WO2012020572A1 - Latent curing agent composition and one-part curable epoxy resin composition - Google Patents
Latent curing agent composition and one-part curable epoxy resin composition Download PDFInfo
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- WO2012020572A1 WO2012020572A1 PCT/JP2011/004551 JP2011004551W WO2012020572A1 WO 2012020572 A1 WO2012020572 A1 WO 2012020572A1 JP 2011004551 W JP2011004551 W JP 2011004551W WO 2012020572 A1 WO2012020572 A1 WO 2012020572A1
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G59/182—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 using pre-adducts of epoxy compounds with curing agents
- C08G59/184—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 using pre-adducts of epoxy compounds with curing agents with amines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/315—Compounds containing carbon-to-nitrogen triple bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
Definitions
- the present invention relates to a latent curing agent composition suitable for use with a polyepoxy compound and / or a cyanate ester, in particular, an addition reaction product obtained by reacting an amine compound with a polyglycidyl compound, and a molecular weight
- a latent curing agent composition containing an optimized phenol resin, which is stable at normal temperature and functions as a curing agent when heated, and a one-part curable epoxy resin containing the latent curing agent composition Relates to the composition.
- Epoxy resins have excellent adhesion to various substrates, and cured products obtained by curing epoxy resins with curing agents have relatively excellent heat resistance, chemical resistance, electrical properties, mechanical properties, etc. Therefore, it is applied in a wide range of industrial fields, and in particular, it is used in the fields of paints and adhesives.
- Conventional epoxy resin compositions are mainly two-component systems in which a curing agent or a curing accelerator is added immediately before use.
- This two-component epoxy resin composition has a feature that it can be cured at room temperature or low temperature, but on the other hand, it must be weighed and mixed immediately before use and has a short usable time. For this reason, it has a drawback that its use conditions are limited, such as difficulty in application to automatic machines. In order to eliminate such drawbacks, a one-part curable epoxy resin composition is desired.
- a so-called latent curing agent which is a curing agent that does not react at room temperature but has a property of starting a curing reaction when heated.
- a latent curing agent for example, dicyandiamide, dibasic acid dihydrazide, boron trifluoride amine complex salt, guanamines, melamine, imidazoles and the like have been proposed.
- a mixture of dicyandiamide, melamine, or guanamines with an epoxy resin is excellent in storage stability, but must be cured at a high temperature of 150 ° C. or higher for a long time. It has the disadvantage of requiring unsuitable curing conditions. In addition, it has been widely practiced to shorten the curing time by using these and a curing accelerator in combination, but in this case, there is a disadvantage that storage stability is significantly impaired.
- dibasic acid dihydrazide or imidazoles when they are used, they are cured at a relatively low temperature but have poor storage stability.
- boron trifluoride amine complex salt when boron trifluoride amine complex salt is used, it has advantages such as excellent storage stability and a short curing time, but has disadvantages such as poor water resistance and corrosion of metals.
- Patent Document 1 an epoxy adduct of isophoronediamine, which is an adduct-modified amine obtained by reacting an epoxy compound with a polyamine compound, as a latent curing agent.
- Patent Document 2 has poor storage stability. Therefore, it has been proposed to use a reaction product of an imidazole compound, a polyepoxy compound, and a phenol novolak as a latent curing agent (Patent Document 2), but in this case, only a poor adhesive property can be obtained. There is a drawback.
- a first object of the present invention is to provide a latent curing agent composition suitable for a one-component curable resin composition having excellent storage stability and excellent curability and adhesiveness. is there.
- the second object of the present invention is to provide a one-part curable resin composition having excellent storage stability and excellent curability and adhesiveness.
- the present inventors have used a mixture of an adduct-modified polyamine compound and a phenol resin having an optimized molecular weight as a latent curing agent, and a polyepoxy compound and The inventors have found that a one-part curable resin composition containing a cyanate ester has good storage stability, curability and adhesiveness, and reached the present invention.
- the present invention relates to (A) (a) an addition compound obtained by reacting an amine compound having an active hydrogen group and (b) a polyglycidyl compound, and (B) an epoxy resin containing a phenol resin.
- Curing agent composition wherein the phenol resin contains 10 to 40% by mass of a binuclear substance, the number average molecular weight (Mn) is 900 to 2000, and the weight average molecular weight (Mw) is 2500 to 5000.
- a latent curing agent composition having a molecular weight distribution (Mw / Mn) of 2.0 to 4.0, and a one-component curability comprising the latent curing agent composition It is a resin composition.
- the latent curing agent composition of the present invention in combination with a polyepoxy compound and, if necessary, a cyanate ester, a one-part curable resin composition excellent in storage stability, curability and adhesiveness. Things are obtained.
- the latent curing agent composition of the present invention comprises (A) component, (a) an addition reaction product obtained by reacting an amine compound having an active hydrogen group and (b) a polyglycidyl compound, and (B) It is the hardening
- Examples of the amine compound having an active hydrogen group used as the component (a) include ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,3-diaminobutane, and 1,4-diaminobutane.
- Alkylenediamines such as diethylenetriamine, triethylenetriamine, tetraethylenepentamine, etc .; 1,3-diaminomethylcyclohexane, 1,2-diaminocyclohexane, 1,4-diamino-3,6-diethylcyclohexane Alicyclic polyamines such as isophoronediamine; aromatic polyamines such as m-xylylenediamine, diaminodiphenylmethane and diaminodiphenylsulfone; guanamines such as benzoguanamine and acetoguanamine; Imidazoles such as ru-4-methylimidazole, 2-isopropylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-aminopropylimidazole; Dihydrazides such as di
- an amine compound having at least one tertiary amino group among the above amine compounds from the viewpoint of heat resistance of the cured product.
- R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 8 carbon atoms, or R 1 and R 2 are bonded to each other to contain an oxygen atom or a nitrogen atom.
- n represents an integer of 1 to 6.
- R 3 to R 5 in the general formula (II) represent a hydrogen atom, an alkyl group or an aryl group which can have a substituent.
- Examples of the alkyl group having 1 to 8 carbon atoms represented by R 1 and R 2 in the general formula (I) include, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl , Amyl, isoamyl, tertiary amyl, hexyl, heptyl, octyl, isooctyl, 2-ethylhexyl, tertiary octyl and the like.
- alkyl group having 1 to 18 carbon atoms represented by R 3 , R 4 and R 5 in the general formula (II) include, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, Tertiary butyl, amyl, isoamyl, tertiary amyl, hexyl, heptyl, octyl, isooctyl, 2-ethylhexyl, tertiary octyl, nonyl, isononyl, decyl, isodecyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, Examples include octadecyl, vinyl, allyl, hydroxymethyl, hydroxyethyl, aminomethyl,
- examples of the aryl group represented by R 3 , R 4, and R 5 include groups such as phenyl and naphthyl. One to four of these aryl groups may be substituted with the alkyl group described above.
- N, N-dialkylaminoalkylamines include, for example, N, N-dimethylaminopropylamine, N, N— Diethylaminopropylamine, N, N-dipropylaminopropylamine, N, N-dibutylaminopropylamine, N, N-dimethylaminoethylamine, N, N-dimethylaminoethylamine, N, N-dimethylaminobutylamine, aminopropylmorpholine Aminoethylpiperidine, 1- (2-aminoethyl) -4-methylpiperazine, and the like.
- Examples of the imidazole compound represented by the general formula (II) as the component (a) include 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-isopropylimidazole, 2-undecylimidazole, 2 -Heptadecylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-aminopropylimidazole and the like.
- polyglycidyl compound as the component (b) used in the component (A) in the present invention examples include polyglycidyl ether compounds of mononuclear polyhydric phenol compounds such as hydroquinone, resorcin, pyrocatechol, and phloroglucinol; Dihydroxynaphthalene, biphenol, methylene bisphenol (bisphenol F), methylene bis (orthocresol), ethylidene bisphenol, isopropylidene bisphenol (bisphenol A), isopropylidene bis (orthocresol), tetrabromobisphenol A, 1,3-bis (4- Hydroxycumylbenzene), 1,4-bis (4-hydroxycumylbenzene), 1,1,3-tris (4-hydroxyphenyl) butane, 1,1,2,2-tetra (4-hydroxyphenyl) Nyl) ethane, thiobisphenol, sulfobisphenol, oxybisphenol, phenol novolak, ortho
- the reaction between the polyamine compound of component (a) and the polyglycidyl compound of component (b) is based on the amount of active hydrogen of the polyamine compound of component (a) equivalent to 1 equivalent of the component (b).
- the ratio is such that the epoxy equivalent is 0.5 to 2 equivalents, preferably 0.8 to 1.5 equivalents.
- the epoxy equivalent of the component (b) to be used is less than 0.5 equivalent, the storage stability of the one-part curable resin composition of the present invention may be insufficient, and the use exceeds 2 equivalents. In such a case, the curability of the one-part curable resin composition of the present invention may decrease, which is not preferable.
- the phenol resin which is the component (B) used in the present invention is a phenol resin synthesized from phenols and aldehydes.
- the phenols include phenol, cresol, ethylphenol, n-propylphenol, isopropylphenol, butylphenol, tert-butylphenol, octylphenol, nonylphenol, dodecylphenol, cyclohexylphenol, chlorophenol, bromophenol, resorcin, catechol, hydroquinone.
- the phenol resin which is the component (B) used in the present invention needs to contain 10 to 40% by mass of a binuclear substance, and its number average molecular weight (Mn) is 900 to 2000, preferably 950 to 1500, It is necessary that the weight average molecular weight (Mw) is 2500 to 5000, preferably 3000 to 4000, and the molecular weight distribution (Mw / Mn) is 2.0 to 4.0.
- the number average molecular weight (Mn) is preferably 950 to 1500, the weight average molecular weight (Mw) is preferably 3000 to 4000, and the molecular weight distribution (Mw / Mn) is 2.5 to 3.5. It is preferable.
- a latent curing agent composition obtained by using a phenol resin exceeding the above range the stability of the one-part curable epoxy resin composition obtained in combination with the polyepoxy compound is reduced, Since adhesiveness falls, it is unpreferable.
- the use amount of the phenol resin as the component (B) is preferably 150 parts by mass or less, particularly preferably 10 to 100 parts by mass with respect to 100 parts by mass of the addition reaction product as the component (A). . Even if it exceeds 150 parts by mass, it is not preferable because it is not only useless but also may adversely affect curability.
- the phenol resin as the component (B) can be simply blended, but can also be used by reacting as a blocking agent for the active hydrogen compound as the component (a).
- the latent curing agent composition of the present invention includes, for example, adipic acid, glutaric acid, pimelic acid, suberic acid, sebacic acid, maleic acid, itaconic acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, pyromellitic A polycarboxylic acid such as an acid can also be contained.
- the latent curing agent composition of the present invention can be used by dissolving in various solvents in order to facilitate handling.
- solvents include ethers such as tetrahydrofuran, 1,2-dimethoxyethane, 1,2-diethoxyethane; iso- or n-butanol, iso- or n-propanol, amyl alcohol, benzyl alcohol,
- alcohols such as furfuryl alcohol and tetrahydrofurfuryl alcohol
- aromatic hydrocarbons such as benzene, toluene, and xylene
- aniline triethylamine, pyridine, dioxane, acetonitrile, and the like.
- the amount of the organic solvent used is 0 to 200 parts by weight, preferably 30 to 150 parts by weight, based on 100 parts by weight of the total solid content. If the amount of the organic solvent used exceeds 200 parts by mass, it is not preferable because it volatilizes and is harmful, and there is a risk of ignition.
- the latent curing agent composition of the present invention is used in combination with a main agent mainly composed of a polyepoxy compound and / or a cyanate ester.
- polyepoxy compound examples include polyglycidyl ether compounds of mononuclear polyhydric phenol compounds such as hydroquinone, resorcin, pyrocatechol, and phloroglucinol; dihydroxynaphthalene, biphenol, methylene bisphenol (bisphenol F), methylene bis (orthocresol) ), Ethylidene bisphenol, isopropylidene bisphenol (bisphenol A), isopropylidene bis (orthocresol), tetrabromobisphenol A, 1,3-bis (4-hydroxycumylbenzene), 1,4-bis (4-hydroxyc) Milbenzene), 1,1,3-tris (4-hydroxyphenyl) butane, 1,1,2,2-tetra (4-hydroxyphenyl) ethane, thiobisphenol, sulfobisphenol Polyglycidyl ether compounds of polynuclear polyhydric phenol compounds such as alcohol, oxybisphenol, phenol novolak
- epoxy resins may be internally crosslinked by a prepolymer of a terminal isocyanate, or may have a high molecular weight with a polyvalent active hydrogen compound (polyhydric phenol, polyamine, polyphosphate ester, etc.).
- a polyvalent active hydrogen compound polyhydric phenol, polyamine, polyphosphate ester, etc.
- the polyepoxy compound used in the present invention preferably has an epoxy equivalent of 100 to 2000, and particularly preferably 150 to 1500.
- an epoxy equivalent of less than 100 the curability may be lowered, and when an epoxy equivalent of more than 2000 is used, there is a possibility that sufficient physical properties of the coating film may not be obtained.
- the above-mentioned polyepoxy compound can be used by dissolving in various solvents for easy handling.
- the solvent used in this case in addition to the solvents described above, for example, ketones such as methyl ethyl ketone, methyl amyl ketone, diethyl ketone, acetone, methyl isopropyl ketone, propylene glycol monomethyl ether acetate, cyclohexanone; ethyl acetate, n-acetate Esters such as butyl; Terpene hydrocarbon oils such as turpentine oil, D-limonene, and pinene; Mineral spirit, Swazol # 310 (Cosmo Matsuyama Oil Co., Ltd.), Solvesso # 100 (Exxon Chemical Co., Ltd.), etc. Examples include boiling-point paraffinic solvents.
- the amount of the organic solvent used is 0 to 200 parts by mass with respect to 100 parts by mass of the polyepoxy compound, but 30 to 150 parts by mass is particularly preferable. If the amount of the organic solvent used exceeds 200 parts by mass, it is not preferable because it volatilizes and is harmful, and there is a risk of ignition and the like.
- a reactive or non-reactive diluent can be used as the main agent mainly composed of the polyepoxy compound used in the present invention.
- reactive diluents include phenol, cresol, ethylphenol, propylphenol, p-tert-butylphenol, p-tert-amylphenol, hexylphenol, octylphenol, nonylphenol, dodecylphenol, octadecylphenol, and terpenephenol. These monoglycidyl ether compounds are listed.
- examples of the non-reactive diluent include dioctyl phthalate, dibutyl phthalate, and benzyl alcohol.
- the amount of the polyepoxy compound and the latent curing agent composition of the present invention used in the one-component curable resin composition of the present invention may be used so that the former epoxy equivalent and the latter active hydrogen equivalent are equal. Although preferable, the amount can be changed in any range as required.
- the latent curing agent composition of the present invention is combined with a main component mainly composed of a polyepoxy compound, for example, a paint for concrete, cement mortar, various metals, leather, glass, rubber, plastic, wood, cloth, paper, or the like.
- a polyepoxy compound for example, a paint for concrete, cement mortar, various metals, leather, glass, rubber, plastic, wood, cloth, paper, or the like.
- Adhesives adhesive tapes for packaging, adhesive labels, frozen food labels, removable labels, POS labels, adhesive wallpaper, adhesive flooring, etc .; art paper, lightweight coated paper, cast coated paper, coated paperboard, carbon Processing paper such as paperless copying machines and impregnated paper; fiber treatment agents such as natural fibers, synthetic fibers, glass fibers, carbon fibers, metal fibers, etc., fraying prevention agents, processing agents, etc .; sealing materials, cement admixtures, waterproofing It can be used for a wide range of applications such as building materials such as materials; electrical and electronic materials such as laminates and semiconductor encapsulants.
- the latent curing agent composition of the present invention is particularly preferably used in combination with the above-mentioned polyepoxy compound in combination with a main agent mainly composed of a cyanate ester.
- the cyanate ester that can be used in the present invention is not particularly limited.
- the following general formula (1) represents an unsubstituted or fluorine-substituted divalent hydrocarbon group, or —O—, —S—, or a single bond
- R 2 and R 3 are: Each independently represents a phenylene group which is unsubstituted or substituted with 1 to 4 alkyl groups
- n in the general formula (2) is an integer of 1 or more
- R 4 is a hydrogen atom or an alkyl having 1 to 4 carbon atoms. Represents a group.
- a prepolymer in which a part of the cyanate group in the compound of the general formula (1) or (2) forms a triazine ring can also be used as a main agent mainly composed of a cyanate ester.
- the prepolymer include those in which all or part of the compound represented by the general formula (1) is trimerized.
- cyanate ester used in the present invention More preferable as the main component mainly composed of cyanate ester used in the present invention is the following general formula (3):
- 4,4′-ethylidenebisphenylene cyanate, 2,2-bis (4-cyanatophenyl) propane, and bis (4-cyanato- Preferably, 3,5-dimethylphenyl) methane is the main agent.
- R 5 represents the following group.
- N in the above group is an integer of 4 to 12
- R 6 , R 7 , R 8 and R 9 are each independently a hydrogen atom or an unsubstituted or fluorine-substituted methyl group
- R 10 and R 11 are Each independently represents a hydrogen atom or an unsubstituted or fluorine-substituted methyl group.
- the cyanate ester may be used alone or in combination of two or more.
- the one-component curable resin composition of the present invention can also be used in a solvent-free one-component type as described above.
- the occurrence of VOC can be suppressed, so that not only can a highly safe material with reduced environmental load be provided, but also the material can penetrate into the space and cure.
- the one-component curable resin composition of the present invention is used in a wide range of applications such as paints or adhesives for concrete, cement mortar, various metals, leather, glass, rubber, plastic, wood, cloth, paper, etc. be able to.
- paints or adhesives for concrete, cement mortar, various metals, leather, glass, rubber, plastic, wood, cloth, paper, etc. be able to.
- it since it has high heat resistance and excellent adhesiveness, it is suitably used for electronic material applications and automotive material applications such as semiconductor protective sealing and electronic component adhesion.
- a flask equipped with a thermometer, a cooling device, a stirring device, a dropping device, and a dehydrating device was charged with 300 g of propylene glycol monomethyl ether and 100 g of N, N-diethylaminopropylamine, and the reaction system was heated to 70 to 75 ° C., 213 g of Adeka Resin EP-4100E (trade name of ADEKA Corporation; bisphenol A type epoxy resin, epoxy equivalent 190) was added dropwise. After completion of the dropping, the mixture was aged at 110 to 130 ° C. for 1 hour, and the solvent was removed at 110 to 130 ° C. at normal pressure for 1 hour, and at 175 to 185 ° C. and 20 to 30 torr for 1 hour.
- Adeka Resin EP-4100E trade name of ADEKA Corporation; bisphenol A type epoxy resin, epoxy equivalent 190
- phenol resin PR1 phenol resin PR1 was dividedly charged at 175 to 185 ° C., and the phenol resin was dissolved. Furthermore, vacuum degassing was performed at 180 to 190 ° C. and 20 to 30 torr for 1 hour to obtain a curing agent composition (HC-1).
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device (MP-S3, the same shall apply hereinafter) manufactured by Yanaco. The melting point was 85 ° C.
- a curing agent composition (HCH-1) was obtained by reacting and treating in the same manner as in Example 1 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 91 ° C.
- a curing agent composition (HC-2) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR2 was used instead of the phenol resin PR1.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 85 ° C.
- a curing agent composition (HCH-2) was obtained by reacting and treating in the same manner as in Example 3 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 90 ° C.
- a curing agent composition (HC-3) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR3 was used instead of the phenol resin PR1.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 82 ° C.
- a curing agent composition (HCH-3) was obtained by reacting and treating in the same manner as in Production Example 5 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- curing agent composition was ground with a mortar, and when it measured using the melting
- a curing agent composition (HC-4) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR4 was used instead of the phenol resin PR1.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 86 ° C.
- a curing agent composition (HCH-4) was obtained by reacting and treating in the same manner as in Comparative Example 1 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 89 ° C.
- a curing agent composition (HC-5) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR5 was used instead of the phenol resin PR1.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 95 ° C.
- a curing agent composition (HCH-5) was obtained by reacting and treating in the same manner as in Comparative Example 3 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 91 ° C.
- a curing agent composition (HC-6) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR6 was used instead of the phenol resin PR1.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 82 ° C.
- a curing agent composition (HCH-6) was obtained by reacting and treating in the same manner as in Comparative Example 3 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine.
- the obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 87 ° C.
- reaction start temperature Using a differential scanning calorimeter DSC 6220 manufactured by SII Nano Technologies, the heating rate was 10 ° C./min and the scanning temperature range was 25 to 300 ° C., and the exothermic starting temperature read from the DSC chart was taken as the reaction starting temperature.
- the one-part curable epoxy resin composition obtained according to Table 2 was allowed to stand at 25 ° C., and the viscosity at 25 ° C. was measured at 5 rpm using a Brookfield E-type rotational viscometer.
- an addition reaction product obtained by reacting an amine compound having an active hydrogen group with a polyglycidyl compound, and a curing agent composition for an epoxy resin containing a phenol resin contains 10 to 40% by mass of the binuclear body, the number average molecular weight (Mn) is 900 to 2000, the weight average molecular weight (Mw) is 2500 to 5000, and the molecular weight distribution (Mw / Mn ) Is 2.0 to 4.0, the curable, stable, and adhesive properties of the one-part curable epoxy resin composition containing the obtained latent curing agent composition are extremely excellent. It was confirmed that
- the latent curing agent composition of the present invention in combination with a polyepoxy compound and, if necessary, a cyanate ester, one-component curability excellent in storage stability, curability and adhesiveness. Since the resin composition is obtained, this is used with an automatic machine, for example, a paint or adhesive for concrete, various metals, leather, glass, rubber, plastic, etc .; adhesive tape for packaging, adhesive label, frozen food label Adhesives such as adhesive wallpaper and adhesive flooring; Processing paper such as impregnated paper; Converging agent such as natural fiber, synthetic fiber and glass fiber; Fiber treatment agent such as fraying preventive and processing agent; Sealing material and cement admixture , Building materials such as waterproofing materials; electrical and electronic materials such as laminates and semiconductor encapsulants can be used efficiently in a wide range of applications, thereby contributing to industrial development
Abstract
Description
本発明の第2の目的は、保存安定性に優れると共に、硬化性及び接着性にも優れた一液硬化性樹脂組成物を提供することにある。 Accordingly, a first object of the present invention is to provide a latent curing agent composition suitable for a one-component curable resin composition having excellent storage stability and excellent curability and adhesiveness. is there.
The second object of the present invention is to provide a one-part curable resin composition having excellent storage stability and excellent curability and adhesiveness.
但し、一般式(I)中のR1及びR2は、それぞれ独立に炭素原子数1~8のアルキル基であるか、又は、R1及びR2が結合して酸素原子又は窒素原子を含むことのできるアルキレン基を表し、nは1~6の整数を表す。 Formula (I)
However, R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 8 carbon atoms, or R 1 and R 2 are bonded to each other to contain an oxygen atom or a nitrogen atom. And n represents an integer of 1 to 6.
但し、一般式(II)中のR3~R5は、水素原子、置換基を有することのできるアルキル基又はアリール基を表す。 Formula (II)
However, R 3 to R 5 in the general formula (II) represent a hydrogen atom, an alkyl group or an aryl group which can have a substituent.
で表される化合物、又は、
下記一般式(2)
で表される化合物が挙げられる。
但し、前記一般式(1)中のR1は、非置換又はフッ素置換の2価の炭化水素基、又は、-O-、-S-、若しくは単結合を表し、R2及びR3は、それぞれ独立に非置換又は1~4個のアルキル基で置換されているフェニレン基を表し、一般式(2)中のnは1以上の整数、R4は水素原子又は炭素数1~4のアルキル基を表す。 The cyanate ester that can be used in the present invention is not particularly limited. For example, the following general formula (1)
Or a compound represented by
The following general formula (2)
The compound represented by these is mentioned.
However, R 1 in the general formula (1) represents an unsubstituted or fluorine-substituted divalent hydrocarbon group, or —O—, —S—, or a single bond, and R 2 and R 3 are: Each independently represents a phenylene group which is unsubstituted or substituted with 1 to 4 alkyl groups, n in the general formula (2) is an integer of 1 or more, and R 4 is a hydrogen atom or an alkyl having 1 to 4 carbon atoms. Represents a group.
で表される化合物、及びこれらのプレポリマーであり、本発明においては特に、4,4’-エチリデンビスフェニレンシアネート、2,2-ビス(4―シアナトフェニル)プロパン及びビス(4-シアナト-3,5-ジメチルフェニル)メタンを主剤とすることが好ましい。
なお、前記一般式(3)におけるR5は、下記の基
又は、基:
であり、上記の基におけるnは4~12の整数、R6、R7、R8及びR9は、それぞれ独立に、水素原子又は非置換若しくはフッ素置換のメチル基、R10及びR11は、それぞれ独立に、水素原子又は非置換若しくはフッ素置換のメチル基である。 More preferable as the main component mainly composed of cyanate ester used in the present invention is the following general formula (3):
In the present invention, 4,4′-ethylidenebisphenylene cyanate, 2,2-bis (4-cyanatophenyl) propane, and bis (4-cyanato- Preferably, 3,5-dimethylphenyl) methane is the main agent.
In the general formula (3), R 5 represents the following group.
Or the group:
N in the above group is an integer of 4 to 12, R 6 , R 7 , R 8 and R 9 are each independently a hydrogen atom or an unsubstituted or fluorine-substituted methyl group, R 10 and R 11 are Each independently represents a hydrogen atom or an unsubstituted or fluorine-substituted methyl group.
フェノール樹脂(PR1~PR6)の製造
温度計、撹拌装置、滴下装置及び冷却管を備えた4つ口セパラブルフラスコに、フェノール、50%ホルマリン水溶液及びシュウ酸を仕込んで加熱し、還流温度にて4時間反応させた。環流反応後、常圧で160℃まで昇温させた後3時間かけて濃縮し、更に、160℃に保持したまま20~30トールとなるまで減圧し、留出物が出なくなるまで減圧濃縮して、下記〔表1〕に示す分子量分布をもった黄褐色のフェノール樹脂(PR1~PR6)を得た。
得られた各試料0.01gをTHF10gに溶解した後、ゲルパーミエーションクロマトグラフィー(昭和電工(株)製のShodex GPC-101)を用いると共に、測定用サンプルカラムとして昭和電工(株)製のShodex KF-802、リファレンスカラムとして昭和電工(株)製のShodex KF-800RH、展開溶剤としてTHFを用い、RI検出器による測定値から、各試料の、ポリスチレン換算数平均分子量、同重量平均分子量及び分子量分布を算出した。 [Production Examples 1 to 6]
Production of phenolic resins (PR1 to PR6) A 4-neck separable flask equipped with a thermometer, a stirrer, a dropping device and a condenser tube was charged with phenol, 50% formalin aqueous solution and oxalic acid and heated at reflux temperature. The reaction was performed for 4 hours. After the reflux reaction, the temperature was raised to 160 ° C. at normal pressure, followed by concentration over 3 hours. Further, while maintaining the temperature at 160 ° C., the pressure was reduced to 20 to 30 Torr, and the solution was concentrated under reduced pressure until no distillate was produced. Thus, yellowish brown phenol resins (PR1 to PR6) having the molecular weight distribution shown in [Table 1] below were obtained.
After 0.01 g of each obtained sample was dissolved in 10 g of THF, gel permeation chromatography (Shodex GPC-101 manufactured by Showa Denko KK) was used, and Shodex manufactured by Showa Denko KK was used as a sample column for measurement. KF-802, Shodex KF-800RH manufactured by Showa Denko Co., Ltd. as the reference column, THF as the developing solvent, and the polystyrene-equivalent number average molecular weight, weight average molecular weight and molecular weight of each sample from the values measured by the RI detector Distribution was calculated.
フェノール樹脂PR1の代わりにフェノール樹脂PR4を使用したこと以外は、実施例1と同様に反応させ処理して硬化剤組成物(HC-4)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は86℃であった。 [Comparative Example 1]
A curing agent composition (HC-4) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR4 was used instead of the phenol resin PR1. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 86 ° C.
N,N-ジエチルアミノプロピルアミン100gの代わりに1,2-ジアミノプロパン74gを使用したこと以外は、比較例1と同様に反応させ処理して硬化剤組成物(HCH-4)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は89℃であった。 [Comparative Example 2]
A curing agent composition (HCH-4) was obtained by reacting and treating in the same manner as in Comparative Example 1 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 89 ° C.
フェノール樹脂PR1の代わりにフェノール樹脂PR5を使用したこと以外は、実施例1と同様に反応させ処理をして硬化剤組成物(HC-5)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は95℃であった。 [Comparative Example 3]
A curing agent composition (HC-5) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR5 was used instead of the phenol resin PR1. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 95 ° C.
N,N-ジエチルアミノプロピルアミン100gの代わりに1,2-ジアミノプロパン74gを使用したこと以外は、比較例3と同様に反応させ処理して硬化剤組成物(HCH-5)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は91℃であった。 [Comparative Example 4]
A curing agent composition (HCH-5) was obtained by reacting and treating in the same manner as in Comparative Example 3 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 91 ° C.
フェノール樹脂PR1の代わりにフェノール樹脂PR6を使用したこと以外は、実施例1と同様に反応させ処理をして硬化剤組成物(HC-6)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は82℃であった。 [Comparative Example 5]
A curing agent composition (HC-6) was obtained by reacting and treating in the same manner as in Example 1 except that the phenol resin PR6 was used instead of the phenol resin PR1. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 82 ° C.
N,N-ジエチルアミノプロピルアミン100gの代わりに1,2-ジアミノプロパン74gを使用したこと以外は、比較例3と同様に反応させ処理して硬化剤組成物(HCH-6)を得た。得られた硬化剤組成物を乳鉢ですりつぶし、ヤナコ社製の融点測定器を用いて測定したところ、融点は87℃であった。 [Comparative Example 6]
A curing agent composition (HCH-6) was obtained by reacting and treating in the same manner as in Comparative Example 3 except that 74 g of 1,2-diaminopropane was used instead of 100 g of N, N-diethylaminopropylamine. The obtained curing agent composition was ground in a mortar and measured using a melting point measuring device manufactured by Yanaco. The melting point was 87 ° C.
上記実施例及び比較例において製造された硬化剤組成物を〔表2〕に示す組成で配合し、一液硬化性エポキシ樹脂組成物を製造し、以下の性能評価を行った。その結果を〔表3〕に示す。 [Examples 7 to 9 and Comparative Examples 7 to 9]
The hardening | curing agent composition manufactured in the said Example and comparative example was mix | blended with the composition shown in [Table 2], the one-pack curable epoxy resin composition was manufactured, and the following performance evaluation was performed. The results are shown in [Table 3].
表2にしたがって得られた一液硬化性エポキシ樹脂組成物の硬化性を、製造直後にゲル化試験機(ホットプレート型ゲル化試験器GT-DS-SF:(株)ユーカリ技研製の商品名)を用いて測定した。このとき、糸を引かなくなった時点をゲル化時間とした。 (Curable)
The curability of the one-part curable epoxy resin composition obtained in accordance with Table 2 was measured immediately after production using a gelation tester (hot plate type gelation tester GT-DS-SF: product name manufactured by Yukari Giken Co., Ltd.). ). At this time, the time when the yarn was not pulled was defined as the gel time.
SIIナノテクノロジーズ社製示差走査熱量計DSC6220を用いて、昇温速度10℃/分、走査温度範囲を25~300℃として測定し、DSCチャートから読み取った発熱開始温度を、反応開始温度とした。 (Reaction start temperature)
Using a differential scanning calorimeter DSC 6220 manufactured by SII Nano Technologies, the heating rate was 10 ° C./min and the scanning temperature range was 25 to 300 ° C., and the exothermic starting temperature read from the DSC chart was taken as the reaction starting temperature.
表2にしたがって得られた一液硬化性エポキシ樹脂組成物を25℃で放置し、ブルックフィールドE型回転粘度計を用いて、5rpmで25℃における粘度を測定した。 (viscosity)
The one-part curable epoxy resin composition obtained according to Table 2 was allowed to stand at 25 ° C., and the viscosity at 25 ° C. was measured at 5 rpm using a Brookfield E-type rotational viscometer.
表2にしたがって得られた一液硬化性エポキシ樹脂組成物について、JIS K 6850に準拠した方法により、80℃で60分間硬化させた後の、鋼板/鋼板の剪断接着力を求めた。
(Adhesiveness)
About the one-pack curable epoxy resin composition obtained according to Table 2, the shear adhesive strength of the steel plate / steel plate after curing for 60 minutes at 80 ° C. was determined by a method based on JIS K 6850.
Claims (7)
- (A)(a)活性水素基を有するアミン化合物と(b)ポリグリシジル化合物を反応させて得られる付加反応物、及び、(B)フェノール樹脂を含有してなるエポキシ樹脂用硬化剤組成物であって、前記フェノール樹脂が、2核体を10~40質量%含有すると共に、その数平均分子量(Mn)が900~2000、重量平均分子量(Mw)が2500~5000であって、分子量分布(Mw/Mn)が2.0~4.0であることを特徴とする潜在性硬化剤組成物。 (A) (a) an addition reaction product obtained by reacting an amine compound having an active hydrogen group and (b) a polyglycidyl compound, and (B) a curing agent composition for an epoxy resin containing a phenol resin. The phenol resin contains 10 to 40% by mass of the binuclear body, the number average molecular weight (Mn) is 900 to 2000, the weight average molecular weight (Mw) is 2500 to 5000, and the molecular weight distribution ( A latent curing agent composition having a Mw / Mn) of 2.0 to 4.0.
- 前記(a)活性水素基を有するアミン化合物が、少なくとも3級アミノ基を1個以上有するアミン化合物を含む、請求項1に記載された潜在性硬化剤組成物。 The latent curing agent composition according to claim 1, wherein the amine compound (a) having an active hydrogen group includes an amine compound having at least one tertiary amino group.
- 前記少なくとも3級アミノ基を1個以上有するアミン化合物が、下記一般式(I)で表されるジアルキルアミノアルキルアミン、又は下記一般式(II)で表されるイミダゾール化合物である、請求項2に記載された潜在性硬化剤組成物;
一般式(I):
但し、上記一般式(I)中のR1及びR2は、それぞれ独立に炭素原子数1~8のアルキル基を表すか、又は、R1及びR2が結合して酸素原子又は窒素原子を含むことのできるアルキレン基を表し、nは1~6の整数を表す。
一般式(II):
但し、上記一般式(II)中のR3~R5は、水素原子、置換基を有することのできるアルキル基又はアリール基を表す。 The amine compound having at least one tertiary amino group is a dialkylaminoalkylamine represented by the following general formula (I) or an imidazole compound represented by the following general formula (II). The latent curing agent composition described;
Formula (I):
However, R 1 and R 2 in the above general formula (I) each independently represent an alkyl group having 1 to 8 carbon atoms, or R 1 and R 2 are bonded to form an oxygen atom or a nitrogen atom. Represents an alkylene group which can be contained, and n represents an integer of 1 to 6.
General formula (II):
However, R 3 to R 5 in the general formula (II) represent a hydrogen atom, an alkyl group or an aryl group which can have a substituent. - 前記少なくとも3級アミノ基を1個以上有するアミン化合物が、ジエチルアミノプロピルアミン、ジエチルアミノエチルアミン、N-アミノエチルピペラジンの中から選ばれた少なくとも一種である、請求項2に記載された潜在性硬化剤組成物。 The latent curing agent composition according to claim 2, wherein the amine compound having at least one tertiary amino group is at least one selected from diethylaminopropylamine, diethylaminoethylamine, and N-aminoethylpiperazine. object.
- 前記(B)フェノール樹脂が、フェノールとホルムアルデヒドから得られるフェノール樹脂である、請求項1~4の何れかに記載された潜在性硬化剤組成物。 The latent curing agent composition according to any one of claims 1 to 4, wherein the (B) phenol resin is a phenol resin obtained from phenol and formaldehyde.
- ポリエポキシ化合物及び請求項1~5の何れかに記載された少なくとも1種の潜在性硬化剤組成物を含有してなることを特徴とする、一液硬化性樹脂組成物。 A one-part curable resin composition comprising a polyepoxy compound and at least one latent curing agent composition according to any one of claims 1 to 5.
- ポリエポキシ化合物、シアン酸エステル及び請求項1~5の何れかに記載された少なくとも1種の潜在性硬化剤組成物を含有してなることを特徴とする一液硬化性樹脂組成物。 A one-part curable resin composition comprising a polyepoxy compound, a cyanate ester and at least one latent curing agent composition according to any one of claims 1 to 5.
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JP2013199550A (en) * | 2012-03-23 | 2013-10-03 | Hitachi Chemical Co Ltd | Resin composition |
WO2015083622A1 (en) * | 2013-12-05 | 2015-06-11 | スリーボンドファインケミカル株式会社 | Heat-curable resin composition |
JP2020100727A (en) * | 2018-12-21 | 2020-07-02 | 株式会社Adeka | Latent curing agent composition and curable resin composition containing the same |
WO2020175321A1 (en) | 2019-02-28 | 2020-09-03 | 株式会社Adeka | Novel compound, composition containing said compound, and cured object |
JP2020152818A (en) * | 2019-03-20 | 2020-09-24 | 旭化成株式会社 | Epoxy resin composition |
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KR101741652B1 (en) * | 2015-05-08 | 2017-06-01 | 주식회사 케이씨씨 | Latent crosslinker for powder coatings and powder coating composition comprising the same |
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