WO2016117295A1 - 包接化合物の製造方法 - Google Patents
包接化合物の製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4223—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof aromatic
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
- C07C65/03—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups monocyclic and having all hydroxy or O-metal groups bound to the ring
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/56—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
- C07D233/58—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring nitrogen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/64—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine
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- 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
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
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- 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
- C08G59/56—Amines together with other curing agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/13—Crystalline forms, e.g. polymorphs
Definitions
- the present invention relates to a novel method for producing an inclusion compound.
- Imidazole compounds are widely used as raw materials for medicines and agricultural chemicals, or as metal surface treatment agents, epoxy resin curing agents, and curing accelerators.
- an imidazole compound When used as a curing agent or curing accelerator for an epoxy resin, it can be cured at a low temperature and in a short time, and the cured product has good advantages such as mechanical properties and electrical properties. There was a problem that storage stability was lowered. Thus, attempts have been made so far to make it latent by inclusion of an imidazole compound, and the following methods are known as methods for producing an inclusion compound containing an imidazole compound.
- Patent Document 1 discloses 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane (hereinafter also referred to as TEP) and 2-phenyl-4-methyl-5-hydroxymethylimidazole (hereinafter also referred to as 2P4MHZ). ), The TEP and 2P4MHZ are suspended in ethyl acetate, heated and refluxed for 3 hours, and then cooled to room temperature, whereby crystals of the clathrate compound are obtained. .
- TEP 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane
- 2P4MHZ 2-phenyl-4-methyl-5-hydroxymethylimidazole
- Patent Document 2 discloses a production method thereof in which a 2-nitroisophthalic acid (hereinafter, also referred to as NIPA) solution in a 2- It is described that a clathrate crystal can be obtained by adding a methanol solution of ethyl-4-methylimidazole (hereinafter, also referred to as 2E4MZ) with stirring under heating and refluxing and cooling at room temperature overnight after heating. ing.
- NIPA 2-nitroisophthalic acid
- 2E4MZ methanol solution of ethyl-4-methylimidazole
- Patent Document 3 discloses (A) an epoxy resin and (B) an epoxy resin for encapsulating a semiconductor, which contains an inclusion complex containing 5-hydroxyisophthalic acid and 2-ethyl-4-methylimidazole.
- a 2E4MZ ethyl acetate solution is dropped into a mixture of 5-hydroxyisophthalic acid (hereinafter also referred to as HIPA) and ethyl acetate while heating and refluxed for 2 hours to obtain inclusion complex crystals. It is described.
- HIPA 5-hydroxyisophthalic acid
- An object of the present invention is to provide a novel and industrially advantageous production method of an inclusion compound that can obtain a thermodynamically stable inclusion compound crystal with high purity.
- the present inventors have mixed and heated a mixed solvent containing a protic solvent, TEP or specific isophthalic acid, and an imidazole compound.
- the inventors have found that a thermodynamically stable crystalline clathrate compound can be obtained as compared with the clathrate compound obtained by the production method, and the present invention has been completed.
- the present invention (1) A method for producing an inclusion compound comprising a mixing step of mixing the following component (A), component (B), and component (C), and a heating step; (A) Mixed solvent containing protic solvent (B) At least one selected from the group consisting of 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 5-hydroxyisophthalic acid, and 5-nitroisophthalic acid Species (C) Formula (I) [Wherein, R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an aralkyl group, or a cyanoethyl group, and R 2 -R 4 represent a hydrogen atom, a nitro group, a halogen atom, or a C1-C20 alkyl group.
- a method for producing an inclusion compound by crystal conversion comprising a mixing step of mixing at least one selected from the group consisting of imidazole compounds represented by (2) the following component (A) and component (D), and a heating step: , (A) Mixed solvent containing protic solvent (D) At least one selected from the group consisting of 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 5-hydroxyisophthalic acid, and 5-nitroisophthalic acid
- a clathrate comprising at least one selected from the group consisting of a species and an imidazole compound represented by the following formula (I): [Wherein, R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an aralkyl group, or a cyanoethyl group, and R 2 -R 4
- the imidazole compound represented by the formula (I) is 2-phenyl-4-methyl-5-hydroxymethylimidazole or 2-ethyl-4-methylimidazole (1) or (2)
- the production method according to the present invention is a method having a high industrial utility value because a high-purity inclusion compound can be obtained even when a low-grade raw material is used. Since the clathrate compound obtained by the production method according to the present invention has a more stable crystal form than the clathrate compound obtained by the conventional production method, excellent curing when used as a curing agent or curing accelerator for epoxy resin Demonstrate the characteristics.
- the production method of the clathrate compound of the present invention is not particularly limited as long as it includes a mixing step of mixing the following component (A), component (B) and component (C) and a heating step. Absent.
- C At least one selected from the group consisting of imidazole compounds represented by formula (I)
- an inclusion compound is a compound composed of two or more chemical species that can exist stably alone, and one of these chemical species creates a molecular-scale space, and the shape and dimensions in that space.
- the host and guest are bonded by an interaction other than a covalent bond such as a hydrogen bond, van der Waals force, or ionic bond. It can be said that an ionic crystal or salt structure is formed in the case of an ion-binding clathrate compound.
- Component (A) of the present invention is not particularly limited as long as at least one solvent is a mixed solvent, but is a mixed solvent containing a first solvent and a second solvent.
- the first solvent is at least one selected from the group consisting of water and methanol
- the second solvent is an alcohol solvent, an ester solvent, a ketone solvent, an aliphatic hydrocarbon solvent, and an aromatic solvent. It is at least one selected from the group consisting of hydrocarbon solvents.
- the solvent used for the second solvent include alcohol solvents such as methanol and 2-propanol; ester solvents such as ethyl acetate and butyl acetate; ketone solvents such as methyl ethyl ketone and acetone; hexane and heptane And aliphatic hydrocarbon solvents such as cyclohexane; aromatic hydrocarbon solvents such as benzene, toluene and xylene.
- alcohol solvents such as methanol and 2-propanol
- ester solvents such as ethyl acetate and butyl acetate
- ketone solvents such as methyl ethyl ketone and acetone
- aliphatic hydrocarbon solvents such as cyclohexane
- aromatic hydrocarbon solvents such as benzene, toluene and xylene.
- Preferred combinations of the first solvent and the second solvent include water and methanol, water and methyl ethyl ketone, methanol and methyl ethyl ketone, methanol and ethyl acetate, water and ethyl acetate, water and hexane, and the like.
- the first solvent and the second solvent are different solvents, and the solubility of the host compound and the guest compound in the solvent, the crystallinity of the clathrate compound to be produced, the miscibility of the solvents, etc. Combinations and ratios of solvents can be selected. However, when the first solvent is methanol, it is preferable to select a solvent other than the alcohol solvent as the second solvent.
- the ratio of the first solvent to the second solvent in the mixed solvent is not particularly limited, but the mass ratio of the first solvent / the second solvent is 1/99 to 99/99 at the start of the reaction. 1, preferably 2/98 to 80/20, more preferably 2/98 to 70/30.
- this mixed solvent is used to carry out the reaction while heating and stirring the reaction solution.
- the amount of the mixed solvent used varies depending on the type and ratio of the mixed solvent and is not particularly limited. However, the amount of the mixed solvent is 1 part by weight of the total amount of the component (B) and the component (C) or the component (D). The amount is 0.5 to 50 parts by weight with respect to 1 part by weight.
- the host compound is at least one component (B) selected from the group consisting of 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 5-hydroxyisophthalic acid, and 5-nitroisophthalic acid.
- component (B) is a compound having a carboxylic acid group
- the hydrogen bond is stronger than that of a compound having a hydroxyl group, so that the clathrate compound has a strong crystal structure. Since the clathrate compound obtained has different thermal properties depending on the host compound, it can be appropriately selected depending on the use mode.
- the guest compound is at least one component (C) selected from the group consisting of imidazole compounds represented by the following formula (I).
- R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an aralkyl group, or a cyanoethyl group
- R 2 -R 4 represent a hydrogen atom, a nitro group, a halogen atom, or a C1-C20 alkyl group.
- Examples of the C1-C10 alkyl group of R 1 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a cyclopropyl group, a butyl group, an isobutyl group, a s-butyl group, a t-butyl group, a cyclobutyl group, and a cyclopropylmethyl group.
- Pentyl group isopentyl group, 2-methylbutyl group, neopentyl group, 1-ethylpropyl group, hexyl group, isohexyl group, 4-methylpentyl group, 3-methylpentyl group, 2-methylpentyl group, 1-methylpentyl group 3,3-dimethylbutyl group, 2,2-dimethylbutyl group, 1,1-dimethylbutyl group, 1,2-dimethylbutyl group, 1,3-dimethylbutyl group, 2,3-dimethylbutyl group, 1 -Ethylbutyl group, 2-ethylbutyl group, octyl group, nonyl group, decyl group and the like.
- Examples of the C1 to C20 alkyl group of R 2 to R 4 include the undecyl group, lauryl group, palmityl group, stearyl group and the like in addition to those exemplified as the alkyl group of R 1 .
- Examples of the C1-C20 alkyl group substituted with the hydroxy group of R 2 to R 4 include a hydroxymethyl group and a hydroxyethyl group.
- the acyl groups of C1 to C20 of R 2 to R 4 include formyl group; acetyl group, propionyl group, butyryl group, isobutyryl group, valeryl group, isovaleryl group, pivaloyl group, hexanoyl group, octanoyl group, decanoyl group, lauroyl group Alkyl substituted acyl groups such as acryloyl group and methacryloyl group; aryl substituted acyl groups such as benzoyl group, toluoyl group and naphthoyl group; cyclohexane such as cyclohexylcarbonyl group; An alkyl-substituted acyl group; an acyl group having a halogen atom such as a chloroformyl group;
- the aryl group of R 2 to R 4 means a monocyclic or polycyclic aryl group.
- a partially saturated group is included in addition to the fully unsaturated group.
- examples thereof include C6-10 aryl groups such as phenyl group, naphthyl group, azulenyl group, indenyl group, indanyl group and tetralinyl group.
- the aralkyl group of R 2 to R 4 is a group in which the aryl group and the alkyl group are bonded, and includes a benzyl group, a phenethyl group, a 3-phenyl-n-propyl group, a 1-phenyl-n-hexyl group, a naphthalene- Examples include C6-10 aryl C1-6 alkyl groups such as 1-ylmethyl group, naphthalen-2-ylethyl group, 1-naphthalen-2-yl-n-propyl group, and inden-1-ylmethyl group.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- the alkyl group, aryl group, aralkyl group, and acyl group of R 1 to R 4 may have a substituent, and examples of the substituent include an alkyl group, a hydroxy group, an alkoxy group, an aryl group, an aralkyl group, and a halogen atom. Can be mentioned. Specific examples of these groups as substituents include the same groups as described above.
- the alkyl group part of an alkoxy group the same thing as the said alkyl group can be mentioned.
- imidazole compound examples include imidazole, 1-methylimidazole, 2-methylimidazole, 3-methylimidazole, 4-methylimidazole, 5-methylimidazole, 1-ethylimidazole, 2-ethylimidazole, 3-ethylimidazole, 4-ethylimidazole, 5-ethylimidazole, 1-n-propylimidazole, 2-n-propylimidazole, 1-isopropylimidazole, 2-isopropylimidazole, 1-n-butylimidazole, 2-n-butylimidazole, 1- Isobutylimidazole, 2-isobutylimidazole, 2-undecyl-1H-imidazole, 2-heptadecyl-1H-imidazole, 1,2-dimethylimidazole, 1,3-dimethylimidazole, 2, -Dimethylimidazole, 2-ethyl,
- At least one imidazole compound selected from the group consisting of 2-ethyl-4-methylimidazole and 2-phenyl-4-methyl-5-hydroxymethylimidazole is more preferable.
- the mixed solvent described in Component (A), the compound described in Component (B) (hereinafter also referred to as host compound), and the compound described in Component (C) (hereinafter also referred to as guest compound). ) Is not particularly limited, and examples thereof include the following methods.
- the host compound and guest compound are dissolved or suspended in the mixed solvent, but it is preferable that both are dissolved in the solvent.
- the entire amount does not need to be dissolved in the solvent, and at least a part of the amount only needs to be dissolved in the solvent.
- a guest compound is solid, after melting, you may mix with a guest compound and / or a mixed solvent.
- the mixing ratio of the host compound and the guest compound at the time of production of the clathrate compound is preferably 0.1 to 10 mol of the guest compound with respect to 1 mol of the host compound, 0.5 to 5.0 More preferably, it is a mole.
- Heating process The heating process of the present invention is not particularly limited as long as a heating process is included somewhere in the manufacturing process, but it is preferable to perform the heating process during and / or after the mixing process.
- the heating temperature varies depending on the type of solvent used, it is, for example, in the range of 40 to 150 ° C., and preferably heated to reflux.
- the heating time is 5 minutes to 12 hours, preferably 1 to 3 hours.
- the production method of the clathrate compound of the present invention may have other steps before and after any of the mixing step or the heating step as long as the effects of the present invention are not impaired.
- steps for example, Cooling the mixture after the heating step; Filtering the cooled mixture; Drying the substance obtained by filtration to obtain clathrate crystals;
- the host compound or guest compound is a solid, a step of pulverizing the host compound or guest compound before the mixing step; Etc.
- the particle size of the host compound or guest compound is not particularly limited as long as the effects of the present invention are obtained, but the average particle size is preferably 50 ⁇ m or less, and more preferably 20 ⁇ m or less.
- the ratio of the host compound and guest compound contained in the clathrate compound is not particularly limited as long as the clathrate compound can be formed, but the guest compound should be 0.1 to 10 mol relative to 1 mol of the host compound. Is more preferable, and more preferably 0.5 to 5.0 mol.
- the third component is preferably 40 mol% or less, more preferably 10 mol% or less, particularly not containing the third component, based on the total amount of the clathrate compound. Most preferred.
- the inclusion compound which consists of three or more components can also be obtained by making 2 or more types of guest compounds react with a host compound.
- a method for obtaining an equivalent of the clathrate compound obtained by the above-described method by crystal-transforming the clathrate compound obtained by a known production method is also included in the present invention.
- the manufacturing method of the clathrate compound in that case will not be restrict
- A Mixed solvent containing protic solvent
- D At least one selected from the group consisting of 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane, 5-hydroxyisophthalic acid, and 5-nitroisophthalic acid
- An inclusion compound comprising at least one selected from the group consisting of a species and an imidazole compound represented by the following formula (I):
- R 1 represents a hydrogen atom, a C1-C10 alkyl group, an aryl group, an aralkyl group, or a cyanoethyl group
- R 2 -R 4 represent a hydrogen atom, a nitro group, a halogen atom, or a C1-C20 alkyl group.
- the component (A) is as described above.
- the inclusion compound described in the component (D) can be produced using a known method. For example, after adding a host compound and a guest compound to a solvent, heat treatment or heat reflux treatment with stirring as necessary, and then precipitating or dissolving the host compound and guest compound in the solvent Examples of the method include a crystallization method in which the solvent is cooled and crystals are precipitated, but is not limited to these methods.
- the imidazole compound contained in the said component (D) is as above-mentioned.
- the mixing step and the heating step can be performed in the same manner as the mixing step and the heating step described above.
- the clathrate compound produced by the method according to the present invention is used for curing an epoxy resin, for example, an epoxy resin adhesive, a semiconductor encapsulant, a laminate for a printed wiring board, a varnish, a powder coating, an ink, a fiber reinforced It can be suitably used for applications such as composite materials.
- an epoxy resin for example, an epoxy resin adhesive, a semiconductor encapsulant, a laminate for a printed wiring board, a varnish, a powder coating, an ink, a fiber reinforced It can be suitably used for applications such as composite materials.
- thermogravimetry and differential scanning calorimetry uses thermogravimetry (product name: TGA-DSC1, manufactured by METTLER TOLEDO) to place about 3 mg of crystals in an aluminum container and raise the temperature under a nitrogen purge (flow rate 50 mL / min). The measurement was performed at a rate of 20 ° C./min and a temperature range of 30 to 500 ° C. As a result, the release temperature of 2P4MHZ of the resulting clathrate was 231 ° C. The same measurement results were obtained for Examples 2 to 8.
- Example 9 The amount of the clathrate compound (crystal A) and the mixed solvent shown in Table 2 were added to the flask, and the mixture was heated to reflux with stirring for 3 hours. After cooling, filtration and drying were performed to obtain an inclusion compound (crystal B). The TG-DSC of each clathrate compound was measured, and the same result as in Example 1 was obtained.
- Example 12 The TG-DSC of the clathrate compound obtained in Example 12 was measured using the same apparatus and conditions as in Example 1. As a result, the release temperature of 2E4MZ of the obtained inclusion compound was 189 ° C. The same measurement results were obtained for Examples 13 to 16.
- Example 17 to [Example 23]
- the amount of clathrate compound (crystal C) and mixed solvent shown in Table 4 were added to the flask, and the mixture was refluxed with heating for 3 hours while stirring. After cooling, filtration and drying were performed to obtain an inclusion compound (crystal D). TG-DSC of each clathrate compound was measured, and the same result as in Example 12 was obtained.
- Example 24 Low-grade TEP, 2P4MHZ and a mixed solvent containing a large amount of sodium components in the amounts shown in Table 5 were added, and the mixture was refluxed with heating for 3 hours while stirring. After cooling, filtration and drying were performed to obtain an inclusion compound.
- Table 5 shows the results of measuring the concentration of sodium element contained in each component with ICP-AES (Inductively Coupled Plasma Atomic Emission Spectrometer). From this result, the sodium element contained in the low-grade TEP is eluted in the filtrate after filtration and does not remain in the resulting inclusion compound. Therefore, when the production method of the present invention is used, the low-grade raw material is used. However, it was found that a high purity inclusion compound can be obtained.
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Abstract
Description
本願は、2015年1月19日に出願された日本国特許出願第2015-7987号に対し優先権を主張し、その内容をここに援用する。
(1)下記成分(A)、成分(B)、及び成分(C)を混合する混合工程と、加熱工程とを含む包接化合物の製造方法、
(A)プロトン性溶媒を含む混合溶媒
(B)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種
(C)下記式(I)
で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種
(2)下記成分(A)及び成分(D)を混合する混合工程と、加熱工程とを含む、結晶変換による包接化合物の製造方法、
(A)プロトン性溶媒を含む混合溶媒
(D)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種及び下記式(I)で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種とを含む包接化合物
(3)前記混合溶媒が、水及びメタノールからなる群から選ばれる少なくとも1種である第一の溶媒と、アルコール系溶媒、エステル系溶媒、ケトン系溶媒、脂肪族炭化水素系溶媒、及び芳香族炭化水素系溶媒からなる群から選ばれる少なくとも1種であり、かつ前記第一の溶媒とは異なる種類の溶媒である第二の溶媒と、を含む(1)又は(2)に記載の製造方法、及び
(4)前記式(I)で表されるイミダゾール化合物が、2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール又は2-エチル-4-メチルイミダゾールである、(1)又は(2)に記載の製造方法、
に関する。
本発明の包接化合物の製造方法は、以下の成分(A)、成分(B)及び成分(C)を混合する混合工程と、加熱工程とを含む方法であれば、特に制限されるものではない。
(A)プロトン性溶媒を含む混合溶媒
(B)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種
(C)式(I)で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種
本発明の成分(A)は、少なくとも1種の溶媒がプロトン性である混合溶媒であれば、特に制限されるものではないが、第一の溶媒と第二の溶媒を含む混合溶媒であることが好ましい。
ここで、前記第一の溶媒は水及びメタノールからなる群から選ばれる少なくとも1種で、第二の溶媒はアルコール系溶媒、エステル系溶媒、ケトン系溶媒、脂肪族炭化水素系溶媒、及び芳香族炭化水素系溶媒からなる群から選ばれる少なくとも1種である。
好ましい第一の溶媒と第二の溶媒の組み合わせとして、水とメタノール、水とメチルエチルケトン、メタノールとメチルエチルケトン、メタノールと酢酸エチル、水と酢酸エチル、水とヘキサン等を例示できる。
ホスト化合物は、1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種の成分(B)である。成分(B)の化合物がカルボン酸基を有する化合物の場合、水酸基を有する化合物よりも水素結合が強いため、包接化合物として強固な結晶構造になる。ホスト化合物の違いにより得られる包接化合物の熱特性等が異なることから、使用様態に応じて適宜選択することができる。
ゲスト化合物は、下記式(I)で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種の成分(C)である。
R2~R4のC1~C20のアルキル基としては、R1のアルキル基として挙げたもののほか、ウンデシル基、ラウリル基、パルミチル基、ステアリル基等が挙げられる。
R2~R4のヒドロキシ基で置換されたC1~C20のアルキル基としては、ヒドロキシメチル基又はヒドロキシエチル基等が挙げられる。
R2~R4のC1~C20のアシル基としては、ホルミル基;アセチル基、プロピオニル基、ブチリル基、イソブチリル基、バレリル基、イソバレリル基、ピバロイル基、ヘキサノイル基、オクタノイル基、デカノイル基、ラウロイル基、ミリストイル基、パルミトイル基、ステアロイル基などのアルキル置換アシル基;アクリロイル基、メタクリロイル基などのアルケニル置換アシル基;ベンゾイル基、トルオイル基、ナフトイル基などのアリール置換のアシル基;シクロヘキシルカルボニル基等のシクロアルキル置換アシル基;クロロホルミル基等のハロゲン原子を有するアシル基等が挙げられる。
R2~R4のアリール基は、単環又は多環のアリール基を意味する。ここで、多環アリール基の場合は、完全不飽和に加え、部分飽和の基も包含する。例えばフェニル基、ナフチル基、アズレニル基、インデニル基、インダニル基、テトラリニル基等のC6-10アリール基が挙げられる。
R2~R4のアラルキル基は、上記アリール基とアルキル基が結合した基であり、 ベンジル基、フェネチル基、3-フェニル-n-プロピル基、1-フェニル-n-へキシル基、ナフタレン-1-イルメチル基、ナフタレン-2-イルエチル基、1-ナフタレン-2-イル-n-プロピル基、インデン-1-イルメチル基等のC6-10アリールC1-6アルキル基が挙げられる。
ハロゲン原子としては、フッ素原子、塩素原子、臭素原子、沃素原子が挙げられる。
R1~R4のアルキル基、アリール基、アラルキル基、アシル基は置換基を有していてもよく、置換基としてはアルキル基、ヒドロキシ基、アルコキシ基、アリール基、アラルキル基、ハロゲン原子を挙げることができる。
置換基としてのこれらの基の具体例としては、上記と同様の基を挙げることができる。なお、アルコキシ基のアルキル基部分の具体例としては、上記アルキル基と同じものを挙げることができる。
本発明の混合工程は、成分(A)に記載の混合溶媒、成分(B)に記載の化合物(以下、ホスト化合物ともいう)、及び成分(C)に記載の化合物(以下、ゲスト化合物ともいう)を混合するのであれば特に制限はなく、例えば、以下のような方法を例示できる。
(a)混合溶媒に、ホスト化合物とゲスト化合物とを加える
(b)混合溶媒にホスト化合物を加えた後、ゲスト化合物を加える
(c)混合溶媒にゲスト化合物を加えた後、ホスト化合物を加える
(d)混合溶媒にホスト化合物を加えた後、溶媒に溶解させたゲスト化合物を加える(ただし、ゲスト化合物の溶解に用いる溶媒は、混合溶媒を構成する溶媒成分のうちの少なくとも1種と同一であることが好ましい)
(e)混合溶媒にホスト化合物を加えた後、加熱溶融させたゲスト化合物を加える(ただし、ゲスト化合物が固体の場合)
(f)混合溶媒とホスト化合物を混合した後、該混合物を加熱しながらゲスト化合物を加える
(g)ゲスト化合物に、混合溶媒に溶解したホスト化合物を加える
包接化合物の製造時におけるホスト化合物とゲスト化合物との混合割合としては、ホスト化合物1モルに対して、ゲスト化合物が、0.1~10モルであることが好ましく、0.5~5.0モルであることがより好ましい。
本発明の加熱工程とは、製造工程のどこかに加熱処理を行う工程が含まれていれば特に制限はないが、前記混合工程時及び/又は前記混合工程後に加熱処理を行うことが好ましい。
加熱温度は、用いる溶媒の種類によっても異なるが、例えば40~150℃の範囲内であり、好ましくは加熱還流することである。加熱時間は5分~12時間、好ましくは1~3時間である。
本発明の包接化合物の製造方法は、本発明の効果が損なわれない範囲で、上記混合工程又は上記加熱工程のいずれかの工程の前後に、他の工程を有していてもよい。他の工程として例えば、
前記加熱工程の後に混合物を冷却する工程;
冷却した混合物を濾過する工程;
濾過して得られた物質を乾燥させて、包接化合物の結晶を得る工程;
ホスト化合物やゲスト化合物が固体の場合、前記混合工程の前に、該ホスト化合物や該ゲスト化合物を粉砕する工程;
等が挙げられる。
ここで、ホスト化合物やゲスト化合物の粒径は、本発明の効果が得られる限り特に制限されないが、平均粒径を50μm以下とすることが好ましく、20μm以下とすることがより好ましい。
包接化合物に含まれるホスト化合物及びゲスト化合物の割合は、包接化合物を形成しうる限り特に制限はないが、ホスト化合物1モルに対して、ゲスト化合物が、0.1~10モルであることが好ましく、0.5~5.0モルであることがより好ましい。
第3成分を含有する場合には、第3成分は包接化合物全量に対して40モル%以下であることが好ましく、さらには10モル%以下が好ましく、特に、第3成分を含まないことが最も好ましい。また、ホスト化合物に対して、二種類以上のゲスト化合物を反応させることにより、三成分以上の多成分からなる包接化合物を得ることもできる。
公知の製造方法で得られる包接化合物を結晶変換することにより、前述した方法で得られる包接化合物と同等のものを得る方法も、本発明に含まれる。
その場合の包接化合物の製造方法は、成分(A)及び成分(D)を混合する混合工程と、加熱工程とを含む方法であれば特に制限されるものではない。
(A)プロトン性溶媒を含む混合溶媒
(D)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種及び下記式(I)で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種を含む包接化合物
前記成分(D)に記載の包接化合物は、公知の方法を用いて製造することができる。例えば、ホスト化合物とゲスト化合物を溶媒に添加後、必要に応じて攪拌しながら加熱処理又は加熱還流処理を行った後、析出させることにより得る方法や、前記ホスト化合物及びゲスト化合物を溶媒にいったん溶解させた後、該溶媒を冷却して結晶を析出させる晶析法等を例示することができるが、これらの方法に限定されるものではない。なお、前記成分(D)に含まれるイミダゾール化合物は前述のとおりである。
前記混合工程及び前記加熱工程は、前述の混合工程及び加熱工程と同様に行うことができる。
[実施例1]~[実施例8]
フラスコに表1に示す量のTEP(製品名:TEP-DF、旭有機材工業(株)製)、2P4MHZ(製品名:2P4MHZ-PW、四国化成工業(株)製)、及び混合溶媒を加え、攪拌しながら加熱還流を3時間行った。冷却後、ろ過、乾燥を行い、包接比(TEP:2P4MHZ)=1:2の包接化合物(結晶B)を得た。
実施例1で得られた包接化合物につき、熱重量測定・示差走査熱量測定(TG-DSC)を行った。TG-DSCは、熱重量測定装置(製品名:TGA-DSC1、メトラー・トレド社製)を用いて、アルミ容器内に約3mgの結晶を設置し、窒素パージ下(流速50mL/分)昇温速度20℃/分、30~500℃の温度範囲で測定した。その結果、得られた包接化合物の2P4MHZの放出温度は231℃であった。実施例2~8についても同じ測定結果を得た。
特許文献1に記載の方法に準じてTEPと2P4MHZの包接化合物を製造して包接化合物(結晶A)を得た。
得られた包接化合物のTG-DSCを、実施例1と同様の装置及び条件で測定した。その結果、得られた包接化合物の2P4MHZの放出温度は223℃であった。結晶Bは結晶Aと比して前記放出温度が高く、結晶Bの方が熱力学的に安定な結晶形であることがわかった。
フラスコに表2に示す量の包接化合物(結晶A)及び混合溶媒を加え、攪拌しながら加熱還流を3時間行った。冷却後、ろ過、乾燥を行うことで包接化合物(結晶B)を得た。それぞれの包接化合物のTG-DSCを測定し、実施例1と同じ結果を得た。
フラスコに、3.04g(16.7mmol)のHIPAと表3に記載の量の混合溶媒を加え、攪拌した。そこへ予め酢酸エチル又はメチルエチルケトンに溶解させた1.84g(16.7mmol)の2E4MZ(製品名:2E4MZ、四国化成工業(株)製)を滴下した後、攪拌しながら加熱還流を3時間行った。冷却後、ろ過、乾燥を行い、包接比(HIPA:2E4MZ)=1:1の包接化合物(結晶D)を得た。
実施例12で得られた包接化合物のTG-DSCを、実施例1と同様の装置及び条件で測定した。その結果、得られた包接化合物の2E4MZの放出温度は189℃であった。実施例13~16についても同じ測定結果を得た。
特許文献3に記載の方法に準じてHIPAと2E4MZの包接化合物を製造して包接化合物(結晶C)を得た。
得られた包接化合物のTG-DSCを、実施例1と同様の装置及び条件で測定した。その結果、得られた包接化合物の2E4MZの放出温度は173℃であった。結晶Dは結晶Cと比して前記放出温度が高く、結晶Dの方が熱力学的に安定な結晶形であることがわかった。
フラスコに表4に示す量の包接化合物(結晶C)及び混合溶媒を加え、攪拌しながら加熱還流を3時間行った。冷却後、ろ過、乾燥を行うことで、包接化合物(結晶D)を得た。それぞれの包接化合物のTG-DSCを測定し、実施例12と同じ結果を得た。
表5に示す量の、ナトリウム成分を多く含む低品位TEP、2P4MHZ、及び混合溶媒を加え、攪拌しながら加熱還流を3時間行った。冷却後、ろ過、乾燥を行い、包接化合物を得た。
各成分に含まれるナトリウム元素濃度を、ICP-AES(誘導結合プラズマ発光分光分析装置)にて測定した結果を表5に示す。この結果より、低品位TEPに含まれるナトリウム元素はろ過後のろ液中に溶出し、得られる包接化合物に残存しないことから、本発明の製造方法を用いると、低品位原料を用いた場合でも高純度の包接化合物を得ることができることがわかった。
Claims (4)
- 下記成分(A)、成分(B)、及び成分(C)を混合する混合工程と、加熱工程とを含む包接化合物の製造方法。
(A)プロトン性溶媒を含む混合溶媒
(B)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種
(C)下記式(I)
で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種 - 下記成分(A)及び成分(D)を混合する混合工程と、加熱工程とを含む、結晶変換による包接化合物の製造方法。
(A)プロトン性溶媒を含む混合溶媒
(D)1,1,2,2-テトラキス(4-ヒドロキシフェニル)エタン、5-ヒドロキシイソフタル酸、及び5-ニトロイソフタル酸からなる群から選ばれる少なくとも1種と、下記式(I)で表されるイミダゾール化合物からなる群から選ばれる少なくとも1種とを含む包接化合物
- 前記混合溶媒が、水及びメタノールからなる群から選ばれる少なくとも1種である第一の溶媒と、アルコール系溶媒、エステル系溶媒、ケトン系溶媒、脂肪族炭化水素系溶媒、及び芳香族炭化水素系溶媒からなる群から選ばれる少なくとも1種であり、かつ前記第一の溶媒とは異なる種類の溶媒である第二の溶媒と、を含む請求項1又は2に記載の製造方法。
- 前記式(I)で表されるイミダゾール化合物が、2-フェニル-4-メチル-5-ヒドロキシメチルイミダゾール又は2-エチル-4-メチルイミダゾールである、請求項1又は2に記載の製造方法。
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- 2016-01-13 WO PCT/JP2016/000128 patent/WO2016117295A1/ja active Application Filing
- 2016-01-13 CN CN201680004145.6A patent/CN107001282A/zh active Pending
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- 2016-01-13 JP JP2016570534A patent/JP6301504B2/ja active Active
- 2016-01-13 KR KR1020177016030A patent/KR102049646B1/ko active IP Right Grant
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JP2007039449A (ja) * | 2005-07-06 | 2007-02-15 | Nippon Soda Co Ltd | 包接化合物、硬化触媒、硬化樹脂形成用組成物及び硬化樹脂 |
JP2007191450A (ja) * | 2006-01-20 | 2007-08-02 | Nippon Soda Co Ltd | スラリー法による包接化合物の製造法 |
WO2010103809A1 (ja) * | 2009-03-11 | 2010-09-16 | 日本曹達株式会社 | エポキシ樹脂組成物、硬化剤及び硬化促進剤 |
JP2013213168A (ja) * | 2012-04-04 | 2013-10-17 | Nippon Soda Co Ltd | プリプレグ用エポキシ樹脂組成物 |
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Title |
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TAKENORI TAKEDA ET AL.: "3 B4-13 1,1,2,2- Tetrakis (4-Hydroxyphenyl) Ethane to Imidazole Yudotai Hosetsu Kessho no Kozo Hikaku to Guest Datsuri Kyodo", THE 89TH ANNUAL MEETING OF THE CHEMICAL SOCIETY OF JAPAN IN SPRING KOEN YOKOSHU, vol. 89, no. 2, 2009, pages 789, XP009504883, ISSN: 0285-7626 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2020225884A1 (ja) * | 2019-05-08 | 2020-11-12 | ||
WO2020225884A1 (ja) * | 2019-05-08 | 2020-11-12 | 昭和電工マテリアルズ株式会社 | 樹脂粒子混合物 |
JP7294412B2 (ja) | 2019-05-08 | 2023-06-20 | 株式会社レゾナック | 樹脂粒子混合物 |
Also Published As
Publication number | Publication date |
---|---|
TWI589739B (zh) | 2017-07-01 |
US20180022675A1 (en) | 2018-01-25 |
CN107001282A (zh) | 2017-08-01 |
KR20170084228A (ko) | 2017-07-19 |
JPWO2016117295A1 (ja) | 2017-09-14 |
EP3248965A1 (en) | 2017-11-29 |
EP3248965A4 (en) | 2018-08-15 |
KR102049646B1 (ko) | 2019-11-28 |
US10508068B2 (en) | 2019-12-17 |
TW201629279A (zh) | 2016-08-16 |
JP6301504B2 (ja) | 2018-03-28 |
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