WO2014171193A1 - 変性フェノール樹脂、変性フェノール樹脂の製造方法、変性エポキシ樹脂、変性エポキシ樹脂の製造方法、硬化性樹脂組成物、その硬化物、及びプリント配線基板 - Google Patents
変性フェノール樹脂、変性フェノール樹脂の製造方法、変性エポキシ樹脂、変性エポキシ樹脂の製造方法、硬化性樹脂組成物、その硬化物、及びプリント配線基板 Download PDFInfo
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- 0 *Oc1ccccc1 Chemical compound *Oc1ccccc1 0.000 description 3
- UOKZUTXLHRTLFH-UHFFFAOYSA-N NOc1ccccc1 Chemical compound NOc1ccccc1 UOKZUTXLHRTLFH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N c1ccccc1 Chemical compound c1ccccc1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Oc1ccccc1 Chemical compound Oc1ccccc1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/02—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G59/02—Polycondensates containing more than one epoxy group per molecule
- C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
- C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
- C08G59/08—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols from phenol-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0326—Organic insulating material consisting of one material containing O
Definitions
- the present invention relates to a modified phenolic resin and a modified epoxy resin excellent in heat resistance and dielectric properties in a cured product, a production method thereof, a curable resin composition, a cured product thereof, and a printed wiring board.
- a curable resin composition comprising an epoxy resin and its curing agent is widely used as an insulating material for semiconductor encapsulants and printed wiring boards because the cured product is excellent in heat resistance, moisture resistance, insulation, and the like. Yes.
- Examples of conventional insulating materials include a benzyl-modified phenol resin obtained by reacting a phenol resin and a benzylating agent in the presence of an acid catalyst, and a benzyl-modified epoxy resin obtained by reacting the phenol resin with epihalohydrin. It is known (see Patent Document 1). These benzyl-modified phenolic resins and benzyl-modified epoxy resins have low boiling water absorption compared to phenolic resins and epoxy resins before benzyl modification, and are excellent in solder crack resistance, but are heat resistant evaluated at the glass transition temperature. The properties were greatly reduced.
- the problem to be solved by the present invention is to provide a modified phenolic resin and a modified epoxy resin excellent in heat resistance and dielectric properties in a cured product, a production method thereof, a curable resin composition, a cured product thereof, and a printed wiring board. There is to do.
- X is a hydroxyl group or a halogen atom
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms on the aromatic nucleus.
- the modified phenolic resin obtained by modification using the compound (II) represented by the formula (1) and the modified epoxy resin obtained by polyglycidyl etherification of the same are excellent in both heat resistance and dielectric properties in the cured product.
- the headline and the present invention were completed.
- the present invention has a phenol resin structure (A), and at least one of the aromatic nuclei (a) in the phenol resin structure (A) has the following structural formula (1) as a substituent.
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has the structural part (1) represented by these, It is related with the modified phenol resin characterized by the above-mentioned.
- the present invention further comprises phenol resin (I) and the following structural formula (3)
- X is a hydroxyl group or a halogen atom
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms on the aromatic nucleus.
- the compound (II) is reacted at a ratio of 0.1 to 2.0 mol with respect to 1 mol of the phenolic hydroxyl group of the phenol resin (I).
- the present invention relates to a method for producing a modified phenolic resin.
- the present invention further has a polyglycidyl ether structure (B) of a phenol resin, and at least one of the aromatic nuclei (a) in the polyglycidyl ether structure (B) of the phenol resin has the following structural formula (1 )
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has regarding the modified
- the present invention further comprises phenol resin (I) and the following structural formula (3)
- X is a hydroxyl group or a halogen atom
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms on the aromatic nucleus.
- the compound (II) represented by the formula (II) was reacted at a ratio of 0.1 to 2.0 moles with respect to 1 mole of the phenolic hydroxyl group of the phenol resin (I).
- the present invention relates to a method for producing a modified epoxy resin, characterized by reacting a modified phenolic resin with epihalohydrin.
- the present invention further relates to a curable resin composition containing the modified phenolic resin and a curing agent.
- the present invention further relates to a curable resin composition containing the modified epoxy resin and a curing agent.
- the present invention further relates to a cured product obtained by curing the curable resin composition.
- the present invention further relates to a printed wiring board obtained by impregnating a reinforcing base material with a varnish composition in which an organic solvent is blended with the curable resin composition and stacking a copper foil and heat-pressing it.
- a modified phenolic resin and a modified epoxy resin excellent in heat resistance and dielectric properties in a cured product, a production method thereof, a curable resin composition, a cured product thereof, and a printed wiring board.
- FIG. 1 is a GPC chart of the modified phenolic resin (1) obtained in Example 1.
- FIG. FIG. 2 is an MS spectrum of the modified phenolic resin (1) obtained in Example 1.
- FIG. 3 is a GPC chart of the modified epoxy resin (1) obtained in Example 2.
- FIG. 4 is an MS spectrum of the modified epoxy resin (1) obtained in Example 2.
- FIG. 5 is a GPC chart of the modified phenolic resin (2) obtained in Example 3.
- FIG. 6 is an MS spectrum of the modified phenol resin (2) obtained in Example 3.
- FIG. 7 is a GPC chart of the modified epoxy resin (2) obtained in Example 4.
- FIG. 8 is an MS spectrum of the modified epoxy resin (2) obtained in Example 4.
- the modified phenolic resin of the present invention has a phenolic resin structure (A), and at least one of the aromatic nuclei (a) in the phenolic resin structure (A) has the following structural formula (1) as a substituent.
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has the structure site
- such a modified phenolic resin has a structural site (1) represented by the structural formula (1) in the molecular structure, the aromatic ring concentration is higher than that of a general phenolic resin, and the dielectric of the cured product. The rate and dielectric loss tangent can be reduced.
- the presence of the structural site (1) in the molecular structure reduces the phenolic hydroxyl group concentration compared to a general phenol resin, so that the heat resistance in the cured product is considered to be reduced. Due to the rigidity of the structural part (1), a cured product having a low dielectric constant and a low dielectric loss tangent and excellent in heat resistance can be obtained.
- the specific structure of the modified phenolic resin of the present invention is not particularly limited as long as it has a phenol skeleton in the molecular structure and the structural site (1) on the aromatic nucleus.
- the phenolic resin structure (A) of the modified phenolic resin of the present invention includes, for example, a bisphenol type resin structure (A1), a novolac type phenolic resin structure (A2), an aralkyl type phenolic resin structure (A3), and an aliphatic cyclic hydrocarbon group.
- Ph is a phenolic hydroxyl group-containing aromatic hydrocarbon group
- M is a divalent hydrocarbon group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group
- An is an alkoxy group. This is a group-containing condensed polycyclic aromatic hydrocarbon group.
- A5 a resin structure (A5) including a structural moiety represented by
- Examples of the bisphenol type resin structure (A1) include those having a bisphenol skeleton such as bisphenol A, bisphenol F, and bisphenol S in the molecular structure. Specifically, bisphenol itself such as bisphenol A, bisphenol F, and bisphenol S, a phenol resin structure obtained by reacting these bisphenol compounds with epichlorohydrin, or a phenol obtained by reacting bisphenol with a bisphenol type epoxy resin. Resin structure etc. are mentioned.
- the novolak-type phenolic resin structure (A2) includes, for example, a phenol novolak resin; one of ortho-cresol, para-cresol, and meta-cresol, or a cresol novolak resin having a plurality of types of cresol skeletons; any of ⁇ -naphthol and ⁇ -naphthol Or a naphthol novolak resin having both naphthol skeletons; 1,2-dihydroxynaphthalene, 1,4-dihydroxynaphthalene, 1,5-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 2,7- Dihydroxynaphthalene type novolak resin having one or more dihydroxynaphthalene skeletons such as dihydroxynaphthalene; one or more bisphenol skeletons such as bisphenol A, bisphenol F, and bisphenol S Bisphenol type novolac resin; biphenyl type novolak resin, conden
- the aralkyl type phenolic resin structure (A3) is, for example, the following structural formulas (4-1) to (4-5)
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group. And n is an integer from 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group. And n is an integer from 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group. And n is an integer from 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group. And n is an integer from 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group. And n is an integer from 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- n is an integer from 0 to 10.
- the resin structure (A4) having a phenol skeleton knotted through the aliphatic cyclic hydrocarbon group includes, for example, dicyclopentadiene, tetrahydroindene, 4-vinylcyclohexene, 5-vinylnorborna-2-ene, ⁇ -pinene, ⁇
- R 5 is any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and n is an integer of 0 to 10.
- Ph is a phenolic hydroxyl group-containing aromatic hydrocarbon group
- M is a divalent hydrocarbon group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group
- An is an alkoxy group.
- This is a group-containing condensed polycyclic aromatic hydrocarbon group.
- the resin structure (A5) including a structural moiety represented by the following structural formula (2-1) or (2-2)
- the structural site part represented by either of these is mentioned.
- the structural site represented by any of Ph16) is a monovalent aromatic hydrocarbon group.
- those having two or more bonding positions with other structural sites on the naphthalene skeleton may be on the same nucleus or on different nuclei. good.
- the structural portion represented by M is a divalent group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group.
- the alkylidene group is, for example, an ethylidene group, 1,1-propylidene group, 2,2-propylidene group, dimethylene group, propane-1,1,3,3-tetrayl group, n-butane-1, Examples include 1,4,4-tetrayl group and n-pentane-1,1,5,5-tetrayl group.
- the aromatic hydrocarbon structure-containing methylene group specifically includes the following structural formulas (M1) to (M8):
- the structural site represented by M in the above structural formulas (2) and (2-1) to (2-9) is preferably a methylene group from the viewpoint of particularly excellent dielectric effect.
- the modified phenol resin of the present invention has the novolak type phenol resin structure (A2) or a resin structure (A4) in which a phenol skeleton is knotted via an aliphatic cyclic hydrocarbon group. It is preferable because it has excellent heat resistance and dielectric properties in the cured product.
- the novolac type phenolic resin structure (A2) is a phenol novolac resin; orthocresol, paracresol, meta, because a cured product having a good balance between heat resistance and dielectric properties and excellent flame retardancy can be obtained.
- Cresol novolak resin having any one of cresol or plural kinds of cresol skeleton; naphthol novolak resin having either or both of ⁇ -naphthol and ⁇ -naphthol; two types selected from the group consisting of phenol, cresol and naphthol Those having a structure of any one of the above mixed novolak resins having both phenol skeletons are more preferable, and those having a phenol novolac resin structure are particularly preferable.
- the resin structure (A4) in which the phenol skeleton is knotted through the aliphatic cyclic hydrocarbon group a cured product having further excellent dielectric properties can be obtained, so that the phenol skeleton is knotted through the dicyclopentadiene skeleton.
- the following resin structure is preferable. Specifically, the following structural formula (5)
- R 5 is any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and n is an integer of 0 to 10. It is preferable that it is the resin structure represented by either.
- the modified phenolic resin of the present invention has the following structural formula (1) as a substituent on the aromatic nucleus (a).
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has the structure part (1) represented by these.
- Two Ar in the structural site (1) are each independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom on these aromatic nuclei. It is any one of structural parts having one or more substituents of one to plural kinds selected from the group consisting of an atom, a phenyl group and an aralkyl group. Among these, a phenyl group or a naphthyl group is preferable because a cured product having excellent heat resistance and dielectric properties can be obtained, and a phenyl group is preferable because a modified phenol resin can be easily produced.
- the proportion of the phenolic hydroxyl group and the structural moiety represented by the structural formula (1) is 1 mol of the phenolic hydroxyl group because a cured product having excellent heat resistance and dielectric properties can be obtained.
- the structural site represented by the structural formula (1) is preferably in the range of 0.1 to 2.0 mol, and since it becomes a modified phenolic resin excellent in solvent solubility, 1 mol of phenolic hydroxyl group is added.
- the structural site represented by the structural formula (1) is more preferably in the range of 0.4 to 1.2.
- the hydroxyl equivalent of the modified phenolic resin of the present invention is preferably in the range of 150 to 400 g / equivalent because it has excellent reactivity and a good balance between heat resistance and dielectric properties in the cured product.
- the modified phenolic resin of the present invention includes, for example, phenolic resin (I) and the following structural formula (3)
- X is a hydroxyl group or a halogen atom
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms on the aromatic nucleus.
- Ph is a phenolic hydroxyl group-containing aromatic hydrocarbon group
- M is a divalent hydrocarbon group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group
- An is an alkoxy group. This is a group-containing condensed polycyclic aromatic hydrocarbon group.
- each of these phenol resins (I) are as described in detail in the description of the phenol resin structure (A).
- novolak type phenol resins (I2) are excellent because they have excellent heat resistance and dielectric properties in the cured product.
- a resin structure (I4) in which a phenol skeleton is knotted via an aliphatic cyclic hydrocarbon group is excellent.
- the novolak-type phenol resin (I2) As the novolak-type phenol resin (I2), a cured product having a good balance between heat resistance and dielectric properties and excellent flame retardancy can be obtained. Therefore, any of phenol novolak resins; ortho-cresol, para-cresol, and meta-cresol Or a cresol novolak resin having a plurality of types of cresol skeletons; a naphthol novolak resin having one or both of ⁇ -naphthol and ⁇ -naphthol skeletons; two or more types of phenol skeletons selected from the group consisting of phenol, cresol and naphthol Any of the mixed novolac resins having both of these is preferable, and the phenol novolac resin is particularly preferable.
- the resin (I4) in which the phenol skeleton is knotted through the aliphatic cyclic hydrocarbon group a cured product having further excellent dielectric properties can be obtained, so that the phenol skeleton is knotted through the dicyclopentadiene skeleton.
- Those having a resin structure are preferred. Specifically, the following structural formula (5)
- R 5 is any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group, and n is an integer of 0 to 10.
- a dicyclopentadiene-modified phenol resin represented by any of the above is more preferred.
- Compound (II) which is another raw material for the modified phenolic resin, has a molecular structure represented by the structural formula (3). Among them, a cured product having excellent heat resistance and dielectric properties can be obtained.
- Ar in the structural formula (3) is preferably a phenyl group or a naphthyl group, and is preferably a phenyl group because the modified phenolic resin can be easily produced.
- the reaction ratio between the phenol resin (I) and the compound (II) is 1 mol of the phenolic hydroxyl group contained in the phenol resin (I) because a modified phenol resin having excellent heat resistance and dielectric properties in the cured product is obtained.
- the compound (II) is preferably reacted at a ratio in the range of 0.1 to 2.0 mol, and since the modified phenol resin having excellent solvent solubility is obtained, the phenol resin (I) is contained. More preferably, the compound (II) is reacted at a ratio of 0.4 to 1.2 with respect to 1 mol of the phenolic hydroxyl group.
- the reaction between the phenol resin (I) and the compound (II) can be carried out, for example, in the presence of an acid catalyst at a temperature of 80 to 180 ° C.
- an acid catalyst used here include inorganic acids such as phosphoric acid, sulfuric acid, and hydrochloric acid, oxalic acid, benzenesulfonic acid, toluenesulfonic acid, methanesulfonic acid, fluoromethanesulfonic acid and other organic acids, aluminum chloride, zinc chloride, Examples thereof include Friedel-Crafts catalysts such as stannic chloride, ferric chloride, and diethyl sulfate.
- an organic acid is preferable because of excellent reactivity, and toluenesulfonic acid is more preferable.
- the amount of catalyst during the reaction is preferably in the range of 0.01 to 5.0 parts by mass with respect to 100 parts by mass of the reaction raw material because sufficient catalytic ability is exhibited.
- the reaction between the phenol resin (I) and the compound (II) may be performed in an organic solvent as necessary.
- organic solvent used herein include ketone solvents such as acetone, methyl ethyl ketone, and cyclohexanone, acetate solvents such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate, cellosolve, butyl carbitol, and the like.
- Examples thereof include carbitol solvents, aromatic hydrocarbon solvents such as toluene and xylene, dimethylformamide, dimethylacetamide, N-methylpyrrolidone and the like.
- the target modified phenolic resin can be obtained by neutralizing the reaction product and then washing with water.
- the modified epoxy resin of the present invention has a polyglycidyl ether structure (B) of a phenol resin, and at least one of the aromatic nuclei (a) in the polyglycidyl ether structure (B) of the phenol resin is a substituent.
- the following structural formula (1) (1)
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has the structure site
- Such a modified epoxy resin has the same characteristics as the modified phenol resin described above, that is, it is general because it has a structural site (1) represented by the structural formula (1) in the molecular structure. Compared with an epoxy resin, the aromatic ring concentration is high, and the dielectric constant and dielectric loss tangent of the cured product can be reduced. On the other hand, it is considered that the heat resistance in the cured product is lowered because the epoxy group concentration is decreased as compared with a general epoxy resin by having the structural part (1) in the molecular structure. Due to the rigidity of the part (1), a cured product having a low dielectric constant and a low dielectric loss tangent and excellent in heat resistance can be obtained.
- the modified epoxy resin of the present invention has a polyglycidyl ether structure (B) of a phenol resin and has the structural site (1) on the aromatic nucleus
- the polyglycidyl ether structure (B) of the phenol resin which the modified phenolic resin of the present invention has includes, for example, a polyglycidyl ether structure (B1) of a bisphenol type resin, a polyglycidyl ether structure (B2) of a novolac type phenol resin, and an aralkyl type phenol.
- Ph is a glycidyloxy group-containing aromatic hydrocarbon group
- M is a divalent hydrocarbon group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group
- An is an alkoxy group. This is a group-containing condensed polycyclic aromatic hydrocarbon group.
- the resin structure (B5) etc. which are represented by these are mentioned.
- Examples of the polyglycidyl ether structure (B1) of the bisphenol type resin include an epoxy resin structure having a bisphenol skeleton such as bisphenol A, bisphenol F, and bisphenol S in the molecular structure. Specifically, there are epoxy resin structures obtained by reacting bisphenol compounds such as bisphenol A, bisphenol F, and bisphenol S with epichlorohydrin, or epoxy resin structures obtained by reacting bisphenol and bisphenol type epoxy resins. Can be mentioned.
- the polyglycidyl ether structure (B2) of the novolac type phenol resin is, for example, a phenol novolac type epoxy resin; a cresol novolac type epoxy resin having any one of ortho cresol, para cresol and meta cresol or a plurality of cresol skeletons; ⁇ - A naphthol novolak type epoxy resin having a naphthol skeleton of either or both of naphthol and ⁇ -naphthol; 1,2-dihydroxynaphthalene, 1,4-dihydroxynaphthalene, 1,5-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2 Dihydroxynaphthalene novolac epoxy resins having one or more dihydroxynaphthalene skeletons such as 1,6-dihydroxynaphthalene and 2,7-dihydroxynaphthalene; bisphenol A, bisphenol Bisphenol novolak epoxy resin having one or more bisphenol skeletons such as Ru F and bisphenol S; bi
- the polyglycidyl ether structure (B3) of the aralkyl type phenol resin is, for example, the following structural formulas (7-1) to (7-5)
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- G represents a glycidyl group, and n is an integer of 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- G represents a glycidyl group, and n is an integer of 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- G represents a glycidyl group, and n is an integer of 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- G represents a glycidyl group, and n is an integer of 0 to 10.
- R 1 and R 2 are each independently either a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 3 and R 4 are each independently either a hydrogen atom or a methyl group.
- G represents a glycidyl group, and n is an integer of 0 to 10.
- the polyglycidyl ether structure (B4) of a resin having a phenol skeleton knotted via an aliphatic cyclic hydrocarbon group includes, for example, dicyclopentadiene, tetrahydroindene, 4-vinylcyclohexene, 5-vinylnorborn-2-ene, ⁇ - Examples include a polyglycidyl ether structure of a resin having a phenol skeleton knotted via an aliphatic cyclic hydrocarbon group selected from the group consisting of pinene, ⁇ -pinene, and limonene. Specifically, the following structural formula (8 )
- R 5 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group
- G represents a glycidyl group
- n is an integer of 0 to 10
- Ph is a glycidyloxy group-containing aromatic hydrocarbon group
- M is a divalent hydrocarbon group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group
- An is an alkoxy group.
- This is a group-containing condensed polycyclic aromatic hydrocarbon group.
- the resin structure (B5) including the structural portion represented by the following structural formula (6-1) or (6-2)
- the structural site represented by M is a divalent group selected from a methylene group, an alkylidene group, and an aromatic hydrocarbon structure-containing methylene group.
- the alkylidene group is, for example, an ethylidene group, 1,1-propylidene group, 2,2-propylidene group, dimethylene group, propane-1,1,3,3-tetrayl group, n-butane-1, Examples include 1,4,4-tetrayl group and n-pentane-1,1,5,5-tetrayl group.
- the aromatic hydrocarbon structure-containing methylene group specifically includes the following structural formulas (M1) to (M8):
- the structural site represented by M in the structural formulas (6) and (6-1) to (6-9) is preferably a methylene group from the viewpoint of particularly excellent dielectric effect.
- the modified epoxy resin of the present invention has a phenol skeleton knotted through the polyglycidyl ether structure (B2) of the novolak type phenol resin or the aliphatic cyclic hydrocarbon group among the polyglycidyl ether structures (B) of these phenol resins.
- a resin having a polyglycidyl ether structure (B4) is preferred because of its excellent heat resistance and dielectric properties in the cured product.
- the polyglycidyl ether structure (B2) of the novolac type phenolic resin a cured product having a good balance between heat resistance and dielectric properties and excellent flame retardancy can be obtained. Therefore, the phenol novolac type epoxy resin; orthocresol , A cresol novolak type epoxy resin having one or more kinds of cresol skeletons; para-cresol, meta-cresol; naphthol novolak type epoxy resins having one or both of ⁇ -naphthol and ⁇ -naphthol; phenol, cresol, Those having a structure of any of mixed novolak type epoxy resins having two or more types of phenol skeletons selected from the group consisting of naphthol are more preferable, and those having a phenol novolak type epoxy resin structure are particularly preferable.
- polyglycidyl ether structure (B4) of the resin having a phenol skeleton knotted through the aliphatic cyclic hydrocarbon group a cured product having more excellent dielectric properties can be obtained, so that the phenol via the dicyclopentadiene skeleton is obtained.
- a polyglycidyl ether structure of a resin having a skeleton knotted is preferable. Specifically, the following structural formula (8)
- R 5 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group
- G represents a glycidyl group
- n is an integer of 0 to 10. It is preferable that it is the resin structure represented by either.
- the modified epoxy resin of the present invention has the following structural formula (1) as a substituent on the aromatic nucleus (a) as in the modified phenol resin.
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, or an aralkyl group on the aromatic nucleus. It represents any one of the structural parts having one to plural substituents of one to plural kinds selected from the group consisting of It has the structure part (1) represented by these.
- Two Ar in the structural site (1) are each independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom on these aromatic nuclei. It is any one of structural parts having one or more substituents of one to plural kinds selected from the group consisting of an atom, a phenyl group and an aralkyl group. Among these, a phenyl group or a naphthyl group is preferable because a cured product having excellent heat resistance and dielectric properties can be obtained, and a phenyl group is preferable because a modified epoxy resin can be easily produced.
- the proportion of the glycidyloxy group and the structural moiety represented by the structural formula (1) is 1 mol of glycidyloxy group because a cured product having excellent heat resistance and dielectric properties can be obtained.
- the structural site represented by the structural formula (1) is preferably in the range of 0.1 to 2.0 mol, and since it becomes a modified epoxy resin excellent in solvent solubility, 1 mol of glycidyloxy group is added.
- the structural site represented by the structural formula (1) is more preferably in the range of 0.4 to 1.2.
- the epoxy equivalent of the modified epoxy resin of the present invention is preferably in the range of 200 to 600 g / equivalent because it has excellent reactivity and a good balance between heat resistance and dielectric properties in the cured product.
- the modified epoxy resin of the present invention includes, for example, phenol resin (I) and the following structural formula (3)
- X is a hydroxyl group or a halogen atom
- Ar is independently a phenyl group, a naphthyl group, or an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms on the aromatic nucleus.
- It can manufacture by making the compound (II) represented by these react, and making the obtained modified phenol resin and epihalohydrin react, ie, making the modified phenol resin of the present invention and epihalohydrin react.
- the modified phenolic resin and epihalohydrin produced by the above-described method are mixed at a ratio of 2 to 10 mol of epihalohydrin with respect to 1 mol of the phenolic hydroxyl group of the modified phenolic resin, and then modified.
- a method of reacting at a temperature of 20 to 120 ° C. for 0.5 to 10 hours while adding or gradually adding 0.9 to 2.0 mol of a basic catalyst to 1 mol of phenolic hydroxyl group of the phenol resin. can be mentioned.
- Examples of the basic catalyst used here include alkaline earth metal hydroxides, alkali metal carbonates and alkali metal hydroxides, and alkali metals such as sodium hydroxide and potassium hydroxide are excellent because of their excellent catalytic activity. Hydroxides are preferred. These basic catalysts may be used in a solid state or may be used in the form of an aqueous solution of about 10 to 55% by mass. In the case of using an aqueous solution, the catalyst aqueous solution is continuously added to the reaction system, and water and epihalohydrin are continuously discharged from the reaction system under reduced pressure or atmospheric pressure conditions. And may be reacted by a method in which epihalohydrin is continuously returned to the reaction system.
- 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 reaction rate between the modified phenolic resin and epihalohydrin can be increased by carrying out the reaction in an organic solvent.
- organic solvent used herein include ketones such as acetone and methyl ethyl ketone, alcohol compounds such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl cellosolve, ethyl cellosolve, and the like.
- an aprotic polar solvent such as acetonitrile, dimethyl sulfoxide, dimethylformamide, and the like, and other cellosolves, tetrahydrofuran, 1,4-dioxane, 1,3-dioxane, diethoxyethane and the like.
- organic solvents may be used alone or in combination of two or more kinds in order to adjust the polarity.
- the amount used is preferably 0.1 to 3.0 parts by mass with respect to 100 parts by mass of the modified epoxy resin to be used.
- the produced salt is removed by filtration or washing with water, and the solvent used under heating and reduced pressure is distilled off to obtain the target modified epoxy resin of the present invention.
- the curable resin composition of the present invention contains the modified phenolic resin and its curing agent, or the modified epoxy resin and its curing agent as essential components.
- Examples of the compound used as the curing agent for the modified phenol resin in the curable resin composition of the present invention include an epoxy resin.
- the epoxy resin used here is 1,6-diglycidyloxynaphthalene, 2,7-diglycidyloxynaphthalene, ⁇ -naphthol novolak type epoxy resin, ⁇ -naphthol novolak type epoxy resin, ⁇ -naphthol / ⁇ -naphthol co-condensation type novolak polyglycidyl ether, naphthol aralkyl type epoxy resin, 1,1-bis (2,7-diglycidyloxy-1-naphthyl) alkane and other naphthalene skeleton-containing epoxy resin; bisphenol A type epoxy resin Bisphenol type epoxy resin such as bisphenol F type epoxy resin; biphenyl type epoxy resin such as biphenyl type epoxy resin and tetramethylbiphenyl type epoxy resin; phenol novolac type epoxy resin, cresol novolac type epoxy resin, Sphenol A novolak type epoxy resin, bisphenol F novolak type epoxy resin, bisphenol
- the blending ratio of the modified phenol resin and the epoxy resin is equivalent ratio of phenolic hydroxyl group in the modified phenol resin and epoxy group in the epoxy resin (phenolic hydroxyl group / epoxy group). It is preferable that the ratio is 1 / 0.5 to 1 / 1.5 because of excellent reactivity and heat resistance in the cured product.
- an epoxy resin as a hardening
- other curing agents for epoxy resins include various known curing agents such as amine compounds, amide compounds, acid anhydride compounds, and phenol compounds.
- examples of the amine compound include diaminodiphenylmethane, diethylenetriamine, triethylenetetramine, diaminodiphenylsulfone, isophoronediamine, imidazole, BF 3 -amine complex, and guanidine derivative.
- the amide compound include dicyandiamide.
- polyamide resins synthesized from dimer of linolenic acid and ethylenediamine examples include acid anhydride compounds include phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, maleic anhydride, and tetrahydrophthalic anhydride.
- phenolic compounds include phenol novolac resin, cresol novolac resin Aromatic hydrocarbon formaldehyde resin modified phenolic resin, dicyclopentadiene phenol addition type resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, triphenylol methane resin, tetraphenylol ethane resin, naphthol novolak resin, naphthol-phenol co Condensed novolak resin, naphthol-cresol co-condensed novolak resin, biphenyl-modified phenol resin (polyhydric phenol compound in which phenol nucleus is linked by bismethylene group), biphenyl-modified naphthol resin (polyvalent naphthol compound in which phenol nucleus
- the blending ratio of the modified phenolic resin of the present invention and the curing agent for other epoxy resin impairs the effect of the present invention which is excellent in both heat resistance and dielectric properties in the cured product.
- the modified phenolic resin is preferably in the range of 5 to 95 parts by mass in the total mass of 100 parts by mass of both.
- the compounding ratio with the said epoxy resin is the sum total of the active hydrogen atom which the modified phenol resin of this invention and the hardening
- Examples of the compound used as the curing agent for the modified epoxy resin in the curable resin composition of the present invention include various known compounds such as an amine compound, an amide compound, an acid anhydride compound, and a phenol compound.
- a curing agent is mentioned.
- examples of the amine compound include diaminodiphenylmethane, diethylenetriamine, triethylenetetramine, diaminodiphenylsulfone, isophoronediamine, imidazole, BF 3 -amine complex, and guanidine derivative.
- Examples of the amide compound include dicyandiamide. And 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.
- Acid, methyltetrahydrophthalic anhydride, methyl nadic anhydride, hexahydrophthalic anhydride, methylhexahydrophthalic anhydride, etc., and phenolic compounds include phenol novolac resin, cresol novolac resin Aromatic hydrocarbon formaldehyde resin modified phenolic resin, dicyclopentadiene phenol addition type resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, triphenylol methane resin, tetraphenylol ethane resin, naphthol novolak resin, naphthol-phenol co Condensed novolak resin, naphthol-cresol co-condensed novolak resin, biphenyl-modified phenol
- the blending ratio of the modified epoxy resin and the curing agent is such that the equivalent ratio (epoxy group / active hydrogen atom) of the epoxy group in the modified epoxy resin to the active hydrogen atom in the curing agent is 1 / 0.5 to 1.
- a ratio of /1.5 is preferable because of excellent reactivity and heat resistance in the cured product.
- other epoxy resins may be used in combination with the modified epoxy resin.
- other epoxy resins used here include 1,6-diglycidyloxynaphthalene, 2,7-diglycidyloxynaphthalene, ⁇ -naphthol novolak epoxy resin, ⁇ -naphthol novolak epoxy resin, ⁇ - Naphthene / ⁇ -naphthol co-condensation type novolak polyglycidyl ether, naphthol aralkyl type epoxy resin, 1,1-bis (2,7-diglycidyloxy-1-naphthyl) alkane and other naphthalene skeleton-containing epoxy resins; bisphenol A type Bisphenol type epoxy resins such as epoxy resins and bisphenol F type epoxy resins; Biphenyl type epoxy resins such as biphenyl type epoxy resins and tetramethylbiphenyl type epoxy resins; Phen
- the blending ratio of the modified epoxy resin of the present invention and the other epoxy resin is within a range that does not impair the effect of the present invention that is excellent in both heat resistance and dielectric properties in a cured product.
- the modified epoxy resin is preferably in the range of 5 to 95 parts by mass in a total mass of 100 parts by mass of both.
- the blending ratio with the curing agent is an equivalent ratio of epoxy groups in all epoxy components in the curable resin composition and active hydrogen atoms in the curing agent (epoxy groups /
- the ratio of active hydrogen atoms) to 1 / 0.5 to 1 / 1.5 is preferable because of excellent reactivity and heat resistance in the cured product.
- a curing accelerator can be used in combination with the curable resin composition of the present 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.
- 2-ethyl-4-methylimidazole is used for imidazole compounds
- triphenylphosphine is used for phosphorus compounds
- 1,8-- is used for tertiary amines because of its excellent curability, heat resistance, electrical properties, moisture resistance reliability, and the like.
- Diazabicyclo- [5.4.0] -undecene (DBU) is preferred.
- the curable resin composition of the present invention may further contain various compounding agents such as a flame retardant, an inorganic filler, a silane coupling agent, a release agent, a pigment, and an emulsifier.
- various compounding agents such as a flame retardant, an inorganic filler, a silane coupling agent, a release agent, a pigment, and an emulsifier.
- non-halogen flame retardant examples include phosphorus flame retardant, nitrogen flame retardant, silicone flame retardant, inorganic flame retardant, and organic metal salt flame retardant. These may be used alone or in combination.
- the phosphorus flame retardant can be either inorganic or organic.
- the inorganic compound include phosphorous such as red phosphorus, monoammonium phosphate, diammonium phosphate, triammonium phosphate, and ammonium polyphosphate.
- examples thereof include inorganic nitrogen-containing phosphorus compounds such as ammonium acids and phosphoric acid amides.
- the red phosphorus is preferably subjected to a surface treatment for the purpose of preventing hydrolysis and the like, and the surface treatment method is, for example, (i) magnesium hydroxide, aluminum hydroxide, zinc hydroxide, titanium hydroxide, oxidation A method of coating with an inorganic compound such as bismuth, bismuth hydroxide, bismuth nitrate, or a mixture thereof; (ii) inorganic compounds such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, titanium hydroxide, and phenol resins; (Iii) Double coating with a thermosetting resin such as a phenol resin on a coating of an inorganic compound such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, or titanium hydroxide. And the like.
- the surface treatment method is, for example, (i) magnesium hydroxide, aluminum hydroxide, zinc hydroxide, titanium hydroxide, oxidation A method of coating with an inorganic compound such as bismuth, bismuth hydroxide,
- organic phosphorus compounds examples include 9,10-dihydro, as well as general-purpose organic phosphorus compounds such as phosphate ester compounds, phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphorane compounds, and organic nitrogen-containing phosphorus compounds.
- the blending amount thereof is appropriately selected depending on the type of the phosphorus-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- 100 parts by mass of the curable resin composition when red phosphorus is used as a non-halogen flame retardant, it is preferably blended in the range of 0.1 to 2.0 parts by mass.
- red phosphorus when used as a non-halogen flame retardant, it is preferably blended in the range of 0.1 to 2.0 parts by mass.
- an organic phosphorus compound is used, 0.1 to 10.0 is similarly applied. It is preferably blended in the range of parts by mass, and particularly preferably in the range of 0.5 to 6.0 parts by mass.
- the phosphorous flame retardant when using the phosphorous flame retardant, may be used in combination with hydrotalcite, magnesium hydroxide, boric compound, zirconium oxide, black dye, calcium carbonate, zeolite, zinc molybdate, activated carbon, etc. Good.
- nitrogen flame retardant examples include triazine compounds, cyanuric acid compounds, isocyanuric acid compounds, phenothiazines, and the like, and triazine compounds, cyanuric acid compounds, and isocyanuric acid compounds are preferable.
- triazine compound examples include melamine, acetoguanamine, benzoguanamine, melon, melam, succinoguanamine, ethylene dimelamine, melamine polyphosphate, triguanamine, and the like, for example, (i) guanylmelamine sulfate, melem sulfate, melam sulfate (Ii) Co-condensates of phenolic compounds such as phenol, cresol, xylenol, butylphenol, nonylphenol with melamines such as melamine, benzoguanamine, acetoguanamine, formguanamine and formaldehyde, (iii) (Ii) a mixture of a co-condensate of (ii) and a phenol resin such as a phenol formaldehyde condensate, (iv) a mixture of (ii) and (iii) further modified with paulownia oil, isomerized lins
- cyanuric acid compound examples include cyanuric acid and melamine cyanurate.
- the compounding amount of the nitrogen-based flame retardant is appropriately selected depending on the type of the nitrogen-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- the curable resin composition It is preferable to mix in the range of 0.05 to 10 parts by mass, particularly in the range of 0.1 to 5 parts by mass, in 100 parts by mass of the product.
- a metal hydroxide, a molybdenum compound or the like may be used in combination.
- the silicone flame retardant is not particularly limited as long as it is an organic compound containing a silicon atom, and examples thereof include silicone oil, silicone rubber, and silicone resin.
- the amount of the silicone-based flame retardant is appropriately selected depending on the type of the silicone-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- the curable resin composition It is preferable to blend in the range of 0.05 to 20 parts by mass in 100 parts by mass of the product.
- inorganic flame retardant examples include metal hydroxide, metal oxide, metal carbonate compound, metal powder, boron compound, and low melting point glass.
- metal hydroxide examples include aluminum hydroxide, magnesium hydroxide, dolomite, hydrotalcite, calcium hydroxide, barium hydroxide, and zirconium hydroxide.
- metal oxide examples include zinc molybdate, molybdenum trioxide, zinc stannate, tin oxide, aluminum oxide, iron oxide, titanium oxide, manganese oxide, zirconium oxide, zinc oxide, molybdenum oxide, cobalt oxide, bismuth oxide, Examples thereof include chromium oxide, nickel oxide, copper oxide, and tungsten oxide.
- metal carbonate compound examples include zinc carbonate, magnesium carbonate, calcium carbonate, barium carbonate, basic magnesium carbonate, aluminum carbonate, iron carbonate, cobalt carbonate, and titanium carbonate.
- metal powder examples include aluminum, iron, titanium, manganese, zinc, molybdenum, cobalt, bismuth, chromium, nickel, copper, tungsten, and tin.
- Examples of the boron compound include zinc borate, zinc metaborate, barium metaborate, boric acid, and borax.
- low-melting-point glass examples include Shipley (Bokusui Brown), hydrated glass SiO 2 —MgO—H 2 O, PbO—B 2 O 3 system, ZnO—P 2 O 5 —MgO system, and P 2 O 5. Glassy compounds such as —B 2 O 3 —PbO—MgO, P—Sn—O—F, PbO—V 2 O 5 —TeO 2 , Al 2 O 3 —H 2 O, and lead borosilicate Can be mentioned.
- the amount of the inorganic flame retardant is appropriately selected depending on the type of the inorganic flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- the curable resin composition It is preferable to mix in the range of 0.5 to 50 parts by mass, particularly in the range of 5 to 30 parts by mass in 100 parts by mass of the product.
- organometallic salt flame retardant for example, ferrocene, acetylacetonate metal complex, organometallic carbonyl compound, organocobalt salt compound, organosulfonic acid metal salt, metal atom and aromatic compound or heterocyclic compound are ionically bonded or coordinated Examples include a bonded compound.
- the amount of the organic metal salt flame retardant is appropriately selected according to the type of the organic metal salt flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy. It is preferable to blend in the range of 0.005 to 10 parts by mass in 100 parts by mass of the curable resin composition.
- the inorganic filler examples include fused silica, crystalline silica, alumina, silicon nitride, and aluminum hydroxide. Especially, since it becomes possible to mix
- the fused silica can be used in either crushed or spherical shape, but in order to increase the blending amount of the fused silica and to suppress an increase in the melt viscosity of the curable composition, a spherical one is mainly used. It is preferable. Furthermore, in order to increase the blending amount of the spherical silica, it is preferable to appropriately adjust the particle size distribution of the spherical silica.
- the filling rate is preferably in the range of 0.5 to 100 parts by mass in 100 parts by mass of the curable resin composition.
- a conductive filler such as silver powder or copper powder can be used.
- an organic solvent examples include methyl ethyl ketone, acetone, dimethylformamide, methyl isobutyl ketone, methoxypropanol, cyclohexanone, methyl cellosolve, ethyl diglycol acetate, and propylene glycol monomethyl ether acetate.
- the amount used can be appropriately selected depending on the application. For example, in the printed wiring board application, it is preferable to use a polar solvent having a boiling point of 160 ° C.
- methyl ethyl ketone such as methyl ethyl ketone, acetone, dimethylformamide, and the non-volatile content is 40 to 80% by mass. It is preferable to use in the ratio which becomes.
- organic solvents for example, ketones such as acetone, methyl ethyl ketone, cyclohexanone, acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, carbitol acetate, It is preferable to use carbitols such as cellosolve and butyl carbitol, aromatic hydrocarbons such as toluene and xylene, dimethylformamide, dimethylacetamide, N-methylpyrrolidone and the like, and the nonvolatile content is 30 to 60% by mass. It is preferable to use in proportions.
- the curable resin composition of the present invention can be obtained by uniformly mixing the above-described components. Moreover, the obtained curable resin composition can be easily made into a cured product by a method similar to a conventionally known method. Examples of the cured product include molded cured products such as laminates, cast products, adhesive layers, coating films, and films.
- curable composition of the present invention includes printed wiring board materials, resin casting materials, adhesives, build-up board interlayer insulating materials, build-up adhesive films, and the like.
- printed circuit boards insulating materials for electronic circuit boards, and adhesive films for build-up, passive parts such as capacitors and active parts such as IC chips are embedded in so-called electronic parts. It can be used as an insulating material for a substrate.
- the printed wiring board material and the adhesive film for buildup from the characteristics, such as high heat resistance and a flame retardance.
- a resin composition blended with the organic solvent (C) and varnished is impregnated into a reinforcing base material, and a copper foil is overlaid and heated.
- the method of making it crimp is mentioned.
- the reinforcing substrate that can be used here include paper, glass cloth, glass nonwoven fabric, aramid paper, aramid cloth, glass mat, and glass roving cloth.
- the varnish-like curable composition described above is first heated at a heating temperature corresponding to the solvent type used, preferably 50 to 170 ° C., so that a prepreg as a cured product is obtained. obtain.
- the mass ratio of the curable composition and the reinforcing substrate used at this time is not particularly limited, but it is usually preferable to prepare so that the resin content in the prepreg is 20 to 60 mass%.
- the prepreg obtained as described above is laminated by a conventional method, and a copper foil is appropriately stacked, and heat-pressed at 170 to 250 ° C. for 10 minutes to 3 hours under a pressure of 1 to 10 MPa, A desired printed circuit board can be obtained.
- a cationic polymerization catalyst is used as a catalyst for the curable composition, and a pigment, talc, and filler are further added to form a resist ink composition. Then, after apply
- the curable composition of the present invention is used as a conductive paste, for example, a method of dispersing fine conductive particles in the curable composition to obtain a composition for an anisotropic conductive film, which is liquid at room temperature
- a method of dispersing fine conductive particles in the curable composition to obtain a composition for an anisotropic conductive film, which is liquid at room temperature
- the method include a paste resin composition for circuit connection and an anisotropic conductive adhesive.
- the curable composition of the present invention As a method for obtaining an interlayer insulating material for a build-up substrate from the curable composition of the present invention, for example, the curable composition appropriately blended with rubber, filler, etc. After applying using a coating method or the like, it is cured. Then, after drilling a predetermined through-hole part etc. as needed, it treats with a roughening agent, forms the unevenness
- the plating method electroless plating or electrolytic plating treatment is preferable, and examples of the roughening agent include an oxidizing agent, an alkali, and an organic solvent.
- a build-up base can be obtained by alternately building up and forming the resin insulating layer and the conductor layer having a predetermined circuit pattern.
- the through-hole portion is formed after the outermost resin insulating layer is formed.
- a copper foil with a resin obtained by semi-curing the curable composition on a copper foil is heat-pressed at 170 to 250 ° C. on a wiring board on which a circuit is formed, thereby forming a roughened surface and plating treatment. It is also possible to produce a build-up substrate by omitting this process.
- the method for producing an adhesive film for buildup from the curable composition of the present invention is, for example, applied for a multilayer printed wiring board by applying the curable composition of the present invention on a support film to form a resin composition layer.
- the method of using an adhesive film is mentioned.
- the adhesive film is softened under the lamination temperature condition (usually 70 ° C. to 140 ° C.) in the vacuum laminating method, and simultaneously with the lamination of the circuit board, It is important to show fluidity (resin flow) capable of filling the via hole or through hole in the substrate, and it is preferable to blend the above-described components so as to exhibit such characteristics.
- lamination temperature condition usually 70 ° C. to 140 ° C.
- the diameter of the through hole of the multilayer printed wiring board is usually 0.1 to 0.5 mm, and the depth is usually 0.1 to 1.2 mm. Usually, it is preferable that the resin can be filled in this range. When laminating both surfaces of the circuit board, it is desirable to fill about 1/2 of the through hole.
- the method for producing the above-mentioned adhesive film is prepared by preparing the varnish-like curable composition of the present invention, and then applying the varnish-like composition to the surface of the support film (y). It can be produced by drying the organic solvent by heating or blowing hot air to form the layer (x) of the curable resin composition.
- the thickness of the layer (x) to be formed is usually not less than the thickness of the conductor layer. Since the thickness of the conductor layer of the circuit board is usually in the range of 5 to 70 ⁇ m, the thickness of the resin composition layer is preferably 10 to 100 ⁇ m.
- the layer (x) in this invention may be protected with the protective film mentioned later.
- a protective film By protecting with a protective film, it is possible to prevent dust and the like from being attached to the surface of the curable composition layer and scratches.
- the above-mentioned support film and protective film are made of polyolefin such as polyethylene, polypropylene and polyvinyl chloride, polyethylene terephthalate (hereinafter sometimes abbreviated as “PET”), polyester such as polyethylene naphthalate, polycarbonate, polyimide, and further. Examples thereof include metal foil such as pattern paper, copper foil, and aluminum foil.
- the support film and the protective film may be subjected to a release treatment in addition to the mat treatment and the corona treatment.
- the thickness of the support film is not particularly limited, but is usually 10 to 150 ⁇ m, preferably 25 to 50 ⁇ m.
- the thickness of the protective film is preferably 1 to 40 ⁇ m.
- the support film (y) described above is peeled off after being laminated on a circuit board or after forming an insulating layer by heat curing. If the support film (y) is peeled after the adhesive film is heat-cured, adhesion of dust and the like in the curing process can be prevented. In the case of peeling after curing, the support film is usually subjected to a release treatment in advance.
- a method for producing a multilayer printed wiring board using the adhesive film obtained as described above is, for example, when the layer (x) is protected with a protective film, after peeling these layers ( x) is laminated on one side or both sides of the circuit board so as to be in direct contact with the circuit board, for example, by a vacuum laminating method.
- the laminating method may be a batch method or a continuous method using a roll.
- the adhesive film and the circuit board may be heated (preheated) as necessary before lamination.
- the lamination conditions are such that the pressure bonding temperature (lamination temperature) is preferably 70 to 140 ° C., the pressure bonding pressure is preferably 1 to 11 kgf / cm 2 (9.8 ⁇ 10 4 to 107.9 ⁇ 104 N / m 2), and the air pressure is 20 mmHg (26 It is preferable to laminate under a reduced pressure of 0.7 hPa or less.
- the composition obtained by the above method may be heated in a temperature range of about 20 to 250 ° C.
- GPC 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 Developing solvent Tetrahydrofuran Flow rate 1.0 ml / min Standard: The following monodisperse polystyrene having a known molecular weight was used according to the measurement manual of “GPC-8020 model II version 4.10”.
- Example 1 Production of Modified Phenolic Resin (1) A flask equipped with a thermometer, dropping funnel, condenser, fractionator, and stirrer was charged with phenol novolac resin (“TD-2131” manufactured by DIC Corporation): hydroxyl group equivalent of 104 g / Eq.) Was charged with 520 parts by mass (5.0 moles), 552 parts by weight (3.0 moles) of benzhydrol, 10.7 parts by weight (0.06 moles) of paratoluenesulfonic acid, and 100 ° C. while blowing nitrogen For 3 hours.
- phenol novolac resin (“TD-2131” manufactured by DIC Corporation): hydroxyl group equivalent of 104 g / Eq.) was charged with 520 parts by mass (5.0 moles), 552 parts by weight (3.0 moles) of benzhydrol, 10.7 parts by weight (0.06 moles) of paratoluenesulfonic acid, and 100 ° C. while blowing nitrogen For 3 hours.
- Example 2 Production of Modified Epoxy Resin (1) 105 parts by mass of modified phenolic resin (1) obtained in Example 1 while purging a flask equipped with a thermometer, condenser and stirrer with nitrogen gas (0.5 equivalent of hydroxyl group) ), 463 parts by mass of epichlorohydrin (5.0 mol) and 53 parts by mass of n-butanol were charged and dissolved. After raising the temperature to 50 ° C., 110 parts by mass (0.55 mol) of a 20% aqueous sodium hydroxide solution was added over 3 hours, and the mixture was reacted at 50 ° C. for 1 hour.
- the system was dehydrated by azeotropic distillation, and after passing through microfiltration, the solvent was distilled off under reduced pressure, and a modified epoxy resin (1) having the following structural site (c) and the following structural site (d) as repeating units. 130 parts by mass were obtained.
- the epoxy equivalent of the modified epoxy resin (1) was 260 g / equivalent.
- the GPC chart of the modified epoxy resin (1) is shown in FIG. 3, and the MS spectrum is shown in FIG.
- Example 4 Production of Modified Epoxy Resin (2) 135 parts by mass of modified phenolic resin (2) obtained in Example 3 while purging nitrogen gas purge to a flask equipped with a thermometer, condenser and stirrer (0.5 equivalent of hydroxyl group) ), 463 parts by mass (5.0 mol) of epichlorohydrin and 53 parts by mass of n-butanol were charged and dissolved. After raising the temperature to 50 ° C., 110 parts by mass (0.55 mol) of a 20% aqueous sodium hydroxide solution was added over 3 hours, and the mixture was reacted at 50 ° C. for 1 hour.
- methyl isobutyl ketone was charged, and neutralized by adding 3.6 parts by mass (0.04 mol) of a 49% aqueous sodium hydroxide solution. After the organic layer was washed with 500 parts by mass of water three times, methyl isobutyl ketone was removed by heating under reduced pressure, and a phenol resin (1 ′) having the following structural site (i) and the following structural site (j) as repeating units. ) 770 parts by weight were obtained. The obtained phenol resin (1 ′) had a hydroxyl group equivalent of 160 g / equivalent.
- the system was dehydrated by azeotropic distillation, and after microfiltration, the solvent was distilled off under reduced pressure, and the epoxy resin (1 ′) 100 having the following structural site (ki) and the following structural site (l) as repeating units was used. A mass part was obtained.
- the epoxy equivalent of the obtained epoxy resin (1 ′) was 240 g / equivalent.
- Examples 5 and 6 and Comparative Example 1 A curable resin composition and a laminate were prepared in the following manner, and various evaluations were performed. The results are shown in Table 1.
- a laminate was prepared using the curable composition obtained above under the following conditions.
- Base material Glass cloth “# 2116” (210 ⁇ 280 mm) manufactured by Nitto Boseki Co., Ltd.
- Number of plies 6 Condition of prepreg: 160 ° C Curing conditions: 200 ° C., 40 kg / cm 2 for 1.5 hours, thickness after molding: 0.8 mm
- Examples 7 and 8 and Comparative Example 2 A curable resin composition was prepared in the following manner. Using this, laminates were prepared in the same manner as in Examples 5 and 6, and various evaluations were performed. The results are shown in Table 2.
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Abstract
Description
で表される化合物(II)を用いて変性して得られる変性フェノール樹脂、及びこれをポリグリシジルエーテル化して得られる変性エポキシ樹脂は、硬化物における耐熱性と誘電特性との両方に優れることを見出し、本発明を完成するに至った。
で表される構造部位(1)を有することを特徴とする変性フェノール樹脂に関する。
で表される化合物(II)とを、フェノール樹脂(I)が有するフェノール性水酸基1モルに対し、前記化合物(II)が0.1~2.0モルとなる割合で反応させることを特徴とする変性フェノール樹脂の製造方法に関する。
で表される構造部位(1)を有することを特徴とする変性エポキシ樹脂に関する。
で表される化合物(II)とを、フェノール樹脂(I)が有するフェノール性水酸基1モルに対し、前記化合物(II)が0.1~2.0モルとなる割合で反応させ、得られた変性フェノール樹脂とエピハロヒドリンとを反応させることを特徴とする変性エポキシ樹脂の製造方法に関する。
本発明の変性フェノール樹脂は、フェノール樹脂構造(A)を有し、該フェノール樹脂構造(A)中の芳香核(a)の少なくとも一つが置換基として下記構造式(1)
で表される構造部位(1)を有することを特徴とする。
で表される構造部位を含む樹脂構造(A5)等が挙げられる。
の何れかで表される樹脂構造等が挙げられる。
で表される構造部位を含む樹脂構造(A5)は、例えば、下記構造式(2-1)又は(2-2)
で表される構造部位(1)を有する。
で表される化合物(II)とを反応させることにより製造することが出来る。
で表される樹脂(I5)等が挙げられる。
で表される構造部位(1)を有することを特徴とする。
で表される樹脂構造(B5)等が挙げられる。
の何れかで表される樹脂構造等が挙げられる。
で表される構造部位を含む樹脂構造(B5)は、例えば、下記構造式(6-1)又は(6-2)
の何れかで表される構造部位が挙げられる。前記構造式(6)及び(6-1)~(6-9)中、Phで表されるグリシジルオキシ基含有芳香族炭化水素基が分子末端に位置する場合には、上記(Ph17)~(Ph32)の何れかで表される構造部位は1価の芳香族炭化水素基となる。また、前記各構造のうちナフタレン骨格上に他の構造部位との結合位置を二つ以上有するものは、それらの結合位置は同一核上であっても良いし、それぞれ異核上にあっても良い。
で表される構造部位(1)を有する。
で表される化合物(II)とを反応させ、得られた変性フェノール樹脂とエピハロヒドリンとを反応させる方法、即ち、前記本発明の変性フェノール樹脂とエピハロヒドリンとを反応させることにより製造することが出来る。
」は特に断わりのない限り質量基準である。尚、GPC及びMSは以下の条件にて測定した。
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℃
展開溶媒 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。
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)。
H)
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、フェノールノボラック樹脂(DIC株式会社製「TD-2131」:水酸基当量104g/当量)を520質量部(5.0モル)、ベンズヒドロール552質量部(3.0モル)、パラトルエンスルホン酸10.7質量部(0.06モル)を仕込み、窒素を吹き込みながら100℃で3時間撹拌した。反応終了後、メチルイソブチルケトン1608質量部を仕込み、49%水酸化ナトリウム水溶液4.6質量部(0.06モル)を添加して中和した。有機層を水500質量部で3回水洗を繰り返した後に、メチルイソブチルケトンを加熱減圧下に除去し、下記構造部位(a)及び下記構造部位(b)を繰り返し単位とする変性フェノール樹脂(1)1010質量部を得た。変性フェノール樹脂(1)の水酸基当量は210g/当量であった。変性フェノール樹脂(1)のGPCチャートを図1に、MSスペクトルを図2に示す。
温度計、冷却管、撹拌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実施例1で得た変性フェノール樹脂(1)105質量部(水酸基0.5当量)、エピクロルヒドリン463質量部(5.0モル)、n-ブタノール53質量部を仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液110質量部(0.55モル)を3時間かけて添加し、50℃で1時間反応させた。反応終了後、150℃減圧条件下で未反応のエピクロルヒドリンを留去し、得られた粗製生物にメチルイソブチルケトン300質量部とn-ブタノール50質量部とを加え溶解した。更にこの溶液に10%水酸化ナトリウム水溶液15質量部を添加して80℃で2時間反応させた後、洗浄液のPHが中性となるまで水100質量部で水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧条件下で留去し、下記構造部位(c)及び下記構造部位(d)を繰り返し単位とする変性エポキシ樹脂(1)130質量部を得た。変性エポキシ樹脂(1)のエポキシ当量は260g/当量であった。変性エポキシ樹脂(1)のGPCチャートを図3に、MSスペクトルを図4に示す。
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、ジシクロペンタジエン骨格含有フェノール樹脂(JFEケミカル株式会社製「J-DPP-85」水酸基当量170g/当量)を850質量部(5.0モル)、ベンズヒドロール552質量部(3.0モル)、パラトルエンスルホン酸14.0質量部(0.07モル)を仕込み、窒素を吹き込みながら100℃で3時間撹拌した。反応終了後、メチルイソブチルケトン2103質量部を仕込み、49%水酸化ナトリウム水溶液6.0質量部(0.07モル)を添加して中和した。有機層を水500質量部で3回水洗を繰り返した後に、メチルイソブチルケトンを加熱減圧下に除去し、下記構造部位(e)及び下記構造部位(f)を繰り返し単位とする変性フェノール樹脂(2)1340質量部を得た。得られた変性フェノール樹脂(2)の水酸基当量は270g/当量であった。変性フェノール樹脂(2)のGPCチャートを図5に、MSスペクトルを図6に示す。
温度計、冷却管、撹拌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実施例3で得た変性フェノール樹脂(2)135質量部(水酸基0.5当量)、エピクロルヒドリン463質量部(5.0モル)、n-ブタノール53質量部を仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液110質量部(0.55モル)を3時間かけて添加し、50℃で1時間反応させた。反応終了後、150℃減圧条件下で未反応のエピクロルヒドリンを留去し、得られた粗製生物にメチルイソブチルケトン300質量部とn-ブタノール50質量部とを加え溶解した。更にこの溶液に10%水酸化ナトリウム水溶液15質量部を添加して80℃で2時間反応させた後、洗浄液のPHが中性となるまで水100質量部で水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧下で留去して下記構造部位(g)及び下記構造部位(h)を繰り返し単位とする変性エポキシ樹脂(2)160質量部を得た。変性エポキシ樹脂(2)のエポキシ当量は326g/当量であった。変性エポキシ樹脂(2)のGPCチャートを図7に、MSスペクトルを図8に示す。
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、フェノールノボラック樹脂(DIC株式会社製「TD-2131」:水酸基当量104g/当量)を520質量部(5.0モル)、ベンジルアルコール324質量部(3.0モル)、パラトルエンスルホン酸8.4質量部(0.04モル)を仕込み、窒素を吹き込みながら100℃で3時間撹拌した。反応終了後、メチルイソブチルケトン1608質量部を仕込み、49%水酸化ナトリウム水溶液3.6質量部(0.04モル)を添加して中和した。有機層を水500質量部で3回水洗を繰り返した後に、メチルイソブチルケトンを加熱減圧下に除去し、下記構造部位(i)及び下記構造部位(j)を繰り返し単位とするフェノール樹脂(1’)770質量部を得た。得られたフェノール樹脂(1’)の水酸基当量は160g/当量であった。
温度計、冷却管、撹拌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比較製造例1で得たフェノール樹脂(A1’)80質量部(水酸基0.5当量)、エピクロルヒドリン463質量部(5.0モル)、n-ブタノール53質量部を仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液110質量部(0.55モル)を3時間かけて添加し、その後更に50℃で1時間反応させた。反応終了後、150℃減圧条件下で未反応のエピクロルヒドリンを留去し、得られた粗製生物にメチルイソブチルケトン300質量部とn-ブタノール50質量部とを加え溶解した。更にこの溶液に10%水酸化ナトリウム水溶液15質量部を添加して80℃で2時間反応させた後に洗浄液のPHが中性となるまで水100質量部で水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧下で留去して下記構造部位(ki)及び下記構造部位(l)を繰り返し単位とするエポキシ樹脂(1’)100質量部を得た。得られたエポキシ樹脂(1’)のエポキシ当量は240g/当量であった。
下記要領で硬化性樹脂組成物及び積層板を作成し、各種評価を行った。結果を表1に示す。
フェノールノボラック型エポキシ樹脂(DIC株式会社製「N-770」エポキシ当量190g/当量)、先で得た変性フェノール樹脂(1)、(2)、又はフェノール樹脂(1’)の何れか、硬化促進剤として2-エチル4-メチルイミダゾール(2E4MZ)、及びメチルエチルケトンを下記表1に示した組成で配合し、硬化性樹脂組成物を得た。
先で得た硬化性組成物を用い、下記条件で積層板を作成した。
基材:日東紡績株式会社製 ガラスクロス「#2116」(210×280mm)
プライ数:6 プリプレグ化条件:160℃
硬化条件:200℃、40kg/cm2で1.5時間、成型後板厚:0.8mm
先で得た積層板を絶乾後23℃、湿度50%の室内に24時間保管したものを試験片とし、JIS-C-6481に準拠し、アジレント・テクノロジー株式会社製インピーダンス・マテリアル・アナライザ「HP4291B」を用いて1GHzでの誘電率および誘電正接を測定した。結果を下記表1に示す。
先で得た積層板について、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)を用いて粘弾性を測定し、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。結果を表1に示す。
前記変性フェノール樹脂(1)又はフェノール樹脂(1’)を用いて得られた積層板につき、UL-94垂直試験に準拠して難燃性試験を実施した。前記変性フェノール樹脂(1)を用いて得られた積層板はV-1レベルの難燃性を示したのに対し、前記フェノール樹脂(1’)を用いて得られた積層板は燃焼した。
下記要領で硬化性樹脂組成物を調整した。これを用いて実施例5、6と同様の方法で積層板を作成し、各種評価を行った。結果を表2に示す。
フェノールノボラック樹脂(DIC株式会社製「TD-2090」水酸基当量105g/当量)、先で得た変性エポキシ樹脂(1)、(2)、又はエポキシ樹脂(1’)の何れか、硬化促進剤として2-エチル4-メチルイミダゾール(2E4MZ)、及びメチルエチルケトンを下記表2に示した組成で配合し、硬化性樹脂組成物を得た。
前記変性エポキシ樹脂(1)又はエポキシ樹脂(1’)を用いて得られた積層板につき、UL-94垂直試験に準拠して難燃性試験を実施した。前記変性エポキシ樹脂(1)を用いて得られた積層板はV-1レベルの難燃性を示したのに対し、前記エポキシ樹脂(1’)を用いて得られた積層板は燃焼した。
Claims (12)
- 請求項3記載の製造方法により得られる変性フェノール樹脂。
- 前記フェノール樹脂のポリグリシジルエーテル構造(B)が、ビスフェノール型樹脂のポリグリシジルエーテル構造(B1)、ノボラック型フェノール樹脂のポリグリシジルエーテル構造(B2)、アラルキル型フェノール樹脂のポリグリシジルエーテル構造(B3)、脂肪族環状炭化水素基を介してフェノール骨格が結節された樹脂のポリグリシジルエーテル構造(B4)、又は下記構造式(6)
で表される樹脂構造(B5)の何れかである請求項5記載の変性エポキシ樹脂。 - 請求項7記載の製造方法により得られる変性エポキシ樹脂。
- 請求項1、2又は4の何れか一つに記載の変性フェノール樹脂と硬化剤とを含有する硬化性樹脂組成物。
- 請求項5、6又は8の何れか一つに記載の変性エポキシ樹脂と硬化剤とを含有する硬化性樹脂組成物。
- 請求項9又は10に記載の硬化性樹脂組成物を硬化させてなる硬化物。
- 請求項9又は10記載の硬化性樹脂組成物に有機溶剤を配合したワニス組成物を補強基材に含浸し銅箔を重ねて加熱圧着させることにより得られるプリント配線基板。
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US14/784,771 US10017604B2 (en) | 2013-04-19 | 2014-02-27 | Modified phenolic resin, method for producing modified phenolic resin, modified epoxy resin, method for producing modified epoxy resin, curable resin composition, cured product of same, and printed wiring board |
CN201480022279.1A CN105121489B (zh) | 2013-04-19 | 2014-02-27 | 改性酚醛树脂和改性环氧树脂及其制造方法、固化性树脂组合物、其固化物和印刷电路基板 |
JP2014531802A JP5614519B1 (ja) | 2013-04-19 | 2014-02-27 | 変性フェノール樹脂、変性フェノール樹脂の製造方法、変性エポキシ樹脂、変性エポキシ樹脂の製造方法、硬化性樹脂組成物、その硬化物、及びプリント配線基板 |
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CN106916268B (zh) * | 2015-12-25 | 2019-06-14 | 广东生益科技股份有限公司 | 一种酸酐改性线性酚醛树脂、制备方法及用途 |
TWI775905B (zh) * | 2017-07-25 | 2022-09-01 | 日商松下知識產權經營股份有限公司 | 多層印刷配線板之製造方法 |
WO2021106848A1 (ja) * | 2019-11-29 | 2021-06-03 | 東洋紡株式会社 | 接着剤組成物、接着シート、積層体およびプリント配線板 |
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JP5614519B1 (ja) | 2014-10-29 |
US20160060384A1 (en) | 2016-03-03 |
US10017604B2 (en) | 2018-07-10 |
TW201443138A (zh) | 2014-11-16 |
KR20150143467A (ko) | 2015-12-23 |
KR102088237B1 (ko) | 2020-03-12 |
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