropriate temperature.
- examples of such organic solvents include alcohol solvents, diol solvents, ketone solvents, ester solvents, ether solvents, aliphatic or alicyclic hydrocarbon solvents, aromatic hydrocarbon solvents, halogenated solvents.
- An aromatic hydrocarbon type agent etc. are mentioned, It uses individually or in mixture of 2 or more types.
- alcohol solvent examples include methanol, ethanol, propanol, isopropanol, 1-butanol, isobutanol, 2-butanol, tertiary butanol, pentanol, isopentanol, 2-pentanol, neopentanol, and third pentanol.
- diol solvent examples include ethylene glycol, propylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, neopentyl glycol, isoprene glycol (3- Methyl-1,3-butanediol), 1,2-hexanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 1,2-octanediol, octanediol (2-ethyl-1) , 3-hexanediol), 2-butyl-2-ethyl-1,3-propanediol, 2,5-dimethyl-2,5-hexanediol, 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1 , 4-cyclohexane
- ketone solvent examples include acetone, ethyl methyl ketone, methyl isopropyl ketone, methyl butyl ketone, methyl isobutyl ketone, methyl amyl ketone, methyl hexyl ketone, ethyl butyl ketone, diethyl ketone, dipropyl ketone, diisobutyl ketone, and methyl amyl ketone.
- Cyclohexanone methylcyclohexanone and the like.
- ester solvents examples include methyl formate, ethyl formate, methyl acetate, ethyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, 2 butyl acetate, 3 butyl acetate, amyl acetate, isoamyl acetate, 3 amyl acetate, acetic acid Phenyl, methyl propionate, ethyl propionate, isopropyl propionate, butyl propionate, isobutyl propionate, 2 butyl propionate, 3 butyl propionate, amyl propionate, isoamyl propionate, 3 amyl propionate, propionic acid Phenyl, methyl 2-ethylhexanoate, ethyl 2-ethylhexanoate, propyl 2-ethylhexanoate, isopropyl 2-ethylhexano
- ether solvent examples include tetrahydrofuran, tetrahydropyran, morpholine, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, triethylene glycol dimethyl ether, dibutyl ether, diethyl ether, dioxane and the like.
- aliphatic or alicyclic hydrocarbon solvents examples include pentane, hexane, cyclohexane, methylcyclohexane, dimethylcyclohexane, ethylcyclohexane, heptane, octane, decalin, solvent naphtha, turpentine oil, D-limonene, pinene, mineral spirit, etc. Is mentioned.
- aromatic hydrocarbon solvent examples include benzene, toluene, ethylbenzene, xylene, mesitylene, diethylbenzene, cumene, isobutylbenzene, cymene, tetralin and the like
- halogenated hydrocarbon solvents include carbon tetrachloride, chloroform, Examples include trichloroethylene and methylene chloride.
- organic solvents from the viewpoint of volatilization after forming a resin sheet and the like, and from the viewpoint of high solubility of the resin component, in the present invention, alcohol-based, ketone-based, aliphatic hydrocarbon-based, aromatic carbonized It is preferable to use a hydrogen-based solvent.
- the content of these solvents in the curable resin composition or resin composition of the present invention is preferably 10 to 50% by mass.
- the resin composition of the present invention is a resin base material for various members in the electric / electronic field, such as a printed wiring board, a semiconductor encapsulating insulating material, a power semiconductor, an LED illumination, an LED backlight, a power LED, and a solar cell. As such, it can be widely applied. Specifically, it is useful as a prepreg, a sealing agent, a laminated substrate, a coating adhesive, an adhesive sheet, and various paints.
- the resin sheet of the present invention can be obtained by blending the curable resin composition or resin composition of the present invention with a solvent or the like as necessary and forming it on a support such as a carrier film or a metal foil. .
- the resin sheet of the present invention may be in a state where the solvent remains after the sheet is formed, or may be in a state where the solvent is volatilized and no solvent is contained.
- the manufacturing method of the resin sheet of this invention is not specifically limited, A well-known method can be used. Specifically, it may be coated on the support using various coating apparatuses, or spray coated on the support using a spray device. Examples of the coating method include screen printing and brush coating, as well as methods using a coating apparatus such as a roll coater, bar coater, knife coater, gravure coater, die coater, comma coater, curtain coater and the like.
- the support when the support is peeled off from the support when using a sheet such as a carrier film, the support is preferably a support that can be easily peeled off.
- a thermoplastic resin film having heat resistance such as a polyester resin such as polyethylene terephthalate or polybutylene terephthalate, a fluorine resin, or a polyimide resin.
- the metal foil When using a metal foil as the support, the metal foil may be selected according to the application.
- the composition of the metal foil is, for example, copper, copper alloy, aluminum, aluminum alloy, iron, iron alloy, silver, silver alloy, gold, gold alloy, zinc, zinc alloy, nickel, nickel alloy , Tin, tin-based alloy and the like are preferably selected.
- the thickness of the resin sheet of the present invention is usually 20 to 150 ⁇ m and can be appropriately set depending on the application.
- the resin sheet of the present invention is used as a heat-dissipating adhesive sheet used for adhering exothermic devices such as semiconductor elements, LED lighting, LED backlights, power LEDs, etc.
- the flexibility of the subsequent coating film and the coating film without tack are required.
- cured material, heat resistance, insulation, etc. are calculated
- the trifunctional epoxy compound (A1) in the epoxy component (A) it is preferable to use a compound in which a diglycidylamino group is bonded to an aromatic ring, and as the tetrafunctional epoxy compound (A2), It is preferable to use a compound having high heat resistance such as the compound a-8.
- the polyfunctional cyanate ester (B) liquid phenol novolac polycyanate is preferably used from the viewpoints of coatability and insulation, and the curing agent (C) is 2- Preference is given to using phenyl-4,5-dihydroxymethylimidazole.
- the filler (E) for imparting thermal conductivity to the cured product.
- a silane coupling agent component (D), an organic solvent, a thermoplastic resin, a leveling agent, and the like can be further added to these.
- the compounds a-2 and a-3 in Table 1 above are the exemplary compounds described in [0017] of the present specification, the compound a-8 is the exemplary compound described in [0021] of the present specification,
- the other components are as follows.
- BADCy Primaset BADCy
- Lonza bisphenol A dicyanate NC-3000-FH Nippon Kayaku's biphenyl novolac epoxy resin
- EP- 4100E Bisphenol A diepoxy resin 2PHZ manufactured by ADEKA: The official name is Curesol 2PHZ-PW. 2-phenyl-4,5-dihydroxymethylimidazole manufactured by Shikoku Kasei Kogyo Co., Ltd.
- curable resin composition was applied onto a carrier film made of polyethylene terephthalate using a bar coater, and the solvent was dried at 100 ° C for 20 minutes to obtain a curable resin sheet. Produced. Each obtained resin sheet was evaluated for flexibility and tack by the following methods. The results are shown in Table 2.
- the resin sheet was thermally cured using an oven at 200 ° C. for 60 minutes, and then cooled to peel off the carrier film to obtain a sheet-shaped cured resin product having a thickness of 100 ⁇ m.
- the obtained resin cured product was evaluated for heat resistance by the following method.
- ⁇ Heat resistance evaluation method> The cured product obtained by the above curing method is molded into a size of 5 ⁇ 60 mm, the dynamic viscoelasticity is measured using a thermal analyzer (EXSTAR6000: trade name manufactured by SII Nano Technology), and the loss elastic modulus.
- Tg glass transition temperature
- the curable resin composition of the present invention has low tackiness, and particularly when a phenol novolac compound is used as the cyanate compound (B) (curable resin composition Nos. 1 to 4), It was confirmed that the flexibility was good. Moreover, it was confirmed that the hardened
- curable resin composition No. 6-No. 10 was prepared.
- Each compound of the polyfunctional epoxy component in Table 3 is an exemplary compound described in [0017] and [0021] of this specification.
- a resin sheet having a thickness of 100 ⁇ m was prepared in the same manner as in Example 1, and the obtained resin sheet and its cured product were evaluated for flexibility, low tackiness and heat resistance in the same manner as in Example 1. Went. However, in the evaluation of flexibility, a rod having a diameter of 0.5 mm was used instead of the rod having a diameter of 2 mm used in Example 1. The results are shown in Table 4.
- Comparative Example 3 In the same manner as in Example 3 except that the comparative thermosetting resin composition obtained in Comparative Example 1 was used, the comparative resin composition No. 8-No. 11 was obtained.
- a resin sheet having a thickness of 100 ⁇ m was produced in the same manner as in Example 1 above, and from the viewpoint of sheet molding processability, Examples were obtained. In the same manner as in the case of 1, the flexibility and the low tack property were evaluated. Moreover, the coating film was hardened by the following method, and heat resistance, insulation, and heat dissipation were evaluated by the following method about the hardened
- Example 2 Evaluation of cured resin A sheet-shaped cured resin was produced in the same manner as in Example 1, and the following evaluation was performed. ⁇ Heat resistance evaluation method> Evaluation was performed in the same manner as in Example 1.
- ⁇ Insulation evaluation method> After laminating a resin sheet and a copper foil on an aluminum substrate, it was pressed and cured to produce a metal base substrate.
- the obtained copper foil of the base substrate was etched so as to leave a circle having an outer diameter of 50 mm, an outer diameter of 80 mm, a width of 10 mm, and a ring having the same center as the circle to obtain a test piece having a surface electrode. .
- the volume resistance value of the cured product was evaluated according to JIS-K-6911. That is, after placing a test piece in an oven set at 160 ° C. and preheating for 30 minutes or more, a voltage of 500 V (DC) was applied using a voltage application device (8340A ULTRA HIGH RESISTANCE METER: manufactured by ADMT Corporation). The volume resistance value after 1 minute was measured.
- the resin composition of the present invention has low tackiness, particularly when a curable resin composition containing phenol novolac cyanate is used (resin composition Nos. 1-3, 4, and 5), It was confirmed that flexibility and heat resistance were good. Moreover, it was confirmed that the hardened
- the curable resin composition of the present invention and the resin composition of the present invention formed by blending the curable resin composition and the non-curable component are excellent in coating property, low tackiness, and flexibility of the coating film before curing. In addition to being excellent in flexibility and adhesion to the substrate even after curing, it can realize good heat resistance and insulation, so printed wiring boards, semiconductor encapsulated insulating materials, power semiconductors, LEDs It can be widely applied as a resin base material for various members in the electrical and electronic fields such as lighting, LED backlights, power LEDs, solar cells, etc. Especially as a heat-dissipating adhesive sheet used for bonding exothermic devices Since it is suitable for use, it is extremely useful industrially.
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Description
また、パワー半導体やLEDの封止、接着、粘着基材等として使用する場合には、これらのエポキシ樹脂に、更に、放熱特性を付与するためのフィラー成分を加えた樹脂組成物及びこれを用いた樹脂シートが使用されている。
また、反りが小さく、難燃性、耐半田クラック性及び流動性に優れた、3官能エポキシ樹脂及び4官能エポキシ樹脂の中から選択される少なくとも1種のエポキシ樹脂と、1分子内にエポキシ基と反応する基を少なくとも2個有する硬化剤と、1分子内に少なくとも2個のシアネート基を有する化合物、及び、無機充填剤とを必須成分として含有するエポキシ樹脂組成物が開示されている(特許文献6)。
本発明の第2の目的は、塗工性、低タック性、硬化前の塗膜の可撓性、及び硬化後における基材への密着性に優れていると共に、良好な耐熱性と絶縁性を有する上、放熱性にも優れた樹脂組成物を提供することにある。
本発明の第3の目的は、前記低タック性、硬化前の可撓性、及び硬化後における基材への密着性に優れていると共に、良好な耐熱性と絶縁性とを有する樹脂シートを提供することにある。
本発明の第4の目的は、基材への密着性、耐熱性、及び絶縁性等に優れた硬化物を提供することにある。
また、本発明の硬化性樹脂組成物は、無機系の基材に塗布若しくは接着する場合、又は、前記樹脂組成物の非硬化性成分としてフィラー(E)を使用する場合には、更にシランカップリング剤(D)を1~25質量部含有することが好ましい。
また、本発明の硬化性樹脂組成物を硬化させた硬化物に、熱伝導性や耐燃性等を付与したり、硬化物の熱膨張を抑制したりする場合には、非硬化性成分としてフィラー(E)を配合することが好ましい。
また、前記多官能エポキシ成分(A)は、分子中に3個のグリシジル基を有する3官能エポキシ化合物(A1)の1種又は2種類以上、及び、分子中に4個のグリシジル基を有する4官能エポキシ化合物(A2)の1種又は2種類以上からなる。
但し、上式中のXは、炭素原子間にメチレン基を有さず、芳香環を1~4個有する芳香族炭化水素基であり、非置換であっても、フッ素、塩素、臭素、ヨウ素等のハロゲン原子で置換されていてもよく、また、エーテル結合を有していてもよい。
また、式中のジグリシジルアミノ基及びグリシジルオキシ基は、芳香環に直接結合しており、mは0又は1であり、nは3-2mの整数である。
但し、上記式中のR1~R4は、各々独立に水素原子、ハロゲン原子又はメチル基であり、Yは、下記一般式(1-2)~(1-4)から選択される基である。
但し、式中のR5~R24は、各々独立に水素原子、ハロゲン原子又はメチル基であり、R01~R03は、各々独立に水素原子又はメチル基である。また、ハロゲン原子は、フッ素、塩素、臭素、ヨウ素の何れでもよい。
尚、式中の*は結合部である。
但し、式中のZは、炭素原子間にメチレン基を有さず、芳香環を2~6個有する、芳香族炭化水素基であり、非置換であっても、フッ素、塩素、臭素、ヨウ素等のハロゲン原子で置換されていてもよく、エーテル結合を有していてもよい。また、式中の、ジグリシジルアミノ基及びグリシジルオキシ基は、芳香環に直接結合しており、xは0、1又は2であり、yは4-2xの整数である。
即ち、前記4官能エポキシ化合物(A2)は、グリシジルオキシ基を4個有するか、ジグリシジルアミノ基を1個及びグリシジルオキシ基を2個有するか、ジグリシジルアミノ基を2個有するかの何れかである。
但し、式中のR25~R68は、各々独立に水素原子、ハロゲン原子又はメチル基、R04~R05は、各々独立に水素原子又はメチル基であり、Qは、酸素原子又は下記一般式(2-4)で表される基である。
但し、式中のR69~R72は、各々独立に水素原子、ハロゲン原子又はメチル基であり、R06及びR07は、各々独立に水素原子又はメチル基である。尚、式中の*は結合部である。
また、本発明においては、塗工後、硬化前の樹脂塗膜に可撓性を付与すると共に樹脂硬化物の強度を向上させるという観点から、前記3官能エポキシ化合物(A1)及び4官能エポキシ化合物(A2)の少なくとも一方の化合物が、ジグリシジルアミノ基が結合している芳香環を有する化合物であることが好ましい。
この場合、より良好な耐熱性硬化物を与える4官能エポキシ化合物(A2)に、塗膜に可撓性を与える、ジグリシジルアミノ基を有する3官能エポキシ化合物(A1)を組み合わせることが好ましい。
また、塗布性とタックの低減を両立させるために、固形状及び液状のエポキシ化合物を併用する場合には、(A)成分における液状のエポキシ化合物の含有率は、20~80質量%であることが好ましい。
更に、これらの化合物の一部又はそのほとんどのシアネート基が、三量化してトリアジン環を形成している化合物も使用することができる。
但し、式中のpは0~12の整数、Rは非置換又はハロゲン原子で置換された2価の炭化水素基であり、R101、R102は各々独立に水素原子又は炭素数1~4のアルキル基である。
但し、式中のR104は非置換又はハロゲン原子で置換された2価の炭化水素基、-O-、-S-又は単結合であり、R103及びR105は、それぞれ独立に、非置換、又は、炭素数1~4のアルキル基1~4個で置換された、フェニレン基である。
但し、式中のR106~R109は、各々独立に水素原子、非置換のメチル基又はハロゲン原子で置換されたメチル基である。
尚、前記(3-1)、(4-1)及び(4-2)中の*は、結合部である。
また、硬化性樹脂組成物の塗布性を良好にするという観点から、多官能シアン酸エステル成分(B)は、流動性を有する液状であることが好ましく、例えば、20℃~60℃の温度域で液状であるフェノールノボラックポリシアネートを使用することが好ましい。
上記イミダゾール化合物としては、2-メチルイミダゾール、2-ウンデシルイミダゾール、2-ヘプタデシルイミダゾール、1,2-ジメチルイミダゾール、2-エチル-4-メチルイミダゾール、1,2-ジメチルイミダゾール、2-エチル-4-メチルイミダゾール、2-フェニルイミダゾール、2-フェニル-4-メチルイミダゾール、1-ベンジル-2-メチルイミダゾール、1-ベンジル-2-フェニルイミダゾール、1-シアノエチル-2-メチルイミダゾール、1-シアノエチル-2-ウンデシルイミダゾール、1-シアノエチル-2-エチル-4-メチルイミダゾール、1-シアノエチル-2-フェニルイミダゾール、1-シアノエチル-2-ウンデシルイミダゾリウムトリメリテイト、1-シアノエチル-2-フェニルイミダゾリウムトリメリテイト、2,4-ジアミノ-6-[2’-メチルイミダゾリル-(1’)]-エチル-s-トリアジン、2,4-ジアミノ-6-[2’-ウンデシルイミダゾリル-(1’)]-エチル-s-トリアジン、2,4-ジアミノ-6-[2’-エチル-4’-メチルイミダゾリル-(1’)]-エチル-s-トリアジン、2,4-ジアミノ-6-[2’-メチルイミダゾリル-(1’)]-エチル-s-トリアジンイソシアヌル酸付加物、2-フェニルイミダゾールイソシアヌル酸付加物、2-フェニル-4,5-ジヒドロキシメチルイミダゾール、2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール、2,3-ジヒドロ-1H-ピロロ[1,2-a]ベンズイミダゾール、1-ドデシル-2-メチル-3-ベンジルイミダゾリウムクロライド、2-メチルイミダゾリン、2-フェニルイミダゾリン等が挙げられる。
例えば、前述した化合物a-1、a-2及びa-3の中から選択される少なくとも1種の3官能エポキシ化合物、並びに4官能エポキシ化合物a-8からなる(A)成分と、フェノールノボラックポリシアネートからなる多官能シアン酸エステル成分(B)を用いて樹脂シートとする場合には、ポットライフが長い上、比較的高い硬化温度で使用することができる、2-フェニル-4,5-ジヒドロキシメチルイミダゾールを使用することが好ましい。
該シランカップリング剤は、有機成分と反応する官能基と、基材又はフィラーと反応する官能基とを有するケイ素化合物であれば特に制限されず、公知のものの中から適宜選択して使用することができる。
本発明の硬化性樹脂組成物に配合されるシランカップリング剤としては、前記(A)成分及び/又は(B)成分と反応し得る基として、エポキシ基、アミノ基、イソシアネート基、メルカプト基等を有するものを使用することが好ましく、また、基材又はフィラーと反応し得る基として、シラノール基、アルコキシシリル基等を有するものを使用することが好ましい。
ここで非硬化性成分とは、本発明の硬化性樹脂組成物の硬化反応に寄与しない成分、反応し得る部位を有していても、実質的に上記硬化反応に寄与しない成分、又は、反応し得る部位を有していても上記硬化反応によって受ける影響が少ない成分を意味する。この非硬化性成分は、本発明の硬化性樹脂組成物の塗工性を向上させる、硬化物に熱伝導性を付与する、硬化物に耐燃性、難燃性を付与する、硬化物に絶縁性を付与する、硬化物に機械的強度を付与する、硬化物の熱膨張を抑制する等、それぞれの目的に応じて適宜選択され、配合される。
上記熱可塑性樹脂は、本発明の硬化性樹脂組成物と反応し得る部位を有していたとしても、実質的に樹脂硬化反応に寄与しないか、反応による影響が少ないものであれば、使用することができる。
これらは必要に応じて、単独で、又は2種類以上を混合して使用される。
上記有機溶剤は、本発明の硬化性樹脂組成物又は樹脂組成物を安定な混合状態に維持し、適切な温度で揮発するものであることが好ましい。このような有機溶剤としては、例えば、アルコール系溶剤、ジオール系溶剤、ケトン系溶剤、エステル系溶剤、エーテル系溶剤、脂肪族又は脂環族炭化水素系溶剤、芳香族炭化水素系溶剤、ハロゲン化芳香族炭化水素系剤等が挙げられ、単独で、又は2種類以上混合して使用される。
具体的にはプリプレグ、封止剤、積層基板、塗布性接着剤、接着シート、及び各種塗料として有用である。
本発明の樹脂シートは、シートを形成した後に、溶剤が残留している状態であっても、溶剤を揮発させて溶剤を含まない状態であってもよい。
塗工方法としては、例えば、ロールコーター、バーコーター、ナイフコーター、グラビアコーター、ダイコーター、コンマコーター、カーテンコーター等の塗工装置を用いる方法の他、スクリーン印刷及び刷毛塗り等が挙げられる。
下記表1に従って成分を配合し、比較用硬化性樹脂組成物No.1~No.7を得た。
PT-30:Primaset PT-30(Lonza社製のフェノールノボラックシアネート)
DT-4000:Primaset DT-4000;Lonza社製のジシクロペンタジエンフェノールノボラックシアネート
BADCy:Primaset BADCy;Lonza社製のビスフェノールAジシアネート
NC-3000-FH:日本化薬社製のビフェニルノボラック型エポキシ樹脂
EP-4100E:ADEKA社製のビスフェノールA型ジエポキシ樹脂
2PHZ:正式名称はキュアゾール 2PHZ-PW。四国化成工業社製の2-フェニル-4,5-ジヒドロキシメチルイミダゾール
得られた硬化性樹脂組成物を、バーコーターを用いて、ポリエチレンテレフタレート製のキャリアフィルム上に塗布し、100℃、20分で溶剤を乾燥させ、硬化性樹脂シートを作製した。
得られた各樹脂シートについて、以下の方法により可撓性とタックの評価を行った。
結果を表2に示す。
折り曲げ試験器を用い、直径2mmの棒を軸にして樹脂シートを180°折り曲げ、樹脂シートに、割れ又はヒビが発生した時の折り曲げ角度により、以下のとおりに評価した。
○:180°曲げても割れ及びヒビが共にない
△:90~180°で割れ又はヒビが発生
×:0~90度で割れ又はヒビが発生
25℃の恒温室内で、樹脂シートの表面を指で強く押さえつけ、指紋のつき具合により、以下のように評価した。
○:指紋跡なし
△:僅かに指紋跡が残る
×:指紋跡あり
前記樹脂シートを、オーブンを用いて200℃、60分の条件で熱硬化させた後、冷却してキャリアフィルムを剥がし、厚さ100μmのシート状の樹脂硬化物を得た。
得られた樹脂硬化物について、下記の方法により耐熱性の評価を行った。
上記の硬化方法により得た硬化物を5×60mmの大きさに成形し、熱分析装置(EXSTAR6000:エスアイアイナノテクノロジー社製の商品名)を用いて動的粘弾性を測定し、損失弾性率を貯蔵弾性率で除した値である、損失正接の極大値を示す温度を求めて、ガラス転移温度(Tg)とした。結果を表2に示す。
尚、表中の「>280」は、Tgが280℃より高温であることを示す。
また、本発明の硬化性樹脂組成物の硬化物は、260℃以上においても耐熱性を示すことが確認された。
これに対し、比較用硬化性樹脂組成物は、可撓性、低タック性、硬化物の耐熱性の全てにおいて同時に良好であるものはなく、特に耐熱性においては、全てTgが250℃以下であり、耐熱性が特に劣ることが確認された。
結果を表4に示す。
比較例1で得られた比較用熱硬化性樹脂組成物を用いたこと以外は実施例3と同様にして、比較用樹脂組成物No.8~No.11を得た。
結果を表6に示す。
<可撓性の評価方法>
実施例2の場合と同様にして評価した。
<低タック性の評価方法>
実施例1の場合と同様にして評価した。
実施例1の場合と同様にしてシート状の樹脂硬化物を作製し、以下の評価を行った。
<耐熱性評価方法>
実施例1の場合と同様にして評価した。
アルミ基板に樹脂シート及び銅箔を積層した後、プレスして硬化させ、金属ベース基板を作製した。
得られたベース基板の銅箔を、外径が50mmの円及び外径80mm、巾10mmであって前記円と同じ中心を有する環を残すようにエッチングし、表面電極を有する試験片を得た。
この試験片を用いて、JIS-K-6911に準拠し、硬化物の体積抵抗値を評価した。すなわち、160℃に設定したオーブン内に試験片を設置し、30分以上予熱した後、電圧印加装置(8340A ULTRA HIGH RESISTANCE METER:ADCMT社製)を用いて、500V(DC)の電圧を印加してから1分後の体積抵抗値を計測した。
上述した樹脂シート状の樹脂硬化物の熱拡散率α(m2/s)を、拡散率測定装置(Mobile-1:(株)ai-phase製の商品名)を用いて測定し、下記式により熱伝導率Kを算出した。
K=α×ρ×Cp
但し、K:熱伝導率(W/m・K)、α:熱拡散率(m2/秒)、ρ:密度(kg/m3)、Cp:比熱容量(J/kg・K)である。
Claims (8)
- (A)分子中に3個のグリシジル基を有する3官能エポキシ化合物(A1)、及び、分子中に4個のグリシジル基を有する4官能エポキシ化合物(A2)を、前記(A1);(A2)が質量換算で10:90~90:10の割合で含有する多官能エポキシ成分100質量部;(B)2個以上のシアネート基を有する多官能シアン酸エステル化合物25~200質量部;並びに、(C)硬化剤としてイミダゾール化合物0.5~20質量部を含有する硬化性樹脂組成物であって、前記3官能エポキシ化合物(A1)が、炭素原子間にメチレン基を有さずエーテル結合を有することがあると共に、非置換若しくはハロゲン原子により置換された、1個以上の芳香環を有する芳香族炭化水素の前記芳香環に、3個のグリシジルオキシ基が結合しているか、又は、1個のグリシジルオキシ基及び1個のジグリシジルアミノ基が結合しているエポキシ化合物であると共に、前記4官能エポキシ化合物(A2)が、炭素原子間にメチレン基を有さずエーテル結合を有することがあると共に、非置換若しくはハロゲン原子により置換された、1個以上の芳香環を有する芳香族炭化水素の前記芳香環に、グリシジルオキシ基及びジグリシジルアミノ基から選択される少なくとも1種の基が結合しているエポキシ化合物であることを特徴とする硬化性樹脂組成物。
- 前記3官能エポキシ化合物(A1)及び4官能エポキシ化合物(A2)の少なくとも一方が、ジグリシジルアミノ基が結合している芳香環を有するエポキシ化合物である、請求項1に記載された硬化性樹脂組成物。
- 前記3官能エポキシ化合物(A1)が、ジグリシジルアミノ基が結合している芳香環を有する化合物である、請求項1に記載された硬化性樹脂組成物。
- 更に、(D)シランカップリング剤を、前記(A)成分100質量部に対し1~25質量部含有する、請求項1~3の何れかに記載された硬化性樹脂組成物。
- 請求項1~4の何れかに記載された硬化性樹脂組成物からなる硬化性成分及び非硬化性成分からなる樹脂組成物であって、前記硬化性成分の含有率が5~99質量%である樹脂組成物。
- 前記非硬化性成分として、フィラー(E)を50~95質量%含有する、請求項5に記載された樹脂組成物。
- 請求項1~4の何れかに記載された硬化性樹脂組成物又は請求項5若しくは6に記載された樹脂組成物からなることを特徴とする樹脂シート。
- 請求項1~4の何れかに記載された硬化性樹脂組成物又は請求項5若しくは6に記載された樹脂組成物、又は請求項7に記載された樹脂シートを硬化させてなる硬化物。
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- 2013-06-07 CN CN201380030246.7A patent/CN104364290B/zh active Active
- 2013-06-07 KR KR1020147034275A patent/KR102008550B1/ko active Active
- 2013-06-07 JP JP2014519845A patent/JP6289366B2/ja active Active
- 2013-06-07 US US14/405,810 patent/US9598573B2/en active Active
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| JP2017504499A (ja) * | 2013-12-04 | 2017-02-09 | ロンザ リミテッドLonza Limited | シアン酸エステル/エポキシブレンドに基づく繊維強化部品を製造するための方法 |
| JP2019116625A (ja) * | 2014-03-31 | 2019-07-18 | ナミックス株式会社 | 樹脂組成物、接着フィルム、および半導体装置 |
| EP3037492A1 (en) * | 2014-12-25 | 2016-06-29 | Shin-Etsu Chemical Co., Ltd. | Liquid underfill material composition for sealing semiconductor and flip-chip semiconductor device |
| WO2017014238A1 (ja) * | 2015-07-21 | 2017-01-26 | 住友ベークライト株式会社 | 熱伝導性樹脂組成物、熱伝導性シートおよび半導体装置 |
| JP2017025186A (ja) * | 2015-07-21 | 2017-02-02 | 住友ベークライト株式会社 | 熱伝導性樹脂組成物、回路基板用積層体、回路基板および半導体装置 |
| JPWO2017014238A1 (ja) * | 2015-07-21 | 2018-05-10 | 住友ベークライト株式会社 | 熱伝導性樹脂組成物、熱伝導性シートおよび半導体装置 |
| JP7073716B2 (ja) | 2015-07-21 | 2022-05-24 | 住友ベークライト株式会社 | 熱伝導性樹脂組成物、熱伝導性シートおよび半導体装置 |
| JP6596611B1 (ja) * | 2017-12-25 | 2019-10-23 | ペルノックス株式会社 | 熱硬化性組成物及びペースト |
| WO2022190746A1 (ja) * | 2021-03-08 | 2022-09-15 | 株式会社Adeka | 硬化性樹脂組成物、硬化物及び接着剤 |
| JPWO2022190746A1 (ja) * | 2021-03-08 | 2022-09-15 | ||
| EP4306566A4 (en) * | 2021-03-08 | 2025-01-29 | Adeka Corporation | Curable resin composition, cured product and adhesive |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6289366B2 (ja) | 2018-03-07 |
| CN104364290B (zh) | 2016-09-07 |
| TWI568764B (zh) | 2017-02-01 |
| US9598573B2 (en) | 2017-03-21 |
| US20150175799A1 (en) | 2015-06-25 |
| TW201402636A (zh) | 2014-01-16 |
| CN104364290A (zh) | 2015-02-18 |
| KR20150031235A (ko) | 2015-03-23 |
| JPWO2013183303A1 (ja) | 2016-01-28 |
| KR102008550B1 (ko) | 2019-08-07 |
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