WO2011045941A1 - エポキシ硬化樹脂形成用組成物及びその硬化物 - Google Patents
エポキシ硬化樹脂形成用組成物及びその硬化物 Download PDFInfo
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- WO2011045941A1 WO2011045941A1 PCT/JP2010/006132 JP2010006132W WO2011045941A1 WO 2011045941 A1 WO2011045941 A1 WO 2011045941A1 JP 2010006132 W JP2010006132 W JP 2010006132W WO 2011045941 A1 WO2011045941 A1 WO 2011045941A1
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- 0 *c1c(*)nc(*)[n]1* Chemical compound *c1c(*)nc(*)[n]1* 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
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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
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
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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
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
Definitions
- the present invention relates to an epoxy cured resin forming composition, and more particularly to an epoxy cured resin forming composition using an inclusion compound composed of a carboxylic acid derivative and an imidazole compound as a curing catalyst.
- Epoxy resins are widely used in various fields because they have excellent mechanical and thermal properties.
- a curing agent for curing such an epoxy resin imidazole is used.
- the epoxy resin-imidazole mixed solution has a problem that the onset of curing is early and the stability of one solution is extremely poor.
- an imidazolic acid addition salt obtained by adding hydroxybenzoic acid to imidazole see Patent Document 1 or a tetrakisphenol compound (for example, 1,1,2,2, -tetrakis (4- It has been proposed to use an inclusion body of hydroxyphenyl) ethane (hereinafter referred to as TEP)) and imidazole (see Patent Document 2).
- TEP hydroxyphenyl
- Patent Document 3 an inclusion body of an isophthalic acid compound and an imidazole compound, but in a field where higher hardness is required, the hardness is still insufficient.
- An object of the present invention is to provide an epoxy curable resin composition capable of effectively curing a resin by suppressing a curing reaction at low temperature and improving one-component stability and performing heat treatment. It is to provide.
- the present inventors considered that it is necessary to increase the glass transition point (Tg) of the epoxy resin in order to improve the hardness of the resin.
- Tg glass transition point
- the present invention includes (1) a composition for forming an epoxy cured resin, comprising the following component (A), component (B) and component (C): (A) Epoxy resin (B) Formula (I) R (COOH) n (I) [Wherein, R represents an aliphatic hydrocarbon group which may have a substituent, an alicyclic hydrocarbon group which may have a substituent, and an aromatic carbon which may have a substituent. A hydrogen group or a heterocyclic group which may have a substituent is represented, and n represents an integer of 1 to 4.
- R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an arylalkyl group or a cyanoethyl group
- R 2 to R 4 each independently represent a hydrogen atom, a hydroxy group, a nitro group, a halogen atom, C1-C20 alkyl group, aryl group, arylalkyl group or C1-C20 acyl group which may have an atom or a hydroxy group is represented.
- X represents (CH 2 ) n1 or a p-phenylene group
- n1 represents an integer of 0 to 3
- R 5 to R 12 represent a hydrogen atom or a C1 to C6 alkyl group, respectively
- a tetrakisphenol compound represented by (2) The carboxylic acid derivative in component (B) is represented by formula (I-1) or (I-2)
- R 13 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group, a hydroxy group, or a group represented by the following formula:
- R 14 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group or a hydroxy group
- Y represents CH or N atom
- m1 represents an integer of 0 to 2
- m2 represents an integer of 0 to 4
- n2 represents an integer of 1 to 4
- n3 represents an integer of 1 to 4 .
- the carboxylic acid derivative in component (B) is represented by the formula (I-3)
- R 15 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group or a hydroxy group.
- the epoxy cured resin forming composition according to any one of (6) The imidazole compound represented by the formula (II) in the component (B) is 2-ethyl-4-methylimidazole, 2-methylimidazole, 1-benzyl-2-methylimidazole, 2-heptadecylimidazole, Any of (1) to (5) above, which is 2-undecylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole, or 2-phenyl-4,5-dihydroxymethylimidazole Any of (1) to (6) above, wherein the epoxy cured resin-forming composition according to (8) and (7) (B) inclusion compound are epoxy resin curing catalysts. It relates to a composition for forming an epoxy cured resin.
- the present invention also provides: (8)
- the present invention relates to a cured epoxy resin obtained by curing the epoxy cured resin forming composition as described in any one of (1) to (7) above.
- FIG. The figure which shows the thermal analysis (DSC) chart by the temperature change of the composition of Example 1.
- FIG. The figure which shows the thermal analysis (DSC) chart by the temperature change of the composition of the comparative example 1.
- FIG. The figure which shows the thermal analysis (DSC) chart by the temperature change of the composition of the comparative example 2.
- inclusion compound The inclusion compound of the present invention is not particularly limited as long as it is an inclusion compound containing at least a carboxylic acid derivative represented by the formula (I) and an imidazole compound represented by the formula (II).
- a third component such as a solvent may be included.
- an inclusion compound refers to a compound in which two or more molecules are bonded by a bond other than a covalent bond, and more preferably, two or more molecules are bonded by a bond other than a covalent bond.
- a crystalline compound A crystalline compound.
- the clathrate compound of the present invention comprising an isophthalic acid compound represented by the formula (I) and an imidazole compound represented by the formula (II) comprises an isophthalic acid compound represented by the formula (I) and a formula (II It can also be said to be a salt formed from an imidazole compound represented by
- the inclusion ratio (molar ratio) between the carboxylic acid derivative represented by the formula (I) and the imidazole compound represented by the formula (II) varies depending on the combination of the carboxylic acid derivative and the imidazole compound, but is usually 1: 0. It is in the range of 1-5.
- the clathrate compound of the present invention may be in a liquid form dissolved in a solvent, but is preferably in a powder form (deposited in the solvent). By being in a powder form, it can be used for, for example, a powder coating.
- R (COOH) n
- R The carboxylic acid derivative represented by However, R is exemplified by a monovalent group name in which one carboxyl group is bonded. In the case of a polyvalent carboxylic acid, those obtained by appropriately replacing R can be exemplified.
- R represents an aliphatic hydrocarbon group which may have a substituent, an alicyclic hydrocarbon group which may have a substituent, and an aromatic hydrocarbon group which may have a substituent. Or a heterocyclic group which may have a substituent, and n represents an integer of 1 to 4.
- the “aliphatic hydrocarbon group” includes an alkyl group, an alkenyl group, and an alkynyl group.
- alkyl group examples include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, s-butyl group, i-butyl group, t-butyl group, n-pentyl group, n- Examples include hexyl, nonyl, isononyl, decyl, lauryl, tridecyl, myristyl, pentadecyl, palmityl, heptadecyl, stearyl and the like.
- alkenyl group examples include vinyl group, 1-propenyl group, 2-propenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 1-methyl-2-propenyl group, 2-methyl-2- Propenyl group, 1-pentenyl group, 2-pentenyl group, 3-pentenyl group, 4-pentenyl group, 1-methyl-2-butenyl group, 2-methyl-2-butenyl group, 1-hexenyl group, 2-hexenyl group 3-hexenyl group, 4-hexenyl group, 5-hexenyl group, heptenyl group, octenyl group, decenyl group, pentadecenyl group, eicocenyl group, tricocenyl group and the like.
- a C2-C6 alkenyl group is preferred.
- alkynyl group examples include ethynyl group, 1-propynyl group, 2-propynyl group, 1-butynyl group, 2-butynyl group, 3-butynyl group, 1-methyl-2-propynyl group, 2-methyl-2- Propynyl group, 1-pentynyl group, 2-pentynyl group, 3-pentynyl group, 4-pentynyl group, 1-methyl-2-butynyl group, 2-methyl-2-butynyl group, 1-hexynyl group, 2-hexynyl group , 3-hexynyl group, 4-hexynyl group, 5-hexynyl group, 1-heptynyl group, 1-octynyl group, 1-decynyl group, 1-pentadecynyl group, 1-eicosinyl group, 1-tricosynyl
- the “alicyclic hydrocarbon group” is a monocyclic or polycyclic alkyl group such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclododecyl group, Bicyclooctyl group, bicycloheptyl group, norbornyl group, adamantyl group and the like can be mentioned.
- it is a C3-C8 cycloalkyl group.
- “Aromatic hydrocarbon group” means a monocyclic or polycyclic aryl group.
- a partially saturated group is included in addition to the fully unsaturated group. Examples thereof include a phenyl group, a naphthyl group, an azulenyl group, an indenyl group, an indanyl group, and a tetralinyl group.
- a C6-C10 aryl group is preferable.
- Heterocyclic group means a 5- to 7-membered aromatic heterocyclic ring, saturated heterocyclic ring, unsaturated heterocyclic ring, or heterocyclic ring having 1 to 4 nitrogen atoms, oxygen atoms, or sulfur atoms as heteroatoms and benzene.
- a condensed heterocyclic ring condensed with a ring such as a furan-2-yl group, a furan-3-yl group, a thiophen-2-yl group, a thiophen-3-yl group, a pyrrol-1-yl group, Pyrrol-2-yl group, pyridin-2-yl group, pyridin-3-yl group, pyridin-4-yl group, pyrazin-2-yl group, pyrazin-3-yl group, pyrimidin-2-yl group Pyrimidin-4-yl group, pyridazin-3-yl group, pyridazin-4-yl group, 1,3-benzodioxol-4-yl group, 1,3-benzodioxol-5-yl group, 1,4-benzodioxan-5-yl group, 1,4-ben Dioxane-6-yl group, 3,4-dihydro-2H
- n4 represents an integer of 1 or 2
- * represents a bonding position
- the carboxylic acid derivative include the following compounds.
- the aliphatic carboxylic acid is preferably an aliphatic divalent to tetravalent carboxylic acid, and is preferably a hydroxyaliphatic polyvalent carboxylic acid.
- Typical examples include fumaric acid, 1,3-cyclohexanedicarboxylic acid, trans-1,4-cyclohexanedicarboxylic acid, succinic acid, malonic acid, tartaric acid, maleic acid, citric acid, malic acid, adipic acid and the like. it can.
- These aliphatic carboxylic acids may be used alone or in combination of two or more.
- aromatic carboxylic acid examples include the following compounds. Benzoic acid, 2-methylbenzoic acid, 3-methylbenzoic acid, 4-methylbenzoic acid, 2-ethylbenzoic acid, 3-ethylbenzoic acid, 4-ethylbenzoic acid, 2-n-propylbenzoic acid, 3-n -Propylbenzoic acid, 4-n-propylbenzoic acid, 2-butylbenzoic acid, 3-butylbenzoic acid, 4-butylbenzoic acid, 2-isopropylbenzoic acid, 3-isopropylbenzoic acid, 4-isopropylbenzoic acid, 2 -Isobutylbenzoic acid, 3-isobutylbenzoic acid, 4-isobutylbenzoic acid, 2-hydroxybenzoic acid, 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, 2-nitrobenzoic acid, 3-nitrobenzoic acid, 4-nitro Benzoic acid, methyl 2-nitrobenzoate, methyl 3-(
- heterocyclic carboxylic acid examples include furan carboxylic acid, thiophene carboxylic acid, pyrrole carboxylic acid, pyrazine carboxylic acid, nicotinic acid, isonicotinic acid, picolinic acid and the like. These heterocyclic carboxylic acid compounds may be used alone or in combination of two or more.
- aromatic (heterocyclic) carboxylic acids represented by the following formula (I-1) or (I-2) are preferable.
- R 13 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group, a hydroxy group, or a group represented by the following formula:
- R 14 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group or a hydroxy group
- Y represents CH or N atom
- m1 represents an integer of 0 to 2
- m2 represents an integer of 0 to 4
- n2 represents an integer of 1 to 4
- n3 represents an integer of 1 to 4 .
- the C1-C6 alkyl group is preferably a C1-C4 alkyl group, and may have a substituent.
- Specific examples of the C1-C6 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a cyclopropyl group, a butyl group, an isobutyl group, an s-butyl group, a t-butyl group, a cyclobutyl group, and a cyclopropyl group.
- the C1-C6 alkoxy group is preferably a C1-C4 alkoxy group and may have a substituent.
- Specific examples of the C1-C6 alkoxy group include methoxy group, ethoxy group, propoxy group, isopropoxy group, butoxy group, isobutoxy group, s-butoxy group, t-butoxy group, pentoxy group, isopentoxy group, 2- Methylbutoxy group, 1-ethylpropoxy group, 2-ethylpropoxy group, neopentoxy group, hexyloxy group, 4-methylpentoxy group, 3-methylpentoxy group, 2-methylpentoxy group, 3,3-dimethylbutoxy Groups, 2,2-dimethylbutoxy group, 1,1-dimethylbutoxy group, 1,2-dimethylbutoxy group, 1,3-dimethylbutoxy group, 2,3-dimethylbutoxy group and the like.
- the isophthalic acid compound represented by these is preferable.
- R 15 represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a nitro group or a hydroxy group.
- Examples of the C1-C6 alkyl group and the C1-C6 alkoxy group include the same groups as those exemplified for R 13 and R 14 in formulas (I-1) and (I-2).
- the isophthalic acid compound represented by (I-3) is preferably 5-hydroxyisophthalic acid or 5-nitroisophthalic acid.
- R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an arylalkyl group or a cyanoethyl group, and is preferably a hydrogen atom.
- the C1-C10 alkyl group is preferably a C1-C6 alkyl group, and may have a substituent.
- Specific examples of the C1-C10 alkyl group include a heptyl group, an octyl group, a nonyl group, a decyl group and the like in addition to the above-described alkyl group.
- An aryl group means a monocyclic or polycyclic aryl group.
- a partially saturated group is included in addition to the fully unsaturated group. Examples thereof include a phenyl group, a naphthyl group, an azulenyl group, an indenyl group, an indanyl group, and a tetralinyl group.
- a C6-C10 aryl group is preferable.
- the arylalkyl group means a group in which the aryl group is bonded to the C1-C10 alkyl group.
- Examples include a benzyl group, a phenethyl group, a 3-phenyl-n-propyl group, a 4-phenyl-n-butyl group, a 5-phenyl-n-pentyl group, an 8-phenyl-n-octyl group, and a naphthylmethyl group. It is done.
- it is a C6-C10 aryl C1-C6 alkyl group.
- R 2 to R 4 each independently represent a hydrogen atom, a hydroxy group, a nitro group, a halogen atom, a C1-C20 alkyl group, an aryl group, an arylalkyl group or a C1-C20 which may have a hydroxy group.
- the C1-C20 alkyl group, aryl group, and arylalkyl group are as described above.
- the C1-C20 acyl group is preferably a C1-C10 acyl group, more preferably a C1-C6 acyl group, specifically, a formyl group, an acetyl group, a propionyl group, a butyryl group, A valeryl group, a benzoyl group, etc. can be mentioned.
- examples of the imidazole compound represented by the formula (II) include 2-ethyl-4-methylimidazole, 2-methylimidazole, 1-benzyl-2-methylimidazole, 2-heptadecylimidazole, 2-undecyl.
- Imidazole 2-phenyl-4-methyl-5-hydroxymethylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 1-benzyl-2-phenylimidazole, 1,2-dimethylimidazole, 1-cyanoethyl- 2-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-undecylimidazole, 1-cyanoethyl-2-phenylimidazole, 2-phenyl-4,5-dihydroxymethylimidazole, etc.
- 2-ethyl-4-methylimidazole 2-methylimidazole, 1-benzyl-2-methylimidazole, 2-heptadecylimidazole, 2-undecylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole, 2-Phenyl-4,5-dihydroxymethylimidazole is preferred.
- the clathrate compound of the present invention as described above can be produced, for example, by the method described in Japanese Patent Application Laid-Open No. 2007-39449, and the outline thereof is described below. Obtained by adding the carboxylic acid derivative represented by the formula (I) and the imidazole compound represented by the formula (II) to the solvent, followed by heat treatment or heat reflux treatment with stirring as necessary, and precipitation. be able to.
- the solvent is not particularly limited as long as it does not prevent obtaining the compound of the present invention, and water, methanol, ethanol, ethyl acetate, methyl acetate, diethyl ether, dimethyl ether, acetone, methyl ethyl ketone, acetonitrile and the like can be used.
- the carboxylic acid derivative represented by the formula (I) As the addition ratio of the carboxylic acid derivative represented by the formula (I) and the imidazole compound represented by the formula (II) at the time of production of the clathrate compound of the present invention, the carboxylic acid derivative represented by the formula (I) (
- the amount of the imidazole compound (guest) represented by the formula (II) is preferably 0.1 to 5.0 mol, more preferably 0.5 to 3.0 mol with respect to 1 mol of the host). preferable.
- the heating conditions for producing the clathrate compound of the present invention are as follows: at least the carboxylic acid derivative represented by the formula (I) and the imidazole compound represented by the formula (II) are dissolved in a solvent and heated. Although it is not particularly limited as long as the compound of the present invention can be obtained, for example, it can be heated within the range of 40 to 120 ° C., more preferably within the range of 50 to 90 ° C.
- X represents (CH 2 ) n1 or a phenylene group, n1 is 0, 1, 2, or 3, and R 5 to R 12 may be the same or different from each other, Hydrogen atom; C1-C6 alkyl group such as methyl group, propyl group, isopropyl group, n-butyl group, isobutyl group, t-butyl group, n-hexyl group, cyclohexyl group; halogen atom, C1-C6 alkyl group, etc.
- a phenyl group which may be substituted with a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom or an iodine atom; or a C1-C6 alkoxy group such as a methoxy group, an ethoxy group or a t-butoxy group.
- a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom or an iodine atom
- a C1-C6 alkoxy group such as a methoxy group, an ethoxy group or a t-butoxy group.
- the tetrakisphenol compound used in the present invention is not particularly limited as long as it is a compound represented by the general formula (III).
- 1,1,2,2-tetrakis (4-hydroxyphenyl) is used.
- the ratio of the component (B) in the composition for forming an epoxy cured resin of the present invention is 0.01 as the imidazole compound represented by the formula (II) in the component (B) with respect to 1 mol of the epoxy ring of the epoxy resin. It is preferable to contain ⁇ 3 mol, more preferably 0.01 to 1 mol.
- the tetrakisphenol-based compound is usually 0.001 mol% to 100 mol%, preferably 0.01 mol% to 50 mol%, more preferably 1 mol%, relative to the carboxylic acid derivative in the component (B). ⁇ 20 mol%.
- epoxy resin As the epoxy resin, various conventionally known polyepoxy compounds can be used. For example, bis (4-hydroxyphenyl) propane diglycidyl ether, bis (4-hydroxy-3,5-dibromophenyl) propane diglycidyl ether, bis ( 4-hydroxyphenyl) ethane diglycidyl ether, bis (4-hydroxyphenyl) methane diglycidyl ether, resorcinol diglycidyl ether, phloroglicinol triglycidyl ether, trihydroxybiphenyl triglycidyl ether, tetraglycidyl benzophenone, bisresorcinol tetraglycidyl ether Tetramethylbisphenol A diglycidyl ether, bisphenol C diglycidyl ether, bisphenol hexafluoropropane diglycidyl Ether, 1,3-bis [1- (2,3-epoxypropoxy) -1-trifluor
- the composition for forming an epoxy cured resin of the present invention can be produced by mixing an epoxy resin, an inclusion compound, and a tetrakisphenol compound, but usually 60 to 100 so that a sufficient mixed state is formed. Heat to about °C and mix. In the production of an epoxy cured resin, the stability of one liquid at this temperature is important.
- the composition for forming an epoxy cured resin of the present invention includes a curing agent, a curing accelerator, a plasticizer, an organic solvent, a reactive diluent, an extender, a filler, a reinforcing agent, a pigment, and a flame retardant, as necessary.
- Various additives such as an agent, a thickener and a release agent can be blended.
- an arbitrary one can be selected from those conventionally used as curing agents or curing accelerators for conventional epoxy resins.
- amine compounds such as aliphatic amines, alicyclic and heterocyclic amines, aromatic amines, modified amines, imidazole compounds, imidazoline compounds, amide compounds, ester compounds, phenol compounds , Alcohol compounds, thiol compounds, ether compounds, thioether compounds, urea compounds, thiourea compounds, Lewis acid compounds, phosphorus compounds, acid anhydride compounds, onium salt compounds, active silicon compounds- An aluminum complex etc. are mentioned.
- curing agent and the curing accelerator include the following compounds.
- aliphatic amines include ethylenediamine, trimethylenediamine, triethylenediamine, tetramethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, dipropylenediamine, dimethylaminopropylamine, diethylaminopropylamine, Trimethylhexamethylenediamine, pentanediamine, bis (2-dimethylaminoethyl) ether, pentamethyldiethylenetriamine, alkyl-t-monoamine, 1,4-diazabicyclo (2,2,2) octane (triethylenediamine), N, N, N ′, N′-tetramethylhexamethylenediamine, N, N, N ′, N′-tetramethylpropylenediamine, N, N, N ′, N′-tetramethylethylenedi
- alicyclic and heterocyclic amines examples include piperidine, piperazine, menthanediamine, isophoronediamine, methylmorpholine, ethylmorpholine, N, N ′, N ′′ -tris (dimethylaminopropyl) hexahydro-s-triazine, 3,9-bis (3-aminopropyl) -2,4,8,10-tetraoxyspiro (5,5) undecane adduct, N-aminoethylpiperazine, trimethylaminoethylpiperazine, bis (4-aminocyclohexyl) methane N, N′-dimethylpiperazine, 1,8-diazabicyclo (4.5.0) undecene-7, and the like.
- aromatic amines examples include o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, diaminodiphenylmethane, diaminodiphenylsulfone, benzylmethylamine, dimethylbenzylamine, m-xylenediamine, pyridine, picoline, ⁇ - And methylbenzylmethylamine.
- modified amines examples include epoxy compound-added polyamine, Michael addition polyamine, Mannich addition polyamine, thiourea addition polyamine, ketone-capped polyamine, dicyandiamide, guanidine, organic acid hydrazide, diaminomaleonitrile, amineimide, boron trifluoride-piperidine. Complex, boron trifluoride-monoethylamine complex, and the like.
- imidazole compounds include imidazole, 1-methylimidazole, 2-methylimidazole, 3-methylimidazole, 4-methylimidazole, 5-methylimidazole, 1-ethylimidazole, 2-ethylimidazole, 3-ethylimidazole, 4-ethylimidazole, 5-ethylimidazole, 1-n-propylimidazole, 2-n-propylimidazole, 1-isopropylimidazole, 2-isopropylimidazole, 2-isopropylimidazole, 1-n-butylimidazole, 2-n-butylimidazole, 1- Isobutylimidazole, 2-isobutylimidazole, 2-undecyl-1H-imidazole, 2-heptadecyl-1H-imidazole, 1,2-dimethylimidazole, 1,3-dimethylimidazole, 2,4 Dimethylimidazo
- imidazoline compound examples include 2-methylimidazoline and 2-phenylimidazoline.
- Examples of the amide compound include polyamide obtained by condensation of dimer acid and polyamine.
- ester compounds include active carbonyl compounds such as aryl and thioaryl esters of carboxylic acids.
- phenol compounds, alcohol compounds, thiol compounds, ether compounds, and thioether compounds include phenol resin curing agents, aralkyl type phenol resins such as phenol aralkyl resins and naphthol aralkyl resins, and phenol novolac resins.
- aralkyl type phenol resins such as phenol aralkyl resins and naphthol aralkyl resins
- phenol novolac resins such as cresol novolac resin
- these modified resins for example, epoxidized or butylated novolac type phenol resin, dicyclopentadiene modified phenol resin, paraxylene modified phenol resin, triphenol alkane type phenol resin, Examples thereof include functional phenol resins.
- polyol-2-polymercaptan polysulfide
- 2- dimethylaminomethylphenol
- 2,4,6-tris dimethylaminomethyl
- 2,4,6-tris dimethylaminomethyl
- phenol tri-2- And ethyl hexyl hydrochloride 2- (dimethylaminomethylphenol), 2,4,6-tris (dimethylaminomethyl) phenol, 2,4,6-tris (dimethylaminomethyl) phenol tri-2- And ethyl hexyl hydrochloride.
- urea compounds, thiourea compounds, and Lewis acid compounds examples include butylated urea, butylated melamine, butylated thiourea, boron trifluoride, and the like.
- Examples of the phosphorus compound include organic phosphine compounds, for example, alkylphosphine such as ethylphosphine and butylphosphine, first phosphine such as phenylphosphine, dialkylphosphine such as dimethylphosphine and dipropylphosphine, diphenylphosphine, 2 phosphine; tertiary phosphine such as trimethylphosphine, triethylphosphine, triphenylphosphine, and the like.
- alkylphosphine such as ethylphosphine and butylphosphine
- first phosphine such as phenylphosphine
- dialkylphosphine such as dimethylphosphine and dipropylphosphine
- diphenylphosphine diphenylphosphine
- 2 phosphine 2 phosphine
- Examples of the acid anhydride compound include phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride, methylendomethylenetetrahydrophthalic anhydride.
- Acid maleic anhydride, tetramethylene maleic anhydride, trimellitic anhydride, chlorendic anhydride, pyromellitic anhydride, dodecenyl succinic anhydride, benzophenone tetracarboxylic anhydride, ethylene glycol bis (anhydro trimellitate), glycerol tris (Anhydro trimellitate), methylcyclohexene tetracarboxylic acid anhydride, polyazeline acid anhydride and the like.
- Examples of the onium salt compound and the active silicon compound-aluminum complex include aryldiazonium salts, diaryliodonium salts, triarylsulfonium salts, triphenylsilanol-aluminum complexes, triphenylmethoxysilane-aluminum complexes, silyl peroxides- Examples thereof include aluminum complexes and triphenylsilanol-tris (salicylide) aluminum complexes.
- additives include vinyltrimethoxysilane, vinyltriethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ -methacryloxy Propyltriethoxysilane, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, N- ⁇ (aminoethyl) ⁇ -aminopropyltrimethoxysilane, N- ⁇ (aminoethyl) ⁇ -aminopropyltriethoxysilane Silane coupling agents such as N-phenyl- ⁇ -aminopropyltrimethoxysilane, N-phenyl- ⁇ -aminopropyltriethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇
- Engineering plastics such as polyacetal, polyethersulfone, polyetherimide, polybutylene terephthalate, polyetheretherketone, polycarbonate, polysulfone; plasticizer; n-butyl glycidyl ether, phenyl glycidyl ether, styrene oxide, t-butylphenyl glycidyl Diluents such as ether, dicyclopentadiene diepoxide, phenol, cresol, t-butylphenol; extenders; reinforcing agents; colorants; thickeners; higher fatty acids And higher fatty acid esters, higher fatty acid calcium and the like, for example, mold release agents such as carnauba wax and polyethylene wax.
- the blending amount of these additives is not particularly limited, and the blending amount can be appropriately determined within the limit that the effects of the present invention can be obtained.
- the epoxy resin composition of the present invention may contain other resins in addition to the epoxy resin.
- other resins include polyester resins, acrylic resins, silicon resins, polyurethane resins, and episulfide resins.
- the epoxy resin composition of the present invention is used for curing an epoxy resin, for example, an epoxy resin adhesive, an adhesive sheet, a semiconductor encapsulant, a liquid crystal encapsulant, a laminate for a printed wiring board, a varnish, and a powder paint. It can be suitably used for applications such as casting materials and inks.
- Example 1 5 g of epoxy resin (Epototo YD-128, epoxy equivalent 184-194 g / eq, manufactured by Toto Kasei Co., Ltd.) and 0.31202 g of the NIPA-2P4MHZ clathrate crystal obtained in Reference Example 1, and 1,1,2,2- Tetrakis (4-hydroxyphenyl) ethane (TEP) (0.451 g) was mixed and the temperature was raised to 175 ° C. using a differential scanning calorimeter (DSC) (manufactured by TA Instruments). The composition was allowed to cure for 60 minutes. Thereafter, the temperature was returned to 30 ° C., the temperature was raised again, and the glass transition point of the cured product was measured. The thermal analysis (DSC) chart by the temperature change of this resin composition was shown in FIG. The glass transition point of the resin composition was 160.57 ° C.
- DSC differential scanning calorimeter
- Example 2 5 g of epoxy resin (Epototo YD-128, epoxy equivalent 184-194 g / eq, manufactured by Toto Kasei Co., Ltd.) and 0.39373 g of HIPA-2P4MHZ clathrate crystal obtained in Reference Example 2 were further added to 1,1,2,2- Tetrakis (4-hydroxyphenyl) ethane (TEP) (0.451 g) was mixed, and the glass transition point was measured in the same manner as in Example 1.
- the thermal analysis (DSC) chart by the temperature change of this resin composition was shown in FIG.
- the glass transition point of the resin composition was 151.41 ° C.
- Example 5 Epoxy resin (Epototo YD-128, Toto Kasei Co., Ltd., epoxy equivalent 184-194 g / eq) 5 g and 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane (TEP) 0.22550 g were mixed. 1 was subjected to thermal analysis (DSC) by temperature change using a differential scanning calorimeter (DSC) (manufactured by TA Instruments Inc.). The chart is shown in FIG. FIG. 5 shows that the amount of increase in the amount of heat of the resin composition is constant, indicating that there is no change in the state, and that the epoxy resin and TEP have not reacted.
- DSC thermal analysis
- DSC differential scanning calorimeter
- Examples 3 and 4 0.2 g of NIPA-2P4MHZ and HIPA-2P4MHZ obtained in Reference Examples 1 and 2 with respect to 5 g of epoxy resin (Epototo YD-128, epoxy equivalent 184-194 g / eq, manufactured by Toto Kasei Co., Ltd.) 1,1,2,2-Tetrakis (4-hydroxyphenyl) ethane (TEP) was mixed at the blending ratio shown in Table 1. Then, it heated at 110 degreeC using the differential scanning calorimeter (DSC) (made by a TA instrument company), and calculated
- DSC differential scanning calorimeter
- Tg glass transition point
- tetrakisphenol compounds are known to be used as a curing agent or a curing accelerator by forming an inclusion body with an imidazole compound, or as a curing accelerator itself (for example, JP-A-2006-299281), as in the present invention, is known to increase the Tg of a cured product of an epoxy resin by adding to a clathrate compound used as a curing agent or a curing accelerator. There wasn't.
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Abstract
Description
本願は、2009年10月16日に出願された日本国特許出願第2009-239832号、2010年1月26日に出願された日本国特許出願第2010-014594号に対し優先権を主張し、その内容をここに援用する。
そういう状況下で、出願人は、イソフタル酸系化合物とイミダゾール系化合物との包接体を開発したが、さらに高硬度が要求される分野では、まだ硬度的に不足であった(特許文献3)。
(1)下記(A)成分、(B)成分及び(C)成分を含有することを特徴とするエポキシ硬化樹脂形成用組成物、
(A)エポキシ樹脂
(B)式(I)
R(COOH)n (I)
[式中、Rは、置換基を有していても良い脂肪族炭化水素基、置換基を有していても良い脂環式炭化水素基、置換基を有していても良い芳香族炭化水素基、又は置換基を有していても良い複素環基を表し、nは1~4のいずれかの整数を表す。]で表されるカルボン酸誘導体と、
式(II)
(C)式(III)
(2)(B)成分中のカルボン酸誘導体が、式(I-1)又は(I-2)
(3)(B)成分中のカルボン酸誘導体が、式(I-3)
(4)式(I-3)で表されるイソフタル酸化合物が、5-ヒドロキシイソフタル酸又は5-ニトロイソフタル酸であることを特徴とする上記(3)に記載のエポキシ硬化樹脂形成用組成物、
(5)エポキシ環1モルに対して、(B)成分中の式(II)で表されるイミダゾール化合物を0.01~1.0モル含有することを特徴とする上記(1)~(4)のいずれかに記載のエポキシ硬化樹脂形成用組成物、
(6)(B)成分中の式(II)で表されるイミダゾール化合物が、2-エチル-4-メチルイミダゾール、2-メチルイミダゾール、1-ベンジル-2-メチルイミダゾール、2-ヘプタデシルイミダゾール、2-ウンデシルイミダゾール、2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール、又は、2-フェニル-4,5-ジヒドロキシメチルイミダゾールであることを特徴とする上記(1)~(5)のいずれかに記載のエポキシ硬化樹脂形成用組成物、及び
(7)(B)成分の包接化合物がエポキシ樹脂用硬化触媒であることを特徴とする上記(1)~(6)のいずれかに記載のエポキシ硬化樹脂形成用組成物に関する。
(8)上記(1)~(7)のいずれかに記載のエポキシ硬化樹脂形成用組成物を硬化させることにより得られるエポキシ樹脂硬化物に関する。
本発明の包接化合物としては、式(I)で表されるカルボン酸誘導体と、式(II)で表されるイミダゾール化合物とを少なくとも含む包接化合物であれば特に制限されるものではなく、溶媒等の第3成分を含んでもよい。本発明において包接化合物とは、2種又は3種以上の分子が共有結合以外の結合により結合した化合物をいい、より好ましくは、2種又は3種以上の分子が共有結合以外の結合により結合した結晶性化合物をいう。式(I)で表されるイソフタル酸化合物と、式(II)で表されるイミダゾール化合物とを含む本発明の包接化合物は、式(I)で表されるイソフタル酸化合物と、式(II)で表されるイミダゾール化合物とから形成される塩とも言うことができる。
式(I)で表されるカルボン酸誘導体と式(II)で表されるイミダゾール化合物との包接比(モル比)は、カルボン酸誘導体とイミダゾール化合物の組み合わせにより異なるが、通常1:0.1~5の範囲である。
本発明の包接化合物は、溶媒に溶解した液状のものであってもよいが、(溶媒中で析出する)粉体状のものが好ましい。粉体状であることにより、例えば、粉体塗料に使用することができる。
式(I)
R(COOH)n (I)
で表されるカルボン酸誘導体について説明する。ただし、Rはカルボキシル基が一個結合した一価の基名で例示する。多価のカルボン酸の場合は、Rを適宜読み替えたものを例示することができる。
式中Rは、置換基を有していても良い脂肪族炭化水素基、置換基を有していても良い脂環式炭化水素基、置換基を有していても良い芳香族炭化水素基、又は置換基を有していても良い複素環基を表し、nは1~4のいずれかの整数を表す。
「アルキル基」としては、メチル基、エチル基、n-プロピル基、i-プロピル基、n-ブチル基、s-ブチル基、i-ブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基、ノニル基、イソノニル基、デシル基、ラウリル基、トリデシル基、ミリスチル基、ペンタデシル基、パルミチル基、ヘプタデシル基、ステアリル基等が挙げられる。好ましくは、C1~C6のアルキル基である。
「アルケニル基」としては、ビニル基、1-プロペニル基、2-プロペニル基、1-ブテニル基、2-ブテニル基、3-ブテニル基、1-メチル-2-プロペニル基、2-メチル-2-プロペニル基、1-ペンテニル基、2-ペンテニル基、3-ペンテニル基、4-ペンテニル基、1-メチル-2-ブテニル基、2-メチル-2-ブテニル基、1-ヘキセニル基、2-ヘキセニル基、3-ヘキセニル基、4-ヘキセニル基、5-ヘキセニル基、ヘプテニル基、オクテニル基、デセニル基、ぺンタデセニル基、エイコセニル基、トリコセニル基等が挙げられる。好ましくは、C2~C6アルケニル基である。
「アルキニル基」としては、エチニル基、1-プロピニル基、2-プロピニル基、1-ブチニル基、2-ブチニル基、3-ブチニル基、1-メチル-2-プロピニル基、2-メチル-2-プロピニル基、1-ペンチニル基、2-ペンチニル基、3-ペンチニル基、4-ペンチニル基、1-メチル-2-ブチニル基、2-メチル-2-ブチニル基、1-ヘキシニル基、2-ヘキシニル基、3-ヘキシニル基、4-ヘキシニル基、5-ヘキシニル基、1-ヘプチニル基、1-オクチニル基、1-デシニル基、1-ぺンタデシニル基、1-エイコシニル基、1-トリコシニル基等が挙げられる。好ましくは、C2~C6アルキニル基である。
脂肪族カルボン酸としては、好ましくは脂肪族2~4価カルボン酸であり、ヒドロキシ脂肪族多価カルボン酸である。代表的には、フマル酸、1,3-シクロヘキサンジカルボン酸、trans-1,4-シクロヘキサンジカルボン酸、コハク酸、マロン酸、酒石酸、マレイン酸、クエン酸、リンゴ酸、アジピン酸などを挙げることができる。これら脂肪族カルボン酸は1種単独で使用しても2種以上を併用しても良い。
安息香酸、2-メチル安息香酸、3-メチル安息香酸、4-メチル安息香酸、2-エチル安息香酸、3-エチル安息香酸、4-エチル安息香酸、2-n-プロピル安息香酸、3-n-プロピル安息香酸、4-n-プロピル安息香酸、2-ブチル安息香酸、3-ブチル安息香酸、4-ブチル安息香酸、2-イソプロピル安息香酸、3-イソプロピル安息香酸、4-イソプロピル安息香酸、2-イソブチル安息香酸、3-イソブチル安息香酸、4-イソブチル安息香酸、2-ヒドロキシ安息香酸、3-ヒドロキシ安息香酸、4-ヒドロキシ安息香酸、2-ニトロ安息香酸、3-ニトロ安息香酸、4-ニトロ安息香酸、2-ニトロ安息香酸メチル、3-ニトロ安息香酸メチル、4-ニトロ安息香酸メチル、2-ニトロ安息香酸エチル、3-ニトロ安息香酸エチル、4-ニトロ安息香酸エチル、2-ニトロ安息香酸プロピル、3-ニトロ安息香酸プロピル、4-ニトロ安息香酸プロピル、2-ニトロ安息香酸ブチル、3-ニトロ安息香酸ブチル、4-ニトロ安息香酸ブチル、2,3-ジメチル安息香酸、2,4-ジメチル安息香酸、2,5-ジメチル安息香酸、2,6-ジメチル安息香酸、3,4-ジメチル安息香酸、3,5-ジメチル安息香酸、3,6-ジメチル安息香酸、4,5-ジメチル安息香酸、4,6-ジメチル安息香酸、2,3-ジエチル安息香酸、2,4-ジエチル安息香酸、2,5-ジエチル安息香酸、2,6-ジエチル安息香酸、3,4-ジエチル安息香酸、3,5-ジエチル安息香酸、3,6-ジエチル安息香酸、4,5-ジエチル安息香酸、4,6-ジエチル安息香酸、2,3-ジヒドロキシ安息香酸、2,4-ジヒドロキシ安息香酸、2,5-ジヒドロキシ安息香酸、2,6-ジヒドロキシ安息香酸、3,4-ジヒドロキシ安息香酸、3,5-ジヒドロキシ安息香酸、3,6-ジヒドロキシ安息香酸、4,5-ジヒドロキシ安息香酸、4,6-ジヒドロキシ安息香酸;
これらの芳香族カルボン酸化合物は1種単独で用いても2種以上を併用してもよい。
式(I-1)又は(I-2)
R13はC1~C6アルキル基、C1~C6アルコキシ基、ニトロ基、ヒドロキシ基又は次式
式中、R15は、C1~C6のアルキル基、C1~C6のアルコキシ基、ニトロ基又はヒドロキシ基を表す。
C1~C6のアルキル基及びC1~C6のアルコキシ基としては、式(I-1)及び(I-2)におけるR13,R14において例示されたものと同じものが挙げられる。
具体的に、(I-3)で表されるイソフタル酸化合物としては、5-ヒドロキシイソフタル酸又は5-ニトロイソフタル酸が好ましい。
次に、式(II)で表されるイミダゾール化合物について説明する。
式中、R1は、水素原子、C1~C10のアルキル基、アリール基、アリールアルキル基又はシアノエチル基を表し、水素原子であることが好ましい。
C1~C20のアルキル基、アリール基、アリールアルキル基については上述の通りである。
C1~C20のアシル基としては、C1~C10のアシル基であることが好ましく、C1~C6のアシル基であることがより好ましく、具体的に、ホルミル基、アセチル基、プロピオニル基、ブチリル基、バレリル基、ベンゾイル基等を挙げることができる。
以上のような本発明の包接化合物は、たとえば、特開2007-39449号公報に記載の方法により製造することができるが、以下に、その概要を記載する。
式(I)で表されるカルボン酸誘導体及び式(II)で表されるイミダゾール化合物を溶媒に添加後、必要に応じて攪拌しながら、加熱処理又は加熱還流処理を行い、析出させることにより得ることができる。
溶媒としては、本発明の化合物を得ることを妨げない限り特に制限はなく、水、メタノール、エタノール、酢酸エチル、酢酸メチル、ジエチルエーテル、ジメチルエーテル、アセトン、メチルエチルケトン、アセトニトリル等を用いることができる。本発明の包接化合物の製造時における式(I)で表されるカルボン酸誘導体及び式(II)で表されるイミダゾール化合物の添加割合としては、式(I)で表されるカルボン酸誘導体(ホスト)1モルに対して、式(II)で表されるイミダゾール化合物(ゲスト)が、0.1~5.0モルであることが好ましく、0.5~3.0モルであることがより好ましい。
式(III)中、Xは、(CH2)n1又はフェニレン基を表し、n1は、0、1、2又は3であり、R5~R12は、互いに同一又は相異なっていてもよく、水素原子;メチル基、プロピル基、イソプロピル基、n-ブチル基、イソブチル基、t-ブチル基、n-ヘキシル基、シクロヘキシル基等のC1~C6のアルキル基;ハロゲン原子、C1~C6アルキル基等で置換されていてもよいフェニル基;フッ素原子、塩素原子、臭素原子、沃素原子等のハロゲン原子;又は、メトキシ基、エトキシ基、t-ブトキシ基等のC1~C6のアルコキシ基である。
本発明のエポキシ硬化樹脂形成用組成物における(B)成分の割合は、エポキシ樹脂のエポキシ環1モルに対して、(B)成分中の式(II)で表されるイミダゾール化合物として0.01~3モル含有することが好ましく、0.01~1モル含有することがより好ましい。また、テトラキスフェノール系化合物は、(B)成分中のカルボン酸誘導体に対し、通常、0.001モル%~100モル%、好ましくは0.01モル%~50モル%、より好ましくは1モル%~20モル%である。
エポキシ樹脂としては、従来公知の各種ポリエポキシ化合物が使用でき、例えば、ビス(4-ヒドロキシフェニル)プロパンジグリシジルエーテル、ビス(4-ヒドロキシ-3,5-ジブロモフェニル)プロパンジグリシジルエーテル、ビス(4-ヒドロキシフェニル)エタンジグリシジルエーテル、ビス(4-ヒドロキシフェニル)メタンジグリシジルエーテル、レゾルシノールジグリシジルエーテル、フロログリシノールトリグリシジルエーテル、トリヒドロキシビフェニルトリグリシジルエーテル、テトラグリシジルベンゾフェノン、ビスレゾルシノールテトラグリシジルエーテル、テトラメチルビスフェノールAジグリシジルエーテル、ビスフェノールCジグリシジルエーテル、ビスフェノールヘキサフルオロプロパンジグリシジルエーテル、1,3-ビス〔1-(2,3-エポキシプロポキシ)-1-トリフルオロメチル-2,2,2-トリフルオロエチル〕ベンゼン、1,4-ビス〔1-(2,3-エポキシプロポキシ)-1-トリフルオロメチル-2,2,2-トリフルオロメチル〕ベンゼン、4,4′-ビス(2,3-エポキシプロポキシ)オクタフルオロビフェニル、フェノールノボラック型ビスエポキシ化合物等の芳香族系グリシジルエーテル化合物、アリサイクリックジエポキシアセタール、アリサイクリックジエポキシアジペート、アリサイクリックジエポキシカルボキシレート、ビニルシクロヘキセンジオキシド等の脂環式ポリエポキシ化合物、ジグリシジルフタレート、ジグリシジルテトラヒドロフタレート、ジグリシジルヘキサヒドロフタレート、ジメチルグリシジルフタレート、ジメチルグリシジルヘキサヒドロフタレート、ジグリシジル-p-オキシベンゾエート、ジグリシジルシクロペンタン-1,3-ジカルボキシレート、ダイマー酸グリシジルエステル等のグリシジルエステル化合物、ジグリシジルアニリン、ジグリシジルトルイジン、トリグリシジルアミノフェノール、テトラグリシジルジアミノジフェニルメタン、ジグリシジルトリブロモアニリン等のグリシジルアミン化合物、ジグリシジルヒダントイン、グリシジルグリシドオキシアルキルヒダントイン、トリグリシジルイソシアヌレート等の複素環式エポキシ化合物等を挙げることができる。
本発明のエポキシ硬化樹脂形成用組成物は、エポキシ樹脂、包接化合物及びテトラキスフェノール系化合物を混合することにより製造することができるが、十分な混合状態が形成されるよう、通常、60~100℃程度に加熱して混合する。エポキシ硬化樹脂の製造においては、このときの温度での一液安定性が重要となる。
本発明のエポキシ硬化樹脂形成用組成物には、必要に応じて、硬化剤、硬化促進剤、可塑剤、有機溶剤、反応性希釈剤、増量剤、充填剤、補強剤、顔料、難燃化剤、増粘剤及び離型剤など種々の添加剤を配合することができる。
脂肪族アミン類としては、例えば、エチレンジアミン、トリメチレンジアミン、トリエチレンジアミン、テトラメチレンジアミン、ヘキサメチレンジアミン、ジエチレントリアミン、トリエチレンテトラミン、テトラエチレンペンタミン、ジプロピレンジアミン、ジメチルアミノプロピルアミン、ジエチルアミノプロピルアミン、トリメチルヘキサメチレンジアミン、ペンタンジアミン、ビス(2-ジメチルアミノエチル)エーテル、ペンタメチルジエチレントリアミン、アルキル-t-モノアミン、1,4-ジアザビシクロ(2,2,2)オクタン(トリエチレンジアミン)、N,N,N’,N’-テトラメチルヘキサメチレンジアミン、N,N,N’,N’-テトラメチルプロピレンジアミン、N,N,N’,N’-テトラメチルエチレンジアミン、N,N-ジメチルシクロヘキシルアミン、ジブチルアミノプロピルアミン、ジメチルアミノエトキシエトキシエタノール、トリエタノールアミン、ジメチルアミノヘキサノール等が挙げられる。
[参考例1]NIPA-2P4MHZ包接体の合成
フラスコに5-ニトロイソフタル酸(NIPA)40.3mmol(8.5g)とメタノール121mlを投入し混合して得た溶液に、攪拌しながら、2P4MHZ80.6mmol(15.16g)を添加し、3時間加熱還流した。その後、室温で一晩放置した後、ろ過・真空乾燥することによって(NIPA:2P4MHZ=1:2)23.26gを得た(収率98.3%)。
フラスコに5-ヒドロキシイソフタル酸(HIPA)109.8mmol(20g)とメタノール250mlを投入し混合して得た溶液に、攪拌しながら、2P4MHZ109.8mmol(20.67g)を15分かけて添加した。室温にて2時間放置後、3時間加熱還流した。その後、室温で一晩放置した後、ろ過・真空乾燥することによって(HIPA:2P4MHZ=1:1)39.56gを得た(収率97.3%)。
1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)142mmol(56.6g)と2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール(2P4MHZ)258mmolに、酢酸エチル460mlを加えて加熱還流を行った。その後、加熱を止めるとすぐに結晶が析出するが、室温で一晩放置した後、ろ過・真空乾燥することによって包接体(TEP:2P4MHZ=1:2)を得た(105.2g,96.2%)。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gと、参考例1で得られたNIPA-2P4MHZ包接結晶0.31202gに、さらに1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)0.451gを混合し、示差走査熱量計(DSC)(ティー・エイ・インスツルメント社製)を用いて175℃まで温度を上昇させ、その温度を60分間維持させて該組成物を硬化させた。その後温度を30℃に戻し、再度温度を上昇させ、硬化物のガラス転移点を測定した。該樹脂組成物の温度変化による熱分析(DSC)チャートを図1に示した。該樹脂組成物のガラス転移点は160.57℃であった。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gと参考例1で得られたNIPA-2P4MHZ包接結晶0.31204gを混合し、実施例1と同様にガラス転移点を測定した。該樹脂組成物の温度変化による熱分析(DSC)チャートを図2に示した。該樹脂組成物のガラス転移点は131.57℃であった。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gと、参考例2で得られたHIPA-2P4MHZ包接結晶0.39373gに、さらに1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)0.451gを混合し、実施例1と同様にガラス転移点を測定した。該樹脂組成物の温度変化による熱分析(DSC)チャートを図3に示した。該樹脂組成物のガラス転移点は151.41℃であった。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gと参考例2で得られたHIPA-2P4MHZ包接結晶0.39372gを混合し、実施例1と同様にガラス転移点を測定した。該樹脂組成物の温度変化による熱分析(DSC)チャートを図4に示した。該樹脂組成物のガラス転移点は97.68℃であった。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gと1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)0.22550gを混合し、実施例1と同じ測定条件で示差走査熱量計(DSC)(ティー・エイ・インスツルメント社製)を用いて温度変化による熱分析(DSC)を行った。そのチャートを図5に示した。図5から、樹脂組成物の熱量の上昇量は一定であるので、状態に変化がないことが示され、エポキシ樹脂とTEPは反応していないことが示された。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gに対して、参考例1、2で得られたNIPA-2P4MHZ及びHIPA-2P4MHZを2P4MHZ換算で0.2g、さらに表1に記載の配合割合で、1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)を混合した。
その後、示差走査熱量計(DSC)(ティー・エイ・インスツルメント社製)を用いて110℃に加熱し、110℃における反応極大時間を求めた。
エポキシ樹脂(エポトートYD-128 東都化成株式会社製 エポキシ当量184-194g/eq)5gに対して、2P4MHZ0.2g(比較例4)又は比較参考例1で得られたTEP-2P4MHZを2P4MHZ換算で0.2g、さらに表1に記載の配合割合で、1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン(TEP)を混合した。
その後、示差走査熱量計(DSC)(ティー・エイ・インスツルメント社製)を用いて110℃に加熱し、110℃における反応極大時間を求めた。
TEP-イミダゾール系包接化合物にTEPを添加した場合は、反応極大時間に変化はなかったが、カルボン酸-イミダゾール系包接化合物にTEPを添加した場合は、TEPの添加により反応極大時間が短くなる傾向が見られた。
これまで、テトラキスフェノール化合物は、イミダゾール系化合物との包接体を形成して硬化剤あるいは硬化促進剤として使用したり、また、それ自身、硬化促進剤として使用することが知られている(たとえば、特開2006-299281号公報)が、本発明のように、硬化剤あるいは硬化促進剤として使用する包接化合物に添加することにより、エポキシ樹脂の硬化物のTgを上昇させることは知られていなかった。
Claims (8)
- 下記(A)成分、(B)成分及び(C)成分を含有することを特徴とするエポキシ硬化樹脂形成用組成物。
(A)エポキシ樹脂、
(B)式(I)
R(COOH)n (I)
[式中、Rは、置換基を有していても良い脂肪族炭化水素基、置換基を有していても良い脂環式炭化水素基、置換基を有していても良い芳香族炭化水素基、又は置換基を有していても良い複素環基を表し、nは1~4のいずれかの整数を表す。]で表されるカルボン酸誘導体と、
式(II)
(C)式(III)
- 式(I-3)で表されるイソフタル酸化合物が、5-ヒドロキシイソフタル酸又は5-ニトロイソフタル酸であることを特徴とする請求項3に記載のエポキシ硬化樹脂形成用組成物。
- エポキシ環1モルに対して、(B)成分中の式(II)で表されるイミダゾール化合物を0.01~1.0モル含有することを特徴とする請求項1~4のいずれかに記載のエポキシ硬化樹脂形成用組成物。
- (B)成分中の式(II)で表されるイミダゾール化合物が、2-エチル-4-メチルイミダゾール、2-メチルイミダゾール、1-ベンジル-2-メチルイミダゾール、2-ヘプタデシルイミダゾール、2-ウンデシルイミダゾール、2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール、又は、2-フェニル-4,5-ジヒドロキシメチルイミダゾールであることを特徴とする請求項1~5のいずれかに記載のエポキシ硬化樹脂形成用組成物。
- (B)成分の包接化合物がエポキシ樹脂用硬化触媒であることを特徴とする請求項1~6のいずれかに記載のエポキシ硬化樹脂形成用組成物。
- 請求項1~7のいずれかに記載のエポキシ硬化樹脂形成用組成物を硬化させることにより得られるエポキシ樹脂硬化物。
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Cited By (6)
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WO2011145317A1 (ja) * | 2010-05-21 | 2011-11-24 | 日本曹達株式会社 | 硬化性粉体塗料組成物及びその硬化物 |
WO2012035755A1 (ja) * | 2010-09-15 | 2012-03-22 | 日本曹達株式会社 | 液状の硬化性エポキシ樹脂組成物及びそれを含有する接着剤 |
JP2014181257A (ja) * | 2013-03-18 | 2014-09-29 | Sekisui Chem Co Ltd | 熱硬化性樹脂組成物、及び、半導体装置の製造方法 |
US9546243B2 (en) | 2013-07-17 | 2017-01-17 | Air Products And Chemicals, Inc. | Amines and polymeric phenols and usage thereof as curing agents in one component epoxy resin compositions |
JPWO2016038827A1 (ja) * | 2014-09-08 | 2017-06-08 | 日本曹達株式会社 | 包接化合物の結晶多形、その製造方法及び硬化性樹脂組成物 |
JP7471870B2 (ja) | 2020-03-09 | 2024-04-22 | キヤノン株式会社 | 接着剤組成物 |
Also Published As
Publication number | Publication date |
---|---|
EP2489689B1 (en) | 2017-05-10 |
EP2489689A4 (en) | 2014-03-12 |
KR101400473B1 (ko) | 2014-05-28 |
ES2634509T3 (es) | 2017-09-28 |
TW201122012A (en) | 2011-07-01 |
CN102574988A (zh) | 2012-07-11 |
TWI491635B (zh) | 2015-07-11 |
EP2489689A1 (en) | 2012-08-22 |
KR20120085257A (ko) | 2012-07-31 |
JP5474995B2 (ja) | 2014-04-16 |
JPWO2011045941A1 (ja) | 2013-03-04 |
CN102574988B (zh) | 2014-05-14 |
US20120196991A1 (en) | 2012-08-02 |
US9068074B2 (en) | 2015-06-30 |
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