Classifications

• • 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
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
  • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
  • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
  • C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
  • C08G59/4014—Nitrogen containing compounds
  • C08G59/4042—Imines; Imides
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
  • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
  • C07F9/02—Phosphorus compounds
  • C07F9/28—Phosphorus compounds with one or more P—C bonds
  • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
  • C07F9/3804—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
  • C07F9/3808—Acyclic saturated acids which can have further substituents on alkyl
  • C07F9/3813—N-Phosphonomethylglycine; Salts or complexes thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
  • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
  • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
  • C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66

Definitions

• the present invention relates to a one-pack moisture-curable epoxy resin composition that has both excellent curing characteristics and good storage stability.
• 1-part, room-temperature-curing epoxy adhesive, 1-part, room-temperature-curing epoxy putty, 1-part, room-temperature-curing epoxy paint which has both excellent curing properties and good storage stability.
• the present invention relates to a one-component moisture-curable epoxy resin composition suitable as a one-component cold-setting epoxy coating material and a one-component cold-setting epoxy potting material.
• Epoxy resin compositions have excellent physical strength and adhesiveness, and have been widely used as adhesives, putty materials, paints and coating materials.
• Conventional epoxy resin compositions use a highly reactive amine compound as a curing agent, and are therefore of a two-part type in which the epoxy resin and the curing agent component are mixed immediately before use.
• the two-component epoxy resin composition requires operations such as measurement and mixing, and therefore, is inferior in workability, and has had various problems such as measurement errors and poor mixing due to its complexity.
• the two-pack type also had the disadvantage that the usable time was limited because the chemical reaction started by mixing.
• Ketimine compounds and oxazolidine compounds are well known as latent curing agents for epoxy resins and isocyanate-terminated urethane prepolymers.
• the reaction mechanism of a composition containing an epoxy resin of a ketimine compound or an oxazolidinide compound as a latent curing agent will be described.
• ketimine compounds react with moisture in the air and decompose to form primary amine compounds having active hydrogen.
• Okisazo lysine compound thus c generates a secondary amino alcohols by moisture in the air, the reaction of the first stage, the latent curing agent is a process of decomposing in water.
• the second stage reaction is a process in which the degraded latent curing agent and the epoxy resin chemically react. That is, the reaction mechanism of the composition in which the latent curing agent and the epoxy resin are blended is a two-step reaction of the reaction between the latent curing agent and the water and the reaction between the amine compound and the epoxy resin.
• the most important thing about a composition containing these latent curing agent and epoxy resin is as follows: (1) The faster the hydrolysis rate of a latent curing agent, for example, a ketimine compound, the faster the curability is obtained. That is.
• composition comprising a latent curing agent, a ketimine compound or an oxazolidinide compound, and an epoxy resin provides excellent storage stability. If a composition that is compatible with excellent curing properties is found, these will be used. Since it is a basic technology for adhesives, putty materials, paints, coating materials, potting materials, etc., the industrial utility is greatly improved.
• an object of the present invention is to provide a one-part moisture-curing type that can achieve both room-temperature curing and excellent storage stability without compromising curability.
• An object of the present invention is to provide an epoxy resin composition. Disclosure of the invention
• the present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a one-pack moisture-curing epoxy containing a carboxylic acid vinyl ester compound or a silane compound having an epoxy group and a ketimine compound or an oxazolidin compound. It has been found that the resin composition exhibits remarkably excellent storage stability.
• a one-pack moisture-curable epoxy resin composition containing a ketimine compound or an oxazolidine compound that hydrolyzes by the moisture in the air to produce an amine compound was blended with a bierester compound or a silyl compound having an epoxy group. Occasionally, it has been found that the storage stability can be further improved without impairing the curability such as the rise in adhesiveness and mechanical strength.
• an epoxy resin composition containing a silyl compound having an epoxy group has specifically excellent deep curability.
• the technology here does not hinder the balance between the practical curing characteristics and storage stability described above, but has been confirmed to be an additional function.
• a silyl compound having an epoxy group when added to the epoxy resin composition, water entering during production or storage in a container reacts with the ketimine compound oxazolidine compound. Before, the silyl compound having an epoxy group removes water and the ketimine compound or oxazolidine compound is stably present. The epoxy group reacts with the amine compound, and the storage stability is maintained without impairing the physical properties of the cured product. And a function for improving the Further, when the carboxylic acid ester compound is added to the epoxy resin composition, a ketimine compound, an oxazolidinated compound or an amine compound decomposed and formed from the compound during storage in a container.
• the present inventors have further studied a wide range of compounds having such properties, a blending amount with an epoxy resin, and a synthesis technique.
• the invention has been completed.
• Means of the present invention for achieving the above object is, in the first invention, a carboxylic acid ester compound represented by the following chemical formula (1) and an epoxy group in an organic group represented by the following chemical formula (2): And a compound obtained by reacting one or more compounds selected from the group consisting of a silyl compound having the following formula with a carbonyl compound represented by the following chemical formula (3) and an amine compound having a primary amino group: One or two selected from the group consisting of an oxazolidin compound represented by the following chemical formula (5), which is obtained by dehydrating and condensing a ketimine compound represented by the chemical formula (4), a carbonyl compound and an amino alcohol compound.
• a one-pack moisture-curable epoxy resin composition containing at least one kind of compound and an epoxy resin.
• R 2 , R 3 , R 4 a hydrogen atom or an organic group, and R 2 , R 3 , and R 4 may be the same or different.
• n Integer of 1 or more.
• R 5 and R 6 are alkyl groups, and R 5 and R 6 may be the same or different.
• R 7 Organic group having epoxy group
• n an integer from 1 to 3
• R 8 and R 9 are alkyl groups, and R 8 and R 9 may be the same or different.
• R, 0 residue excluding the primary amino group of the amine compound
• R 8 and R 9 are alkyl groups, and R 8 and R 9 may be the same or different.
• n 1 or greater integer
• R 1 2 ⁇ RR 14, R 15 a hydrogen atom or an organic group
• the silyl compound having an epoxy group refers to a compound having a hydrolyzable alkoxysilyl group composed of a bond of a Si atom and an O atom and having an epoxy group represented by the chemical formula (2).
• This alkoxysilyl moiety causes a dealcoholization reaction with water, consuming water.
• the silyl compound reacts faster with the little water entering the system of the composition than the ketimine compound and consumes it to prevent hydrolysis of the ketimine compound.
• the storage stability is improved because the ketimine compound is decomposed during storage and the generation of the amine compound is suppressed.
• the silyl compound reacts quickly with water, but since a large amount of water enters the system, the ketimine compound represented by the chemical formula (4) according to the present invention is Reacts quickly with water due to its fast hydrolytic properties. That is, it means that the composition of the present invention does not require long-term curing to obtain practical properties that can be used.
• silyl compounds have more cross-linking sites in one molecule because the epoxy group also becomes a reactive site in addition to the hydrolyzable reactive site at the bond between the Si atom and the o atom. ing.
• the cross-linking structure becomes faster and more complex, and even after curing for a certain period of time, Become In other words, it has excellent deep curability.
• the technology here does not hinder the balance between the practical curing characteristics and storage stability described above, but is a function to be added.
• the vinyl carboxylate compound reacts with a small amount of the amine compound generated by decomposition from the ketimine compound oxazolidine compound by a small amount of water entering the system of the composition during storage, and reacts with the epoxy resin.
• the storage stability is improved due to the formation of the less active amide compound.
• the carboxylic acid butyl ester compound reacts with the amine compound, but the addition amount is small, and the amount of the amine compound that is decomposed and formed is large in contrast, so that the curing property is low. It does not affect. That is, it means that the storage stability can be improved without lowering the curability during use.
• the ketimine compound refers to a hydrolyzable compound represented by the chemical formula (4) and having a double bond between a C atom and an N atom. This site reacts with water to hydrolyze into an amine compound having a primary amino group and a carbonyl compound having two identical or different alkyl groups.
• the amine compound in the one-component moisture-curable epoxy resin composition, after the amine compound is formed, it reacts with the epoxy resin and cures.
• hydrolyzable represented by Formula (5) The Okisazorijin compound of, O atoms and secondary amino alcohols c this part reacts with water to refer to cyclic compounds having on the same carbon of N atoms Same or different from, It is hydrolyzed to a carbonyl compound having two alkyl groups.
• an amine compound is formed, reacts with the epoxy resin, and cures.
• the chemical formula (1) is obtained by reacting a carboxylic acid biester compound with a carbonyl compound represented by the chemical formula (3) and an amine compound having a primary amino group.
• a one-pack moisture-curable epoxy resin composition containing the above compound and an epoxy resin.
• a one-pack type epoxy resin containing a silyl compound having an epoxy group in an organic group represented by the chemical formula (2), a ketimine compound represented by the chemical formula (4), and an epoxy resin A composition.
• a vinyl ester carboxylate compound represented by the chemical formula (1), a silyl compound represented by the following chemical formula (6) and a silyl compound represented by the following chemical formula (7) are selected from the group consisting of: The chemical formula obtained by reacting one or more compounds with a carbonyl compound represented by the chemical formula (3) and an amine compound having a primary amino group
• R 16, R 17 -R 18 ′ R 19 are alkyl groups, and R 16 , R 17 , R 18 and R 19 may be the same or different.
• n 1 or greater integer
• R 2 an alkyl group
• R 21 may be the same or different.
• R 22 an organic group
• n an integer from 1 to 3.
• the composition of the present invention is a one-pack moisture-curable epoxy resin composition that does not require long-term curing to exhibit sufficient strength.
• the carboxylate ester compound used in the present invention may be any compound having a carboxylate ester group represented by the following chemical formula (1).
• the following chemical formula (1) As a specific example, the following chemical formula
• the compound represented by (1) vinyl acetate, vinyl butyrate, vinyl caproate, vinyl caprylate, vinyl caprate, vinyl laurate, bilister myristate, vinyl palmitate, vinyl stearate, cyclohexane
• examples thereof include carboxylate vinyl, vinyl octylate, vinyl acetate monochloro mouth, divinyl adipate, vinylinole methacrylate, vinyl crotonate, vinyl sorbate, vinyl benzoate, vinyl cinnamate, and the like.
• the carboxylic acid ester used in the present invention is not limited to these, and it goes without saying that two or more kinds may be used in combination.
• R 2 , R 3 , R 4 a hydrogen atom or an organic group, and R 2 , R 3 , and R 4 may be the same or different.
• n 1 or greater integer
• the silyl compound having an epoxy group in an organic group used in the present invention is represented by the following chemical formula (2), and includes an epoxy group and an alkoxysilyl group. Any compound may be used as long as it has both in one molecule. Specific examples include ⁇ -glycidoxypropyltrimethoxysilane represented by the following chemical formula (8), and ⁇ -dalicidoxypropyltriethoxysilane represented by the following chemical formula (9). Examples include, but are not limited to, KB # 403 and KBE403 (all manufactured by Shin-Etsu Chemical Co., Ltd.). It goes without saying that two or more kinds may be used in combination and may be used in combination with the silyl compound represented by the chemical formula (6) or the chemical formula (7).
• R 5 and R 6 are alkyl groups, and R 5 and R 6 may be the same or different.
• R 7 Organic group having epoxy group
• n an integer from 1 to 3
• the ketimine compound used in the present invention the hydrolyzable group represented by the following Chemical Formula (4), c the ketimine compound means a compound having a double bond between C and N atoms is identical to the C atom of the carbonyl group Or a carbonyl compound having a different alkyl group and an amine compound having a primary amino group. Any structure may be used as long as it has the structure of chemical formula (4). For example, N, N,
• R 8 and R 9 are any one selected from the group consisting of alkyl groups, and R 8 and R 9 may be the same or different.
• n an integer c greater than or equal to 1
• the carbonyl compound used as a raw material of the ketimine compound used in the present invention may be any carbonyl compound represented by the following chemical formula (3) and having the same or different alkyl group at the C atom of the carbonyl group. No. Specific examples include acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl isopropyl ketone, methyl isopentyl ketone, and the like.
• R 8 and R 9 are alkyl groups, and R 8 and R 9 may be the same or different.
• the amine compound serving as a raw material of the ketimine compound used in the present invention may be any compound having a primary amino group, and specific examples thereof include ethylenediamine, diethylenetriamine, 1,3-bisamino Methylcyclohexane, norbornolenamine, metaxylylenediamine, isophoronediamine, bis (4-aminocyclohexyl) methane, polyamine with polyoxylen skeleton, N- (aminoethyl) ⁇ - ⁇ Examples include, but are not limited to, minopropyl trimethoxysilane, ⁇ - ⁇ (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltrimethoxysilane, y-aminopropyltriethoxysilane, and the like. Those having two or more primary amino groups in one molecule are preferable because excellent mechanical strength can be obtained.
• the ketimine compound may be produced by any production method.
• the carbonyl compound and the amine compound may be used in the absence of a solvent or in a non-polar solvent (hexane, hexagonal hexane, toluene, benzene).
• the mixture can be mixed in the presence, heated to reflux, and the water formed can be removed by azeotropic distillation.
• One or more compounds selected from the group consisting of carbonyl compounds and amine compounds used may be used as raw materials.
• the specific oxazolidine compound used in the present invention is a compound represented by the following chemical formula (5) and having an N atom and an O atom on the same hydrolyzable C atom.
• the oxazolidine compound is a compound obtained by reacting a carbonyl compound having the same or different alkyl group at the C atom of the carbonyl group with a secondary amino alcohol compound. Any structure can be used as long as it has the structure of chemical formula (5).
• R u, R 12, R 13 , R 14, R 15 a hydrogen atom or an organic group
• the carbonyl compound used as a raw material of the oxazolidine compound used in the present invention may be any carbonyl compound represented by the following chemical formula (3) as long as it has the same or different alkyl group at the C atom of the carbonyl group.
• Specific examples include acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl isopropyl ketone, methyl isopentyl ketone, ethynole ketone, dipropynole ketone, dibutynole ketone, ethyl propyl ketone, ethyl butyl ketone, and the like.
• R 8 and R 9 are alkyl groups, and R 8 and R 9 may be the same or different.
• the amino alcohol compound used as the raw material of the oxazolidine compound used in the present invention may be any compound having a secondary ethanolamine structure, and specific examples thereof include N-methylethanolamine and N-methylethanolamine. Examples include, but are not limited to, ethinoleethanolamine, N-propynolethananolamine, N-ethyl-2-methylethanolamine, and jetanolamine. Among them, N-methylethanolamine and N-ethylethanolamine are preferable because of their high reactivity with epoxy resins.
• the oxazolidine compound may be produced by any production method.
• the carbonyl compound and the amino alcohol compound may be prepared in a non-solvent or a non-polar solvent (hexane, cyclohexane, toluene). , Benzene, etc.) can be mixed in the presence, heated to reflux, and the generated water can be removed by azeotropic distillation.
• a non-solvent hexane, cyclohexane, toluene
• Benzene, etc. can be mixed in the presence, heated to reflux, and the generated water can be removed by azeotropic distillation.
• One or more compounds selected from the group consisting of carbonyl compounds and amino alcohol compounds used may be used as raw materials.
• the one-component epoxy resin composition may use two or more kinds of the ketimine compound and the oxazolidine compound, as long as the curability and the storage stability are not impaired.
• Other latent curing agents may be used together.
• the epoxy resin may be any epoxy resin having an epoxy group capable of reacting with an amine compound obtained by hydrolyzing a ketimine compound or an oxazolidin compound at the time of use.
• a biphenyl-type epoxy resin, a bisphenol A-type epoxy resin, a bisphenol F-type epoxy resin which is obtained by reacting biphenyl, bisphenol A, bisphenol F, bisphenol A, bisphenol S, etc.
• the silyl compound used in the present invention includes the following chemical formula (6): May be any compound having an alkoxysilyl group represented by the following chemical formula (7).
• Specific examples of the compound represented by the following chemical formula (6) include monomers and multimers such as tetramethoxysilane, tetraethoxysilane, and tetrabutoxysilane.
• the compound represented by the following chemical formula (7) includes a silane coupling agent having an organic group such as an alkyl group, a butyl group, an epoxy group, an isocyanate group, and a ketimine group.
• silane coupling agents include: dimethyldimethoxysilane, 'methyltrimethoxysilane, methyltriethoxysilane, butyltrimethoxysilane, vinyltriethoxysilane, 2-glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyl propyltriethoxysilane, ⁇ -glycidoxy.
• the present invention is not limited to these, and it goes without saying that two or more types may be used in combination.
• R i 6, R i 17 R 18 and R 19 are alkyl groups, and R 16 , R 17 , 8, and 9 may be the same or different from IPJ.
• n 1 or greater integer R 21 no 3- n
• R 2 an alkyl group
• R 21 may be the same or different.
• R 22 an organic group
• n an integer from 1 to 3
• the mixing ratio of the vinyl carboxylate of the present invention to the epoxy resin is 1 to 30 mol% with respect to 1 mol of the epoxy group. If the mixing ratio is higher than this, the vinyl carboxylate reacts with the amine compound generated from the ketimine compound oxazolidine compound and inhibits the reaction with the epoxy resin. When it is low, the storage stability is not improved because a small amount of water entering the composition during storage cannot sufficiently react with the amine compound generated by decomposing the ketimine compound oxazolidinide compound. A mixing ratio within this range is preferable because practical storage stability is obtained, and a mixing ratio of 5 to 15 mol% is more preferable because more ideal storage stability is obtained.
• the mixing ratio of the silyl compound represented by the chemical formulas (2), (6) and (7) and the epoxy resin used in the present invention varies depending on the type of the silyl compound used, but is based on 100 parts by mass of the epoxy resin. Of the silyl compound is preferably 10 parts by mass or more. If the amount is lower than this ratio, the amount of the silyl compound is small, and even a small amount of water entering the composition system during storage cannot be consumed, and the hydrolysis of the ketimine compound and oxazolidin compound cannot be suppressed. Practical storage stability cannot be obtained. If the ratio is within this range, practical storage stability can be obtained. It is more preferable that the combined ratio be 30 parts by mass or more, since the most excellent storage stability can be obtained.
• the mixing ratio of the ketimine compound and the epoxy compound of the present invention may be determined by the equivalent of active hydrogen of the amine compound generated by hydrolysis of the ketimine compound and the equivalent of the epoxy group of the epoxy compound. That is, the equivalent of active hydrogen of the amine compound generated by hydrolysis of the ketimine compound is preferably 0.5 to 2.0 times the equivalent of the epoxy group. If the proportion is lower than this, the epoxy groups become excessive, and satisfactory crosslinking does not proceed in the cured product, and practical mechanical strength cannot be obtained. When it is high, the amount of the amine compound generated by hydrolysis becomes excessive, that is, the amount of active hydrogen becomes excessive. In this case, practical mechanical strength cannot be obtained for the same reason.
• the mixing ratio is within this range, it is preferable because the cross-linked structure can provide practical mechanical strength.
• the mixing ratio is 0.8 to 1.2 times.
• Force S ideal cross-linked structure, adhesion It is more preferable because the mechanical strength of the agent composition is further improved.
• the mixing ratio of the oxazolidine compound and the epoxy compound of the present invention is preferably 10 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin having an equivalent weight of epoxy group of 190. If the mixing ratio is lower than this, the epoxy groups become excessive, and satisfactory crosslinking does not proceed in the cured product, and practical mechanical strength cannot be obtained. When it is high, the amount of the amine compound generated by hydrolysis becomes excessive, that is, the amount of active hydrogen becomes excessive. In this case, practical mechanical strength cannot be obtained for the same reason. When the content is within this range, a cross-linked structure that can provide practical mechanical strength is preferable, and an amount of 20 to 30 parts by mass results in an ideal cross-linked structure. Is more preferable because it has more excellent mechanical strength.
• composition of the present invention further includes, in addition to the above-mentioned compound, a range that does not impair the effects of the present invention.
• fillers such as calcium carbonate and titanium oxide, coupling agents such as epoxysilane and biersilane, plasticizers, thixotropic agents, pigments, dyes, antioxidants, antioxidants, antistatic agents, flame retardants A dispersant, a solvent and the like may be blended. In this case, removing as much as possible the effect of moisture of the above-mentioned components gives a good result on storage stability.
• the method for producing the composition of the present invention is not particularly limited.
• the composition is sufficiently kneaded with a stirrer such as a mixing mixer under a nitrogen atmosphere or under reduced pressure to obtain a composition.
• a stirrer such as a mixing mixer under a nitrogen atmosphere or under reduced pressure.
• An example is as follows. Epoxy resin is charged into the kettle using a closed processing kettle equipped with a stirrer, condenser, heating device, vacuum dehydration device, and nitrogen gas flow device. Using a nitrogen gas stream device, under nitrogen reflux, if necessary, a modifier or an additive is blended and homogeneously mixed. Thereafter, one or more selected from the group consisting of a ketimine compound and an oxazolidine compound are finally blended and homogeneously mixed to obtain a one-part moisture-curable adhesive composition.
• this one-part moisture-curable adhesive composition is stored in a sealed container subjected to nitrogen replacement, it will be a final product. If moisture is contained in the modifier or additive, it is easy to cure during storage and storage stability is reduced. Therefore, it is necessary to dehydrate and remove the moisture of the modifier or additive. preferable. The removal of water may be performed before blending the modifier or the additive, or after blending these with the epoxy resin, dehydration may be performed by heating or decompression.
• a ketimine compound B was obtained in the same manner as in Synthesis Example 1 except that 154 g of norpolnandiamine (trade name: NBD A, manufactured by Mitsui Chemicals, Inc.) was used as the amine compound.
• KBM403 an epoxysilane coupling agent
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 1 except that 45 parts by weight of ketimine compound A was used instead of the oxazolidinide compound as a latent curing agent.
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 2, except that 45 parts by weight of ketimine compound A was used instead of the oxazolidine compound as a latent curing agent.
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 4, except that 6.6 parts by mass of vinyl butyrate was added as a stabilizer.
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 5, except that ketimine compound B was used instead of ketimine compound A as a latent curing agent.
• Example 8 a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 5, except that 10 parts by mass of an oxazolidin compound as a latent curing agent was blended.
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 3 except that 40 parts by mass of ethyl silicate (trade name: TSL 8124, manufactured by Toshiba Silicone Co., Ltd.) was added as a stabilizer.
• ethyl silicate trade name: TSL 8124, manufactured by Toshiba Silicone Co., Ltd.
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 8, except that 13.1 parts by mass of vinyl laurate was used instead of vinyl butyrate as a stabilizer. (Comparative Example 1)
• a one-part moisture-curable epoxy resin composition was obtained in the same manner as in Example 1 except that butyric acid butyl was removed.
• Example 1 Example 2
• Example 3 Example 4
• Example 5 Example 6 Epo, fox ifl umami coat 898 100 100 100 100 100 100 ⁇ ⁇ 40 40 40 40 40 40 Calcium carbonate MS700 80 80 80 80 80 80 80 80 80 80 80 Oxazolidine compound MS-PLUS 3
• Ketimine compound B NBDA-MIBK 45 Vinyl ester compound A Vinyl acetate 6.6 6.6 6.6 Vinyl ester compound B Vinyl laurate
• Adhesion was measured by mortar bending adhesion test (see JIS A6024 adhesion) under each curing condition.
• the thickness of the cured product layer was measured by putting the product in a deep container to prevent air from entering, curing at 23 ° C for one week, curing, and removing the uncured composition. .
• the viscosity was measured when the sample was placed in a sealed cartridge and stored at each temperature condition.
• Adhesion was measured by a mortar bending adhesion test (see JIS A602, 4 Adhesion) under each curing condition.
• the thickness of the cured product layer was measured by placing the product in a deep container to prevent air from entering, curing at 23 ° C for 1 week, curing, and removing the uncured composition. .
• the viscosity was measured when the sample was placed in a sealed cartridge and stored at each temperature condition.
• the one-component moisture-curable epoxy resin composition is placed in a deep container so that no air is mixed in, and cured at 23 ° C for one week and cured.
• the thickness of the cured product layer from which the uncured composition was removed was measured.
• the thicknesses of the cured product layers were compared, and the following four grades were evaluated as excellent, good, acceptable, and unacceptable.
• the viscosity was measured when the sample was placed in a sealed cartridge and stored at each temperature condition. That is, the one-component moisture-curable epoxy resin composition was filled in a cartridge and sealed, and allowed to stand at 23 ° C. for each period, and then the viscosity was measured. The stability was compared with the viscosity immediately after compounding. The following four grades were evaluated as excellent, good, acceptable, and unacceptable. The viscosity was measured at 23 ° C.
• the measurement was performed at 10 r / min. Of a BH type viscometer.
• the one-part moisture-curable epoxy resin composition according to the example is equivalent to the one-part moisture-curable epoxy resin composition according to the comparative example. It turns out that it shows adhesiveness.
• the one-pack moisture-curable epoxy resin composition according to the example exhibits excellent storage stability compared to the one-pack moisture-curable epoxy resin composition according to the comparative example, and thus has a high adhesive strength. It can be seen that only the storage stability was improved without impairing the performance.
• the one-part moisture-curable epoxy resin composition according to the embodiment is different from the one-part moisture-curable epoxy resin composition according to the comparative example. It can be seen that the adhesiveness is equal to or higher than that of.
• the one-pack moisture-curable epoxy resin composition according to the example shows excellent storage stability compared to the one-pack moisture-curable epoxy resin composition according to the comparative example, and therefore, the adhesive performance It can be seen that only the storage stability is improved without impairing the storage stability.
• the storage stability and internal curability are improved without impairing the curability by using the carboxylic acid butyl ester as a stabilizer and epoxysilane in combination. It is possible to do.
• the one-part moisture-curable epoxy resin composition according to the present invention significantly improves storage stability without impairing rapid-curing properties. It is an adhesive composition that can be cured at room temperature and has both conflicting performances. Therefore, the one-pack moisture-curable epoxy resin composition according to the present invention is suitable for applications where conventional two-pack epoxy resins such as adhesives, putty materials, paints, coating materials, potting materials and the like are used. Suitable for effective use.
• a one-pack moisture-curable epoxy resin composition comprising a oxy resin.
• R is R 2 , R 3 , R 4 : a hydrogen atom or an organic group.
• R 1N R 2 , R 3 , R 4 may be the same or different.
• n 1 or greater integer
• R 5 and R 6 are alkyl groups, and R 5 and R 6 may be the same or different.
• n an integer from 1 to 3
• R 8 and R 9 are alkyl groups, and R 8 and R 9 may be the same or different.
• R 10 Residue excluding primary amino group of amine compound
• R 8 and R 9 are alkyl groups, and R 8 may be the same or different.
• R, R 12 , R 13 , R 14 , R 15 hydrogen atom or organic group
• the carboxylate compound represented by the above chemical formula (1), and 2 The chemical formula (4) obtained by reacting the carbonyl compound represented by the chemical formula (3) with an amine compound having a primary amino group. And the carbonyl compound and the amino alcohol compound (1) at least one compound selected from the group consisting of the oxazolidinide compound represented by the chemical formula (5) obtained by dehydration condensation, and (3) an epoxy resin.
• One-component moisture-curable epoxy resin composition One-component moisture-curable epoxy resin composition.
• One-liquid moisture comprising a silyl compound having an epoxy group in an organic group represented by the chemical formula (2), a ketimine compound represented by the chemical formula (4), and an epoxy resin.
• a one-component moisture-curable epoxy resin composition characterized by containing.
• R 16 ′ R 17 ′ R 18 ′ R 19 is an alkyl group, and R 16 , R 17 , R 18 and Rig may be the same or different.
• n 1 or greater integer 37
• R 2 an alkyl group
• R 21 may be the same or different.
• R 22 an organic group
• n ::! An integer between 3 and

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Life Sciences & Earth Sciences (AREA)
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• Epoxy Resins (AREA)
• Adhesives Or Adhesive Processes (AREA)

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• 2001
  • 2001-12-17 CN CNB018170730A patent/CN1266186C/zh not_active Expired - Fee Related
  • 2001-12-17 KR KR1020037007676A patent/KR100581340B1/ko not_active Expired - Fee Related
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  • 2001-12-17 WO PCT/JP2001/011072 patent/WO2002050155A1/ja not_active Ceased
  • 2001-12-17 DE DE60124774T patent/DE60124774T2/de not_active Expired - Lifetime
  • 2001-12-17 EP EP01271409A patent/EP1362877B1/en not_active Expired - Lifetime
  • 2001-12-17 US US10/381,741 patent/US7022779B2/en not_active Expired - Fee Related

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