WO2009084229A1 - 潜在性硬化剤、それを含むエポキシ樹脂組成物、シール剤および有機elディスプレイ - Google Patents
潜在性硬化剤、それを含むエポキシ樹脂組成物、シール剤および有機elディスプレイ Download PDFInfo
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- WO2009084229A1 WO2009084229A1 PCT/JP2008/004016 JP2008004016W WO2009084229A1 WO 2009084229 A1 WO2009084229 A1 WO 2009084229A1 JP 2008004016 W JP2008004016 W JP 2008004016W WO 2009084229 A1 WO2009084229 A1 WO 2009084229A1
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- Prior art keywords
- group
- amine imide
- imide compound
- epoxy resin
- general formula
- Prior art date
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- 238000000034 method Methods 0.000 claims abstract description 30
- 238000004057 DFT-B3LYP calculation Methods 0.000 claims abstract description 7
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- 125000004018 acid anhydride group Chemical group 0.000 claims description 6
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- 238000000746 purification Methods 0.000 description 15
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- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 5
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- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- NQRYJNQNLNOLGT-UHFFFAOYSA-O Piperidinium(1+) Chemical compound C1CC[NH2+]CC1 NQRYJNQNLNOLGT-UHFFFAOYSA-O 0.000 description 4
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- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C243/00—Compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C243/40—Hydrazines having nitrogen atoms of hydrazine groups being quaternised
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/26—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring
- C07C271/28—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring to a carbon atom of a non-condensed six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/22—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with hetero atoms directly attached to ring nitrogen atoms
- C07D295/28—Nitrogen atoms
- C07D295/32—Nitrogen atoms acylated with carboxylic or carbonic acids, or their nitrogen or sulfur analogues
-
- 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
- C08G59/50—Amines
- C08G59/54—Amino amides>
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
Definitions
- the present invention relates to a latent curing agent, an epoxy resin composition containing the latent curing agent, a sealing agent, and an organic EL display.
- An amine imide compound is known as a compound useful as a raw material for a polymerizable compound such as a polyurethane resin or a polyurea resin, a crosslinking agent, a cleaning agent, a surfactant, a surface treatment agent, an intermediate for medical and agricultural chemicals, and the like.
- the amine imide compound has a feature that a nitrogen-nitrogen (NN) bond in a molecular structure is cut by heating and decomposes to generate an isocyanate compound and a tertiary amine.
- the isocyanate compound produced by the decomposition reacts with an organic compound having a hydroxyl group or an amino group.
- the tertiary amine produced by decomposition has a high basicity and therefore acts as a curing agent such as an epoxy resin. Therefore, the amine imide compound is used as a latent curing agent for epoxy resins, for example.
- a temperature of 130 ° C. or higher is usually required. Therefore, it is difficult to apply an amine imide compound to a latent curing agent for an epoxy resin composition for use in adhesives, paints or electronic / electric materials that need to be cured at a relatively low temperature. Therefore, an amine imide compound that can cure the epoxy resin composition at a lower temperature (higher low temperature curability) is desired.
- an amine imide compound capable of curing an epoxy resin composition at a lower temperature an amine imide compound having an organic group in which a hydroxyl group is bonded to carbon bonded to a carbonyl carbon in a molecular structure (see, for example, Patent Document 1)
- An amine imide compound having one or two hydroxyl groups in the molecular structure is known.
- Patent Document 3 discloses an amine imide compound in which an olefinic double bond group is introduced into the carbonyl carbon of the amine imide group in the molecular structure.
- Patent Document 3 discloses not only an olefinic double bond group but also an amine imide compound having a hydroxyl group, which describes that the hydroxyl group can react with isocyanate.
- the amine imide compound described in Patent Document 3 is a polymerizable compound (monomer) that is polymerized by an anaerobic reaction, and is not used as a curing agent that polymerizes or cures other polymerizable compounds.
- JP 2000-229927 A Japanese Patent Laid-Open No. 2003-096061 US Pat. No. 4,005,055
- the sealant for the display element is required to have a high storage stability at room temperature as well as a property of curing at a low heating temperature (low temperature curability).
- Storage stability refers to the property of a sealing agent that has low reactivity at room temperature and is maintained in a stable state. The higher the room temperature stability, the better the work efficiency when applying the sealing agent on the substrate.
- the amine imide compounds described in Patent Documents 1 and 2 have a highly reactive hydroxyl group in the molecular structure, the epoxy resin composition containing the amine imide compound has low storage stability.
- a latent curing agent that can provide an epoxy resin composition having both low-temperature curability and high storage stability at room temperature is desired.
- this invention aims at providing the latent hardener which can give the epoxy resin composition with high storage stability at room temperature and low temperature curability.
- Another object of the present invention is to provide an epoxy resin composition and a sealing agent that are excellent in storage stability at room temperature and low-temperature curability by including the latent curing agent, and an organic EL display using the sealing agent.
- the present inventors introduce a substituent capable of donating an electron to the NN bond in the molecular structure of the amine imide compound, or introduce a bulky substituent near the NN bond.
- the present inventors have found that the NN bond energy of an amine imide compound can be made relatively low. And when such an amine imide compound was used as a latent hardener, it discovered that an epoxy resin etc. could be hardened
- an epoxy resin composition containing an amine imide compound having a molecular structure not containing a hydroxyl group as a latent curing agent has high storage stability at room temperature.
- a latent curing agent for curing an ion polymerizable compound which includes an amine imide compound having no hydroxyl group, and an NN bond energy of the amine imide compound determined by a B3LYP density functional method is 100 to 210 kJ / Latent curing agent, which is mol.
- R 1 and R 4 each represents an organic group which may be the same or different from each other;
- R 2 and R 3 each independently represent an unsubstituted or substituted alkyl group or Represents an aryl group or is linked to each other to form a ring;
- R 5 represents an organic group. However, all of R 1 to R 5 do not have an active group for the ion polymerizable compound.
- R 2 and R 3 in the general formula (1) are connected to each other to form a divalent saturated hydrocarbon group having 4 to 8 carbon atoms, — (CH 2 ) n O (CH 2 ) n — Or — (CH 2 ) n NR 11 (CH 2 ) n — (wherein n represents a natural number of 2 to 4; R 11 represents any organic group), [3] or [4]
- R 5 in the general formula (1) is an organic group having a carbonyl group
- the second of the present invention relates to an epoxy resin composition and a sealing agent shown below.
- An epoxy resin composition comprising (a) the latent curing agent according to any one of [1] to [7] and (b) an epoxy resin.
- the equivalent ratio represented by acid anhydride group / epoxy group is 0.8 to 1.2, and the molar ratio of amineimide group / epoxy group is 0.008 to 0.00.
- the epoxy resin composition according to [9] which is 152.
- a sealant comprising the epoxy resin composition according to any one of [8] to [10].
- a display substrate on which an organic EL element is disposed a counter substrate that is paired with the display substrate, and the display substrate and the counter substrate interposed between the display substrate and the counter substrate, and sealing the organic EL element.
- An organic EL display comprising a cured product of the sealant.
- R 6 represents an aryl group or an aryloxy group which is unsubstituted or has a substituent other than a hydroxyl group
- R 7 and R 8 each independently represents an unsubstituted or a hydroxyl group other than a hydroxyl group
- Re represents a substituted alkyl group or aryl group, or is linked to each other to form a ring not containing a hydroxyl group
- R 9 represents an organic group other than a hydroxyl group
- R 10 represents an unsubstituted or non-hydroxyl group
- An alkyl group, an aryl group, an aminocarbonyl group, an acyl group or an oxycarbonyl group having a substituent is represented.
- R 6 to R 10 do not have an active group with respect to the epoxy group.
- R 6 in the general formula (2) is an unsubstituted aryl group, an aryl group having an alkyl group, or an aryl group having an alkoxy group.
- R 7 and R 8 in the general formula (2) are connected to each other to form a divalent saturated hydrocarbon group having 4 to 8 carbon atoms, — (CH 2 ) n O (CH 2 ) n -Or-(CH 2 ) n NR 12 (CH 2 ) n- (wherein n represents a natural number of 2 to 4; R 12 represents any organic group), [13] or [14]
- the amine imide compound of description is
- the amine imide compound contained in the latent curing agent of the present invention generates a tertiary amine that easily breaks an NN bond by heating at a low temperature and promotes curing of an epoxy resin or the like. For this reason, the epoxy resin composition containing the latent curing agent has high low-temperature curability. Moreover, since the said amine imide compound does not contain a hydroxyl group in molecular structure, the epoxy resin composition containing the said latent hardening
- ⁇ is used to define a numerical range, but “ ⁇ ” in the present invention includes a boundary value.
- 10 to 100 is 10 or more and 100 or less.
- the latent curing agent of the present invention is a latent curing agent that cures an ion polymerizable compound, and includes an amine imide compound (first amine imide compound) having no hydroxyl group. Further, the NN bond energy of the amine imide compound having no hydroxyl group determined by the B3LYP density functional method is 100 to 210 kJ / mol.
- the amine imide compound contained in the latent curing agent of the present invention is preferably represented by the following general formula (1).
- R 1 and R 4 each represents an organic group which may be the same or different from each other;
- R 2 and R 3 each independently represent an unsubstituted or substituted alkyl group or aryl group Or linked together to form a ring;
- R 5 represents an organic group. However, none of R 1 to R 6 contains a hydroxyl group.
- the NN bond energy of the amine imide compound represents the ease of breaking the NN bond of the amine imide compound. That is, the smaller the NN bond energy, the easier the NN bond is cleaved, so the decomposability of the amine imide compound becomes higher. It can be said that a highly decomposable amine imide compound has a high curing acceleration of the ion polymerizable compound.
- the NN bond energy of an amine imide compound can be obtained by a calculation method such as an ab initio molecular orbital method or a density functional method. It is preferable to obtain by a density functional method in that the calculation is relatively easy and a highly accurate calculation result can be obtained.
- the NN bond energy of the amine imide compound of the present invention can be obtained by calculation by “B3LYP method” known as one of density functional methods. Gaussian 03 Rev.C.02 can be used as a calculation program.
- the basis function may be cc-pVDZ for all elements.
- the NN bond energy obtained by the B3LYP density functional method of the amine imide compound is preferably 100 to 195 kJ / mol; more preferably 100 to 190 kJ / mol; 100 to 170 kJ / mol. More preferably. This is for imparting sufficient low-temperature curability and storage stability to a resin composition containing an amine imide compound as a latent curing agent.
- the NN bond energy exceeds 210 kJ / mol
- the NN bond becomes strong and high temperature heating is required to decompose the amine imide compound.
- the NN bond energy is less than 100 kJ / mol
- the NN bond may be easily cleaved and the amine imide compound may be decomposed even at a temperature of about room temperature to 60 ° C. For this reason, there exists a possibility that the storage stability of the resin composition containing this amine imide compound may fall.
- the NN bond energy of the amine imide compound can be adjusted by the substituents R 1 to R 5 , particularly R 1 , or R 2 and R 3 of the amine imide compound represented by the general formula (1).
- the substituents R 1 to R 5 will be described.
- the amine imide compound represented by the general formula (1) can be used as a latent curing agent for curing the ionic polymerizable compound, all of the substituents R 1 to R 5 are based on the ionic polymerizable compound. Free of active organic groups. That is, if the ion polymerizable compound is an epoxy resin, the substituents R 1 to R 5 do not contain an active group with respect to the epoxy group.
- the “group active with respect to the epoxy group” includes an amino group, a phenolic hydroxyl group, a thiol group, a carboxyl group, and the like.
- none of the substituents R 1 to R 5 contain a hydroxyl group. This is to further increase the storage stability of the epoxy resin as a latent curing agent.
- the hydroxyl group is not necessarily highly reactive with the epoxy compound, but is preferably not included in the amine imide compound of the present invention.
- R 1 in the general formula (1) may be any organic group, and specific examples of R 1 include an unsubstituted or substituted alkyl group, aralkyl group, alkoxyl group, aryl group, or aryloxy group. Is included.
- R 1 By making R 1 a substituent having a high electron donating property or a bulky substituent, the NN bond energy in the amine imide compound can be adjusted to the above range. Since an aryl group or an aryloxy group (particularly an aryl group) also has a steric bulk, it is considered that the NN bond energy in the amine imide compound can be further reduced.
- Examples of the alkyl group for R 1 include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, and a peptyl group. These may be branched or may be cyclic like a cyclopentyl group or a cyclohexyl group.
- Examples of the aralkyl group include a benzyl group and a phenethyl group.
- Examples of the alkoxy group for R 1 include methoxy group, ethoxy group, propoxy group, butoxy group, pentyloxy group, hexyloxy group, peptyloxy group and the like. These may be branched, or may be cyclic, such as a cyclopentyloxy group or a cyclohexyloxy group.
- Examples of the aryl group of R 1 include monocyclic, condensed cyclic or polycyclic carbocyclic aryl groups such as phenyl group, tolyl group, naphthyl group and anthranyl group; heteroaryl such as pyridinyl group and quinolyl group A group is included.
- Examples of the aryloxy group for R 1 include a phenoxy group and a naphthoxy group.
- the alkyl group, alkoxy group, aryl group and aryloxy group of R 1 are not particularly limited as long as the effects of the present invention are not impaired.
- R 1 may be introduced with any substituent other than a hydroxyl group.
- the optional substituent include an alkyl group, an alkoxy group, an aryloxy group, and an acyloxy group.
- substituents to be introduced in R 1 are points to enhance the electron-donating R 1, an alkoxy group, or an alkyl group.
- Examples of the alkoxy group or aryloxy group introduced into R 1 include a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentoxy group, a phenoxy group, and a tolyloxy group.
- Examples of the alkyl group introduced into R 1 include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, cyclopropyl group, cyclobutyl group, A cyclopentyl group, a cyclohexyl group, and a cycloheptyl group are included.
- One or more of these substituents introduced into R 1 may be present. When there are two or more substituents, these substituents may be of the same type or different types.
- R 1 is preferably an aryl group (particularly a phenyl group) in that it has a high electron-donating property and is a bulky organic group; an unsubstituted or an aryl group into which an alkyl group or an alkoxy group is introduced. More preferably.
- Substituents introduced into the phenyl group of R 1 is, to increase the electron donating R 1, that to the carbon atom bonded to the carbonyl carbon of the amine imide bonded to a carbon atom ortho or para position Is considered preferable.
- R 1 electron donating R 1
- the bulk of the substituent R 1 is increased, so that the NN bond energy in the amine imide compound is decreased, and the decomposability is improved.
- the substituent is bonded to each of the ortho-position and para-position carbon atoms with respect to the carbon atom bonded to the carbonyl carbon of the amine imide. Is considered preferable.
- R 2 and R 3 in the general formula (1) each independently represents an unsubstituted or substituted alkyl group or aryl group.
- R 2 and R 3 are preferably bulky substituents from the viewpoint of reducing the NN bond energy of the amine imide.
- the bulky substituent include an unsubstituted or substituted alkyl group having 1 to 18 carbon atoms and an aryl group having 4 to 18 carbon atoms (for example, a phenyl group).
- R 2 and R 3 may be connected to each other to form a ring together with the N element of the amine imide. Thereby, R 2 and R 3 can be bulky substituents.
- R 2 and R 3 are connected to each other to form a divalent saturated hydrocarbon group having 4 to 8 carbon atoms, — (CH 2 ) n O (CH 2 ) n — or — (CH 2 ) n NR 11 (CH 2 ) n — (both of which n represents a natural number of 2 to 4; R 11 represents an arbitrary organic group) is preferable.
- R 11 may be, for example, an alkyl group having 1 to 10 carbon atoms, an acyl group, or a sulfonyl group, but is preferably an acyl group or a sulfonyl group from the viewpoint of storage stability.
- R 2 and R 3 are connected to each other to form a — (CH 2 ) 2 NR 11 (CH 2 ) 2 — group, a piperazine ring is formed; R 2 and R 3 are connected to each other to form butylene.
- R 2 and R 3 may be connected to each other to form a divalent organic group represented by —U n —NR 11 —U n — (U is a hydrocarbon group having an unsaturated bond).
- R 4 in the general formula (1) is an arbitrary organic group not containing a hydroxyl group. Of these, unsubstituted or substituted, an alkyl group, an aryl group, or an aryloxy group is preferable.
- alkyl group of R 4 examples include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, cyclopropyl group, cyclobutyl group, cyclopentyl group, Examples include a cyclohexyl group, a cycloheptyl group, a benzyl group, and a phenethyl group.
- Examples of the aryl group of R 4 include a monocyclic aryl group such as a phenyl group and a tolyl group; a condensed cyclic aryl group such as a naphthyl group and an anthranyl group; a polycyclic aryl group such as a biphenyl group; and a pyridine group, Heteroaryl groups such as quinolyl groups are included.
- the aryloxy group for R 4 include a phenoxy group and a naphthoxy group.
- a substituent other than a hydroxyl group may be introduced into R 4 .
- the substituent introduced into R 4 include an alkyl group, an alkoxy group, an aryloxy group, and an acyloxy group. These substituents are the same as the substituents introduced into R 1 .
- R 5 of the amine imide compound represented by the general formula (1) is a reaction with other components (mainly acid anhydrides) in the resin composition from the viewpoint of enhancing the storage stability of the resin composition at room temperature. It functions as a “protecting group” that suppresses sex.
- R 5 in the general formula (1) may be an organic group containing no hydroxyl group.
- Examples of the alkyl group for R 5 include a methyl group, an ethyl group, a propyl group, a butyl group, a benzyl group, and a phenethyl group.
- Examples of the aryl group of R 5 include monocyclic aryl groups such as phenyl group and tolyl group; condensed cyclic aryl groups such as naphthyl group and anthranyl group; polycyclic aryl groups such as biphenyl group; pyridine group and quinolyl Heteroaryl groups such as groups are included.
- the organic group containing a carbonyl group of R 5 includes an alkyl-substituted aminocarbonyl group; an N-substituted aminocarbonyl group such as an aryl-substituted aminocarbonyl group; a formyl group; an acyl such as an acetyl group, an isopropylcarbonyl group, a butylcarbonyl group, and a benzoyl group.
- Groups; O-substituted oxycarbonyl groups such as methyloxycarbonyl group, benzyloxycarbonyl group, t-butoxycarbonyl group;
- Examples of the substituent introduced into R 5 include an alkyl group, an alkoxy group, an aryloxy group, and an acyloxy group. Specific examples of these substituents are the same as the substituents introduced into R 1 .
- amine imide compound represented by the general formula (1) examples include the following compounds, but are not limited thereto.
- the amine imide compound used in the present invention potentially has a tertiary amine (that is, in an inactive state) in a room temperature environment. Further, since the amine imide compound has a low NN bond energy in the molecular structure, it is decomposed by heating at a low temperature to generate an isocyanate compound and a tertiary amine.
- This tertiary amine acts as a curing accelerator that accelerates the polymerization or curing of an ion polymerizable compound such as an epoxy resin. Therefore, the latent curing agent containing the amine imide compound can provide an epoxy resin composition having high low-temperature curability.
- the latent curing agent needs to have no reactivity with the ion polymerizable compound under a normal environment (for example, at room temperature).
- the amine imide compound does not generate an amine compound unless the NN bond in the molecular structure is cleaved, and thus has no reactivity with the ion polymerizable compound.
- it has been found that even an amine imide compound in which the NN bond is not cleaved may accelerate the curing and polymerization of the ion polymerizable compound.
- the present inventor has found that the cause is a hydroxyl group contained in the amine imide compound; and by protecting it, a latent curing agent having high storage stability was obtained. Accordingly, it is possible to provide an epoxy resin composition having high storage stability that can maintain a stable state without being cured at room temperature while having high low temperature curability.
- amine imide compound used for the latent curing agent of the present invention is synthesized by any method within a range not impairing the effects of the present invention.
- a preferred method for synthesizing an amine imide compound will be described.
- the amine imide compound can be synthesized, for example, by a reaction represented by the following scheme 1-1 or scheme 1-2.
- the reaction of the following scheme is represented by the general formula (15), an amine imide compound having a hydroxyl group in the molecular structure (also referred to as “hydroxyl group-containing amine imide compound (a)”), the general formula (16) or the general formula
- This is a reaction with a compound represented by (16 ′) having reactivity with a hydroxyl group (also referred to as “cap agent (b)”).
- R 1 to R 5 are as defined in the general formula (1).
- the compound represented by the general formula (16) or the general formula (16 ′) reacts with the hydroxyl group of the compound represented by the general formula (13).
- the compound represented by the general formula (16) reacts with a hydroxyl group, the substituent X is eliminated, and R 5 is bonded to the oxygen atom of the hydroxyl group.
- the isocyanate compound represented by the general formula (16 ′) reacts with a hydroxyl group to form a urethane bond.
- the hydroxyl group-containing amine imide compound (a) is dispersed or dissolved in an appropriate solvent in a reaction vessel. Then, the compound of the general formula (16) or the compound of the general formula (16 ′) as the cap agent (b) may be put into the reaction vessel and stirred while heating as necessary. In order to promote this reaction, an additive may be added to the reaction vessel.
- the compound of the general formula (16) is, for example, an acid halide, it may be added dropwise under ice cooling in the presence of an additive such as a base, if necessary, and further stirred while heating as necessary. Good.
- R 1 to R 4 of the amine imide compound represented by the general formula (1) are groups derived from the hydroxyl group-containing amine imide compound (a); R 5 is a group derived from the cap agent (b). Therefore, the molecular structure of the amine imide compound represented by the general formula (1) is adjusted by appropriately designing the molecular structure of the hydroxyl group-containing amine imide compound (a) and the cap agent (b).
- the hydroxyl group-containing amine imide compound (a) can be synthesized according to a known synthesis method. From the viewpoint of ease of synthesis and safety, it is preferable to synthesize by reacting the three components of carboxylic acid derivative (A), hydrazine derivative (B) and epoxy compound (C). More specifically, equimolar amounts of the carboxylic acid derivative (A), the hydrazine derivative (B), and the epoxy compound (C) may be stirred in a solvent. What is necessary is just to set reaction temperature suitably.
- the carboxylic acid derivative (A) refers to a compound represented by the following formula (A1) or formula (A2), for example.
- R 1 is defined in the same manner as in the general formula (1), and W represents any organic group.
- R 1 is defined in the same manner as in the general formula (1), and Hal represents halogen.
- the carboxylic acid derivative (A1) can be a carboxylic acid or a carboxylic acid ester.
- carboxylic acids or carboxylic acid esters include alkyl-substituted benzoic acids such as 3-methylbenzoic acid, 4-methylbenzoic acid, 3,5-dimethylbenzoic acid, 2,4,6-trimethylbenzoic acid; Methoxybenzoic acid, 3-methoxybenzoic acid, 4-methoxybenzoic acid, 2-methoxy-6-methylbenzoic acid, 2,4-dimethoxybenzoic acid, 3,4-dimethoxybenzoic acid, 3,5-dimethoxybenzoic acid, And alkoxy-substituted benzoic acids such as 3,4,5-trimethoxybenzoic acid and 4-ethoxybenzoic acid; and alkyl esters having about 1 to 4 carbon atoms.
- the carboxylic acid derivative (A2) is an acid halide in which the hydroxyl group in the carboxylic acid is substituted with a halogen.
- the acid halide include carboxylic acid chloride and carboxylic acid bromide.
- R 1 of the amine imide compound represented by the general formula (1) is determined by appropriately designing the molecular design of these carboxylic acid derivatives (A). Among these, a phenyl group having a substituent at the ortho position is more preferable because it improves the decomposability of the amine imide compound represented by the general formula (1).
- the hydrazine derivative (B) refers to, for example, a compound represented by the following formula (B).
- R 2 and R 3 of the amine imide compound represented by the general formula (1) are determined by appropriately performing molecular design of the hydrazine derivative.
- R 2 and R 3 in the general formula (B) are defined in the same manner as in the general formula (1).
- hydrazine derivatives include dimethyl hydrazine, diethyl hydrazine, methyl ethyl hydrazine, methyl propyl hydrazine, methyl butyl hydrazine, methyl pentyl hydrazine, methyl hexyl hydrazine, ethyl propyl hydrazine, ethyl butyl hydrazine, ethyl pentyl hydrazine, ethyl hexyl hydrazine, dipropyl Hydrazine, dibutylhydrazine, dipentylhydrazine, dihexylhydrazine, methylphenylhydrazine, ethylphenylhydrazine, methyltolylhydrazine, ethyltolylhydrazine, diphenylhydrazine, benzylphenylhydrazine, dibenzyl
- An epoxy compound (C) is a compound which has an epoxy group in a molecule
- R 4 of the amine imide compound represented by the general formula (1) is determined by appropriately performing the molecular design of the epoxy compound (C).
- R 4 in the general formula (C) is defined in the same manner as in the general formula (1).
- Examples of the epoxy compound (C) include ethylene oxide, propylene oxide, cyclohexene oxide, 1-octene oxide, n-butyl glycidyl ether, allyl glycidyl ether, and phenyl glycidyl ether.
- a solvent may be used.
- the solvent include alcohols such as methanol, ethanol, propanol, isopropanol, and butanol; ethers such as tetrahydrofuran and diethyl ether, but are not particularly limited.
- the solvent is appropriately selected in consideration of compatibility with the raw material of the hydroxyl group-containing amine imide compound (a) (carboxylic acid derivative (A), hydrazine derivative (B), epoxy compound (C)).
- hydroxyl group-containing amine imide compound (a) examples include the following compounds, but are not particularly limited.
- the cap agent (b) refers to a compound represented by the general formula (16) in Scheme 1-1 or the general formula (16 ′) in Scheme 1-2.
- the compound represented by the general formula (16) includes an X group which is a leaving group, an organic group corresponding to R 5 of the amine imide compound represented by the general formula (1) (which serves as a protective group for a hydroxy group),
- the compound represented by the general formula (16) can be, for example, a carboxylic acid compound in which R 5 is an acyl group or an oxycarbonyl group.
- the compound represented by the general formula (16 ′) has an isocyanate group that reacts with a hydroxyl group to form a urethane bond, and can cap the hydroxyl group.
- R 5 of the amine imide compound represented by the general formula (1) is appropriately set by performing molecular design of the cap agent (b).
- Examples of the carboxylic acid compounds represented by the general formula (16) include fatty acid carboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, pivalic acid, oleic acid, linoleic acid, oxalic acid, and succinic acid. Acids; aromatic carboxylic acids such as benzoic acid, phthalic acid, terephthalic acid; other carboxylic acid compounds such as pyruvic acid, lactic acid, fumaric acid, maleic acid, and derivatives thereof. Examples of the derivatives of carboxylic acid compounds include acid anhydrides, esters, and acid halides thereof.
- Examples of the isocyanate compound represented by the general formula (16 ′) include phenyl isocyanate, tolyl isocyanate, ethylphenyl isocyanate, p-isopropylphenyl isocyanate, 2,6-dimethylphenyl isocyanate, mesityl isocyanate, methoxyphenyl isocyanate, 3 , 5-dimethoxyphenyl isocyanate, acetylphenyl isocyanate, p-dimethylaminophenyl isocyanate, p-toluenesulfonyl isocyanate, p-trifluoromethylphenyl isocyanate, pentafluorophenyl isocyanate, p-chlorophenyl isocyanate, nitrophenyl isocyanate, benzyl isocyanate, benzoyl Isocyanate, 2-biphenyl isocyanate, diphenylmethyl iso
- the cap agent (b) is an acid anhydride or acid halide represented by the general formula (16) or an isocyanate compound represented by the general formula (16 ′) in that the reactivity with the hydroxyl group is high. Preferably there is.
- the hydroxyl group-containing amine imide compound (a) is easily decomposed because of its low NN bond energy in the molecular structure. Acid anhydrides, acid halides or isocyanate compounds are highly reactive with hydroxyl groups and react with hydroxyl groups even in an unheated state, so that the hydroxyl groups are capped without decomposing the unstable hydroxyl-containing amine imide compound (a). Thus, an amine imide compound represented by the general formula (1) can be obtained.
- the hydroxyl group-containing amine imide compound (a) and the cap agent (b) have a total amount of hydroxyl groups / total amount of protecting groups (equivalent ratio) of 1 to It is preferable to blend so as to be 5. If the equivalent ratio exceeds 5, it may be difficult to isolate the amine imide compound after the reaction. On the other hand, if the equivalent ratio is less than 1, only a part of the hydroxyl groups of the hydroxyl group-containing amine imide compound (a) is capped.
- a solvent may be used.
- the solvent include, but are not limited to, halogen solvents such as chloroform and dichloromethane in addition to alcohols, ethers and acetates.
- the solvent may be appropriately selected in consideration of compatibility with the compound that is a synthetic raw material.
- the isocyanate compound and the hydroxyl group-containing amine imide compound (a) are contained in a solvent in the presence of a small amount of base. Stir at room temperature to 100 ° C. for 0.1 to 24 hours.
- a carboxylic acid compound for example, carboxylic acid anhydride or acid halide
- an acid anhydride or acid halide and a hydroxyl group are used.
- the containing amine imide compound (a) may be stirred at room temperature to 100 ° C. for 0.1 to 24 hours in the presence of a reaction accelerator such as a base in a solvent.
- the progress of the cap reaction can be confirmed, for example, by measuring the time-dependent change of the hydroxyl group equivalent contained in the reaction solution by TLC (thin layer chromatography) or HPLC (high performance liquid chromatography).
- the method for measuring the hydroxyl equivalent is not particularly limited. For example, a part of the reaction solution may be collected at regular intervals, and the hydroxyl group in the solution may be measured using a hydroxyl value measuring device or the like, or may be measured by a known titration method for knowing the hydroxyl group. Good.
- the resin composition in the present invention contains at least the latent curing agent of the present invention and an ion polymerizable compound.
- the ion polymerizable compound may be any ion polymerizable compound that is polymerized or cured by the latent curing agent of the present invention.
- an epoxy resin for example, an epoxy resin, a polyamide resin, a polyamideimide resin, a polyurethane resin, a compound having a vinyl group (for example, Acrylic resins, etc.), thioether compounds such as episulfide and thietane, and preferably epoxy resins.
- the epoxy resin is not particularly limited as long as it is a compound having an epoxy group in the molecule.
- a liquid epoxy resin is compatible with the other raw material of an epoxy resin composition at room temperature, a homogeneous epoxy resin composition is given.
- liquid epoxy resins include, but are not particularly limited to, bisphenol A type epoxy resins and bisphenol F type epoxy resins.
- the epoxy resin composition may further contain an acid anhydride.
- An acid anhydride refers to a compound in which two carboxyl groups are dehydrated and condensed. Since the carboxyl group generated by the opening of the acid anhydride has high reactivity with the epoxy group, it is not only suitable as a curing agent for the epoxy resin but also provides a transparent resin composition. Reaction of an epoxy resin and an acid anhydride is accelerated
- acid anhydrides examples include methylhexahydrophthalic anhydride, hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, tetrahydrophthalic anhydride, methylnadic anhydride, acetic anhydride, propionic anhydride, benzoic anhydride, succinic anhydride Acid, maleic anhydride, phthalic anhydride are included. However, it is not limited to these, and a known acid anhydride can be used. Among them, the acid anhydride is more preferably methylhexahydrophthalic anhydride for obtaining an epoxy resin composition having high transparency and curability.
- the acid anhydride is 4- (2,5-dioxotetrahydrofuran-3-yl) -1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic anhydride or 5- (2,5-dioxo
- a bifunctional or higher functional compound such as tetrahydro-3-cyclohexene-1,2-dicarboxylic acid anhydride may be used, and a uniform epoxy resin composition can be obtained by using an acid anhydride that is liquid at room temperature.
- the amine imide group / epoxy group of the epoxy resin composition The molar ratio is preferably in the range of 0.008 to 0.152.
- the molar ratio of amineimide group / epoxy group is more preferably in the range of 0.010 to 0.100, and particularly preferably in the range of 0.015 to 0.075.
- the amine imide group / epoxy group molar ratio exceeds 0.152, a large amount of unreacted amine imide compound remains in the cured product of the epoxy resin composition, which may adversely affect the physical properties of the cured product.
- the molar ratio of amineimide group / epoxy group is less than 0.008, the epoxy resin may not be sufficiently cured.
- an epoxy resin composition containing an epoxy resin and an acid anhydride is cured by alternately bonding an epoxy group and an acid anhydride group
- the epoxy resin and the acid anhydride are about 1 equivalent.
- the equivalent ratio of acid anhydride group / epoxy group in the epoxy resin composition is preferably 0.8 to 1.2. If the equivalent ratio of acid anhydride group / epoxy group exceeds 1.2, or the equivalent ratio of acid anhydride group / epoxy group is less than 0.8, either the acid anhydride or the epoxy resin is excessive. This may remain in the cured product unreacted and may adversely affect the physical properties of the cured product.
- the epoxy resin composition may further contain a coupling agent in order to improve the interfacial adhesion with the base material to be bonded.
- a coupling agent include, but are not particularly limited to, silane coupling agents and titanium coupling agents.
- the coupling agent may be a compound in which some or all of the hydrogen atoms related to the carbon-hydrogen bond in the molecular structure are substituted with fluorine.
- the content of the coupling agent is preferably 0 to 30 parts by mass with respect to 100 parts by mass of the epoxy resin.
- the epoxy resin composition is used to improve various properties such as heat resistance and water resistance, if necessary, fillers such as inorganic or organic fillers; modifiers such as anti-aging agents and plasticizers; ultraviolet rays.
- fillers such as inorganic or organic fillers
- modifiers such as anti-aging agents and plasticizers
- ultraviolet rays Various additives such as stabilizers such as absorbents, preservatives, and antibacterial agents may be included.
- the filler is not particularly limited, and inorganic or organic fillers can be used.
- Inorganic filler refers to inorganic fine particles having an average primary particle size of 0.005 to 10 ⁇ m.
- examples of inorganic fillers include, but are not limited to, silica, talc, alumina, mica and calcium carbonate.
- the surface of the inorganic filler may be untreated, may be methoxylated, trimethylsilylated, or octylsilylated, or may be treated with silicone oil.
- Organic filler refers to particles made of organic matter.
- organic filler examples include, but are not limited to, styrene polymer particles, methacrylate polymer particles, ethylene polymer particles, and propylene polymer particles.
- a filler may be used independently irrespective of the material, and may be used in combination of 2 or more type.
- the content of the filler is preferably 0 to 500 parts by mass with respect to 100 parts by mass of the epoxy resin. Thereby, an epoxy resin composition having high moisture permeation resistance, adhesive strength and the like is obtained.
- the content of the filler may be appropriately adjusted depending on the transparency and viscosity required for the sealant.
- the modifier refers to a component that modifies the original characteristics of the resin composition.
- examples of the modifier include polymerization initiation assistants, anti-aging agents, leveling agents, wettability improvers, surfactants, plasticizers, and flexible agents. These may be used alone or in combination of two or more.
- the epoxy resin composition may further contain a resin other than the epoxy resin.
- resins other than epoxy resins include polyamide, polyamideimide, polyurethane, polybutadiene, polychloroprene, polyether, polyester, styrene-butadiene-styrene block copolymer, petroleum resin, xylene resin, ketone resin, cellulose resin, fluorine System oligomers, silicon oligomers, and polysulfide oligomers. These may be used alone or in combination of two or more.
- the epoxy resin composition may contain a thiol compound or a phenol compound.
- a thiol compound refers to a compound having a thiol group in the molecular structure.
- the thiol compound is not particularly limited, and may be a known compound.
- the phenol compound refers to a compound having a phenol group in the molecular structure. Specific examples thereof include phenol, methylphenol, ethylphenol, and isopropylphenol, but are not particularly limited.
- the latent curing agent of the present invention may be used together with a crosslinkable resin other than an epoxy resin.
- the latent curing agent of the present invention acts as a curing agent or a curing accelerator using a crosslinkable resin.
- crosslinkable resin examples include a compound having an unsaturated bond capable of Michael addition reaction and a compound having an alkoxysilyl group exhibiting a sol-gel reaction.
- crosslinkable resin composition examples include a crosslinkable resin composition containing the latent curing agent of the present invention, an isocyanate compound that forms a polyurethane resin, and a polyol. Such a crosslinkable resin composition may further contain an acid anhydride, a thiol compound, or a phenolic compound.
- the storage stability of the epoxy resin composition is the viscosity change before and after storage when the epoxy resin composition is stored at room temperature (25 ° C.) for 24 hours, that is, “viscosity of epoxy resin composition after storage (mPa ⁇ s)”. / Viscosity ratio represented by “viscosity of epoxy resin composition before storage (mPa ⁇ s)”.
- the viscosity ratio is preferably 1.0 or more and less than 2.0, and more preferably 1.0 or more and less than 1.5. When the viscosity ratio is 1.0, it means that there is no change in viscosity before and after storage of the epoxy resin composition. For this reason, it is preferable that the viscosity ratio is closer to 1.0 because the viscosity change does not occur.
- the viscosity of the epoxy resin composition can be measured with an E-type viscometer.
- the measurement conditions may be a measurement temperature: 25 ° C. and a measurement time: 3 minutes.
- the low temperature curability of the epoxy resin composition can be shown by differential scanning calorimetry (DSC). Specifically, a sample in which an epoxy resin composition is sandwiched between two NaCl crystal plates (thickness 5 mm) is used as a sample. The infrared transmission spectrum of the sample is measured with a known FT-IR measurement apparatus before and after heat treatment of the sample at a predetermined temperature and for a predetermined time. The absorption peak height (near 910 cm ⁇ 1 ) derived from the reverse symmetrical ring stretching of the epoxy group obtained by this measurement is the absorption peak height (near 1600 cm ⁇ 1 ) derived from the intra-CC stretching of the benzene ring. Divide and standardize. Thereby, the reaction rate of an epoxy group is computable from the decreasing degree of the peak derived from an epoxy group by heat processing.
- DSC differential scanning calorimetry
- An epoxy resin composition containing a latent curing agent of the present invention is suitable as a one-pack type resin composition.
- the one-component type resin composition is a room temperature while a curing accelerating component such as an amine imide compound, a component to be cured such as an epoxy resin, and a curing component such as an acid anhydride are uniformly mixed. During the storage, the curing component and the component to be cured do not react and a stable state is maintained.
- Such a one-component type resin composition does not require operations such as weighing, mixing, and stirring each component, as compared with a two-component type in which it is necessary to mix a curing component and a component to be cured at the time of use. Therefore, it is easy to handle and work.
- the resin composition containing the latent curing agent of the present invention since the raw materials involved in the curing reaction are uniformly mixed, the resin can be uniformly cured. As a result, local unevenness in the physical properties after curing hardly occurs, and it can be used as a highly reliable material. It can also be preferably used for applications that require high transparency after curing.
- the epoxy resin composition does not cure at room temperature and has a stable viscosity, but becomes a cured product when heated at a low temperature. Therefore, it can be applied to industrial materials such as paints, adhesives, photoresists, various automobile parts, electrical / electronic materials, and optical materials.
- the epoxy resin composition is useful as an adhesive or coating agent for members having low heat resistance, and as a sealing agent for liquid crystal or organic EL elements that are weak against heat and easily deteriorate.
- the epoxy resin composition is useful as an adhesive for a member that does not transmit light, such as metal, because curing is sufficiently accelerated at low temperatures without being irradiated with light such as ultraviolet rays at the time of curing. is there. Moreover, since an epoxy resin composition hardens
- the organic EL display has a display substrate on which an organic EL element is arranged and a counter substrate that is paired with the display substrate, and a seal for sealing the organic EL element between the display substrate and the counter substrate. An agent is applied.
- the sealing agent in an organic EL display is used as a sealing agent for sealing a liquid crystal or an organic EL element, or as an adhesive for a display substrate constituting various image display devices. Since the sealing agent of the present invention contains the latent curing agent of the present invention and an epoxy resin, both the storage stability at room temperature and the low-temperature curability are both high; and if an acid anhydride is contained, the transparency is also high. Therefore, it is particularly suitable for a “surface-sealed organic EL display” that seals the entire surface of the organic EL element.
- the surface-sealed organic EL display can increase the strength of the display as compared with the organic EL display in which the organic EL element is frame-sealed. Moreover, an organic EL element can be directly sealed with a sealing agent. Therefore, a mask that has been conventionally used for protecting the organic EL element becomes unnecessary, and further simplification of the manufacturing process and reduction of manufacturing cost are expected.
- the method for applying the sealant on the substrate of the organic EL display is not particularly limited as long as the sealant can be applied uniformly on the substrate.
- Examples of the application method include a known method using screen printing, a dispenser, or the like.
- a plate-like member having excellent moisture resistance such as a resin film, a glass plate, or a metal plate may be used as the sealing plate, and a sealing agent may be filled between the display substrate and the sealing plate.
- the viscosity of the sealant is adjusted by changing the compounding ratio of the resin and other additives used, for example.
- the viscosity of the sealing agent is preferably 100 to 10,000 mPa ⁇ s, and more preferably 500 to 8000 mPa ⁇ s, from the viewpoint of workability suitable for the entire sealing of the organic EL element.
- the viscosity can be measured with an E-type viscometer (RC-500 manufactured by Toki Sangyo Co., Ltd.) at a measurement temperature of 25 ° C.
- the sealing agent is preferably prepared so that the raw materials are uniformly mixed.
- 2nd amine imide compound The 2nd amine imide compound in this invention is represented by following General formula (2).
- R 6 in the general formula (2) represents an aryl group or an aryloxy group which is unsubstituted or has a substituent other than a hydroxyl group
- R 7 and R 8 each independently represents an alkyl group or an aryl group having an unsubstituted or non-hydroxyl substituent, or linked together to form a ring containing no hydroxyl group
- R 9 represents an organic group other than a hydroxyl group
- R 10 represents an alkyl group, an aryl group, an aminocarbonyl group, an acyl group or an oxycarbonyl group which is unsubstituted or has a substituent other than a hydroxyl group.
- R 6 to R 10 do not have an active group with respect to the epoxy group.
- R 6 in the general formula (2) has the same meaning as an aryl group or aryloxy group having a substituent other than unsubstituted or a hydroxyl group in R 1 in the general formula (1).
- R 6 in the general formula (2) is preferably an unsubstituted aryl group, an aryl group having an alkyl group, or an aryl group having an alkoxy group.
- R 7 and R 8 in the general formula (2) are an alkyl group or an aryl group having a substituent other than unsubstituted or a hydroxyl group in R 2 and R 3 in the general formula (1), or mutually It is synonymous with connecting to form a ring that does not contain a hydroxyl group.
- R 7 and R 8 in the general formula (2) are connected to each other to form a saturated hydrocarbon group having 4 to 8 carbon atoms, — (CH 2 ) n O (CH 2 ) n — or — (CH 2 ) n NR 12 (CH 2 ) n — (both of which n represents a natural number of 2 to 4; R 12 represents an arbitrary organic group) is preferable.
- R 12 may be, for example, an alkyl group having 1 to 10 carbon atoms, an acyl group, or a sulfonyl group, but is preferably an acyl group or a sulfonyl group from the viewpoint of storage stability.
- R 9 in the general formula (2) has the same meaning as the organic group other than the hydroxyl group in R 4 in the general formula (1).
- R 10 in the general formula (2) is an alkyl group, an aryl group, an aminocarbonyl group, an acyl group, or an oxycarbonyl group having a substituent other than unsubstituted or a hydroxyl group in R 5 in the general formula (1). It is synonymous with.
- the second amine imide compound has an unstable NN bond in the molecular structure and easily decomposes even at low temperature heating due to steric hindrance to generate an isocyanate compound and a tertiary amine.
- the hydroxyl group in the molecular structure of the second amine imide compound is capped with a cap agent. Therefore, the epoxy resin composition containing the second amine imide compound, the acid anhydride, and the epoxy resin does not react with the epoxy group at room temperature, and the increase in viscosity is suppressed to a low level. Furthermore, a tertiary amine is easily generated even by low-temperature heating, and the curing reaction between the epoxy resin and the acid anhydride proceeds rapidly.
- an isocyanate compound is generated in addition to the tertiary amine.
- This isocyanate compound does not adversely affect the cured product of the epoxy resin composition because it reacts with a hydroxyl group formed by ring opening of an epoxy group.
- the white crystal was a hydroxyl group-containing amine imide compound A, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine p-methoxybenzimide.
- the white crystal was a hydroxyl group-containing amine imide compound B, that is, 1- (2-hydroxybutyl) -1- (2-methoxybenzoyl) aminopiperidinium inner salt.
- Column purification was performed. The purified concentrate was dried under reduced pressure to obtain 5.80 g (yield: 19.2 mol%) of a colorless and transparent oily substance with a purity of 98.0%.
- the white crystal was a hydroxyl group-containing amine imide compound C, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine o, p-dimethoxybenzimide.
- the purified concentrate was crystallized using hexane, and then the crystals were dried under reduced pressure to obtain 6.17 g (yield 19.7 mol%) of white crystals having a purity of 98.6%.
- the white crystal was a hydroxyl group-containing amine imide compound D, that is, N- (2-hydroxybutyl) -N- (2-methoxybenzoyl) aminomorpholinium inner salt.
- the concentrate after washing was dried under reduced pressure to obtain 11.43 g (yield 33.6 mol%) of white crystals having a purity of 99.0%.
- the white crystal was a hydroxyl group-containing amine imide compound E, that is, 1- (2,4-dimethoxybenzoyl) amino-1- (2-hydroxybutyl) piperidinium inner salt.
- the white crystal was a hydroxyl group-containing amine imide compound F, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine ethyl imide.
- the white crystal was a hydroxyl group-containing amine imide compound G, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine lactimide.
- the white crystal was a hydroxyl group-containing amine imide compound H, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine p-methylbenzimide.
- the white crystal was a hydroxyl group-containing amine imide compound I, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine p-fluorobenzimide.
- Column purification was performed. The purified concentrate was dried under reduced pressure to obtain 12.12 g (yield 44.0 mol%) of a colorless and transparent oily substance with a purity of 96.8%.
- the white crystal was a hydroxyl group-containing amine imide compound J, that is, 1,1-dimethyl-1- (2-hydroxybutyl) amine o-methoxybenzimide.
- the measured value was 386.2. From the above results, it was confirmed that the white crystals were amine imide compound 1, that is, 1,1-dimethyl-1- (2-phenylcarbamylbutyl) amine p-methoxybenzimide.
- the organic layer was concentrated under reduced pressure to obtain a viscous concentrate.
- This viscous concentrate was dissolved in twice the amount of ethyl acetate.
- the purified concentrate was crystallized using hexane, the crystals were dried under reduced pressure to obtain 7.04 g of white crystals having a purity of 97.2% (yield: 80.4 mol%).
- the white crystals were amine imide compound 2, that is, 1- (2-methoxybenzoyl) amino-1- (2-phenylcarbamoyloxybutyl) piperidinium inner salt.
- the white crystals were amine imide compound 3, that is, 1,1-dimethyl-1- (2-phenylcarbamylbutyl) amine o, p-dimethoxybenzimide.
- the measured value was 428.1. From the above results, it was confirmed that the white crystals were amine imide compound 4, that is, N- (2-methoxybenzoyl) amino-N- (2-phenylcarbamoyloxybutyl) morpholinium inner salt.
- the purified concentrate was crystallized by concentrating under reduced pressure using hexane, and the crystals were washed and dried to give 10.91 g of white crystals having a purity of 98.2% (yield 94.1). Mol%).
- the measured value was 456.2. From the above results, it was confirmed that the white crystals were amine imide compound 5, that is, 1- (2,4-dimethoxybenzoyl) amino-1- (2-pivaloyloxybutyl) piperidinium inner salt.
- the concentrate was subjected to solvent exchange with ethyl acetate and then concentrated, and the resulting slurry was washed with ethyl acetate.
- the obtained organic layer was concentrated, crystallized using hexane, and then dried under reduced pressure to obtain 3.74 g (yield 53.2 mol%) of white crystals having a purity of 99.2%.
- the white crystals were amine imide compound 6, that is, 1- (2-acetoxybutyl) -1- (2-methoxybenzoyl) aminopiperidinium inner salt.
- the measured value was 411.3. From the above results, it was confirmed that the white crystals were amine imide compound 7, that is, 1- (2-benzoyloxybutyl) -1- (2-methoxybenzoyl) aminopiperidinium inner salt.
- the measured value was 391.3. From the above results, it was confirmed that the white crystals were amine imide compound 8, ie, 1- (2-methoxybenzoyl) amino-1- (2-pivaloyloxybutyl) piperidinium inner salt.
- the purified concentrate was recrystallized using hexane and then dried under reduced pressure to obtain 0.82 g (yield 36.0 mol%) of white crystals having a purity of 98.1%.
- the measured value was 351.3. From the above results, it was confirmed that the white crystals were amine imide compound 9, that is, 1,1-dimethyl-1- (2-pivaloloxybutyl) amine o-methoxybenzimide.
- Amineimide compounds 1 to 11 used in the present invention are Amineimide compounds 1 to 11 used in the present invention.
- an epoxy resin composition using the amine imide compound or the hydroxyl group-containing amine imide compound of the present invention as a raw material was prepared. Then, various properties of the epoxy resin composition, ie, curability, storage stability at room temperature, and initial viscosity were measured.
- Epoxy resin Epiclon 830S Dainippon Ink & Chemicals, Inc.: 100 parts by weight Acid anhydride (Licacid MH-700 Shin Nippon Rika Co., Ltd.): 93 parts by weight Predetermined amine imide compound according to each Example and Comparative Example: ( Molecular weight x 0.037) parts by mass
- the viscosity of the epoxy resin composition was measured with an E-type viscometer (RC-500, manufactured by Toki Sangyo Co., Ltd.) at 25 ° C. for 3 minutes. It was.
- the NN bond energy of the amine imide compound was calculated by a “B3LYP method” known as a density functional method. All calculations were performed using Gaussian 03 Rev. C.02. The basis function used here was cc-pVDZ for all elements. Specifically, assuming the dissociation reaction represented by the above-mentioned scheme A, the structures of reactants and products before and after the dissociation were optimized and total energy was calculated. The NN bond energy was estimated by subtracting the total energy of the amine imide compound before dissociation from the sum of the total energies of the products after dissociation.
- Example 1 An epoxy resin composition was prepared using the amine imide compound 1 synthesized in Synthesis Example 1, and various properties thereof were examined.
- Example 2 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 2 synthesized in Synthesis Example 2 instead of the amine imide compound used in Example 1.
- Example 3 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 3 synthesized in Synthesis Example 3 instead of the amine imide compound used in Example 1.
- Example 4 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 4 synthesized in Synthesis Example 4 instead of the amine imide compound used in Example 1.
- Example 5 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 5 synthesized in Synthesis Example 5 instead of the amine imide compound used in Example 1.
- Example 6 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 6 synthesized in Synthesis Example 6 instead of the amine imide compound used in Example 1.
- Example 7 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 7 synthesized in Synthesis Example 7 instead of the amine imide compound used in Example 1.
- Example 8 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 8 synthesized in Synthesis Example 8 instead of the amine imide compound used in Example 1.
- Example 9 Various characteristics were examined in the same manner as in Example 1 except that the epoxy resin composition was prepared using the amine imide compound 9 synthesized in Synthesis Example 9 instead of the amine imide compound used in Example 1.
- the epoxy resin compositions of Examples 1 to 9 containing an amine imide compound having no highly reactive organic group such as a hydroxyl group in the molecular structure are cured even at a low temperature of about 90 ° C.
- the storage stability at room temperature is high.
- these epoxy resin compositions have a low initial viscosity and good workability.
- Example 1 and Comparative Example 1 are compared, and Example 2 and Comparative Example 2 are compared.
- the reason why the epoxy resin compositions of Examples 1 to 9 have high low temperature curability is considered to be due to the low NN bond energy of the amine imide compound which is one of the raw materials of the epoxy resin composition.
- the NN bond energy in the molecular structure of the amine imide compound used in each example was calculated by the following method, and the decomposability of the amine imide compound was evaluated by comparing the size.
- the NN bond energy of the amine imide compounds of Examples 1 to 9 is about 210 kJ / mol at the upper limit, and the lower limit is less than 112 kJ / mol. Therefore, it was found that the NN bond energies of the amine imide compounds of Examples 1 to 9 were extremely small.
- the NN bond energy of the amine imide compounds of Comparative Examples 1 to 8 is 175 kJ / mol or more, and some of them exceed 210 kJ / mol. . Therefore, it was found that the NN bond energies of the amine imide compounds of Comparative Examples 1 to 8 were relatively high.
- Example 1 and Example 3 when Example 1 and Example 3 are compared, it is more NN that the substituent on the phenyl group bonded to the carbonyl carbon of the amine imide is in both the ortho and para positions rather than only in the para position. It can be seen that the binding energy is low. And it turns out that low-temperature curability also improves.
- Example 2 and Example 5 when Example 2 and Example 5 are compared, it is more likely that the substituent on the phenyl group bonded to the carbonyl carbon of the amine imide is N- It turns out that N bond energy becomes low. And it turns out that low-temperature curability also improves.
- Example 3 and Example 5 or Example 8 and Example 9 are compared, it is clear that the lower the NN bond energy, the higher the low-temperature curability.
- Example 2 when Example 2 and Examples 6 to 8 are compared, the resin composition containing an amine imide compound in which R 5 is an acyl group is more than the resin composition containing an amine imide compound in which R 5 is an N-substituted aminocarbonyl group. It can also be seen that the balance between storage stability at room temperature and low-temperature curability is even better.
- the amine imide compound used in the present invention has a relatively unstable NN bond in the molecular structure, and therefore easily decomposes at a low temperature to generate an isocyanate compound and a tertiary amine. Therefore, the amine imide compound is useful as a curing accelerator that accelerates curing of an ion polymerizable compound such as an epoxy resin.
- the epoxy resin composition containing the amine imide compound, the epoxy resin and the acid anhydride used in the present invention has a high storage stability at room temperature and is excellent in curing at a low temperature.
- the amine imide compound used for this invention can give the epoxy resin composition according to various uses, such as the sealing compound of an organic EL display.
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Abstract
Description
また、当該潜在性硬化剤を含むことにより、室温での保存安定性および低温硬化性に優れるエポキシ樹脂組成物およびシール剤、該シール剤を利用した有機ELディスプレイを提供することを目的とする。
[1] イオン重合性化合物を硬化させる潜在性硬化剤であって、水酸基を有しないアミンイミド化合物を含み、前記アミンイミド化合物の、B3LYP密度汎関数法により求められるN-N結合エネルギーが100~210kJ/molである、潜在性硬化剤。
[2] 前記アミンイミド化合物のN-N結合エネルギーが、100~195kJ/molである、[1]記載の潜在性硬化剤。
[3] 前記アミンイミド化合物は、下記一般式(1)で表される、[1]または[2]記載の潜在性硬化剤。
[4] 前記一般式(1)中のR1が、未置換または置換基を有する、アリール基またはアリーロキシ基である、[3]記載の潜在性硬化剤。
[5] 前記一般式(1)中のR2とR3が相互に連結して、炭素数が4~8の2価の飽和炭化水素基、-(CH2)nO(CH2)n-または-(CH2)nNR11(CH2)n-(いずれも、nは2~4の自然数を表わし;R11は任意の有機基を表す)を表す、[3]または[4]記載の潜在性硬化剤。
[6] 前記一般式(1)中のR5がカルボニル基を有する有機基であって、
前記カルボニル基の炭素原子が、前記一般式(1)の酸素原子と結合している、[3]~[5]のいずれかに記載の潜在性硬化剤。
[7] 前記一般式(1)中のR5がアシル基である、[3]~[6]のいずれかに記載の潜在性硬化剤。
[8] (a)[1]~[7]のいずれかに記載の潜在性硬化剤と、(b)エポキシ樹脂と、を含む、エポキシ樹脂組成物。
[9] (c)酸無水物をさらに含む、[8]記載のエポキシ樹脂組成物。
[10] 前記エポキシ樹脂組成物において、酸無水基/エポキシ基で表される当量比が0.8~1.2であり、かつ、アミンイミド基/エポキシ基のモル比が0.008~0.152である、[9]記載のエポキシ樹脂組成物。
[11] [8]~[10]のいずれかに記載のエポキシ樹脂組成物を含む、シール剤。
[12] 有機EL素子が配置された表示基板と、前記表示基板と対になる対向基板と、前記表示基板と対向基板との間に介在し、前記有機EL素子を封止する[11]記載のシール剤の硬化物と、を含む有機ELディスプレイ。
[13] 下記一般式(2)で表される、アミンイミド化合物。
[14] 前記一般式(2)中のR6は、未置換のアリール基、アルキル基を有するアリール基、またはアルコキシ基を有するアリール基である、[13]記載のアミンイミド化合物。
[15] 前記一般式(2)中のR7とR8が相互に連結して、炭素数が4~8の2価の飽和炭化水素基、-(CH2)nO(CH2)n-または-(CH2)nNR12(CH2)n-(いずれも、nは2~4の自然数を表わし;R12は任意の有機基を表す)を表す、[13]または[14]記載のアミンイミド化合物。
本発明の潜在性硬化剤は、イオン重合性化合物を硬化させる潜在性硬化剤であって、水酸基を有しないアミンイミド化合物(第1のアミンイミド化合物)を含む。また、水酸基を有しないアミンイミド化合物の、B3LYP密度汎関数法により求められるN-N結合エネルギーは、100~210kJ/molである。
R11は、例えば炭素数1~10のアルキル基、アシル基、スルホニル基でありうるが、保存安定性の観点からは、アシル基またはスルホニル基であることが好ましい。
R4のアリール基の例には、フェニル基、トリル基などの単環式アリール基;ナフチル基、アントラニル基などの縮合環式アリール基;ビフェニル基などの多環式アリール基;およびピリジン基、キノリル基のようなヘテロアリール基が含まれる。R4のアリーロキシ基の例には、フェノキシ基、ナフトキシ基などが含まれる。
本発明の潜在性硬化剤に用いられるアミンイミド化合物は、本発明の効果を損なわない範囲で任意の方法により合成される。以下、好ましいアミンイミド化合物の合成方法を説明する。
水酸基含有アミンイミド化合物(a)は、公知の合成方法に準じて合成されうる。合成の簡便性や安全性などの観点から、カルボン酸誘導体(A)、ヒドラジン誘導体(B)およびエポキシ化合物(C)の3成分を反応させることにより、合成することが好ましい。より具体的には、等モル量のカルボン酸誘導体(A)と、ヒドラジン誘導体(B)と、エポキシ化合物(C)とを溶剤中にて撹拌すればよい。反応温度は適宜設定すればよい。
これらの中でも、低温で合成でき、かつN-N結合を維持し易いという点で、ジメチルヒドラジンやN-アミノピペリジン、N-アミノモルホリンがより好ましい。
キャップ剤(b)とは、スキーム1-1中の一般式(16)、またはスキーム1-2中の一般式(16')で表される化合物をいう。一般式(16)で表される化合物は、脱離基であるX基と、一般式(1)で表されるアミンイミド化合物のR5に相当する有機基(ヒドロキシ基の保護基となる)とを有する。一般式(16)で表される化合物は、例えば、R5がアシル基またはオキシカルボニル基などである、カルボン酸系化合物でありうる。一般式(16')で表される化合物は、水酸基と反応してウレタン結合を形成するイソシアネート基を有し、水酸基をキャップすることができる。一般式(1)で表されるアミンイミド化合物のR5は、このキャップ剤(b)の分子設計を行うことにより適宜設定される。
本発明における樹脂組成物は、少なくとも本発明の潜在性硬化剤と、イオン重合性化合物とを含む。イオン重合性化合物は、本発明の潜在性硬化剤によって重合または硬化されるイオン重合性化合物であればよく、例えばエポキシ樹脂、ポリアミド樹脂、ポリアミドイミド樹脂、ポリウレタン樹脂、ビニル基を有する化合物(例えば、アクリル樹脂等)、エピスルフィド、チエタンのようなチオエーテル化合物などであり、好ましくはエポキシ樹脂である。
中でも、酸無水物は、透明度および硬化性が高いエポキシ樹脂組成物を得る上で、メチルヘキサヒドロ無水フタル酸であることがより好ましい。酸無水物は、4-(2,5-ジオキソテトラヒドロフラン-3-イル)-1,2,3,4-テトラヒドロナフタレン-1,2-ジカルボン酸無水物または5-(2,5-ジオキソテトラヒドロ-3-シクロヘキセン-1,2-ジカルボン酸無水物のような2官能以上の化合物であってもよい。室温で液状である酸無水物を用いると、均一なエポキシ樹脂組成物が得られる。
アミンイミド基/エポキシ基のモル比が0.152を超えると、エポキシ樹脂組成物の硬化物中に未反応のアミンイミド化合物が多く残存し、硬化物の物性に悪影響を与えるおそれがある。一方で、アミンイミド基/エポキシ基のモル比が0.008を下回ると、エポキシ樹脂を十分に硬化させることができないおそれがある。
酸無水物基/エポキシ基の当量比が1.2超か、または酸無水物基/エポキシ基の当量比が0.8未満であると、酸無水物またはエポキシ樹脂のうちのいずれか過剰な方が未反応のまま硬化物中に残存し、硬化物の物性に悪影響を与えるおそれがある。
充填剤は、特に限定されず、無機または有機フィラを使用することができる。無機フィラは、一次粒子の平均粒径が0.005~10μmの無機微粒子をいう。
無機フィラの例には、シリカ、タルク、アルミナ、雲母、炭酸カルシウムが含まれるが特に限定されない。無機フィラの表面は、未処理であってもよいし、メトキシ化、トリメチルシリル化、またはオクチルシリル化されてもよいし、シリコーンオイルによって処理されてもよい。
有機フィラは、有機物からなる粒子をいう。有機フィラの例には、スチレン系ポリマ粒子、メタクリレート系ポリマ粒子、エチレン系ポリマ粒子、プロピレン系ポリマ粒子が含まれるが、特に限定されない。
充填剤は、その材質に関わらず、単独で使用してもよいし、2種以上を組み合わせて使用してもよい。
改質剤は、樹脂組成物本来の特性を改質する成分をいう。改質剤の例には、重合開始助剤、老化防止剤、レベリング剤、濡れ性改良剤、界面活性剤、可塑剤、可とう剤が含まれる。これらは、単独で使用してもよいし、2種以上を組み合わせて使用してもよい。
エポキシ樹脂組成物は、さらにエポキシ樹脂以外の樹脂を含んでいてもよい。エポキシ樹脂以外の樹脂の例には、ポリアミド、ポリアミドイミド、ポリウレタン、ポリブタジェン、ポリクロロプレン、ポリエーテル、ポリエステル、スチレン-ブタジエン-スチレンブロック共重合体、石油樹脂、キシレン樹脂、ケトン樹脂、セルロース樹脂、フッ素系オリゴマー、シリコン系オリゴマー、ポリスルフィド系オリゴマーが含まれる。これらは、単独で使用してもよいし、2種以上を組み合わせて使用してもよい。
架橋性樹脂組成物としては、例えば、本発明の潜在性硬化剤、ポリウレタン樹脂を形成するイソシアネート化合物、およびポリオールを含む架橋性樹脂組成物がある。このような架橋性樹脂組成物は、さらに酸無水物、チオール化合物、またはフェノール性化合物を含んでいてもよい。
エポキシ樹脂組成物の保存安定性は、当該エポキシ樹脂組成物を室温(25℃)で24時間保存したときの保存前後の粘度変化、すなわち「保存後のエポキシ樹脂組成物の粘度(mPa・s)/保存前のエポキシ樹脂組成物の粘度(mPa・s)」で表される粘度比により示される。前記粘度比が、1.0以上2.0未満であることが好ましく、1.0以上1.5未満であることがより好ましい。粘度比が1.0であると、エポキシ樹脂組成物の保存前後での粘度変化がないことを意味する。このため、粘度比が1.0に近いほど、粘度変化が生じていないため、好ましい。
エポキシ樹脂組成物の低温硬化性は、示差走査熱量測定(DSC)により示されうる。具体的には、エポキシ樹脂組成物を2枚のNaCl結晶板(厚み5mm)の間に挟んだものをサンプルとする。このサンプルを、所定温度および所定時間で熱処理する前と後とで、当該サンプルの赤外線透過スペクトルを公知のFT-IR測定装置にて測定する。この測定で得られるエポキシ基の逆対称環伸縮に由来する吸収ピーク高さ(910cm-1付近)を、ベンゼン環の環内C-C伸縮に由来する吸収ピーク高さ(1600cm-1付近)で除して規格化する。これにより、熱処理によるエポキシ基由来のピークの減少度合いから、エポキシ基の反応率を算出することができる。
本発明の潜在性硬化剤を含むエポキシ樹脂組成物は、1液タイプの樹脂組成物として好適である。1液タイプの樹脂組成物とは、アミンイミド化合物のような硬化促進成分と、エポキシ樹脂のような被硬化成分と、酸無水物のような硬化成分と、が均一に混合されていながらも、室温で保存されている間は、硬化成分と被硬化成分とが反応せず、安定した状態が維持されるものである。
このような1液タイプの樹脂組成物は、使用時に硬化成分と被硬化成分とを混合する必要がある2液タイプと比べて、各成分を計量、混合、および攪拌するなどの作業が不要であるため、取扱性や作業性が高い。
また、本発明の潜在性硬化剤を含む樹脂組成物では、硬化反応に関わる原料が均一に混合されているため、樹脂を均一に硬化させることができる。これにより、硬化後の物性に局所的なムラが生じにくく、信頼性の高い材料として使用できる。また、硬化後に高い透明性を要求される用途にも好ましく使用することができる。
本発明のシール剤は、本発明の潜在性硬化剤とエポキシ樹脂とを含むため、室温での保存安定性と低温硬化性がともに高く;さらに酸無水物を含有すれば透明性も高くなる。このため、特に有機EL素子を全面封止する「面封止型有機ELディスプレイ」に好適である。
本発明における、第2のアミンイミド化合物は、下記の一般式(2)で表される。
R7およびR8は、それぞれ独立して、未置換または水酸基以外の置換基を有する、アルキル基またはアリール基を表すか、あるいは相互に連結して水酸基を含まない環を形成し;
R9は、水酸基以外の有機基を表し;
R10は、未置換または水酸基以外の置換基を有する、アルキル基、アリール基、アミノカルボニル基、アシル基またはオキシカルボニル基を表わす。ただし、R6~R10は、エポキシ基に対して活性な基を有しないものとする。
そのため、第2のアミンイミド化合物、酸無水物およびエポキシ樹脂を含むエポキシ樹脂組成物は、室温ではエポキシ基と反応せず、粘度上昇が低く抑えられる。さらに、低温加熱でも容易に3級アミンを発生し、エポキシ樹脂と酸無水物との硬化反応を素早く進行させる。なお、第2のアミンイミド化合物が分解すると、3級アミンのほかにイソシアネート化合物が発生する。このイソシアネート化合物は、エポキシ基が開環して生成する水酸基などと反応するため、エポキシ樹脂組成物の硬化物に悪影響を与えることがない。
4-メトキシ安息香酸メチル16.62g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)と、をt-ブタノール80mlに溶解させた。この溶液を55℃で40時間撹拌しながら反応させた。反応終了後に得た溶液を減圧濃縮することにより、溶媒と副生したメタノールとを溶液から除去し、粘稠性の濃縮物を得た。この粘稠性の濃縮物を、該濃縮物の倍量の酢酸エチルに溶解した。得た溶液を、メタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。ヘキサンを使用して精製後の濃縮物を結晶化させた後、この結晶を減圧乾燥することにより、純度99.6%の白色結晶13.1g(収率49.0モル%)を得た。
7.80(d,2H,C6H4)、6.83(d,2H,C6H4)、4.23-4.08(m,1H,CHOH)、3.80(s,3H,OCH3)、3.64(d,6H,NCH3)、3.56-3.10(m,2H,NCH2)、1.65-1.44(m,2H,CH2CH3) 1.03(t,3H,CH2CH3)
2-メトキシ安息香酸メチル16.62g(0.10モル)と、1-アミノピペリジン10.52g(0.105モル)と、1,2-エポキシブタン7.57g(0.105モル)と、をt-ブタノール100mlに溶解させた。この溶液を、60℃で3日間撹拌し反応させた。反応が終了した溶液を減圧濃縮することにより、溶液中から溶媒と副生したメタノールを除去して、粘稠性の濃縮物を得た。この粘稠性の濃縮物を、該濃縮物の倍量の酢酸エチルに溶解した。この溶液をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。ヘキサンを使用して精製した濃縮物を結晶化させた後、この結晶を減圧乾燥することにより、純度96.4%の白色結晶14.88g(収率46.8モル%)を得た。
7.42(d,1H,C6H4)、7.31-7.17(m,1H,C6H4)、6.97-6.80(m,2H,C6H4)、4.89-4.71(m,2H,C5H10)、4.62-4.51(m,2H,C5H10)、4.33-4.20(m,1H,CHOH)、3.88-3.42(m,2H,NCH2)、3.84(s,3H,OCH3)、3.21-2.92(m,2H,C5H10)、2.32-2.09(m,2H,C5H10)、1.82-1.59(m,2H,C5H10)、1.60-1.40(m,2H,CH2CH3)、1.02(t,3H,CH2CH3)
2,4-ジメトキシ安息香酸メチル19.62g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)と、をイソプロピルアルコール100mlに溶解させた。室温下において、この溶液を6日間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより、溶液中から溶媒と副生したメタノールを除去して、粘稠性の濃縮物を得た。この濃縮物を、該濃縮物の倍量の酢酸エチルに溶解してから、この溶液をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。精製した後の濃縮物を減圧乾燥することにより、純度98.0%の無色透明な油状物5.80g(収率19.2モル%)を得た。
7.69(d,1H,C6H3)、6.95-6.87(m,2H,C6H3)、4.24-4.05(m,1H,CHOH)、3.83(s,6H,OCH3)、3.60(d,6H,NCH3)、3.52-3.07(m,2H,NCH2)、1.60-1.48(m,2H,CH2CH3)、1.02(t,3H,CH2CH3)
2-メトキシ安息香酸メチル17.13g(0.10モル)と、N-アミノモルホリン11.06g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)と、をt-ブタノール100mlに溶解させた。この溶液を、60℃で33時間撹拌し、反応させた。反応が終了した溶液を濃縮することにより、溶液中から溶剤を留去し、粘稠性の濃縮物を得た。この濃縮物を、メタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。ヘキサンを使用して精製後の濃縮物を結晶化させた後、この結晶を減圧乾燥することにより、純度98.6%の白色結晶6.17g(収率19.7モル%)を得た。
7.43(d,1H,C6H4)、7.30-7.17(m,1H,C6H4)、6.96-6.81(m,2H,C6H4)、4.61-4.51(m,4H,C4H8O)、4.34-4.20(m,1H,CHOH)、3.87-3.42(m,2H,NCH2)、3.83(s,3H,OCH3)、3.21-2.91(m,4H,C4H8O)、1.58-1.40(m,2H,CH2CH3)、1.02(t,3H,CH2CH3)
2,4-ジメトキシ安息香酸メチル19.62g(0.10モル)と、1-アミノピペリジン10.96g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)と、をt-ブタノール100mlに溶解させた。この溶液を60℃で33時間撹拌し、反応させた。反応が終了した溶液を濃縮することにより、溶液中から溶剤を留去し、粘稠性の濃縮物を得た。この濃縮物をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。精製した後の濃縮物を、酢酸エチル:ヘキサン=1:1の溶剤を使用して洗浄した。そして、洗浄後の濃縮物を減圧乾燥することによって純度99.0%の白色結晶11.43g(収率33.6モル%)を得た。
7.39(d,1H,C6H3)、6.97-6.82(m,2H,C6H3)、4.89-4.74(m,2H,C5H10)、4.64-4.51(m,2H,C5H10)、4.34-4.20(m,1H,CHOH)、3.87-3.42(m,2H,NCH2)、3.83(s,6H,OCH3)、3.21-2.93(m,2H,C5H10)、2.33-2.09(m,2H,C5H10)、1.82-1.59(m,2H,C5H10)、1.58-1.40(m,2H,CH2CH3)、1.03(t,3H,CH2CH3)
プロピオン酸エチル10.21g(0.10モル)と、N,N-ジメチルヒドラジンを6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)とをt-ブタノール80mlに溶解させた。この溶液を55℃で15時間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより溶液から溶媒と副生したエタノールを除去し、粘稠性の濃縮物を得た。酢酸エチルを使用して粘稠性の濃縮物を結晶化させた後、この結晶を減圧乾燥することにより、純度97.4%の白色結晶7.58g(収率39.2モル%)を得た。
7.11(s,1H,OH)、4.16-4.07(m,1H,CH)、3.55(s,3H,NCH3)、3.53(s,3H,NCH3)、3.44-3.05(m,2H,NCH2)、2.09-2.01(q,2H,COCH2)、1.62-1.41(m,2H,CHCH2)、1.10-1.05(t,3H,COCH2CH3)、1.05-0.99(t,3H,CH2CH3)
乳酸エチル11.81g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)とをt-ブタノール80mlに溶解させた。この溶液を55℃で13時間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより溶液から溶媒と副生したエタノールを除去し、粘稠性の濃縮物を得た。この粘稠性の濃縮物を、該濃縮物の倍量の酢酸エチルに溶解した。この溶液をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。精製後に得た濃縮物を減圧乾燥することにより、純度99.6%の無色透明な油状物17.57g(収率74.9モル%)を得た。
4-メチル安息香酸エチル16.42g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)とをt-ブタノール80mlに溶解させた。この溶液を55℃で14時間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより、溶液から溶媒と副生したエタノールを除去し、粘稠性の濃縮物を得た。ヘキサン:酢酸エチル=1:1を使用して粘稠性の濃縮物を結晶化させた後、得た結晶を減圧乾燥することにより、純度94.7%の白色結晶17.32g(収率65.5モル%)を得た。
7.74(d,2H,C6H4)、7.12(d,2H,C6H4)、4.24-4.16(m,1H,CHOH)、3.67(d,6H,NCH3)、3.58-3.08(m,2H,NCH2)、2.34(s,3H,C6H4CH3)、1.70-1.42(m,2H,CH2CH3)、1.04(t,3H,CH2CH3)
4-フルオロ安息香酸エチル16.82g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)とを、t-ブタノール80mlに溶解させた。この溶液を55℃で10時間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより、溶液から溶媒と副生したエタノールを除去し、粘稠性の濃縮物を得た。ヘキサン:酢酸エチル=1:1を使用して粘稠性の濃縮物を結晶化させた後、得た結晶を減圧乾燥することにより、純度97.2%の白色結晶17.44g(収率66.6モル%)を得た。
7.87-7.81(m,2H,C6H4)、7.02-6.95(m,2H,C6H4)、4.24-4.16(m,1H,CHOH)、3.67(d,6H,NCH3)、3.59-3.13(m,2H,NCH2)、1.67-1.45(m,2H,CH2CH3)、1.04(t,3H,CH2CH3)
2-メトキシ安息香酸メチル16.62g(0.10モル)と、N,N-ジメチルヒドラジン6.01g(0.10モル)と、1,2-エポキシブタン7.21g(0.10モル)とを、イソプロピルアルコール100mlに溶解させた。室温下において、この溶液を3日間撹拌し、反応させた。反応終了後の溶液を減圧濃縮することにより、溶液中から溶媒と副生したメタノールを除去して、粘稠性の濃縮物を得た。この濃縮物を、該濃縮物の倍量の酢酸エチルに溶解させてから、この溶液をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。精製した後の濃縮物を減圧乾燥することにより、純度96.8%の無色透明な油状物12.12g(収率44.0モル%)を得た。
7.70(d,1H,C6H4)、7.29-7.24(m,1H,C6H4)、6.95-6.85(m,2H,C6H4)、4.27-4.05(m,1H,CHOH)、3.84(s,3H,OCH3)、3.65(d,6H,NCH3)、3.56-3.01(m,2H,NCH2)、1.60-1.48(m,2H,CH2CH3)、1.02(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物A1.00g(3.72ミリモル)と、トリエチルアミン0.07g(0.69ミリモル)とをジクロロメタン10mlに溶解させた。室温下において、この溶液にフェニルイソシアネート0.66g(5.58ミリモル)を添加してから、溶液を室温で5時間攪拌し、反応させて均一な溶液とした。得られた溶液を減圧濃縮させて溶液から溶媒を除去することにより、粘稠性の濃縮物を得た。この濃縮物を酢酸エチルに溶解させて得た溶液を、水で洗浄した後、この洗浄時に分離回収される有機層を減圧濃縮することにより粘稠性の濃縮物を得た。そして、この粘稠性の濃縮物を、該濃縮物の倍量の酢酸エチルに溶解させた。続いて、この濃縮物を、メタノール:酢酸エチル=1:10の溶媒を展開液として使用し、NH-シリカゲル(富士シリシア化学(株)製)により2回のカラム精製を行った。ヘキサンを使用して精製後の濃縮物を結晶化させた後、得た結晶を減圧乾燥することにより、純度99.0%の白色結晶0.67g(収率46.3モル%)を得た。
7.88(d,2H,C6H4)、7.34-7.02(m,5H,C6H5)、6.75(d,2H,C6H4)、5.44-5.39(m,1H,CHOH)、4.07-4.04(m,2H,NCH2) 3.75(s,3H,OCH3)、3.45(d,6H,NCH3)、1.75-1.65(m,2H,CH2CH3)、0.97(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物B6.36g(24.0ミリモル)と、トリエチルアミン0.40g(4.0ミリモル)とをジクロロメタン30mlに溶解させた。室温下において、この溶液にフェニルイソシアネート3.57g(30.0ミリモル)を滴下した。室温下において、滴下が終了した溶液を、10時間攪拌し、反応させた。反応を終了させた溶液を、減圧濃縮することによって溶液中から溶媒を除去し、粘稠性の濃縮物を得た。この濃縮物を酢酸エチルに溶解させた後、この溶液を水で洗浄することによって有機層を得た。有機層を減圧濃縮して、粘稠性の濃縮物を得た。この粘稠性の濃縮物を、該濃縮物の倍量の酢酸エチルに溶解させた。この溶液をメタノール:酢酸エチル=1:10の展開液を使用して、NH-シリカゲル(富士シリシア化学(株)製)により2回のカラム精製を行った。ヘキサンを使用して精製後の濃縮物を結晶化させた後、この結晶を減圧乾燥することにより、純度97.2%の白色結晶7.04g(収率80.4モル%)を得た。
7.41-7.18(m,2H,C6H4)、7.41-7.02(m,5H,C6H5)、6.90-6.84(m,2H,C6H4)、4.92-4.80(m,2H,C5H10)、4.77-4.64(m,2H,C5H10)、4.17-4.04(m,1H,CHO)、4.00-3.60(m,2H,NCH2)、3.84(s,3H,OCH3)、3.12-2.83(m,2H,C5H10)、2.49-2.20(m,2H,C5H10)、1.88-1.71(m,2H,C5H10)、1.71-1.56(m,2H,CH2CH3)、1.01(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物C2.82g(9.04ミリモル)と、トリエチルアミン0.18g(1.78ミリモル)とをジクロロメタン17mlに溶解した。室温下において、この溶液にフェニルイソシアネート1.65g(13.6ミリモル)を添加した後、当該溶液を50℃で10時間攪拌し、反応させた。得られた溶液を、減圧濃縮することによって溶液中から溶媒を除去し、粘稠性の濃縮物を得た。この濃縮物を、メタノール:酢酸エチル=1:10の展開液を使用してNH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。そして、ヘキサンを使用して精製後の濃縮物を結晶化させた後、この結晶を水洗してから乾燥することにより、純度93.2%の白色結晶1.75g(収率49.1モル%)を得た。
7.41-7.25(m,1H,C6H3)、7.41-7.25(m,4H,C6H5)、7.08-7.03(m,1H,C6H5)、6.41-6.33(m,2H,C6H3)、4.17-4.11(m,1H,CHO)、3.83(s,3H,OCH3)、3.77(s,3H,OCH3)、3.37-3.28(m,2H,NCH2)、2.04-2.02(m,3H,NCH3)、1.80-1.69(m,3H,NCH3)、1.28-1.23(m,2H,CH2CH3)、1.02-0.94(m,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物D4.69g(15.0ミリモル)と、トリエチルアミン0.30g(3.0ミリモル)とをジクロロメタン20mlに溶解させた。室温下において、この溶液にフェニルイソシアネート2.43g(20.0ミリモル)を添加してから、当該溶液を室温で12時間攪拌し、反応させた。得られた溶液を、減圧濃縮することによって溶液中から溶媒を除去し、粘稠性の濃縮物を得た。この濃縮物を、メタノール:酢酸エチル=1:10の展開液を使用してNH-シリカゲル(富士シリシア化学(株)製)によってカラム精製を行った。ヘキサンを使用して精製後の濃縮物を結晶化させた後、この結晶を乾燥することにより、純度98.6%の白色結晶5.08g(収率78.1モル%)を得た。
7.41-7.24(m,5H,C6H5)、7.39-6.92(m,4H,C6H4)、4.63-4.51(m,4H,C4H8O)、4.18-4.07(m,1H,CHO)、4.00-3.62(m,2H,NCH2)、3.81(s,3H,OCH3)、3.21-2.94(m,4H,C4H8O)、1.71-1.56(m,2H,CH2CH3)、1.01(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物E8.50g(25.0ミリモル)と、トリエチルアミン0.51g(5.1ミリモル)とをジクロロメタン40mlに溶解させた。室温下において、この溶液にフェニルイソシアネート4.01g(33.0ミリモル)を添加してから、当該溶液を室温で3日間攪拌し、反応させた。反応を終了させた溶液を、減圧濃縮することによって、溶液中から溶媒を除去し、粘稠性の濃縮物を得た。この濃縮物を、メタノール:酢酸エチル=1:10の展開液を使用してNH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。ヘキサンを使用して、精製後の濃縮物を減圧濃縮することにより結晶化させた後、この結晶を洗浄し、乾燥することによって純度98.2%の白色結晶10.91g(収率94.1モル%)を得た。
7.61-7.02(m,5H,C6H5)、7.59-6.84(m,3H,C6H3)、4.82-4.70(m,2H,C5H10)、4.67-4.60(m,2H,C5H10)、4.18-4.04(m,1H,CHO)、3.81-3.60(m,2H,NCH2)、3.74(s,6H,OCH3)、3.12-2.93(m,2H,C5H10)、2.55-2.32(m,2H,C5H10)、1.88-1.73(m,2H,C5H10)、1.67-1.56(m,2H,CH2CH3)、1.03(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物B6.16g(0.020モル)と、無水酢酸2.98g(0.028モル)と、をメチルエチルケトン19mLに溶解させた。この溶液を、80℃で6時間攪拌し、反応させた。反応を終了させた溶液を、減圧濃縮により溶媒および酢酸を除去し、粘調性の濃縮物を得た。この濃縮物を酢酸エチルに溶解させ、水で抽出した後、水層を減圧濃縮して、粘調性の濃縮物を得た。この濃縮物を酢酸エチルで溶媒交換した後、濃縮し、得られたスラリーを酢酸エチルで洗浄した。得られた有機層を濃縮して、ヘキサンを使用して結晶化させた後、減圧乾燥して純度99.2%の白色結晶3.74g(収率53.2モル%)を得た。
7.39-7.35(m,1H,C6H4)、7.24-7.18(m,1H,C6H4)、6.91-6.84(m,2H,C6H4)、5.67-5.65(m,1H,CHO)、4.98-4.90(m,2H,NCH2)、3.84(s,3H,OCH3)、3.78-3.74(m,1H,C5H10)、3.44-3.36(m,1H,C5H10)、3.14-3.06(m,1H,C5H10)、2.92-2.81(m,1H,C5H10)、2.39-2.26(m,2H,C5H10)、2.05(s,3H,CH3CO)、1.83-1.36(m,6H,C5H10+CH2CH3)、0.96(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物B6.16g(0.020モル)と、無水安息香酸6.53g(0.028モル)とを、メチルエチルケトン15mLに溶解させた。この溶液を、80℃で2時間攪拌し、反応させた。反応を終了させた溶液から、減圧濃縮により溶媒を除去し、粘調性の濃縮物を得た。この濃縮物を、濃縮物の倍量の酢酸エチルに溶解させ、メタノール:酢酸エチル=1:10の展開液を使用してNH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。ヘキサンを使用して、精製後の濃縮物を再結晶化させた後、減圧乾燥して純度99.2%の白色結晶7.94g(収率75.9モル%)を得た。
8.05-8.02(m,2H,C6H5)、7.61-7.55(m,1H,C6H5)、7.48-7.38(m,3H,C5H10+C6H4)、7.27-7.19(m,1H,C6H4)、6.92-6.86(m,2H,C6H4)、5.95-5.93(m,1H,CHO)、5.14-4.94(m,2H,NCH2)、3.87(s,3H,OCH3)、3.80-3.76(m,1H,C5H10)、3.64-3.57(m,1H,C5H10)、3.15-3.14(m,1H,C5H10)、2.92-2.91(m,1H,C5H10)、2.39-2.27(m,2H,C5H10)、1.94-1.35(m,6H,C5H10+CH2CH3)、1.03(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物B3.06g(0.010モル)と、ピリジン1.63g(0.020モル)とを、ジクロロメタン10mLに溶解させ、さらにピバル酸クロリド1.81g(0.015モル)を氷冷下で滴下した。滴下終了後、当該溶液を50℃で7時間攪拌し、反応させた。反応を終了させた溶液から、減圧濃縮により溶媒を除去し、粘調性の濃縮物を得た。この濃縮物をジクロロメタンに溶解させ、水で抽出洗浄した。得られた有機層を減圧濃縮し、粘調性の濃縮物を得た。この濃縮物を、濃縮物の倍量の酢酸エチルに溶解させ、ヘキサンを使用して結晶化させた後、減圧乾燥して純度99.8%の白色結晶2.71g(収率69.4モル%)を得た。
7.38-7.35(m,1H,C6H4)、7.27-7.18(m,1H,C6H4)、6.91-6.85(m,2H,C6H4)、5.67-5.65(m,1H,CHO)、5.07-4.87(m,2H,NCH2)、3.85(s,3H,OCH3)、3.71-3.67(m,1H,C5H10)、3.45-3.37(m,1H,C5
H10)、3.18-3.106(m,1H,C5H10)、2.89-2.81(m,1H,C5H10)、2.38-2.25(m,2H,C5H10)、1.82-1.41(m,6H,C5H10+CH2CH3)、1.20(s,9H,C(CH3)3)、0.96(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物J1.74g(0.0065モル)と、ピリジン5.94g(0.075モル)とを、ジクロロメタン15mLに溶解させ、さらにピバル酸クロリド3.39g(0.028モル)を氷冷下で滴下した。滴下終了後、当該溶液を室温で70時間攪拌し、反応させた。反応を終了させた溶液から、減圧濃縮により溶媒を除去し、粘調性の濃縮物を得た。この濃縮物を、濃縮物の倍量の酢酸エチルに溶解させ、メタノール:酢酸エチル=1:10の展開液を用いてNH-シリカゲル(富士シリシア化学(株)製)によりカラム精製を行った。精製した濃縮物を、ヘキサンを使用して再結晶化させた後、減圧乾燥して純度98.1%の白色結晶0.82g(収率36.0モル%)を得た。
7.49-7.43(m,2H,C6H4)、7.12-6.98(m,2H,C6H4)、5.61-5.53(m,1H,CHO)、4.92-4.70(m,2H,NCH2)、3.95(s,3H,OCH3)、3.71(s,2H,NCH3)、3.40(s,2H,NCH3)、1.80-1.60(m,2H,CH2CH3)、1.21(s,9H,C(CH3)3)、0.96(t,3H,CH2CH3)
上記の方法で合成した水酸基含有アミンイミド化合物B 4.56g(0.0149モル)と、ピリジン1.976gとを、酢酸エチル60mLに溶解させ、さらに2-メトキシベンゾイルクロリド7.76g(0.0455モル)を氷冷下で滴下した。滴下終了後、当該溶液を50℃で7時間加熱撹拌して、反応させた。この溶液を冷却した後、重曹水と酢酸エチルを加え、析出した固体を溶解させた。得られた有機層を水洗いし、硫酸マグネシウムで乾燥させた。乾燥剤をろ別した後、減圧濃縮して得られた残渣を酢酸エチルで再結晶化させて、1-(2-メトキシベンゾイル)アミノ-1-[2-(2-メトキシベンゾイルオキシ)ブチル]ピペリジニウム分子内塩の白色結晶4.15g(収率63.2モル%)を得た。
δ(ppm) 7.76(d,1H,J=2.6Hz)、7.516-7.451(m,1H)、7.40(dd,1H,J=2、8Hz)、7.26-7.19(m,1H)、7.02-6.96(m,2H)、5.87(q,1H,J=6Hz)、5.05(dd,1H,J=1、14Hz)、4.95(br.d,1H)、3.87(d,7H,J=5Hz)、3.59(q,1H,J=7.7Hz)、3.12(dt,1H,J=9、11Hz)、2.95(dt,1H,J=3、12Hz)、2.48-2.22(m,1H)、1.97-1.84(m,2H)、1.82-1.71(m,1H)、1.80-1.52(m,3H)、1.50-1.31(m,1H)、1.04(t,3H,J=8Hz)
上記の方法で合成した水酸基含有アミンイミド化合物B 4.6g(0.015モル)と、ピリジン2.34gとを、酢酸エチル60mLに溶解させ、さらに2-メチルベンゾイルクロリド4.85g(0.0314モル)を氷冷下で滴下した。滴下終了後、当該溶液を50℃で7時間加熱撹拌し、反応させた。この溶液を冷却した後、重曹水と酢酸エチルを加え、析出した固体を溶解させた。得られた有機層を水洗いし、硫酸マグネシウムで乾燥させた。乾燥剤をろ別した後、減圧濃縮して得られた残渣を、酢酸エチル/ヘキサン混合溶媒で再結晶化させて、1-(2-メトキシベンゾイル)アミノ-1-[2-(2-メチルベンゾイルオキシ)ブチル]ピペリジニウム分子内塩の白色結晶3.62g(収率56.7モル%)を得た。
δ(ppm) 7.89(d,1H,J=9Hz)、7.45-7.38(m,2H)、7.27-7.19(m,3H)、6.92-6.86(m,2H)、5.90(q,1H,J=6Hz)、5.10(dd,1H,J=1.4、14Hz)、4.98(br.d,1H)、3.87(s,3H)、3.79(br.d,1H)、3.57(q,1H,J=7Hz)、3.11(dt,1H,J=3、12Hz)、2.91(dt,1H,J=3、12Hz)、2.61(s,3H)、2.45-2.20(m,2H)、2.00-1.80(m,2H)、1.80-1.50(m,3H)、1.50-1.30(m,1H)、1.05(t,3H,J=7.5Hz)
以下の各実施例および比較例で使用したエポキシ樹脂組成物は、下記の原料を使用した。
各原料を混合するにあたり、酸無水物を、エポキシ樹脂と酸無水物の当量比が1になるように添加した。また、エポキシ樹脂100質量部に対して、アミンイミド化合物を「その分子量の0.037倍質量部」を添加した。酸無水物とアミンイミド化合物とを攪拌容器に入れ、これを25℃で8時間、撹拌混合することにより、アミンイミド化合物を酸無水物に溶解させた。各原料を溶解させた溶液に、所定量のエポキシ樹脂を加え、さらに25℃で1時間攪拌混合することによりエポキシ樹脂組成物を調製した。
エポキシ樹脂(エピクロン830S 大日本インキ化学工業株式会社):100質量部
酸無水物(リカシッドMH-700 新日本理化株式会社):93質量部
各実施例および比較例に準じた所定のアミンイミド化合物:(分子量×0.037)質量部
エポキシ樹脂組成物を、2枚のNaCl結晶板(厚み5mm)の間に挟んだサンプルを用意した。このサンプルを、所定の温度(90℃)で2時間熱処理した前後の赤外線透過スペクトルを、FT-IR測定装置によって測定した。本測定で得られたスペクトルに基づき、エポキシ基の逆対称環伸縮に由来する吸収ピーク高さ(910cm-1付近)を、ベンゼン環の環内C-C伸縮に由来する吸収ピーク高さ(1600cm-1付近)で除して規格化した。そして、熱処理によるエポキシ基由来のピークの減少度合いからエポキシ基の反応率を算出した。
このエポキシ転化率は100%に近づくほど、エポキシ基が消費されて硬化が進んだことを意味する。そして、以下の3段階で評価した。
当該エポキシ転化率が90~100%の場合、硬化性が高く極めて良好である(○)とし、当該エポキシ転化率が50~90%未満の場合、硬化性が良好である(△)とし、当該エポキシ転化率が0~50%未満の場合、硬化性が劣る(×)とした。
エポキシ樹脂組成物の、室温での粘度をη1、室温に24時間放置した後の当該エポキシ樹脂組成物の粘度をη2とした場合、η2/η1で算出される値を粘度変化として求めた。そして、以下の3段階で評価した。
当該η2/η1が、1.5未満である場合を保存安定性が極めて良好である(○)とし、当該η2/η1が1.5以上から2.0未満の間にある場合を保存安定性が良好である(△)とし、当該η2/η1が2.0以上である場合を、保安安定性が劣る(×)、とした。
エポキシ樹脂組成物の粘度を、E型粘度計(東機産業製 RC-500)により25℃、3分の条件で測定し、この測定値を、エポキシ樹脂組成物の初期粘度(mPa・s)とした。
アミンイミド化合物のN-N結合エネルギーを、密度汎関数法として知られる「B3LYP法」によって算出した。全ての計算は、Gaussian 03 Rev.C.02を使用して行った。ここで使用した基底関数は、全ての元素に対してcc-pVDZとした。
具体的には、前述のスキームAで表される解離反応を想定し、解離前後の反応物および生成物の構造の最適化と、全エネルギー計算を行った。そして、N-N結合エネルギーは、解離後の生成物の全エネルギーの和から解離前のアミンイミド化合物の全エネルギーを引くことで推算した。
合成実施例1で合成したアミンイミド化合物1を使用してエポキシ樹脂組成物を調製し、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例2で合成したアミンイミド化合物2を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例3で合成したアミンイミド化合物3を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例4で合成したアミンイミド化合物4を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例5で合成したアミンイミド化合物5を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例6で合成したアミンイミド化合物6を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例7で合成したアミンイミド化合物7を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例8で合成したアミンイミド化合物8を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、合成実施例9で合成したアミンイミド化合物9を使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Aを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Bを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Fを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Gを含むエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Hを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Iを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Cを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
実施例1で用いたアミンイミド化合物の代わりに、水酸基含有アミンイミド化合物Jを使用してエポキシ樹脂組成物を調製した以外は実施例1と同様に、その諸特性を調べた。
Claims (15)
- イオン重合性化合物を硬化させる潜在性硬化剤であって、
水酸基を有しないアミンイミド化合物を含み、
前記アミンイミド化合物の、B3LYP密度汎関数法により求められるN-N結合エネルギーが100~210kJ/molである、潜在性硬化剤。 - 前記アミンイミド化合物のN-N結合エネルギーが、100~195kJ/molである、請求項1記載の潜在性硬化剤。
- 前記一般式(1)中のR1が、未置換または置換基を有する、アリール基またはアリーロキシ基である、請求項3記載の潜在性硬化剤。
- 前記一般式(1)中のR2とR3が相互に連結して、炭素数が4~8の2価の飽和炭化水素基、-(CH2)nO(CH2)n-または-(CH2)nNR11(CH2)n-(いずれも、nは2~4の自然数を表わし;R11は任意の有機基を表す)を表す、請求項3記載の潜在性硬化剤。
- 前記一般式(1)中のR5がカルボニル基を有する有機基であって、
前記カルボニル基の炭素原子が、前記一般式(1)の酸素原子と結合している、請求項3記載の潜在性硬化剤。 - 前記一般式(1)中のR5がアシル基である、請求項6記載の潜在性硬化剤。
- (a)請求項1記載の潜在性硬化剤と、(b)エポキシ樹脂とを含む、エポキシ樹脂組成物。
- (c)酸無水物をさらに含む、請求項8記載のエポキシ樹脂組成物。
- 前記エポキシ樹脂組成物において、
酸無水基/エポキシ基で表される当量比が0.8~1.2であり、かつ、
アミンイミド基/エポキシ基のモル比が0.008~0.152である、請求項9記載のエポキシ樹脂組成物。 - 請求項8記載のエポキシ樹脂組成物を含む、シール剤。
- 有機EL素子が配置された表示基板と、
前記表示基板と対になる対向基板と、
前記表示基板と対向基板との間に介在し、前記有機EL素子を封止する請求項11記載のシール剤の硬化物と、
を含む有機ELディスプレイ。 - 前記一般式(2)中のR6は、未置換のアリール基、アルキル基を有するアリール基、またはアルコキシ基を有するアリール基である、請求項13記載のアミンイミド化合物。
- 前記一般式(2)中のR7とR8が相互に連結して、炭素数が4~8の2価の飽和炭化水素基、-(CH2)nO(CH2)n-または-(CH2)nNR12(CH2)n-(いずれも、nは2~4の自然数を表わし;R12は任意の有機基を表す)を表す、請求項13記載のアミンイミド化合物。
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EP08868547A EP2199313A1 (en) | 2007-12-28 | 2008-12-26 | Latent curing agents, epoxy resin compositions conating the same, sealing materials, and organic el displays |
US12/681,271 US8466238B2 (en) | 2007-12-28 | 2008-12-26 | Latent curing agents, epoxy resin compositions containing the same, sealing materials, and organic EL displays |
CN2008801224445A CN101910240B (zh) | 2007-12-28 | 2008-12-26 | 潜在性固化剂、含有该潜在性固化剂的环氧树脂组合物、密封剂以及有机el显示器 |
KR1020107007796A KR101180201B1 (ko) | 2007-12-28 | 2008-12-26 | 잠재성 경화제, 그것을 포함하는 에폭시 수지 조성물, 실링재 및 유기 el 디스플레이 |
HK11103593.2A HK1149285A1 (en) | 2007-12-28 | 2011-04-08 | Latent curing agents, epoxy resin compositions conating the same, sealing materials, and organic el displays |
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JP2011192567A (ja) * | 2010-03-16 | 2011-09-29 | Rohm Co Ltd | 有機el装置 |
JP2012131936A (ja) * | 2010-12-22 | 2012-07-12 | Three Bond Co Ltd | アミンイミド化合物、およびそれを用いた組成物およびその硬化方法 |
JP2014105286A (ja) * | 2012-11-28 | 2014-06-09 | Nippon Kayaku Co Ltd | 樹脂組成物及びその硬化物(2) |
WO2021044884A1 (ja) * | 2019-09-06 | 2021-03-11 | 積水化学工業株式会社 | 硬化性樹脂組成物、液晶表示素子用シール剤、上下導通材料、及び、液晶表示素子 |
JP2021512973A (ja) * | 2018-02-02 | 2021-05-20 | ディディピー スペシャリティ エレクトロニック マテリアルズ ユーエス エルエルシー | 車両窓を設置するために有用な接着剤 |
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US20140150970A1 (en) | 2010-11-19 | 2014-06-05 | Ppg Industries Ohio, Inc. | Structural adhesive compositions |
CN103889535B (zh) * | 2011-08-10 | 2016-06-01 | N·哈马尔 | 过滤设备和水过滤系统及方法 |
US10351661B2 (en) * | 2015-12-10 | 2019-07-16 | Ppg Industries Ohio, Inc. | Method for producing an aminimide |
CA3007951C (en) * | 2015-12-10 | 2021-02-16 | Ppg Industries Ohio, Inc. | Aminimide compositions |
US10377928B2 (en) | 2015-12-10 | 2019-08-13 | Ppg Industries Ohio, Inc. | Structural adhesive compositions |
JP6447557B2 (ja) * | 2016-03-24 | 2019-01-09 | 日亜化学工業株式会社 | 発光装置の製造方法 |
KR102257195B1 (ko) | 2018-11-08 | 2021-05-26 | 주식회사 엘지화학 | 액정 배향제 조성물, 이를 이용한 액정 배향막의 제조 방법, 이를 이용한 액정 배향막 및 액정표시소자 |
KR102461121B1 (ko) | 2019-02-21 | 2022-10-28 | 주식회사 엘지화학 | 액정 배향제 조성물, 이를 이용한 액정 배향막의 제조 방법, 이를 이용한 액정 배향막 및 액정표시소자 |
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JP2011192567A (ja) * | 2010-03-16 | 2011-09-29 | Rohm Co Ltd | 有機el装置 |
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JP2021512973A (ja) * | 2018-02-02 | 2021-05-20 | ディディピー スペシャリティ エレクトロニック マテリアルズ ユーエス エルエルシー | 車両窓を設置するために有用な接着剤 |
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EP2199313A1 (en) | 2010-06-23 |
TW200938561A (en) | 2009-09-16 |
US20100253213A1 (en) | 2010-10-07 |
CN101910240B (zh) | 2012-10-03 |
KR101180201B1 (ko) | 2012-09-05 |
JPWO2009084229A1 (ja) | 2011-05-12 |
KR20100066551A (ko) | 2010-06-17 |
HK1149285A1 (en) | 2011-09-30 |
TWI423997B (zh) | 2014-01-21 |
JP5486927B2 (ja) | 2014-05-07 |
US8466238B2 (en) | 2013-06-18 |
CN101910240A (zh) | 2010-12-08 |
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