WO2022004510A1 - 重合体の硬化に用いる硬化触媒及びその製造方法、湿気硬化型組成物、硬化物の製造方法 - Google Patents
重合体の硬化に用いる硬化触媒及びその製造方法、湿気硬化型組成物、硬化物の製造方法 Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/72—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44
- C08F4/74—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44 selected from refractory metals
- C08F4/76—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from metals not provided for in group C08F4/44 selected from refractory metals selected from titanium, zirconium, hafnium, vanadium, niobium or tantalum
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/10—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing hydrolysable silane groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0201—Oxygen-containing compounds
- B01J31/0211—Oxygen-containing compounds with a metal-oxygen link
- B01J31/0212—Alkoxylates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0239—Quaternary ammonium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
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- 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
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/28—Titanium compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
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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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
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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
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/19—Quaternary ammonium compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/458—Block-or graft-polymers containing polysiloxane sequences containing polyurethane sequences
Definitions
- the present invention relates to a curing catalyst used for curing a polymer, a method for producing the same, a moisture-curable composition, and a method for producing a cured product.
- the one-component moisture-curable rubber composition generally has a high curing rate, and it is not necessary to weigh and mix various additives such as a base polymer, a cross-linking agent, and a catalyst before use, so that the one-component type is a two-component type. It is superior in terms of workability.
- silicone-based rubbers silicone-based rubbers, modified silicone-based rubbers, urethane-based rubbers, polysulfide-based rubbers, and the like are known.
- An organopolysiloxane composition is widely used as a one-component moisture-curable rubber composition of a silicone-based rubber, and is cured at room temperature to form a rubber elastic body.
- the polymer compound of siloxane having a —Si—O— bond as the main chain, which is cross-linked and polymerized by organosiloxane has excellent properties such as water repellency, heat resistance, weather resistance, cold resistance, and electrical insulation. Widely used in fields such as civil engineering, electricity, electronics, and automobile industry.
- a one-component moisture-curable rubber composition of modified silicone-based rubber there is a composition containing a polymer having a crosslinkable reactive hydrolyzable silicon functional group having a polyether as a main chain.
- the curable composition of this polymer has better storage stability, weather resistance, foaming resistance and discoloration resistance than those of polyurethane-based rubber, and is superior in curability to surroundings as compared with polysulfide-based ones. It is less contaminated and non-toxic.
- the reaction mechanism in the process of the silicone-based rubber and the modified silicone-based rubber becoming a cured product is said to be due to the condensation reaction or addition reaction of the reactive hydrolyzable silicon-containing group in the coexistence of water, and the polymerization proceeds. It is believed that a cured polymer with a three-dimensional network structure is formed. Curing catalysts are used in order to accelerate curing in this reaction (Patent Documents 1 to 5).
- Japanese Unexamined Patent Publication No. 8-41358 Japanese Unexamined Patent Publication No. 60-161457 Special Publication No. 63-42942 Japanese Patent Application Laid-Open No. 2003-147220 Japanese Patent No. 5446265
- tin carboxylate compounds As a curing catalyst for the curing composition of the silicone-based rubber having the reactive hydrolyzable silicon-containing group and the modified silicone-based rubber, tin carboxylate compounds, alkyl tin salt compounds and the like have been conventionally used, but endocrine disruption is disrupted. Since there is concern about the effect on the living body as a substance, a combined catalyst of carboxylic acid and amine (Patent Document 1) has been proposed as a moisture-curable composition that does not use such a substance, but it is sufficiently cured at the time of construction. There is a problem that speed cannot be obtained.
- Patent Document 2 and Patent Document 3 it is proposed to use a titanium acid ester compound such as diisopropoxytitanium bis (alkylacetoacetonate) as a catalyst, but it is contained in the additive or filler in the composition. It is easily decomposed by the moisture, and the curing speed varies depending on the humidity at the time of construction, so that there is a problem that a stable cured product cannot be obtained.
- a titanium acid ester compound such as diisopropoxytitanium bis (alkylacetoacetonate)
- Patent Document 4 proposes to use a titanium tetracarboxylic dian compound as a catalyst, but there is a problem that practical satisfaction with respect to the curing rate cannot be obtained.
- Patent Document 5 proposes to use a quaternary ammonium salt as a catalyst, but there is a problem that a sufficient curing rate cannot be obtained at the time of construction.
- an object of the present invention is to provide a curing catalyst having high safety and a practical curing rate.
- the curing catalyst [B] used for curing a polymer [A] having a reactive hydrolyzable silicon-containing group.
- the curing catalyst [B] contains a complex [C] of a titanium compound [B1] and an ammonium hydroxide [B2].
- the titanium compound [B1] is represented by the chemical formula (1).
- the ammonium hydroxide [B2] is provided with a curing catalyst [B] represented by the chemical formula (2).
- the present inventor has found that when a curing catalyst [B] containing a complex [C] of a titanium compound [B1] and an ammonium hydroxide [B2] is used, the polymer [A] is used.
- the curing rate is significantly increased, and have reached the completion of the present invention. Since this catalyst does not contain tin, it is highly safe. In addition, it can be manufactured at low cost. Further, since the complex [C] is less likely to precipitate crystals, the curing catalyst [B] is excellent in storage stability.
- the curing catalyst [B] of the present invention is used for curing a polymer [A] having a reactive hydrolyzable silicon-containing group.
- the polymer [A] is preferably liquid at room temperature.
- the polymer [A] has at least one reactive hydrolyzable silicon-containing group per molecule at the terminal or side chain.
- the reactive hydrolyzable silicon-containing group may be present at the terminal of the polymer [A] molecule, at the side chain, or at both the terminal and the side chain.
- the number of reactive hydrolyzable silicon-containing groups may be at least one per molecule of the polymer [A], but the number is 1.5 or more per molecule on average in terms of curing rate and cured physical characteristics. Is preferable.
- a known method can be adopted as a method for binding the reactive hydrolyzable silicon-containing group to the main chain polymer.
- a reactive hydrolyzable silicon-containing group is a group having a silicon atom bonded to a hydrolyzable group (eg, halogen, alkoxy, alkenyloxy, asyloxy, amino, aminooxy, oxime, amide) or a reactive group consisting of a hydroxyl group. It has the property of causing a condensation reaction by using a catalyst or the like as needed in the presence of moisture or a cross-linking agent. Specific examples thereof include a halide silyl group, an alkoxysilyl group, an alkenyloxysilyl group, an acyloxysilyl group, an aminosilyl group, an aminooxysilyl group, an oximsilyl group, and an amidosilyl group.
- the number of reactive hydrolyzable groups bonded to one silicon atom is selected from the range of 1 to 3. Further, the reactive hydrolyzable group bonded to one silicon atom may be one kind or a plurality of kinds. Further, the reactive hydrolyzable group and the non-reactive hydrolyzable group may be bonded to one silicon atom, or the hydrolyzable group and the hydroxyl group may be bonded to one silicon atom.
- the reactive hydrolyzable silicon-containing group an alkoxysilyl group (including a monoalkoxysilyl group, a dialkoxysilyl group, and a trialkoxysilyl group) is particularly preferable because it is easy to handle.
- the trialkoxysilyl group is preferable because it has high activity and good curability can be obtained, and the obtained cured product is excellent in restorability, durability and creep resistance.
- the dialkoxysilyl group and the monoalkoxysilyl group are preferable because they have excellent storage stability and the obtained cured product has high elongation and high strength.
- Examples of the polymer [A] include an organic polymer [A1] and an organopolysiloxane [A2].
- Organic polymer [A1] The main chain of the organic polymer [A1] used in the present invention is one having a carbon atom, for example, an alkylene oxide polymer, a polyester polymer, an ether / ester block copolymer, a polymer of an ethylenically unsaturated compound, or a diene. Examples thereof include polymers of system compounds.
- the alkylene oxide polymer [CH 2 CH 2 O] n [CH (CH 3 ) CH 2 O] n [CH (C 2 H 5 ) CH 2 O] n [CH 2 CH 2 CH 2 CH 2 O] n
- n is the same or different integer of 2 or more.
- These alkylene oxide polymers may be used alone or in combination of two or more. Further, a copolymer containing two or more of the above repeating units can also be used.
- polyester polymer examples include carboxylic acids such as acetic acid, propionic acid, maleic acid, phthalic acid, citric acid, pyruvate, and lactic acid and their anhydrides, and their intramolecular and / or intermolecular esters and their substitutions. Examples are those having as a repeating unit.
- ether / ester block copolymer examples include those having both the repeating unit used for the above-mentioned alkylene oxide polymer and the repeating unit used for the above-mentioned polyester polymer as the repeating unit.
- the polymers of the ethylenically unsaturated compound and the diene compound include ethylene, propylene, acrylic acid ester, methacrylic acid ester, vinyl acetate, acrylonitrile, styrene, isobutylene, butadiene, isoprene, chloroprene and other homopolymers, or Examples thereof include these two or more kinds of copolymers. More specifically, polybutadiene, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, ethylene-butadiene copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene- (meth) acrylic acid.
- Ester copolymer polyisoprene, styrene-isoprene copolymer, isobutylene-isoprene copolymer, polychloroprene, styrene-chloroprene copolymer, acrylonitrile-chloroprene copolymer, polyisobutylene, polyacrylic acid ester, polymethacrylic acid Examples include esters. These may be used alone or in combination of two or more.
- an organic polymer having a polar group such as a nitrogen-containing characteristic group in the molecule can also be used.
- the nitrogen-containing characteristic group include a (thio) urethane group-derived linking group such as a (thio) urethane group, an allophanate group, another N-substituted urethane group, and an N-substituted allophanate group, and a (thio) urea group.
- Biling group derived from (thio) urea group such as biuret group, other N-substituted urea group, N, N'-substituted urea group, N-substituted biuret group, N, N'-substituted biuret group, amide group
- examples thereof include a amide group-derived binding group such as an N-substituted amide group, a nitrogen-containing characteristic group typified by an imino group-derived binding group, a (thio) ester group, and a (thio) ether group, but the present invention is limited thereto. Not done.
- a nitrogen-containing characteristic group is preferable because of its high curability, and a (thio) urethane group-derived binding group and a (thio) urea-derived binding group are more preferable because of its ease of synthesis. Further, only one nitrogen-containing characteristic group may be contained in the organic polymer [A1], and one or more nitrogen-containing characteristic groups may be further contained.
- the notations of "(thio)" and "N-substitution" are the same as above.
- the organic polymer [A1] contains a polar group such as the nitrogen-containing characteristic group
- the toughness of the cured product is improved, and the curability and the adhesive strength are enhanced.
- the crosslinkable silicon group is linked to the main chain via a polar group such as a nitrogen-containing characteristic group
- the curability is further enhanced.
- the polar groups of the nitrogen-containing characteristic groups are strongly attracted to each other by an interaction such as a hydrogen bond. It is considered that the polar groups of the nitrogen-containing characteristic groups are strongly attracted to each other, so that the molecules of the curable resin are also strongly bound to each other (domain formation), thereby exhibiting toughness in the cured product.
- the crosslinkable silicon groups are also close to each other when forming a domain between the nitrogen-containing characteristic groups.
- the contact probability between the crosslinkable silicon groups is also improved, and further, the condensation reactivity between the crosslinkable silicon groups is improved by catalytic curing by the polar group in the nitrogen-containing characteristic group.
- Such an organic polymer [A1] (modified silicone-based polymer) can be produced by a known method such as the method described in Japanese Patent Publication No. 61-18569, or is commercially available. ..
- Commercially available products include, for example, Kaneka MS Polymer series (MS Polymer S203, MS Polymer S303, MS Polymer S903, MS Polymer S911, MS Polymer SAX520, etc.) and Cyril Series (Cyril Polymer SAT200, Cyril) manufactured by Kaneka Corporation.
- Polymer MA430, Cyril Polymer MAX447, etc.), MA series, SA series, OR series; ES series (ES-GX3440ST, etc.) manufactured by Asahi Glass Co., Ltd., ESGX series, etc. are exemplified.
- the number average molecular weight of the organic polymer [A1] used in the present invention is not particularly limited, but an excessively high polymer has a high viscosity and is difficult to use in the case of a curable composition, so 30,000.
- the following is desirable.
- Such an organic polymer can be produced by a known method, but a commercially available product such as the above-mentioned Kaneka MS Polymer manufactured by Kaneka Corporation may be used.
- the organopolysiloxane [A2] used in the present invention has a main chain composed of a siloxane bond represented by Si—O, and further has an organic group bonded to a silicon atom constituting the siloxane bond.
- an organic group include an alkyl group such as methyl, ethyl, propyl and butyl; a cycloalkyl group such as cyclohexyl; an alkenyl group such as vinyl, isopropenyl and substituted vinyl; an allyl group, crotyl, methallyl and the like.
- Substituentally substituted allyl groups aryl groups such as phenyl, toluyl, xylyl; aralkyl groups such as benzyl, phenylethyl; and groups in which all or part of the hydrogen atoms of these organic groups are substituted with halogen atoms, such as chloromethyl groups, Examples thereof include 3,3,3-trifluoropropyl groups.
- the organopolysiloxane [A2] may be composed of a single main chain, or may be composed of two or more types of main chains.
- the organopolysiloxane may be linear or branched, including trifunctional (R'SiO 1.5 ) or tetrafunctional (SiO 2). Also, the physical properties and applications of the cured product, difunctional shaped as needed (R may be combined '2 SiO) and 1 functional type (R' a 3 SiO 0.5) (wherein, R 'is an organic radical ). Further, the hydrolyzable silicon-containing group may be bonded to either the end of the molecule or the middle of the molecular chain.
- the organopolysiloxane is generally represented by Ra SiO 4-a / 2 as an average composition formula (for example, JP-A-2005-194399, JP-A-8-151521, etc.). The above notation followed this.
- the viscosity of the organopolysiloxane [A2] used in the present invention is not particularly limited, but an excessively high viscosity may reduce workability or impair the physical properties of the obtained cured product. It is desirable that the viscosity at ° C is in the range of 0.025 to 100 Pa ⁇ s.
- Such organopolysiloxanes can be produced by known methods, but are manufactured by GE Toshiba Silicone Co., Ltd.'s Tosseal series, Shin-Etsu Chemical Co., Ltd.'s sealant series, and Toray Dow Corning Co., Ltd. Commercially available products such as SH series can be used.
- the curing catalyst [B] contains a complex [C] of a titanium compound [B1] and an ammonium hydroxide [B2].
- the complex [C] is a reaction product that can be obtained by reacting the titanium compound [B1] with the ammonium hydroxide [B2].
- the titanium compound [B1] is represented by the chemical formula (1).
- R 1 is a substituted or unsubstituted hydrocarbon group, n is 1 to 4, A is a ⁇ -diketone group, and at least one of R 1 is an alkyl group having 8 or more carbon atoms.
- R 6- represents an oxyalkylene group represented by the chemical formula (3)
- R 6- represents a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms
- R 7 represents a substituted or unsubstituted hydrocarbon group having 2 to 10 carbon atoms
- m represents an integer of 1 to 10.
- N is, for example, 1, 1.5, 2, 2.5, 3, 3.5, and 4, and may be within the range between any two of the numerical values exemplified here.
- At least one of R 1 is an alkyl group having 8 or more carbon atoms or an oxyalkylene group. At least one of R 1 is preferably a hydrocarbon group (other hydrocarbon group) that is neither an alkyl group having 8 or more carbon atoms nor an oxyalkylene group.
- the carbon number of the other hydrocarbon group is, for example, 1 to 7, preferably 1 to 5. Specifically, the number of carbon atoms is, for example, 1, 2, 3, 4, 5, 6, and 7, and may be within the range between any two of the numerical values exemplified here.
- the other hydrocarbon group is preferably an alkyl group, more preferably a branched alkyl group. The number of other hydrocarbon groups is 0, 1, 2, 3 or 4.
- alkyl group having 8 or more carbon atoms for example, octyl, 2-ethylhexyl, nonyl, decyl and the like are preferable.
- the alkyl group has, for example, 8 to 20 carbon atoms, preferably 8 to 15 carbon atoms.
- the carbon number is, for example, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, and is between any two of the numerical values exemplified here. It may be within the range of.
- the number of atoms in the main chain of the oxyalkylene group represented by the chemical formula (3) is, for example, 4 to 20, more preferably 6 to 14. Specifically, the number of atoms is, for example, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 and is exemplified here. It may be within the range between any two of the given numerical values.
- R 6 is a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms, preferably 1 to 6 and more preferably 1 to 4.
- the hydrocarbon group of R 6 is preferably an alkyl group.
- R 7 is a substituted or unsubstituted hydrocarbon group having 2 to 10 carbon atoms, preferably 2 to 6 and more preferably 2 to 3.
- m is an integer of 1 to 10, preferably 1 to 6, and more preferably 1 to 2.
- the hydrocarbon group of R 7 is preferably an alkylene group.
- Examples of the oxyalkylene group include a group obtained by removing the terminal hydroxyl group from the alcohol shown below.
- examples of such alcohols include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monot-butyl ether, and diethylene glycol monomethyl.
- the oxyalkylene group becomes 2- (2-butoxyethoxy) ethyl, and the alcohol is butyl cellosolve (also known as 2-butoxyethanol). ),
- the oxyalkylene group is 2-butoxyethyl.
- the other substituted or unsubstituted hydrocarbon group represented by R 1 is a substituted or unsubstituted aliphatic or aromatic hydrocarbon group, and an aliphatic hydrocarbon group is preferable.
- the aliphatic hydrocarbon group include saturated or unsaturated hydrocarbon groups.
- As the saturated hydrocarbon group a linear or branched alkyl group is preferable.
- the hydrocarbon group has 1 to 10 carbon atoms, preferably 1 to 6 and even more preferably 1 to 4. Specifically, the number of carbon atoms is, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, and is within the range between any two of the numerical values exemplified here. May be good.
- hydrocarbon group examples include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl and decyl.
- the ⁇ -diketone group represented by A includes 2,4-pentandione, 2,4-hexanedione, 2,4-pentadecandione, 2,2,6,6-tetramethyl-3,5-heptandione, 1 -Phenyl-1,3-butandione, 1-aryl-1,3-butandione such as 1- (4-methoxyphenyl) -1,3-butandione, 1,3-diphenyl-1,3-propanedione, 1, 1,3-Diaryl-1,3-propanedione such as 3-bis (2-pyridyl) -1,3-propanedione, 1,3-bis (4-methoxyphenyl) -1,3-propanedione, 3 -Diketones such as benzyl-2,4-pentandione, ketoesters such as methylacetate, ethylacetate, butylacetate, t-butylacetate, ethyl-3
- titanium compounds represented by the chemical formula (1) tetraisopropoxytitanium, triisopropoxyoctoxytitanium, triisopropoxy2- (2-butoxyethoxy) from the viewpoint of catalytic activity, compound stability, and handleability.
- Ethoxytitanium, triisopropoxy2-butoxyethoxytitanium and the like are preferable.
- the above titanium compound [B1] may be used alone or in combination of two or more.
- Ammonium hydroxide [B2] is represented by the following formula.
- R 2 , R 3 , R 4 , and R 5 represent substituted or unsubstituted hydrocarbon groups having 1 to 8 carbon atoms, which are the same or different from each other.
- X represents a hydroxyl group.
- the substituted or unsubstituted hydrocarbon group represented by R 2 , R 3 , R 4 , R 5 is a substituted or unsubstituted aliphatic or aromatic hydrocarbon group, and an aliphatic hydrocarbon group is preferable.
- an aliphatic hydrocarbon group a linear or branched alkyl group is preferable.
- the hydrocarbon group has 1 to 8 carbon atoms, preferably 1 to 6 and even more preferably 1 to 4. Specifically, the number of carbon atoms is, for example, 1, 2, 3, 4, 5, 6, 7, and 8, and may be within the range between any two of the numerical values exemplified here.
- Examples of the aliphatic hydrocarbon group include a saturated hydrocarbon group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a pentyl group, a hexyl group, a cyclohexyl group, a heptyl group and an octyl group, and vinyl.
- Examples thereof include an unsaturated hydrocarbon group such as a group, an allyl group, a prenyl group, a crotyl group and a cyclopentadienyl group, and a methyl group, an ethyl group and a butyl group are preferable.
- aromatic hydrocarbon group examples include a phenyl group, a tolyl group, a benzyl group and the like.
- substituent of the hydrocarbon group examples include a methoxy group, an ethoxy group, a hydroxy group, an acetoxy group and the like.
- Substituted aliphatic or aromatic hydrocarbon groups include alkoxyalkyl groups such as methoxymethyl group, methoxyethyl group, ethoxymethyl group and ethoxyethyl group, hydroxymethyl group, hydroxyethyl group and 3-hydroxypropyl. Examples thereof include a hydroxyalkyl group such as a group and a 2-acetoxyethyl group.
- ammonium hydroxide represented by the chemical formula (2) examples include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide, and benzyltriethylammonium hydroxy.
- trimethylphenylammonium hydroxide, tris (2-hydroxyethyl) methylammonium hydroxide and the like can be mentioned, and tetrabutylammonium hydroxide is particularly preferable.
- the complex [C] of the titanium compound [B1] and the ammonium hydroxide [B2] is, for example, a transparent liquid, and can be obtained by reacting a mixture of both at, for example, 40 to 100 ° C. Specifically, this temperature is, for example, 40, 50, 60, 70, 80, 90, 100 ° C., and may be in the range between any two of the numerical values exemplified here.
- the molar ratio of the titanium compound [B1] to the ammonium hydroxide [B2] in the mixture is, for example, 0.1 to 100, 0.1, 0.5, 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 20, 50, 100, and may be within the range between any two of the numerical values exemplified here.
- the curing catalyst [B] is a composite of a titanium compound [Ba] other than the titanium compound [B1] and an ammonium hydroxide [B2] in addition to the composite [C] of the titanium compound [B1] and the ammonium hydroxide [B2].
- [Ca] may be contained.
- titanium compound [Ba] examples include those represented by the chemical formula (4).
- (R 1 -O) n Ti- A 4-n (4) (In the formula, R 1 , substituted or unsubstituted hydrocarbon group, n is 1 to 4, A is a ⁇ -diketone group, R 1 is an alkyl group having 8 or more carbon atoms, and is represented by the chemical formula (3). It is neither of the oxyalkylene groups to be formed.)
- the carbon number of R 1 is preferably 7 or less, and more preferably 5 or less.
- R 1 is preferably an alkyl group, more preferably a branched alkyl group.
- Other explanations for the chemical formula (4) are the same as those for the chemical formula (1).
- titanium compound [Ba] examples include tetramethoxytitanium, trimethoxyethoxytitanium, trimethoxyisopropoxytitanium, trimethoxybutoxytitanium, dimethoxydiethoxytitanium, dimethoxydiisopropoxytitanium, dimethoxydibutoxytitanium, methoxytriethoxytitanium, and methoxy.
- the complex [C] has a feature that crystals are less likely to precipitate than the complex [Ca], but the catalytic performance may deteriorate. Therefore, by using the complex [Ca] having excellent catalytic performance and the complex [C] in combination, it is possible to obtain a curing catalyst [B] which is less likely to precipitate crystals and has excellent catalytic performance.
- the ratio of the complex [C] to the total of the complex [C] and the complex [Ca] is, for example, 10 to 90 mol%, preferably 30 to 80 mol%. Specifically, this ratio is, for example, 10, 20, 30, 40, 50, 60, 70, 80, 90 mol%, and may be within the range between any two of the numerical values exemplified here. ..
- the curing catalyst [B] containing the complex [C] and the complex [Ca] can be obtained by reacting the titanium compound [B1] and the titanium compound [Ba] with ammonium hydroxide [B2], respectively.
- the ratio of the titanium compound [B1] to the total of the titanium compound [B1] and the titanium compound [Ba] is, for example, 10 to 90 mol%, preferably 30 to 80 mol%. Specifically, this ratio is, for example, 10, 20, 30, 40, 50, 60, 70, 80, 90 mol%, and may be within the range between any two of the numerical values exemplified here. ..
- the titanium compound [B1] can be obtained by substituting at least one of the ligands of the titanium compound [Ba] with an alkyl group or an oxyalkylene group having 8 or more carbon atoms by an alkoxy exchange reaction.
- the moisture-curable composition of the present invention contains the above-mentioned curing catalyst [B] and polymer [A], and may contain other additives described later, if necessary.
- the moisture-curable composition of the present invention may be prepared by mixing the two under dry conditions, and the mixing form thereof is not particularly limited. Usually, it may be mixed in an atmosphere of about 15 to 30 ° C. and 60% RH or less.
- the content of the curing catalyst [B] is 0.1 to 20 parts by weight, more particularly 0.5 to 10 parts by weight, based on 100 parts by weight of the polymer [A]. 3 to 8 parts by weight is preferable. If the content of the curing catalyst [B] is less than 0.1 parts by weight, the curing performance is insufficient, and if it exceeds 20 parts by weight, the restoration rate of the cured product after curing, physical properties such as weather resistance, and stability during storage. May get worse.
- the content of the curing catalyst [B] is, for example, 0.1, 0.5, 1, 2, 3, 4, 5, 6, 7, with respect to 100 parts by weight of the polymer [A]. It is 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 parts by mass, and may be within the range between any two of the numerical values exemplified here.
- the filler [C] may be further added to the moisture-curable composition of the present invention.
- the filler include calcium carbonate, kaolin, talc, fumed silica, precipitated silica, silicic acid anhydride, hydrous silicic acid, clay, calcined clay, glass, bentonite, organic bentonite, silasburn, glass fiber, asbestos, and the like. Examples thereof include glass filament, crushed quartz, diatomaceous earth, aluminum silicate, aluminum hydroxide, zinc oxide, magnesium oxide, titanium dioxide and the like.
- the filler may be used alone or in combination of two or more.
- the addition of the filler improves the handling of the moisture-curable composition. It also works as a rubber reinforcing agent for cured products. The biggest merit is that the amount of resin used can be reduced by adding it as a bulking agent, so that the cost can be reduced.
- calcium carbonate and titanium oxide are preferable from the viewpoint of maintaining excellent surface non-tack, 50% modulus, workability, weather resistance and the like of the curable composition after curing.
- the ratio thereof is preferably 1 to 200 parts by weight, more preferably 50 to 200 parts by weight, based on 100 parts by weight of the polymer [A]. Within the above range, the characteristics after curing are not impaired.
- the moisture-curable composition of the present invention other curing catalysts, curing accelerators, colorants, plasticizers, curing retarders, sagging inhibitors, antiaging agents, solvents and the like are usually added to the curable composition. Additives may be added.
- curing catalysts examples include organic tin compounds such as dibutyltin dilaurate and dibutyltin bis (acetylacetonate), organic aluminum compounds such as aluminumtris (acetylacetonate) and aluminumtris (ethylacetoacetate), and zirconium tetra (acetyl).
- organic tin compounds such as dibutyltin dilaurate and dibutyltin bis (acetylacetonate)
- organic aluminum compounds such as aluminumtris (acetylacetonate) and aluminumtris (ethylacetoacetate)
- zirconium tetra acetyl
- organic zirconium compounds such as zirconite tetrabutyrate
- metal curing catalysts such as 1-amino-2-ethylhexane, 3- (trimethoxysilyl) propylamine, N-2-aminoethyl-3-aminopropyl Trimethoxysilane, N, N, N', N'-tetramethyl-N''-[3- (trimethoxysilyl) propyl] guanidine, 1,5,7-triazabicyclo- [4,4,0]
- Examples thereof include amine compounds such as deca-5-ene and 3-triethoxysilyl-N- (1,3-dimethylbutylidene) propylamine.
- the curing accelerator for example, various known amino group-substituted alkoxysilane compounds or condensates thereof can be used. Specifically, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, N- (trimethoxysilylpropyl) ethylenediamine, ⁇ -aminobutyl (methyl) diethoxysilane, N, N-bis (tri). Examples thereof include methoxysilylpropyl) ethylenediamine and partial hydrolysis of these, which also have the effect of improving the adhesion to the substrate.
- iron oxide, carbon black, phthalocyanine blue, phthalocyanine green, etc. are used as the colorant.
- plasticizer examples include phthalates such as dibutylphthalate, dioctylphthalate, and butylbenzylphthalate; fatty acid carboxylic acid esters such as dioctyl adipate, dioctyl succinate, diisodecyl succinate, and butyl oleate; penta.
- Glycol esters such as erythritol esters; phosphate esters such as trioctyl phosphate and tricresyl phosphate; epoxy plasticizers such as epoxidized soybean oil and benzyl epoxy stearate; chlorinated paraffin and the like are used.
- hydrogenated castor oil silicic acid anhydride, organic bentonite, colloidal silica, etc. are used as the sagging preventive agent.
- adhesion-imparting agents such as phenol resins and epoxy resins, ultraviolet absorbers, radical chain inhibitors, peroxide decomposition agents, various antiaging agents, etc. are used.
- the curable composition of the present invention is sufficiently stable at room temperature and therefore has excellent storability, and when it comes into contact with moisture, the curing reaction spontaneously proceeds by the compounded curing catalyst [B].
- the snap time (time until semi-gelation and loss of fluidity) and tack free time (time until surface tack disappears) are short, and workability is excellent.
- the curable composition of the present invention can be used as a one-component sealing material. Specifically, it is suitably used for applications such as sealing materials for vehicles such as buildings, ships, and automobiles, adhesives, sealing agents, and sealing materials for waterproofing.
- the chemical shift of 3.42-3.38 of complex 3 belongs to the ⁇ -hydrogen atom (hydrogen atom of N-CH2) of the butyl group of TBAH. In the complex 3, it was confirmed that the chemical shift of the ⁇ -hydrogen atom was + 0.07 ppm as compared with TBAH.
- the chemical shift of 3.42-3.38 of complex 4 belongs to the ⁇ -hydrogen atom (hydrogen atom of N-CH2) of the butyl group of TBAH. In the complex 4, it was confirmed that the chemical shift of the ⁇ -hydrogen atom was + 0.07 ppm as compared with TBAH.
- the chemical shift of 3.42-3.38 of the complex 13 belongs to the ⁇ -hydrogen atom (hydrogen atom of N-CH2) of the butyl group of TBAH. In the complex 13, it was confirmed that the chemical shift of the ⁇ -hydrogen atom was + 0.07 ppm as compared with TBAH.
- tack-free time (the time required from the end of kneading until the sample did not adhere to the fingertips by lightly touching three points on the surface with a fingertip cleaned with ethyl alcohol) was measured for the obtained moisture-curable composition. ..
- the results of the tack free time measurement are shown in Tables 1 and 2.
- the titanium compound [B1] and the titanium compound [Ba] coexist in the system, and when the reaction with the ammonium hydroxide [B2] is allowed to proceed in this state, the complex [C] and the complex [Ca] are allowed to proceed. ] Both are generated. Therefore, the complex 2 is a mixture of the complex [C] and the complex [Ca]. Since the complex [Ca] has a higher catalytic activity than the complex [C], the tack free time of Example 2 is shorter than that of Example 1.
- MS Polymer SAX520 Organic Polymer Containing a Cyril Group (manufactured by Kaneka Corporation)
- MS Polymer S303 Cyril group-containing organic polymer (manufactured by Kaneka Corporation)
- STP-E15 Cyril group-containing organic polymer (manufactured by WACKER Chemical Corporation)
- KE-66 Organopolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.)
- Tetraisopropoxytitanium manufactured by Tokyo Chemical Industry Co., Ltd.
- Tetrabutylammonium hydroxide 37% tetrabutylammonium hydroxide manufactured by Tokyo Chemical Industry Co., Ltd.
- Carlex 300 Calcium carbonate (manufactured by Maruo Calcium Co., Ltd.)
- FR-41 Titanium oxide (manufactured by Furukawa Chemicals Co., Ltd.)
- REOLOSIL PM-20 Fumed Silica (manufactured by Tokuyama Corporation)
- DINP Plasticizer (manufactured by J-PLUS Co., Ltd.)
- PPG1000 Plasticizer (manufactured by Kishida Chemical Co., Ltd.)
- Disparon 6500 Anti-sauce agent (manufactured by Kusumoto Chemical Co., Ltd.)
- Hydrogenated castor oil anti-sauce agent (manufactured by Itoh Oil Chemicals, Inc.)
- Songsorb 3260P UV absorber (manufactured by SONGWON) Sabostab UV70: Light stabilizer (manufactured by SONGWON)
- Irganox245 Antioxidant (manufactured by BASF Japan Ltd.)
- KBM-1003 Dehydrating agent (manufactured by Shinetsu Silicone Industry Co., Ltd.)
- KBM-903 Adhesive-imparting agent (manufactured by Shin-Etsu Silicone Industry Co., Ltd.)
- KBM-603 Adhesive-impart
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Abstract
Description
シリコーン系ゴムの1液型の湿気硬化型ゴム組成物として、オルガノポリシロキサン組成物が広範囲に使用されており、室温で硬化してゴム弾性体を生成する。オルガノシロキサンが架橋重合した-Si-O-結合を主鎖とするシロキサンの高分子化合物は、撥水性、耐熱性、耐候性、耐寒性、電気絶縁性等の性質に優れていることから建築、土木工業、電気、電子工業、自動車工業等の分野で広く使用されている。
特許文献5では、第4級アンモニウム塩を触媒として使用することが提案されているが、施工時に充分な硬化速度が得られないという問題点がある。
前記硬化触媒[B]は、チタン化合物[B1]とアンモニウムヒドロキシド[B2]の複合体[C]を含有し、
前記チタン化合物[B1]は、化学式(1)で表され、
前記アンモニウムヒドロキシド[B2]は、化学式(2)で表される、硬化触媒[B]が提供される。
重合体[A]は、反応性加水分解性ケイ素含有基を、分子末端または側鎖に1分子当たり少なくとも1個有する。反応性加水分解性ケイ素含有基は、重合体[A]分子の末端に存在していても、側鎖に存在していてもよく、さらに末端と側鎖の両方に存在していてもよい。反応性加水分解性ケイ素含有基は、重合体[A]の1分子当たり少なくとも1個あればよいが、硬化速度、硬化物性の点からは、1分子当たり平均して1.5個以上あるのが好ましい。反応性加水分解性ケイ素含有基を前記主鎖重合体に結合させる方法としては公知の方法が採用できる。
反応性加水分解性ケイ素含有基がジアルコキシシリル基である重合体[A]と、トリアルコキシシリル基である重合体[A]を併用すると、硬化物の物性と硬化性とのバランスが取れ好ましい。
本発明に用いる有機重合体[A1]の主鎖としては炭素原子を有するもの、例えば、アルキレンオキシド重合体、ポリエステル重合体、エーテル・エステルブロック共重合体、エチレン性不飽和化合物の重合体、ジエン系化合物の重合体などが挙げられる。
〔CH2CH2O〕n
〔CH(CH3)CH2O〕n
〔CH(C2H5)CH2O〕n
〔CH2CH2CH2CH2O〕n
などの繰り返し単位の1種または2種以上を有するものが例示される。ここで、nは同一又は異なって2以上の整数である。これらアルキレンオキシド重合体は単独で用いてもよく、2種以上を併用してもよい。また、上記の繰り返し単位を2種以上含む共重合体も使用できる。
本発明に用いるオルガノポリシロキサン[A2]は、主鎖がSi-Oで表されるシロキサン結合で構成されたものであり、さらにシロキサン結合を構成するケイ素原子に有機基が結合している。このような有機基としては、具体的にはメチル、エチル、プロピル、ブチル等のアルキル基;シクロヘキシル等のシクロアルキル基;ビニル、イソプロペニル、置換ビニル等のアルケニル基;アリル基、クロチル、メタリル等の置換アリル基;フェニル、トルイル、キシリル等のアリール基;ベンジル、フェニルエチル等のアラルキル基;及びこれら有機基の水素原子の全部もしくは一部がハロゲン原子で置換された基、例えばクロロメチル基、3,3,3-トリフルオロプロピル基などが挙げられる。
(-Si(R)2-O-)m
(式中、Rは同一又は異なって有機基、mは2以上の整数を示す。)
で表される繰り返し単位を有するものが例示される。具体例としては、
(-Si(CH3)2-O-)m
(-Si(C2H5)2-O-)m
(-Si(Ph)2-O-)m
(-Si(-CH=CH2)2-O-)m
などの繰り返し単位の1種または2種以上を有するものが例示される。ここでmは同一又は異なって2以上の整数である。オルガノポリシロキサン[A2]は単独の主鎖から構成されていてもよく、あるいは2種以上の主鎖から構成されていてもよい。
なお、オルガノポリシロキサンは一般的に平均組成式としてRaSiO4-a/2で示される(例えば、特開2005-194399号や特開平8-151521号公報等)。上記の表記はこれに従った。
硬化触媒[B]は、チタン化合物[B1]とアンモニウムヒドロキシド[B2]の複合体[C]を含有する。複合体[C]は、チタン化合物[B1]とアンモニウムヒドロキシド[B2]を反応させることによって得ることができる反応生成物である。
チタン化合物[B1]は、化学式(1)で表される。
(R1-O)nTi-A4-n (1)
(式中R1は、置換又は非置換の炭化水素基、nは1~4であり、Aはβジケトン基であり、且つ、R1の少なくとも1つは、炭素数8以上のアルキル基、または、化学式(3)で表されるオキシアルキレン基を表す)
R6-(O-R7)m- (3)
(式中R6は炭素原子数1~10の置換または非置換の炭化水素基、R7は炭素原子数2~10の置換または非置換の炭化水素基、mは1~10の整数を表す)
上記のチタン化合物[B1]は、単独で使用してもよいし、2種以上を併用してもよい。
アンモニウムヒドロキシド[B2]は、下記式で表される。
チタン化合物[B1]とアンモニウムヒドロキシド[B2]の複合体[C]は、例えば透明液体であり、両者の混合物を例えば40~100℃で反応させることによって得ることができる。この温度は、具体的には例えば、40、50、60、70、80、90、100℃であり、ここで例示した数値の何れか2つの間の範囲内であってもよい。混合物中での、アンモニウムヒドロキシド[B2]に対するチタン化合物[B1]のモル比は、例えば0.1~100であり、0.1、0.5、1、2、3、4、5、6、7、8、9、10、20、50、100であり、ここで例示した数値の何れか2つの間の範囲内であってもよい。
硬化触媒[B]は、チタン化合物[B1]とアンモニウムヒドロキシド[B2]の複合体[C]以外に、チタン化合物[B1]以外のチタン化合物[Ba]とアンモニウムヒドロキシド[B2]の複合体[Ca]を含んでもよい。
(R1-O)nTi-A4-n (4)
(式中R1、置換又は非置換の炭化水素基、nは1~4であり、Aはβジケトン基であり、R1は、炭素数8以上のアルキル基と、化学式(3)で表されるオキシアルキレン基の何れでもない。)
本発明の湿気硬化型組成物は、上記の硬化触媒[B]と重合体[A]を含み、必要に応じ後述する他の添加剤を含めても良い。本発明の湿気硬化型組成物の調製は、乾燥条件下で両者を混合すればよく、その混合形態は特に限定はない。通常、温度15~30℃程度、60%RH以下の雰囲気下で混合すればよい。
100mLナスフラスコに、テトライソプロポキシチタン:17.05g(0.06mol)、1-オクタノール:7.97g(0.06mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール3.61g(0.06mol)を留出させて100mLナスフラスコ内に無色液体21.12gを得た。
1H NMR (400 MHz CDCl3): 3.42-3.37 (m, 8H), 1.73-1.65 (m, 8H), 1.47 (q, J = 7.4 Hz, 8H), 1.01 (t, J = 7.4 Hz, 12H), δ=0 (TMS)
1H NMR (400 MHz CDCl3): δ=3.35-3.31 (m, 8H), δ=1.70-1.64(m, 8H), δ=1.46 (q, 7.4Hz,8H), δ=1.02 (t, 7.4Hz, 12H), δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:17.04g(0.06mol)、1-オクタノール:4.40g(0.034mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール2.04g(0.034mol)を留出させて100mLナスフラスコ内に無色液体19.06gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.35 (m, 8H), 1.78-1.65 (m, 8H), 1.47 (td, J = 14.8, 7.3 Hz, 8H), 1.01 (t, J = 7.4 Hz, 12H), δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:8.52g(0.03mol)、1-オクタノール:2.20g(0.017mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール1.02g(0.017mol)を留出させて100mLナスフラスコ内に無色液体9.57gを得た。
1H NMR (400 MHz CDCl3): δ=3.42-3.38 (m, 8H), 1.72-1.68 (m, 8H), 1.50-1.44 (m, 8H), 1.01 (t, J = 7.4 Hz, 12H), δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:6.00g(0.021mol)、1-オクタノール:2.20g(0.017mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール1.02g(0.017mol)を留出させて100mLナスフラスコ内に無色液体6.86gを得た。
1H NMR (400 MHz CDCl3): δ=3.42-3.38 (m, 8H), 1.71-1.68 (m, 8H), 1.50-1.44 (m, 8H), 1.01 (t, J = 7.4 Hz, 12H), δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:17.05g(0.06mol)、ブチルセロソルブ:7.09g(0.06mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール3.61g(0.06mol)を留出させて100mLナスフラスコ内に無色液体20.54gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.37 (m, 8H), 1.73-1.65 (m, 8H), 1.47 (td, J = 14.8, 7.5 Hz, 8H), 1.01 (t, J = 7.3 Hz, 12H), δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:17.05g(0.06mol)、ブチルセロソルブ:4.40g(0.037mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール2.24g(0.037mol)を留出させて100mLナスフラスコ内に無色液体18.61gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.37 (m, 8H), 1.71-1.67 (m, 8H), 1.47 (q, J = 7.3 Hz, 8H), 1.01 (t, J = 7.3 Hz, 12H),δ=0 (TMS)
100mLナスフラスコに、テトライソプロポキシチタン:8.52g(0.03mol)、メチルカルビトール:2.20g(0.018mol)の順に仕込み、窒素置換したのち、均一になるよう10分間攪拌した。その後、80℃のウォーターバスで加熱し、減圧濃縮(最終減圧度50mmHg)してイソプロパノール1.08g(0.018mol)を留出させて100mLナスフラスコ内に無色液体9.40gを得た。
1H NMR (400 MHz CDCl3): δ=3.42-3.38 (m, 8H), δ=1.74-1.66 (m, 8H), δ=1.47 (td, 7.4Hz,8H), δ=1.01 (t, 7.4Hz,12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:48.26g(0.17mol)、ブチルカルビトール:27.55g(0.17mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度12mmHg)してイソプロパノール10.2g(0.17mol)を留出させて200mL4つ口丸底フラスコ内に無色液体65.10gを得た。
1H NMR (400 MHz CDCl3): 3.48-3.43 (m, 5H), 3.41-3.37 (m, 8H),1.74-1.66 (m, 8H), 1.47 (td, J = 14.8, 7.4 Hz, 8H), 1.02 (t, J = 7.3 Hz, 12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:58.0g(0.20mol)、ブチルカルビトール:15.0g(0.092mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度7mmHg)してイソプロパノールを5.53g(0.092mol)留出させて200mL4つ口丸底フラスコ内に無色液体66.84gを得た。
1H NMR (400 MHz CDCl3): 3.42-3.37 (m, 8H), 1.73-1.65 (m, 8H), 1.61-1.41 (m, 1.5H), 1.47 (td, J = 14.8, 7.5 Hz, 8H), 1.01 (t, J = 7.4 Hz, 12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:50.0g(0.176mol)、ブチルカルビトール:57.08g(0.352mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度7mmHg)してイソプロパノール21.16g(0.352mol)を留出させて200mL4つ口丸底フラスコ内に無色液体85.92gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.37 (m, 8H),1.74-1.66 (m, 8H), 1.47 (td, J = 14.8, 7.4 Hz, 8H), 1.02 (t, J = 7.3 Hz, 12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:48.26g(0.17mol)、ブチルカルビトール:27.55g(0.17mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度12mmHg)してイソプロパノール10.22g(0.17mol)を留出させて200mL4つ口丸底フラスコ内に無色液体65.10gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.37 (m, 8H), 1.74-1.66 (m, 8H), 1.47 (td, J = 14.8, 7.4 Hz, 8H), 1.02 (t, J = 7.3 Hz, 12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:38.7g(0.136mol)、ブチルカルビトール:10.0g(0.062mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度7mmHg)してイソプロパノール3.73g(0.062mol)を留出させて200mL4つ口丸底フラスコ内に無色液体44.56gを得た。
1H NMR (400 MHz CDCl3): 3.41-3.37 (m, 8H), 1.73-1.65 (m, 8H), 1.47 (q, J = 7.3 Hz, 8H), 1.01 (t, J = 7.3 Hz, 12H), δ=0 (TMS)
窒素導入管を取り付けた200mL4つ口丸底フラスコに、テトライソプロポキシチタン:48.26g(0.17mol)、ブチルカルビトール:27.55g(0.17mol)の順に仕込み、油浴で加熱し内温80℃になるまで攪拌した。その後、減圧濃縮(最終減圧度12mmHg)してイソプロパノール10.22g(0.17mol)を留出させて200mL4つ口丸底フラスコ内に無色液体65.10gを得た。
1H NMR (400 MHz CDCl3): δ=3.42-3.38 (m, 8H), 1.74-1.66 (m, 8H), 1.52-1.42 (m, 8H), 1.01 (t, 7.4 Hz, 12H), δ=0 (TMS)
上記製造例で得た各成分及び市販の成分を用い、表1に示す配合割合(質量部)で配合し、混練して湿気硬化型組成物を調製した。なお、材料の配合、混練、硬化までの操作は25±1℃、50~60%RHの雰囲気下で行った。
得られた湿気硬化型組成物について、タックフリータイム(エチルアルコールで清浄した指先で、表面の3箇所に軽く触れ、混練終了時から試料が指先に付着しなくなるまでに要した時間)を測定した。タックフリータイムの測定の結果を表1~表2に示す。
MSポリマー SAX520:シリル基含有有機重合体((株)カネカ製)
MSポリマー S303:シリル基含有有機重合体((株)カネカ製)
STP-E15:シリル基含有有機重合体(WACKER Chemical Corporation製)
KE-66:オルガノポリシロキサン(信越化学工業(株)製)
複合体1:製造例1で製造したもの
複合体2:製造例2で製造したもの
複合体3:製造例3で製造したもの
複合体4:製造例4で製造したもの
複合体5:製造例5で製造したもの
複合体6:製造例6で製造したもの
複合体7:製造例7で製造したもの
複合体8:製造例8で製造したもの
複合体9:製造例9で製造したもの
複合体10:製造例10で製造したもの
複合体11:製造例11で製造したもの
複合体12:製造例12で製造したもの
複合体13:製造例13で製造したもの
テトライソプロポキシチタン:東京化成工業(株)製
テトラブチルアンモニウムヒドロキシド:37%テトラブチルアンモニウムヒドロキシド、東京化成工業(株)製
カーレックス300:炭酸カルシウム(丸尾カルシウム(株)製)
FR-41:酸化チタン(古河ケミカルズ(株)製)
REOLOSIL PM-20:ヒュームドシリカ((株)トクヤマ製)
DINP:可塑剤(ジェイプラス(株)製)
PPG1000:可塑剤(キシダ化学(株)製)
ディスパロン6500:タレ止め剤(楠本化学(株)製)
水添ひまし油:タレ止め剤(伊藤製油(株)製)
Songsorb 3260P:紫外線吸収剤(SONGWON製)
Sabostab UV70:光安定化剤(SONGWON製)
Irganox245:酸化防止剤(BASFジャパン(株)製)
KBM-1003:脱水剤(信越シリコーン工業(株)製)
KBM-903:接着付与剤(信越シリコーン工業(株)製)
KBM-603:接着付与剤(信越シリコーン工業(株)製)
ノクラックNS-6:老化防止剤(大内新興化学工業(株)製)
スモイルP-350:流動パラフィン(村松石油(株)製)
上記製造例の複合体と、テトライソプロポキシチタンを窒素雰囲気下にて、10℃1週間静置し、結晶析出の有無を確認した。その結果を表3に示す。
Claims (6)
- 反応性加水分解性ケイ素含有基を有する重合体[A]の硬化に用いる硬化触媒[B]であって、
前記硬化触媒[B]は、チタン化合物[B1]とアンモニウムヒドロキシド[B2]の複合体[C]を含有し、
前記チタン化合物[B1]は、化学式(1)で表され、
前記アンモニウムヒドロキシド[B2]は、化学式(2)で表される、硬化触媒[B]。
(R1-O)nTi-A4-n (1)
(式中R1は、置換又は非置換の炭化水素基、nは1~4であり、Aはβジケトン基であり、且つ、R1の少なくとも1つは、炭素数8以上のアルキル基、または、化学式(3)で表されるオキシアルキレン基を表す)
(式中、R2、R3、R4、R5は、相互に同一または異なって、炭素原子数1~8の置換又は非置換の炭化水素基を表す。Xは、水酸基を表す。)
R6-(O-R7)m- (3)
(式中R6は炭素原子数1~10の置換または非置換の炭化水素基、R7は炭素原子数2~10の置換または非置換の炭化水素基、mは1~10の整数を表す) - 請求項1に記載の硬化触媒[B]であって、
前記複合体[C]は、前記チタン化合物[B1]と前記アンモニウムヒドロキシド[B2]の混合物を40~100℃で反応させて得られる複合体[C]である、硬化触媒[B]。 - 請求項2に記載の硬化触媒[B]であって、
前記混合物中での、前記アンモニウムヒドロキシド[B2]に対する前記チタン化合物[B1]のモル比は、0.1~100である、硬化触媒[B]。 - 請求項1~請求項3の何れか1つに記載の硬化触媒[B]と、前記重合体[A]を含む湿気硬化型組成物。
- 請求項4に記載の湿気硬化型組成物を湿気と接触させる工程を備える、硬化物の製造方法。
- 反応性加水分解性ケイ素含有基を有する重合体[A]の硬化に用いる硬化触媒[B]の製造方法であって、
チタン化合物[B1]とアンモニウムヒドロキシド[B2]を反応させることによって、その反応性生物として前記硬化触媒[B]を得る工程を備え、
前記チタン化合物[B1]は、化学式(1)で表され、
前記アンモニウムヒドロキシド[B2]は、化学式(2)で表される、硬化触媒[B]の製造方法。
(R1-O)nTi-A4-n (1)
(式中R1は、置換又は非置換の炭化水素基、nは1~4であり、Aはβジケトン基であり、且つ、R1の少なくとも1つは、炭素数8以上のアルキル基、または、化学式(3)で表されるオキシアルキレン基を表す)
(式中、R2、R3、R4、R5は、相互に同一または異なって、炭素原子数1~8の置換又は非置換の炭化水素基を表す。Xは、水酸基を表す。)
R6-(O-R7)m- (3)
(式中R6は炭素原子数1~10の置換または非置換の炭化水素基、R7は炭素原子数2~10の置換または非置換の炭化水素基、mは1~10の整数を表す)
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| JP7588881B2 (ja) | 2020-06-29 | 2024-11-25 | 日東化成株式会社 | 重合体の硬化に用いる硬化触媒の製造方法 |
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| EP4067338A4 (en) * | 2019-11-29 | 2023-02-08 | Nitto Kasei Co., Ltd. | CURING CATALYST USED FOR CURING A POLYMER, PRODUCTION PROCESS FOR SUCH CURING CATALYST, MOISTURE-CURRABLE COMPOSITION AND PRODUCTION PROCESS FOR CURED ARTICLE |
| US12285742B2 (en) | 2019-11-29 | 2025-04-29 | Nitto Kasei Co., Ltd. | Curing catalyst used for curing of polymer, production method for said curing catalyst, moisture-curable composition, and production method for cured article |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4174052B1 (en) | 2025-11-26 |
| CN115461414A (zh) | 2022-12-09 |
| JP7588880B2 (ja) | 2024-11-25 |
| EP4174052A4 (en) | 2023-11-29 |
| JPWO2022004510A1 (ja) | 2022-01-06 |
| CN115461414B (zh) | 2024-06-25 |
| EP4174052A1 (en) | 2023-05-03 |
| US20230257487A1 (en) | 2023-08-17 |
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