WO2005108499A1 - 硬化性と接着性の改善された硬化性組成物 - Google Patents
硬化性と接着性の改善された硬化性組成物 Download PDFInfo
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- WO2005108499A1 WO2005108499A1 PCT/JP2005/007804 JP2005007804W WO2005108499A1 WO 2005108499 A1 WO2005108499 A1 WO 2005108499A1 JP 2005007804 W JP2005007804 W JP 2005007804W WO 2005108499 A1 WO2005108499 A1 WO 2005108499A1
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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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
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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
- C08K5/0091—Complexes with metal-heteroatom-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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
- C09J171/02—Polyalkylene oxides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
Definitions
- the present invention relates to a silicon-containing group having a hydroxyl group or a hydrolyzable group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond (hereinafter, also referred to as “reactive silicon group”).
- the present invention relates to a curable composition containing an organic polymer having the formula (1).
- An organic polymer having a reactive silicon group in the molecule has a characteristic that it reacts with moisture in the air and cures into a rubber even at room temperature.
- organic polymers having a reactive silicon group in the molecule an organic polymer whose main chain skeleton is a polyoxyalkylene polymer is disclosed in (Patent Document 1) and the like.
- This polyoxyalkylene polymer has already been industrially produced and is widely used for applications such as sealing materials and adhesives.
- a typical example of such an organic polymer usually has a reactive silicon group in which two hydrolyzable groups are bonded to one silicon atom in order to maintain elongation and flexibility.
- the curable composition containing the above organic polymer is cured using a silanol condensation catalyst, and an organic tin catalyst such as dibutyltin bisacetylacetonate is widely used.
- an organic tin catalyst such as dibutyltin bisacetylacetonate
- a dealcoholized silicone composition using a titanium catalyst as the non-organic tin catalyst is disclosed in (Patent Document 2), (Patent Document 3) and the like.
- This dealcoholized silicone composition has already been industrially produced and is widely used for many purposes.
- Patent Document 4 a curable composition obtained by combining a titanium catalyst, an aluminum catalyst, or a zirconium catalyst as a curing catalyst with respect to an organic polymer containing a reactive silicon group
- Patent Documents 5 Patent Documents 5
- Patent Document 6 Patent Document 6
- Patent Document 7 a curable composition obtained by combining a titanium catalyst, an aluminum catalyst, or a zirconium catalyst as a curing catalyst with respect to an organic polymer containing a reactive silicon group
- Patent Document 1 JP-A-52-73998
- Patent Document 2 Japanese Patent Publication No. 39-27643 (US Patent No. 3175993)
- Patent Document 3 US Patent No. 3334067
- Patent Document 4 JP-A-2002-249672
- Patent Document 5 JP-A-58-17154 (JP-B-3-57943)
- Patent Document 6 Japanese Patent Application Laid-Open No. 62-146959 (Japanese Patent Publication No. 5-45635)
- Patent Document 7 JP-A-2004-51809
- a curable composition disclosed in (Patent Document 4) or the like that is, an organic polymer containing a reactive silicon group, a titanium catalyst, an aluminum catalyst, or a zirconium catalyst is used as a curing catalyst.
- a titanium catalyst, an aluminum catalyst, or a zirconium catalyst is used as a curing catalyst for an organic polymer having a reactive silicon group, remarkable curability is caused by a low molecular weight compound having a hydrolyzable silicon group to be added.
- the curing rate is lower, and the curing speed is lower than in the case of the organotin-based compounds generally used at present, so that it may not have practical curability.
- the polyoxyalkylene-based polymer containing a reactive silicon group using the organotin catalyst has good adhesiveness to various adherends. In some cases, it may not be possible to obtain sufficient adhesion to hard-to-adhesive organic adherends such as acrylic resin.
- the present invention has improved curability and adhesion, including an organic polymer having a reactive silicon group and at least one selected from a titanium catalyst, an aluminum catalyst, and a zirconium catalyst, which are non-tin curing catalysts. It is intended to provide a curable composition.
- the present inventors have conducted intensive studies to solve such a problem, and as a result, as an organic polymer having a reactive silicon group, three hydroxyl groups or hydrolyzable groups per silicon atom.
- the titanium atom and the aluminum atom of the catalyst can be further reduced.
- the present invention provides, as a silicon-containing group capable of crosslinking by forming a siloxane bond, a compound represented by the general formula (1):
- Curable composition containing (A), titanium catalyst, aluminum catalyst, zirconium catalytic power, at least one selected (B), and low molecular weight compound having a hydrolyzable silicon group and having a molecular weight of 100 to 1000 (C) And the ratio (aZb) of the total number of moles (a) of the titanium, aluminum and zirconium atoms of component (B) to the total number of moles of silicon (b) of component (C) A curable composition larger than 0.08.
- the low molecular weight conjugate of (C) is preferably a silane conjugate having an amino group.
- a preferable blending ratio of (A), (B) and (C) is one or more selected from a titanium catalyst, an aluminum catalyst, and a zirconium catalyst based on 100 parts by weight of the organic polymer (A).
- the main chain skeleton of the organic polymer (A) includes at least one selected from the group consisting of polyoxyalkylene-based polymers, saturated hydrocarbon-based polymers, and (meth) acrylate-based polymers. preferable.
- the glass transition temperature of the organic polymer (A) is preferably 20 ° C. or lower.
- the titanium catalyst has a general formula (2):
- R 1 is an organic group and the four R 1 s may be the same or different from one another, and are more preferably titanium chelates.
- the titanium chelate is represented by the general formula (3)
- R 3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms
- R 2 and R 3 may be the same or different.
- n R 2 are identical to each other, Yogu 4 n pieces of R 3 be made different even be identical to one another or may be different.
- AA 2 is selected as —R 4 or —OR 4 (where R 4 is a hydrocarbon group having 1 to 20 carbon atoms).
- a 1 and A 2 may be the same or different.
- 4-n pieces of A 1 is a same each other, the Yogu 4-n-number of A 2 be different from be the same to each other or may be different.
- n is 0, 1, 2, or 3.
- R 5 is a divalent hydrocarbon group having 1 to 20 carbon atoms. ) Is preferred.
- R 6 is an organic group and the three R 6 s may be the same or different from each other, and are more preferably aluminum chelates.
- aluminum chelate general formula (6):
- R 8 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms
- R 7 and R 8 may be the same or different.
- the m R 7 are the same to each other, it may be made different, the 3- m-number of R 8 may be identical to one another or may be different.
- the —R 9 or —OR 9 force is also selected (where R 9 is a hydrocarbon group having 1 to 20 carbon atoms).
- a 3 and A 4 may be the same or different.
- the 3- m pieces of A 3 have the same mutually, or different, is 3- m pieces of A 4 may be identical to one another or may be different dates.
- m is 0, 1, or 2.
- the zirconium catalyst has a general formula (8):
- R 11 is an organic group and the four R 11 s may be the same or different from each other, and are more preferably a zirconium chelate.
- zirconium chelate a compound represented by the general formula (9)
- R 1 and R ′′ are a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms
- R 13 may be the same or different.
- One R 12 may be the same or different from each other 4-1
- R 13 may be the same or different from each other
- a 5 and A 6 may be —R 14 or — Selected from OR 14 (where R 14 is a hydrocarbon group having 1 to 20 carbon atoms)
- a 5 and A 6 may be the same or different 4-1 A 5 May be the same or different from each other 4-1
- a 6 may be the same as or different from each other 1 is 0, 1, 2, or 3
- R 15 is a divalent hydrocarbon group having 1 to 20 carbon atoms.
- a titanium catalyst is preferred.
- R 16 is a substituted or unsubstituted hydrocarbon group, and three R 16 are mutually the same. Or a different one), and more preferably a trimethoxysilyl group.
- Preferred embodiments of the curable composition according to the present invention include a sealant or an adhesive using the curable composition described in any of the above.
- a sealant or adhesive with improved curability and adhesion including a non-tin curing catalyst such as a titanium catalyst, an aluminum catalyst, or an organic polymer having a reactive silicon group with a zirconium catalyst.
- a curable composition can be provided.
- the main chain skeleton of the organic polymer having a reactive silicon group used in the present invention is not particularly limited, and those having various main chain skeletons can be used.
- polyoxyalkylene-based polymers such as polyoxyethylene, polyoxypropylene, polyoxybutylene, polyoxytetramethylene, polyoxyethylene polyoxypropylene copolymer, and polyoxypropylene polyoxybutylene copolymer Copolymers: Ethylene Propylene copolymer, polyisobutylene, copolymer of isobutylene and isoprene, copolymer of polychloroprene, polyisoprene, isoprene or butadiene with Atari-tolyl and Z or styrene Hydrocarbon polymers such as polybutadiene, isoprene or a copolymer of butadiene with acrylonitrile and styrene, hydrogenated polyolefin polymers obtained by hydrogenating these polyolefin polymers; and adipic acid, etc.
- Ethylene Propylene copolymer polyisobutylene, copolymer of isobutylene
- Dibasic acid and Dalicol Polyester polymer obtained by condensation of methacrylate or ring-opening polymerization of ratatatones; (meth) acrylate obtained by radical polymerization of monomers such as ethyl (meth) acrylate and butyl (meth) acrylate -Based polymer; (meth) acrylic acid ester-based monomer, vinyl polymer obtained by radical polymerization of monomers such as butyl acetate, acrylonitrile, and styrene;-obtained by polymerizing vinyl monomer in the organic polymer Graft polymer; Polysulfide polymer; Nylon 6 by ring-opening polymerization of ⁇ -proprotamata, Nylon 6.6 by condensation polymerization of hexamethylene diamine and adipic acid, Nylon 6.6 by hexamethylene diamine and sebacic acid Nylon 6, 10 by condensation polymerization, ⁇ aminoun Polyamide-based polymers such as nylon 11 by condensation polymerization of de
- saturated hydrocarbon polymers such as polyisobutylene, hydrogenated polyisoprene, and hydrogenated polybutadiene, polyoxyalkylene polymers, and (meth) acrylate polymers have relatively high glass transition temperatures. It is more preferable that the obtained cured product is excellent in cold resistance.
- the glass transition temperature of the organic polymer as the component (A) is not particularly limited, but is preferably 20 ° C or lower, more preferably 0 ° C or lower, more preferably 20 ° C or lower. It is particularly preferred that it is C or less. If the glass transition temperature is higher than 20 ° C, the viscosity in winter or in a cold region may increase and the workability may deteriorate, and the flexibility of the cured product may decrease and the elongation may decrease.
- the glass transition temperature is a value measured by DSC.
- the low molecular weight compound having at least one selected from the group consisting of a titanium catalyst, an aluminum catalyst and a zirconium catalyst as the component (B) of the present invention and a hydrolyzable silicon group as the component (C) is
- the polyoxyalkylene polymer and the (meth) acrylate polymer are particularly preferable because they have high moisture permeability and are excellent in deep curing when formed into a one-part composition. Is most preferred.
- the reactive silicon group contained in the organic polymer having a reactive silicon group has a hydrolyzable group bonded to a silicon atom, and is formed by a reaction accelerated by a silanol condensation catalyst. A group that can be crosslinked by forming a siloxane bond.
- the reactive silicon group contained in the organic polymer having a reactive silicon group used in the present invention has a general formula (1):
- X represents a hydroxyl group or a hydrolyzable group, and three X's may be the same or different from each other!).
- the hydrolyzable group is not particularly limited, and may be any conventionally known hydrolyzable group! .
- Specific examples include a hydrogen atom, a halogen atom, an alkoxy group, an acyloxy group, a ketoximate group, an amino group, an amide group, an acid amide group, an aminooxy group, a mercapto group, and an alkoxycarbonyl group.
- hydrogen atoms, alkoxy groups, acyloxy groups, ketoxime groups, amino groups, amide groups, aminooxy groups, mercapto groups and alkoxy groups are preferred because of their mild hydrolytic properties. From the viewpoint of /, and! /, An alkoxy group is particularly preferred. Therefore, the general formula (11):
- R 16 is a substituted or unsubstituted hydrocarbon group, and three R 16 s may be the same as or different from each other). Particularly preferred.
- hydrolyzable trialkoxysilyl group examples include a trimethoxysilyl group, a triethoxysilyl group, and a triisopropoxysilyl group.
- a triethoxysilyl group is an alcoholic ethanol produced by a hydrolysis reaction of a reactive silicon group, and is particularly preferable because it has higher safety.
- the number of silicon atoms forming a reactive silicon group is one or more. In the case of silicon atoms linked by a siloxane bond or the like, the number is preferably 20 or less.
- the reactive silicon group may be introduced by a known method! That is, for example, the following method can be used.
- An organic polymer having a functional group such as a hydroxyl group in a molecule is reacted with an organic compound having an active group and an unsaturated group having reactivity to this functional group, and contains an unsaturated group.
- an organic polymer having an active group and an unsaturated group having reactivity to this functional group contains an unsaturated group.
- an unsaturated group-containing organic polymer is obtained by copolymerization with an unsaturated group-containing epoxy resin conjugate.
- the hydrosilylation is carried out by reacting the reaction product obtained in step (1) with hydrosilane having a reactive silicon group.
- the method (a) or the method (c) of reacting a polymer having a hydroxyl group at the terminal with a compound having an isocyanate group and a reactive silicon group is a comparative method. It is preferable because a high reaction rate can be obtained in a short reaction time. Furthermore, the organic polymer having a reactive silicon group obtained by the method (a) becomes a curable composition having lower viscosity and better workability than the organic polymer obtained by the method (c). In addition, since the organic polymer obtained by the method of (mouth) has a strong odor based on mercaptosilane, the method of (ii) is particularly preferred.
- hydrosilane conjugate used in the method (a) include, for example, halogenated silanes such as trichlorosilane; and alkoxysilanes such as trimethoxysilane and triethoxysilane.
- halogenated silanes such as trichlorosilane
- alkoxysilanes such as trimethoxysilane and triethoxysilane.
- the powers listed are not limited to these.
- alkoxysilanes are most preferable because the curable composition obtained has a mild hydrolyzability and is easy to handle!
- a compound having a mercapto group and a reactive silicon group is reacted with a radical initiator and Z or a radical generating source in the presence of a radical generating source to form an organic polymer.
- a radical initiator and Z or a radical generating source examples include a method of introducing the compound into an unsaturated bond site, but the method is not particularly limited.
- Specific examples of the compound having a mercapto group and a reactive silicon group include, for example, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -mercaptopropylpyrutriethoxysilane, mercaptomethyltrimethoxysilane, mercaptomethyltriethoxysilane, and the like. Listed powers are not limited to these.
- the power is not particularly limited.
- Specific examples of the above-mentioned compound having an isocyanate group and a reactive silicon group include, for example, ⁇ -isocyanatepropyltrimethoxysilane, ⁇ -isocyanatepropyltriethoxysilane, (isocyanatemethyl) trimethoxysilane. Powers such as silane and (isosinate methyl) triethoxysilane are not limited to these.
- the organic polymer having a reactive silicon group may have a linear or branched organic polymer having a number average molecular weight of about 500 to 100,000 in terms of polystyrene by GPC, more preferably ⁇ 1 , 000 to 50,000, particularly preferred ⁇ is 3,000 to 30,000. If the number average molecular weight is less than 500, the cured product tends to be inferior in elongation properties, and if it exceeds 100,000, it tends to be inconvenient in terms of workability due to high viscosity.
- At least one reactive silicon group contained in the organic polymer is required on average in one molecule of the polymer. , Preferably 1.1-5. If the number of reactive silicon groups contained in the molecule is less than one on average, the curability will be insufficient and good rubber elasticity will be exhibited.
- the reactive silicon group may be at the terminal of the main chain of the organic polymer molecular chain, and may be at the terminal of the side chain, or may be at both terminals.
- the effective mesh length of the organic polymer component contained in the finally formed cured product becomes long, and therefore, high strength and high strength are obtained. Elongation makes it easier to obtain a rubber-like cured product having a low elastic modulus.
- the polyoxyalkylene polymer essentially has the general formula (12):
- R 17 is a linear or branched alkylene group having 14 from 1 carbon atoms.
- R 17 in the general formula (12) is a polymer having repeating units shown by, R 17 in the general formula (12), carbon atoms Preferred are linear or branched alkylene groups of the formulas 1 to 14, more preferably 2 to 4.
- Specific examples of the repeating unit represented by the general formula (12) include:
- the main chain skeleton of the polyoxyalkylene polymer may have only one kind of repeating unit force, or may have two or more kinds of repeating unit forces.
- those made of a polymer containing a propylene oxide polymer as a main component are preferable because they are amorphous and have relatively low viscosity.
- a method for synthesizing a polyoxyalkylene polymer for example, a polymerization method using an alkali catalyst such as KOH, and an organic aluminum compound described in JP-A No. 61-215623 and Transition metal compound such as complex obtained by reacting with luffyline-polymerization method using vorphyrin complex catalyst, JP-B-46-27250, JP-B-59-15336, U.S. Pat. No. 3278457, U.S. Pat. Japanese Patent No. 3278459, U.S. Pat. No. 3,427,256, U.S. Pat. No. 3,427,334, U.S. Pat. No. 3,427,335, and the like.
- Examples thereof include a polymerization method using a catalyst, and a polymerization method using a catalyst having a phosphazene compound power as exemplified in JP-A-11-060722, but are not particularly limited.
- a method for producing a polyoxyalkylene polymer having a reactive silicon group is disclosed in
- Japanese Patent Application Laid-Open No. 8-231707 each of which has a number average molecular weight of 6,000 or more, a high molecular weight of Mw ZMn of 1.6 or less, a narrow molecular weight distribution, and an ability to exemplify a polyoxyalkylene polymer. It is not limited to these.
- the above polyoxyalkylene polymers having a reactive silicon group may be used alone or in combination of two or more.
- the saturated hydrocarbon-based polymer is a polymer substantially containing no carbon-carbon unsaturated bond other than an aromatic ring, and the polymer constituting the skeleton thereof includes (1) ethylene, propylene, 11-butene, A olefin-based compound having 2 to 6 carbon atoms such as isobutylene is polymerized as a main monomer, (2) a gen-based compound such as butadiene, isoprene or the like is homopolymerized, or Can be obtained by copolymerizing and then hydrogenating the isobutylene-based polymer and hydrogenated polybutadiene-based polymer.
- the preferred isobutylene-based polymer is particularly preferable since the number of functional groups can be increased.
- Those whose main chain skeleton is a saturated hydrocarbon-based polymer are characterized by excellent heat resistance, weather resistance, durability, and moisture barrier properties.
- all of the monomer units may be formed from isobutylene units, or a copolymer with another monomer may be used. Those containing 50% by weight or more of repeating units are preferred. Those containing 80% by weight or more are more preferred. Those containing 90 99% by weight are particularly preferred.
- Japanese Patent Publication No. 4-69659 Japanese Patent Publication No. 7-108928, JP-A-63-254149 and JP-A-64-64149 — Forces described in each specification of 22904, JP-A-1-197509, JP-A-2539445, JP-A-2873395, JP-A-7-53882, etc., but not particularly limited thereto. .
- the above-mentioned saturated hydrocarbon polymers having a reactive silicon group may be used alone or in combination of two or more.
- the (meth) acrylate-based monomer constituting the main chain of the (meth) acrylate-based polymer is not particularly limited, and various types can be used.
- the following vinyl-based monomers can be copolymerized.
- the butyl-based monomer include styrene, butyltoluene, and ⁇ -methyl.
- Styrene-based monomers such as styrene, chlorostyrene, styrenesulfonic acid and salts thereof; perfluoroethylene, perfluoroethylene Fluorine-containing monomer such as propylene and bi-lidene fluoride; silicon-containing monomer such as butyltrimethoxysilane and butyltriethoxysilane; maleic anhydride, maleic acid, monoalkyl and dialkyl esters of maleic acid; fumaric acid, Monoalkyl and dialkyl esters of fumaric acid; maleimide, methylmaleimide, ethylmaleimide, propylmaleimide, butylmaleimide, hexylmaleimide, octylmaleimide, dodecylmaleimide, stearylmaleimide, phenolmaleimide, cyclohexalemaleimide, etc.
- Maleimide monomers nitrile group-containing monomer such as acrylonitrile and metal-tolyl; amide group-containing monomer such as acrylamide and methacrylamide; Bulesters such as acid butyl, propionate, pivalate, benzoate and cinnamate; alkenes such as ethylene and propylene; conjugated gens such as butadiene and isoprene; butyl chloride and bi-lidene chloride , Aryl chloride, Aryl Alcohol and the like. These may be used alone or a plurality of them may be copolymerized.
- a polymer composed of a styrene-based monomer and a (meth) acrylic-acid-based monomer is preferable in view of the physical properties of the product. More preferably, it is a (meth) acrylic polymer having an acrylate monomer and a methacrylate monomer, and particularly preferably an acryl polymer having an acrylate monomer.
- butyl acrylate-based monomers are more preferred because physical properties such as low viscosity of the blend, low modulus of the cured product, high elongation, weather resistance and heat resistance are required.
- copolymers mainly containing ethyl acrylate are more preferred.
- This polymer mainly composed of ethyl acrylate is excellent in oil resistance, but tends to be slightly inferior in low-temperature characteristics (cold resistance). It is also possible to replace it. However, as the proportion of butyl acrylate is increased, its good oil resistance is impaired. Therefore, for applications requiring oil resistance, the ratio is preferably set to 40% or less. % Is more preferable.
- the ratio is preferably 40% or less. According to various uses and required purposes, it is possible to obtain a suitable polymer by changing the ratio in consideration of required properties such as oil resistance, heat resistance and low-temperature characteristics.
- examples of excellent physical properties such as oil resistance, heat resistance, and low-temperature properties include ethyl acrylate, butyl acrylate, and 2-methoxyethyl acrylate (40 to 50Z20 to 30Z30 by weight).
- these preferred monomers may be copolymerized with other monomers, and further, may be subjected to block copolymerization.In such a case, it is preferable that the monomers be contained in a weight ratio of 40% or more.
- (meth) acrylic acid means acrylic acid and ⁇ or methacrylic acid.
- the method for synthesizing the (meth) acrylate polymer is not particularly limited, and may be a known method. However, azo compounds, peroxides, etc. are usually used as polymerization initiators.
- the polymer obtained by the free radical polymerization method described above has a problem that the viscosity becomes large when the value of the molecular weight distribution is generally 2 or more. Therefore, a low-V, (meth) acrylate polymer having a narrow molecular weight distribution and a low viscosity, and having a high proportion of (meth) acrylate polymers having a crosslinkable functional group at the molecular chain end. In order to obtain, it is preferable to use a living radical polymerization method.
- an "atom transfer radical” in which an organic halide is polymerized from a (meth) acrylate-based monomer using a sulfonyl halide compound or the like as an initiator and a transition metal complex as a catalyst.
- the ⁇ polymerization method '' has the features of the above-mentioned ⁇ living radical polymerization method '' and has a terminal such as halogen which is relatively advantageous for the functional group conversion reaction, and has a high degree of freedom in designing initiators and catalysts. It is even more preferable as a method for producing a (meth) acrylate polymer having a specific functional group.
- the atom transfer radical polymerization method includes, for example, Matyjaszewski et al., J. Am. Chem. Soc. 1995, Vol. 117, p. 5614.
- Japanese Patent Publication No. 3-14068 Japanese Patent Publication No. 4-55444, and Japanese Patent Application Laid-Open No. Publications disclose a production method using a free radical polymerization method using a chain transfer agent.
- Japanese Patent Application Laid-Open No. 9-272714 discloses a method using an atom transfer radical polymerization method. The present invention is not particularly limited thereto.
- the (meth) acrylic acid ester-based polymer having a reactive silicon group may be used alone or in combination of two or more.
- organic polymers having a reactive silicon group may be used alone or in combination of two or more.
- a polyoxyalkylene polymer having a reactive silicon group a saturated hydrocarbon polymer having a reactive silicon group, a (meth) acrylate polymer having a reactive silicon group, Organic group
- An organic polymer obtained by blending two or more selected types can also be used.
- a preferred specific example is a compound having a reactive silicon group and substantially having a molecular chain represented by the following general formula (13): CH—C (R 18 ) (COOR 19 ) (13)
- R 18 is the same as above, R 2 ° represents an alkyl group having 10 or more carbon atoms
- R 19 in the general formula (13) for example, a methyl group, an ethyl group, a propyl group, an n-butyl group, a t-butyl group, a 2-ethylhexyl group, etc.
- the alkyl group is 1 to 4, more preferably 1 to 2.
- the alkyl group of R 19 may be used alone or in combination of two or more.
- R 2Q in the general formula (14) for example, lauryl group, tridecyl group, cetyl group, stearyl group, behenyl group and the like have 10 or more carbon atoms, usually 10 to 30, preferably 10 to 30 carbon atoms. To 20 long-chain alkyl groups. As in the case of R 19 , the alkyl group of R 2Q may be used alone or in combination of two or more.
- the molecular chain of the (meth) acrylic acid ester-based copolymer is substantially a monomer unit force represented by the formulas (13) and (14). It means that the total of the monomer units of the formulas (13) and (14) present in the copolymer exceeds 50% by weight.
- the total of the monomer units of the formulas (13) and (14) is preferably at least 70% by weight.
- the abundance ratio of the monomer unit of the formula (13) and the monomer unit of the formula (14) is preferably 95: 5 to 40:60 by weight, and 90:10 to 60:40. Power is even better!
- the monomer units other than those represented by the formulas (13) and (14) contained in the copolymer include, for example, ⁇ , ⁇ unsaturated monomers such as acrylic acid and methacrylic acid. Carboxylic acids; amides such as acrylamide, methacrylamide, ⁇ -methylol acrylamide, and ⁇ -methylol methacrylamide Epoxide group, glycidyl acrylate, glycidyl methacrylate, etc., an amino group such as acetylaminoethyl acrylate, acetylaminoethyl methacrylate, aminoethyl vinyl ether; and other acrylonitrile, styrene, (X —Examples include monomer units derived from methylstyrene, alkyl butyl ether, butyl chloride, butyl acetate, butyl propionate, ethylene, and the like.
- the main chain skeleton of the organic polymer may contain other components such as a urethane binding component as long as the effects of the present invention are not significantly impaired.
- the urethane binding component is not particularly limited, and examples thereof include a group generated by a reaction between an isocyanate group and an active hydrogen group (hereinafter, also referred to as an amide segment).
- the amide segment has the general formula (15):
- R 21 represents a hydrogen atom or a substituted or unsubstituted organic group.
- the amide segment include a urethane group generated by a reaction between an isocyanate group and a hydroxyl group; a urea group generated by a reaction between an isocyanate group and an amino group; and an urea group; And a thiourethane group generated by the above reaction.
- a group generated by the reaction of active hydrogen in the urethane group, urea group and thiourethane group with an isocyanate group is also included in the group represented by the general formula (15).
- an organic polymer having an active hydrogen-containing group at the terminal can be combined with an excess of a polyisocyanate compound. After reacting to form a polymer having an isocyanate group at the terminal of the polyurethane-based main chain, or at the same time, all or a part of the isocyanate group has the general formula (16) Z—R 22 —SiX (16)
- R 22 is a divalent organic group, more preferably a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms.
- Z is an active hydrogen-containing group selected from a hydroxyl group, a carboxyl group, a mercapto group and an amino group (primary or secondary). Which are produced by a method of reacting a Z group of a silicon compound represented by the following formula: Examples of known production methods for organic polymers related to this production method include JP-B-46-12154 (US Pat. No. 3,632,557), JP-A-58-109529 (US Pat. No. 4,374,237), and 62-13430 (U.S. Pat. No. (US Patent No.
- an organic polymer having an active hydrogen-containing group at a terminal is represented by the general formula (17)
- Examples of the organic polymer having an active hydrogen-containing group at the terminal include an oxygen-terminated organic polymer.
- examples include a silalkylene polymer (polyether polyol), a polyacryl polyol, a polyester polyol, a saturated hydrocarbon polymer having a hydroxyl group at a terminal (polyolefin polyol), a polythiol conjugate, a polyamine conjugate, and the like.
- polyether polyols, polyacryl polyols, and polyolefin polyols are preferred because the resulting organic polymer has a relatively low glass transition temperature and the resulting cured product has excellent cold resistance.
- polyether polyols are particularly preferable because the viscosity of the obtained organic polymer is low, the workability is good, and the deep part curability is good.
- polyacryl polyols and saturated hydrocarbon polymers are more preferred because the cured product of the obtained organic polymer has good weather resistance and heat resistance.
- polyether polyol those produced according to the above production method can also be used, but those having at least 0.7 hydroxyl groups at the terminal per molecular terminal on the average of the whole molecule can be used. Is preferred. Specifically, such as an oxyalkylene polymer produced using a conventional alkali metal catalyst and a polyhydroxy conjugate having at least two hydroxyl groups in the presence of a double metal cyanide complex ⁇ cesium. Examples of the initiator include an oxyalkylene polymer produced by reacting an alkylene oxide.
- a polymerization method using a double metal cyanide complex has a lower degree of unsaturation, a lower viscosity in which MwZMn is narrower, and a high acid resistance and high weather resistance oxyalkylene. It is preferable because a polymer can be obtained.
- Examples of the polyacryl polyol include polyols having a (meth) acrylic acid alkyl ester (co) polymer as a skeleton and having a hydroxyl group in the molecule.
- an atom transfer radical polymerization method is more preferable because a living radial polymerization method is preferable because a molecular weight distribution is narrow and a viscosity can be reduced.
- Specific examples include UH-2000 manufactured by Toagosei Co., Ltd.
- polyisocyanate conjugate examples include aromatic polyisocyanates such as toluene (tolylene) diisocyanate, diphenylmethane diisocyanate, and xylylene diisocyanate; Fats such as isocyanate and hexamethylene diisocyanate Group polyisocyanates and the like.
- aromatic polyisocyanates such as toluene (tolylene) diisocyanate, diphenylmethane diisocyanate, and xylylene diisocyanate
- Fats such as isocyanate and hexamethylene diisocyanate Group polyisocyanates and the like.
- the silicon compound represented by the general formula (16) is not particularly limited, but specific examples include ⁇ -aminopropyltrimethoxysilane and ⁇ - ( ⁇ -aminoethyl))-aminopropyltrimethoxysilane.
- JP-A-10-53637 (US Pat. No. 169545 [This is described!] This is a Michael addition reaction of various a, ⁇ unsaturated carbohydrate compounds with a primary amino group-containing silane, or various (meth) atalyloyl group-containing silanes.
- a Michael addition reaction with a primary amino group-containing compound can also be used as the silicon compound of the general formula (16).
- the reactive silicon group-containing isocyanate conjugate of the general formula (17) is not particularly limited. Specific examples include, for example, ⁇ -trimethoxysilylpropyl isocyanate, ⁇ -triethoxysilylmethyl isocyanate, and the like. Is mentioned. Further, as described in JP-A-2000-119365 (US Pat. No. 6,046,270), a compound obtained by reacting a silicon compound of the general formula (16) with an excess of the above polyisocyanate compound is obtained. The resulting compound can also be used as a reactive silicon group-containing isocyanate conjugate of the general formula (17).
- the amide segment is large in the main chain skeleton of the organic polymer as the component (II) of the present invention, the viscosity of the organic polymer becomes high, and a composition having poor workability may be obtained.
- the amide segment in the main chain skeleton of the component (II) tends to improve the curability of the composition of the present invention. Therefore, when an amide segment is contained in the main chain skeleton of the component ( ⁇ ), the number of amide segments per molecule is preferably 1 to 10, preferably 1.5 to 7, more preferably 2 to 5 per molecule. Individuals are particularly preferred. If the number is less than one, the curability may not be sufficient.If the number is more than 10, the organic polymer may have a high viscosity and the composition may have poor workability.
- the component (B) one or more selected from a titanium catalyst, an aluminum catalyst, and a zirconium catalyst are used. These catalysts function as curing catalysts for the organic polymer as the component (A).
- organotin compounds such as dibutyltin dilaurate and dibutyltin bisacetylacetonate have been used as a curing catalyst for an organic polymer having a reactive silicon group as the component (A).
- the catalyst (B) By using the catalyst (B), a curable composition having practical curing characteristics can be obtained even though it is a non-organic tin catalyst. Further, compared to the case where another curing catalyst such as an organic tin catalyst is used, the adhesion to a poorly adherent organic adherend such as acrylic resin can be improved.
- the titanium catalyst also preferably has a curable point force.
- the compound such as TiO which does not function as a curing catalyst for the component (A), can
- the catalyst is a compound having a titanium atom, an aluminum atom, or a zirconium atom bonded to a hydroxyl group or a substituted or unsubstituted alkoxy group.
- a preferred specific example of the titanium catalyst is represented by the general formula (2) ):
- R 1 is an organic group, more preferably a hydrocarbon group in the substituted or Hi ⁇ conversion 1 to 20 carbon atoms, four R 1 may be identical to each other, or different And titanium alkoxide can be exemplified as a typical compound.
- the compound represented by the general formula (2) some or all of the four OR 1 groups in the general formula (2) are represented by the general formula (18):
- R 23 is an organic group, more preferably a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms.
- Examples of the titanium catalyst not represented by the general formula (2) include a general formula (19):
- R 24 is an organic group, more preferably 1 to 4 carbon atoms. 20 substituted or unsubstituted hydrocarbon groups wherein a 24 R 24 s may be the same as or different from each other, and a is 1, 2, or 3.) Titanium halide alkoxides may be mentioned.
- titanium alkoxide is preferable in terms of stability against moisture and curability.
- R 2 and R 3 are a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and R 2 and R 3 may be the same or different.
- n pieces of R 2 may be identical to each other, Yogu 4-n-number of R 3 be made different even be identical to one another or may be different.
- a 2 is selected as —R 4 or —OR 4 (where R 4 is a hydrocarbon group having 1 to 20 carbon atoms).
- a 1 and A 2 may be the same or different.
- 4-n pieces of A 1 is a same each other, the Yogu 4-n-number of A 2 be different from be the same to each other or may be different.
- n is 0, 1, 2, or 3.
- R 5 is a divalent hydrocarbon group having 1 to 20 carbon atoms.
- the titanium chelate represented by the formula (1) is more preferable in view of compatibility with the component (II), high catalytic activity, and storage stability. Titanium chelates of the general formula (3) are particularly preferred because of their high catalytic activity. Titanium chelates of formula (3) where ⁇ is 2 are most preferred because of their relatively low crystallinity (melting point), good workability and high catalytic activity.
- titanium alkoxide represented by the general formula (2) examples include titanium tetramethoxide, titanium tetraethoxide, titanium tetraaryloxide, titanium tetra ⁇ -propoxide, titanium tetraisopropoxide, Titanium tetra ⁇ -butoxide, titanium tetraisobutoxide, titanium tetra sec-butoxide, titanium tetrabutoxide, titanium tetra n-pentyloxide, titanium tetracyclopentyloxide, titanium tetrahexoxide, titanium tetracyclohexyloxide, titanium Benzyl oxide, titanium tetraoctyloxide, titanium tetrakis (2-ethylhexyloxide), titanium tetradecyloxide, titanium ⁇ Tetradodecyloxide, titanium tetrastearyloxide, titanium tetrabutoxide dimer, titanium te
- titanium acylate in which a part or all of four OR 1 groups in the general formula (2) are groups represented by the general formula (18) include titanium acrylate triiso Propoxide, titanium methacrylate triisopropoxide, titanium dimethacrylate diisopropoxide, titanium isopropoxide trimethacrylate, titanium hexanoate triisopropoxide, tita-dimethyl stearate triisopropoxide, and the like.
- halogenated titanium alkoxide represented by the general formula (19) include titanium dimethyl chloride triisopropoxide, titanium dichloride diisopropoxide, titanium isopropoxide trichloride, and titanium bromide triisopropoxide. , Titanium fluoride triisopropoxide, titanium chloride triethoxide, titanium chloride tributoxide, and the like.
- titanium chelate represented by the general formula (3) or (4) include titanium-dimethoxide bis (ethynoleacetoacetate), titanium dimethoxide bis (acetinoleacetonate), and titanium dimethoxide.
- Ethoxide bis (ethyl acetate acetate), titanium diethoxide bis (acetinoleacetonate), titanium diisopropoxide bis (ethynoleacetoacetate), titanium diisopropoxide acetate (methyl acetate acetate) ), Titanium diisopropoxide bis (t-butylacetoacetate), titanium diisopropoxide bis (methyl-3-oxo4,4-dimethylhexanoate), titanium diisopropoxide bis (ethyl-3-oxo4,4) , 4 trifluoropentanoate), titanium diisopropoxy Dobis (acetyl acetate), titanium diisopropoxide bis (2,2,6,6-tetramethyl-3,5-heptanedionate), titanium di n-butoxide bis (ethyl acetate acetate), titanium g n-butoxide bis (acetyl acetate), titadium diisobutoxide bis (e
- titanium catalysts other than those described above include titanium tris (dioctyl phosphate) isopropoxide, titanium tris (dodecylbenzenesulfonate) isopropoxide, dihydroxytitanium bislatate, and the like. .
- chelating reagent capable of forming the chelating ligand of the titanium chelate include 13-diketones such as acetylacetone, 2,2,4,4-tetramethyl-3,5 heptanedione, and ethyl acetoacetate.
- acetylacetone, methyl acetoacetate, and ethyl acetoacetate are more preferable in terms of curability, storage stability, and availability. And ethyl acetate.
- each chelating ligand is different even if they are the same!
- the following method (2) or (e) can be used.
- a method using a titanium chelate that has been chelated in a material are examples of a material.
- R 6 is an organic group, more preferably a hydrocarbon group in the substituted or Hi ⁇ conversion 1 to 20 carbon atoms, the three R 6 are also the same to each other, or different And aluminum alkoxide can be exemplified as a typical compound.
- the compound represented by the general formula (5) some or all of the three OR 6 groups in the general formula (5) are represented by the general formula (20):
- R 25 is an organic group, more preferably a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms.
- Aluminum acylate which is an acyloxy group represented by .
- Examples of the aluminum catalyst not represented by the general formula (5) include a general formula (21):
- R 26 is an organic group, more preferably 1 to 2 carbon atoms. 20 substituted or unsubstituted hydrocarbon groups, and b R 26 s may be the same or different from each other, and b is either 1 or 2.
- Aluminum alkoxide is exemplified.
- R 8 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms
- R 7 and R 8 may be the same or different.
- the m R 7 are the same to each other, it may be made different, the 3- m-number of R 8 may be identical to one another or may be different.
- the —R 9 or —OR 9 force is also selected (where R 9 is a hydrocarbon group having 1 to 20 carbon atoms).
- a 3 and A 4 may be the same or different.
- the 3- m pieces of A 3 have the same mutually, or different, is 3- m pieces of A 4 may be identical to one another or may be different dates.
- m is 0, 1, or 2.
- R 1Q is a divalent hydrocarbon group having 1 to 20 carbon atoms.
- the aluminum chelate of the general formula (6) is particularly preferred because of its high catalytic activity.
- aluminum alkoxide represented by the general formula (5) include aluminum trimethoxide, aluminum triethoxide, aluminum triallyloxide, and aluminum-alkoxide.
- aluminum acylate in which a part or all of three OR 6 groups in the general formula (5) are groups represented by the general formula (20) include aluminum acrylate diisopro Examples include poxide, aluminum methacrylate diisopropoxide, aluminum isopropoxide dimethacrylate, aluminum hexanoate diisopropoxide, and aluminum dimethyl stearate diisopropoxide.
- halogenated aluminum alkoxide represented by the general formula (21) include aluminum-dimethyl chloride diisopropoxide, aluminum isopropoxide dichloride, aluminum-dimethyl bromide diisopropoxide, and aluminum fluoride dichloride. Isopropoxide, aluminum-dimethyl chloride ethoxide, aluminum chloride dibutoxide, etc.
- aluminum chelate of the general formula (6) or the general formula (7) examples include aluminum methoxide bis (ethyl acetate acetate), aluminum methoxide bis (acetyl acetonate), and aluminum ethoxide bis ( Ethyl acetate acetate), aluminum ethoxide bis (acetyl acetate), aluminum isopropoxide bis (ethyl acetate), aluminum isopropoxide bis (methyl acetate acetate), aluminum isopropoxide bis (t —Butyl acetate acetate), aluminum dimethoxide (ethyl acetate acetate), aluminum dimethoxide (acetyl acetate), aluminum diethoxide (ethyl acetate acetate), aluminum diethoxide (acetyl acetate), aluminum Me-diisopropoxide (ethyl acetate acetate), aluminum diisopropoxide (methyl acetate acetate), aluminum diisopropoxide (e (
- aluminum catalysts other than those described above include aluminum bis (dioctyl phosphate) isopropoxide, aluminum bis (dodecylbenzenesulfonate) isopropoxide, hydroxyaluminum bislatate, And the like.
- chelating reagent capable of forming the chelating ligand of the aluminum chelate include 13-diketones such as acetylacetone, 2,2,4,4-tetramethyl-3,5-heptanedione, and acetoacetic acid.
- the following method (2) or (e) can be used.
- (2) Aluminum touch that was previously chelated A method of adding a medium.
- Preferred examples of the zirconium catalyst include general formula (8):
- R 11 is an organic group, more preferably a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, and the four R 11 are different even if they are the same as each other.
- zirconium alkoxide can be exemplified as a typical compound. Examples of the compound represented by the other general formula of that (8), the general formula (8) is the general formula some or all of the four OR 11 groups in (22):
- R 27 is an organic group, more preferably a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms).
- R 28 is an organic group, more preferably 1 to 4 carbon atoms. 20 substituted or unsubstituted hydrocarbon groups, and c R 28 s may be the same or different from each other, and c is 1, 2, or 3.) Zirconium halide alkoxides.
- zirconium alkoxide is also preferable in terms of stability against moisture and curability.
- R 1 R is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms
- R 13 may be the same or different.
- One R 12 may be the same or different from each other 4-1
- R 13 may be the same or different from each other
- a 5 and A 6 may be —R 14 or — Selected from OR 14 (where R 14 is a hydrocarbon group having 1 to 20 carbon atoms)
- a 5 and A 6 may be the same or different 4-1
- a 5 May be the same or different from each other 4-1
- a 6 may be the same as or different from each other 1 is 0, 1, 2, or 3
- the zirconium chelate represented by the formula (1) is more preferable in view of compatibility with the component ( ⁇ ), high catalytic activity, and storage stability.
- Zirconium chelates of the general formula (9) are particularly preferred because of their high catalytic activity.
- zirconium alkoxide represented by the general formula (8) include zirconium tetramethoxide, zirconium tetraethoxide, zirconium tetraaryloxide, and zirconium tetraaryloxide.
- zirconium acylate in which a part or all of the four OR 11 groups in the general formula (8) are groups represented by the general formula (22) include zirconium atalylate triisopro Oxides, zirconium methacrylate triisopropoxide, zirconium dimethacrylate diisopropoxide, zirconium isopropoxide trimethacrylate, zirconium hexanoate triisopropoxide, zirconium stearate triisopropoxide, and the like.
- zirconium atalylate triisopro Oxides zirconium methacrylate triisopropoxide, zirconium dimethacrylate diisopropoxide, zirconium isopropoxide trimethacrylate, zirconium hexanoate triisopropoxide, zirconium stearate triisopropoxide, and the like.
- zirconium halide alkoxide of the general formula (23) include zirconium-dimethyl chloride triisopropoxide, zirconium dichloride diisopropoxide, zirconium-dimethyl isopropoxide trichloride, and zirconium bromide.
- zirconium chelate represented by the general formula (9) or (10) include zirconium-dimethyldimethoxide bis (ethynoleacetoacetate), zirconium dimethoxide bis (acetyl acetonate), zirconium diethoxide.
- di-dimethyldiethoxybis ethyl acetate
- zirconium diethoxybis acetinoleacetonate
- dinoreconidum diisopropoxide bis ethynoleacetoacetate
- zirconium diethoxy Isopropoxide bis (acetyl acetate), zirconium dibutoxide bis (ethyl acetate acetate), zirconium dibutoxide bis (acetyl acetate, zirconium dibutoxide bis (acetyl acetate, zirconium triisopropoxide (ethyl acetate acetate), zirconium triacetate Isopropoxide (acetyl acetate), zirconium tri-n-butoxide (ethyl acetate), zirconium tri-n-butoxide (acetyl acetate), zirconium isopoxide trioxide (ethinolacetoacetate), zir
- zirconium catalysts other than those described above include zirconium tris (dioctyl phosphate) isopropoxide, zirconium tris (dodecyl benzene sulfonate) isopropoxide, dihydroxy zirconium bislatate, and the like. Is mentioned.
- chelating reagent capable of forming the chelating ligand of the zirconium chelate include 13-diketones such as acetylacetone, 2,2,4,4-tetramethyl-3,5-heptanedione, and acetoacetic acid.
- the zirconium chelate is added as the component (II) of the present invention, the following method (2) or (e) can be used.
- (2) A method of adding zirconium catalyst which has been chelated in advance.
- E A zirconium compound capable of reacting with a chelating agent such as zirconium tetraisopropoxide or zirconium dichloride diisopropoxide and a chelating agent such as ethyl ethyl acetate are added to the composition of the present invention.
- a zirconium chelate that has been chelated in step 1 a zirconium chelate that has been chelated in step 1.
- the catalyst of component (II) can be used alone or in combination of two or more.
- a low molecular weight compound having a molecular weight of 100 to 1000 and having a hydrolyzable silicon group is used as the component (C).
- various compounds having a hydrolyzable silicon group and a molecular weight of 100 to 1,000 can be used without particular limitation.
- Specific examples include a silane coupling agent having a hydrolyzable silicon group and another functional group (C1), and a compound having only a reactive silicon group as a functional group (C2). .
- the silane coupling agent as the component (C1) includes an adhesiveness-imparting agent, a physical property modifier, A compound that can function as an agent, a dispersibility improver for an inorganic filler, and the like.
- Examples of the reactive silicon group of the silane coupling agent include the general formula (24):
- R 29 and R 3Q each independently represent an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or R, SiO-
- Triorganosiloxy group represented by 3 shows a Zureka, when R 29 or R 3 ° is present two or more, they may be different Yogu be the same.
- R ' is a hydrocarbon group having 1 carbon atom and 20 powers, and three R's may be the same or different.
- Y represents a hydrolyzable group, and when two or more Ys are present, they may be the same or different.
- d represents 0, 1, 2 or 3
- e represents 0, 1, or 2.
- e in k (SiR 29 YO) groups they may be the same or different.
- k represents an integer from 0 to 19. However, it satisfies d + ⁇ e ⁇ l).
- Y in the general formula (24) is not particularly limited, and may be a conventionally known hydrolyzable group.
- Specific examples include a hydrogen atom, a halogen atom, an alkoxy group, an acyloxy group, a ketoxime group, an amino group, an amide group, an acid amide group, an aminooxy group, a mercapto group, and an alkoxycarbonyl group.
- a hydrogen atom, an alkoxy group, an acyloxy group, a ketoximate group, an amino group, an amide group, an aminooxy group, a mercapto group and an alkenyl group are preferable, and the hydrolyzability is mild and handling is easy.
- the alkoxy group is particularly preferable in view of the power. More specifically, a methoxy group, an ethoxy group, and the like also have a favorable hydrolysis rate.
- the number of hydrolysable groups is preferably 2 or more, particularly preferably 3 or more.
- Examples of the functional group other than the hydrolyzable silicon group include a primary, secondary, and tertiary amino group, a mercapto group, an epoxy group, a carboxyl group, a butyl group, an isocyanate group, an isocyanurate, and a nitrogen atom. It can.
- primary, secondary, and tertiary amino groups, epoxy groups, isocyanate groups, isocyanurates, and the like are more preferred because of their high adhesiveness improving effect, and more preferred are primary amino groups. preferable.
- silane coupling agent examples include ⁇ -isocyanatepropyltrimethoxysila. Emissions, I- iso Xia sulphonate propyl triethoxysilane, .gamma.
- Aminopurobiruto triethoxysilane I Aminopuropiru Triisopropoxysilane, ⁇ -aminopropinolemethyldimethoxysilane, ⁇ -aminopropylmethyl ethoxysilane, ⁇ - (2-aminoethyl) aminopropyltrimethoxysilane, ⁇ - (2-aminoethyl) aminopro ⁇ - (2-aminoethyl) aminopropyltriethoxysilane, ⁇ - (2-aminoethyl) aminopropylmethyl ethoxysilane, ⁇ - (2-aminoethyl) aminopropyl triisopropoxysilane, ⁇ - (6-aminohexyl) aminopropyltrimethoxysilane, 3-((ethylamino) 2-methylpropyltrimethoxysilane, ⁇ -ureidopropyl trimethoxysilane, ⁇ -
- silane coupling agents examples include the above reactant of aminosilane and epoxysilane, the reactant of aminosilane and isocyanate silane, and partial condensates of various silane coupling agents.
- the compound having only a hydrolyzable silicon group as a functional group which is the component (C2), is a compound that can function as a dehydrating agent, a cross-linking agent, a physical property adjusting agent, or the like.
- the component (C2) various compounds can be used without particular limitation as long as they have only a reactive silicon group as a functional group and have a molecular weight of 100 to: LOOO. Is the general formula (25):
- R 31 and R 32 are a hydrocarbon group having 1 to 20 carbon atoms, and R 31 and R 32 may be the same or different.
- F is 0, 1, 2 or 3 or a partially hydrolyzed condensate thereof.
- component (C2) include tetramethoxysilane, tetraethoxysilane, ethoxytrimethoxysilane, dimethoxydiethoxysilane, methoxytriethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, and tetra-n-butoxy.
- Tetraalkoxysilanes such as silane, tetra-i-butoxysilane, tetra-t-butoxysilane; methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, methyltriphenoxysilane, and ethyltrimethoxysilane
- Trialkoxysilanes such as butyltrimethoxysilane and phenoltrimethoxysilane; dialkoxysilanes such as dimethyldimethoxysilane, getyldimethoxysilane and diphenyldimethoxysilane Silane; trimethyl Monoalkoxysilanes such as tylmethoxysilane and triphenylmethoxysilane; dimethyldioxysilane; and partially hydrolyzed condensates thereof.
- the partially hydrolyzed condensate of the organosilicate compound a commercially available product can be used.
- examples of such condensates include methyl silicate 51 and ethyl silicate 40 (both are made by Colcoat).
- the low molecular weight compound having a molecular weight of 100 to 1000 and having a hydrolyzable silicon group as the component (C) can be used alone or in combination of two or more.
- the total number of moles (a) of the titanium, aluminum, and zirconium atoms of the component (B) in the composition and the total number of moles of the silicon atom of the component (C) in the composition is essential that the ratio (a Zb) to b) is larger than 0.08.
- the value of aZb is 0.08 or less, the curing speed is remarkably reduced, and practical curability cannot be obtained when used as a sealing material or an adhesive.
- the value of a / b is preferably larger than 0.10, and particularly preferably larger than 0.15.
- the amount of the component (B) to be used is about 0.1 to 15 parts by weight with respect to 100 parts by weight of the component (A), as long as the value of aZb is larger than 0.08. Is preferably about 0.5 to 10 parts by weight, more preferably about 2 to 8 parts by weight. If the amount of component (B) is less than this range, a practical curing speed may not be obtained, and the curing reaction may not proceed sufficiently. On the other hand, when the amount of the component (B) exceeds this range, the pot life tends to be too short, resulting in poor workability.
- the amount of the component (C) used is about 0.1 to 15 parts by weight with respect to 100 parts by weight of the component (A), as long as the value of aZb is larger than 0.08. Is preferred 1 to: L0 parts by weight is more preferred 3 to 7 parts by weight is particularly preferred. If the amount of component (C) is below this range, the adhesiveness and storage stability may not be sufficient, and the effect of improving the tensile properties may not be sufficient. On the other hand, if the amount of the component (C) exceeds this range, a practical curing speed may not be obtained, and the curing reaction may not be sufficiently advanced.
- the curing catalyst of the present invention one or more selected from a titanium catalyst, an aluminum catalyst, and a zirconium catalyst are used, but other curing catalysts can be used in combination so long as the effects of the present invention are not reduced.
- Specific examples include carboxylic acid metal salts such as tin 2-ethylhexanoate, tin versatate, and bismuth 2-ethylhexanoate; dibutyltin dilaurate, dibutyltin maleate, dibutyltin phthalate, dibutyltin dioctanoate, dibutyltin.
- a filler can be added to the composition of the present invention.
- fillers include reinforcing fillers such as fume silicic acid, precipitated silica, crystalline silica, fused silica, dolomite, carboxylic anhydride, hydrous carboxylic acid, and carbon black; heavy calcium carbonate, colloidal calcium carbonate, Magnesium carbonate, diatomaceous earth, calcined clay, clay, talc, titanium oxide, bentonite, organic bentonite, ferric oxide, aluminum fine powder, flint powder, zinc oxide, activated zinc white, shirasu balloon, glass micro balloon, phenol And fillers such as fat powder such as organic microballoons of fat and salt, and resin, PVC powder and PMMA powder; and fibrous fillers such as asbestos, glass fiber and filament.
- the amount is 1 to 250 parts by weight, preferably 10 to 200 parts by weight, per 100 parts by weight of the polymer of component (A).
- the filler is uniformly mixed with a dehydrating agent such as calcium oxide, and then sealed in a bag made of an airtight material. It is also possible to dehydrate and dry in advance by leaving it for an appropriate time. This low moisture filler By using the compound, storage stability can be improved, particularly when a one-part composition is used.
- a dehydrating agent such as calcium oxide
- a polymer powder using a polymer such as methyl methacrylate as a raw material, Amorphous silica or the like can be used as a filler.
- hydrophobic silica or the like which is a fine powder of silicon dioxide having a hydrophobic group bonded to the surface thereof, as a filler makes it possible to increase the transparency.
- a high composition can be obtained.
- the surface of the silicon dioxide fine powder generally has a silanol group (—SiOH).
- SiO—hydrophobic group is hydrophobic silica. More specifically, dimethylsiloxane, hexamethyldisilazane, dimethyldichlorosilane, trimethoxyoctylsilane, trimethylsilane, and the like are reactively bonded to silanol groups present on the surface of silicon dioxide fine powder. is there.
- the silicon dioxide fine powder whose surface is formed of silanol groups (—SiOH) is called hydrophilic silica fine powder.
- calcium carbonate such as titanium oxide and heavy calcium carbonate, magnesium carbonate, talc, ferric oxide, zinc oxide, and shirasu balloon.
- a filler selected from the above is used in an amount of 5 to 200 parts by weight based on 100 parts by weight of the organic polymer (A) having a reactive silicon group, preferable results can be obtained.
- the greater the specific surface area of calcium carbonate the greater the effect of improving the strength at break, elongation at break, and adhesiveness of the cured product.
- these fillers may be used alone or in combination of two or more.
- calcium carbonate When calcium carbonate is used, it is desirable to use calcium carbonate in combination with fine particles of surface-treated fine calcium carbonate and heavy calcium carbonate.
- Surface treatment of fine calcium carbonate The surface treatment, which preferably has a particle size of 0.5 / zm or less, is preferably treated with a fatty acid or a fatty acid salt. Further, calcium carbonate having a large particle diameter preferably has a particle diameter of 1 ⁇ m or more, and a surface-treated calcium carbonate can be used.
- the composition In order to improve the workability (such as sharpness) of the composition and to make the surface of the cured product matte, it is preferable to use an organic balloon or an inorganic balloon. These fillers can be surface-treated, and may be used alone or in combination of two or more.
- the particle size of the balloon In order to improve workability (such as sharpness), is preferably 0.1 mm or less.
- the thickness In order to make the surface of the cured product matte, the thickness is preferably 5 to 300 m.
- the composition of the present invention is a sizing board, especially a ceramic sizing board, such as a sizing board for a house, an adhesive for an outer wall tile, and an adhesive for an outer wall tile, for example, because the cured product has good chemical resistance.
- the adhesive is preferably used for adhesives that remain on joints, but it is desirable that the design of the outer wall and the design of the sealing material be in harmony.
- high-quality exterior walls are being used as the exterior walls by spatter coating, coloring aggregates, and the like.
- the composition of the present invention contains a scale-like or granular substance having a diameter of 0.1 mm or more, preferably about 0.1 to 5.Omm, the cured product will have such a high-grade outer wall.
- this cured product is an excellent composition that lasts for a long time.
- the surface has a sanding-like or sandstone-like roughness, and when a flaky substance is used, the surface becomes uneven due to the scale.
- the preferred diameter, compounding amount, material, and the like of the flaky or granular substance are as follows, as described in JP-A-953063.
- the diameter is 0.1 mm or more, preferably about 0.1 to 5.0 mm, and an appropriate size is used according to the material, pattern, and the like of the outer wall. It is also possible to use those with a thickness of about 0.2 mm to 5. Omm or about 0.5 mm to 5. Omm. In the case of a scale-like substance, the thickness is as thin as about 1Z10 to 1Z5 in diameter (0.01 to about L00mm).
- the scaly or granular substance is premixed in the main sealing material and transferred to the construction site as a sealing material, and is mixed into the main sealing material at the construction site when used.
- the scaly or granular substance is mixed in an amount of about 1 to 200 parts by weight with respect to 100 parts by weight of a composition such as a sealing material composition or an adhesive composition.
- the compounding amount is individual scale-like or Is appropriately selected depending on the size of the granular substance, the material of the outer wall, the pattern, and the like.
- Examples of the scaly or granular substance include natural substances such as ky sand, My power, synthetic rubber, synthetic resin, and inorganic substances such as alumina. In order to enhance the design when filling the joints, it is colored in an appropriate color according to the material and pattern of the outer wall.
- finishing method and the like are described in JP-A-9-53063.
- a balloon preferably having an average particle diameter of 0.1 mm or more
- a sanding-like or sandstone-like surface with a rough feeling can be obtained, and the weight of the surface can be reduced.
- the preferred diameter, compounding amount, material and the like of the balloon are as follows, as described in JP-A-10-251618.
- the balloon is a spherical filler and has a hollow inside.
- Materials for the balloon include inorganic materials such as glass, shirasu, and silica, and organic materials such as phenolic resin, urea resin, polystyrene, and saran.
- the inorganic material and the organic material can be compounded, or a plurality of layers can be formed by lamination.
- Inorganic, organic, or composite balloons can be used.
- the same balloon may be used, or a plurality of types of balloons of different materials may be used in combination.
- the balloon one whose surface is processed or coated can be used, and that whose surface has been treated with various surface treatment agents can be used. For example, coating an organic balloon with calcium carbonate, talc, titanium oxide, or the like, or treating an inorganic nonane with a silane coupling agent for surface treatment may be mentioned.
- the balloon preferably has a particle size of 0.1 mm or more. It is also possible to use one with a thickness of about 0.2 mm to 5. Omm or about 0.5 mm to 5. Omm. If it is less than 0.1 mm, even if it is blended in a large amount, it may only increase the viscosity of the composition and may not exhibit a rough feeling.
- the blending amount of nolane can be easily determined according to the degree of roughness of the intended sanding tone or sandstone tone. In general, it is desirable to blend a composition having a particle size of 0.1 mm or more at a volume concentration in the composition of 5 to 25 vol%.
- the balloon volume concentration is less than 5 vol% If it exceeds 25vol%, the viscosity of the sealing material / adhesive increases, the workability is poor, and the modulus of the cured product increases, and the basic performance of the sealing material / adhesive tends to be impaired. .
- the balance with the basic performance of the sealing material is particularly preferred, and the volume concentration is 8 to 22 vol%.
- a slip inhibitor as described in JP-A-2000-154368 and a cured product as described in JP-A-2001-164237 are formed in an uneven state.
- an amine compound for giving an opaque state in particular, primary and Z or secondary amine having a melting point of 35 ° C. or more can be added.
- the thermally expandable fine hollow particles described in JP-A-2004-51701 or JP-A-2004-66749 can be used.
- the heat-expandable fine-grained hollow body refers to a low-boiling compound such as a hydrocarbon having 1 to 5 carbon atoms, which is a polymer outer shell material (a salty vinylidene copolymer, an acrylonitrile copolymer, or a salty polymer). It is a plastic sphere wrapped in a spherical shape with a dani-lindene acrylonitrile copolymer).
- the composition of the present invention contains particles of a cured sealing material
- the cured product can form irregularities on the surface and improve the design.
- the preferred, diameter, compounding amount, material and the like of the cured sealing material particles are as follows as described in JP-A-2001-115142.
- the diameter is preferably from 0.1 mm to: Lmm, more preferably from about 0.2 to 0.5 mm.
- the amount is preferably 5 to: L00% by weight, more preferably 20 to 50% by weight in the curable composition.
- the material include polyurethane resin, silicone, modified silicone, and polysulfur rubber. Although it is not limited as long as it is used as a material, a modified silicone-based sealing material is preferable.
- a tackifier may be added to the composition of the present invention.
- the tackifying resin is not particularly limited, but those commonly used at room temperature, whether solid or liquid, can be used. Specific examples include a styrene-based block copolymer, a hydrogenated product thereof, a phenol resin, a modified phenol resin (for example, a cash oil-modified phenol resin, a tall oil-modified phenol resin, etc.), a terpene phenol resin, Xylene phenol resin, cyclopentadiene phenol resin, coumarone indene resin, rosin resin, rosin ester resin, hydrogenated rosin ester resin, xylene resin, low molecular weight polystyrene resin, styrene copolymer Combined resin, petroleum resin (for example, C5 hydrocarbon resin, C9 hydrocarbon resin, C5C9 hydrocarbon copolymer resin, etc.), hydrogenated petroleum resin, terpene resin, DCPD resin petroleum
- Styrene-based block copolymers and their hydrogenated celluloses include styrene butagen-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-butylene styrene block copolymer.
- SBS styrene butagen-styrene block copolymer
- SIS styrene-isoprene-styrene block copolymer
- SEBS styrene ethylene propylene styrene block copolymer
- SIBS styrene isobutylene styrene block copolymer
- the tackifying resin may be used alone or in combination of two or more.
- the tackifying resin is used in an amount of 5 to 1,000 parts by weight, preferably 10 to: L00 parts by weight based on 100 parts by weight of the organic polymer (A).
- a plasticizer can be added to the composition of the present invention.
- the viscosity and slump properties of the curable composition and the mechanical properties such as tensile strength and elongation of the cured product obtained by curing the composition can be adjusted by adding the plasticizer.
- plasticizer examples include phthalic acid esters such as dibutyl phthalate, diheptyl phthalate, di (2-ethylhexyl) phthalate and butylbenzyl phthalate; dioctyl adipate, dioctyl sebacate, dibutyl sebacate, succinate
- Non-aromatic dibasic acid esters such as isodecyl acid; aliphatic esters such as butyl oleate and methyl acetyl risilinolate; phosphoric esters such as tricresyl phosphate and tributyl phosphate; trimellitic esters ; Chlorinated paraffins Hydrocarbon oils such as alkyl diphenyls and partially hydrogenated terphenyls; process oils; and epoxy plasticizers such as epoxidized soybean oil and benzyl epoxy stearate.
- phthalic acid esters such as dibutyl phthalate, dihepty
- a polymer plasticizer can be used.
- the use of a high-molecular plasticizer maintains the initial physical properties for a long time as compared with the case of using a low-molecular plasticizer that is a plasticizer that does not contain a polymer component in the molecule. Further, the drying property (also referred to as coating property) when an alkyd paint is applied to the cured product can be improved.
- the polymer plasticizer include a vinyl polymer obtained by polymerizing a vinyl monomer by various methods; esters of polyalkylene glycol such as diethylene glycol dibenzoate, triethylene glycol dibenzoate, and pentaerythritol ester Polyester plasticizers obtained from dibasic acids such as sebacic acid, adipic acid, azelaic acid and phthalic acid and dihydric alcohols such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol and dipropylene glycol; Polyether polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, etc.
- esters of polyalkylene glycol such as diethylene glycol dibenzoate, triethylene glycol dibenzoate, and pentaerythritol ester Polyester plasticizers obtained from dibasic acids such as sebacic acid, adipic acid, azelaic acid and phthalic acid and dihydric alcohols such as ethylene
- Converted poly ethers such derivatives as etc., polystyrene and poly one a - poly styrene such as methyl styrene; polybutadiene, polybutene, polyisobutylene, butadiene Atarironitori Le, polyclonal port Puren like are limited to forces which may be mentioned Not something.
- polymeric plasticizers those that are compatible with the polymer of the component (A) are preferable.
- polyethers and bullet polymers are preferred.
- polypropylene glycol is more preferable because the surface hardening property and the deep-side hardening property are improved, and the hardening is not delayed after storage.
- a bullet polymer is preferred from the viewpoint of compatibility, weather resistance, and heat resistance.
- acrylic polymers such as alkyl acrylates, are more preferred, and acrylic polymers and Z or methacrylic polymers are more preferred.
- an atom transfer radical polymerization method is more preferable because a living radical polymerization method is preferable because a molecular weight distribution is narrow and a viscosity can be reduced.
- an alkyl acrylate monomer described in JP-A-2001-207157 can be subjected to continuous bulk polymerization at high temperature and pressure. Therefore, it is preferable to use a polymer obtained by the so-called SGO process!
- the number average molecular weight of the high molecular weight plasticizer is preferably 500 to 15000, more preferably 800 to 10,000, more preferably ⁇ 1000 to 8000, and specially ⁇ 1000. It is 1000-5000. Most preferably, it is 1000-3000. If the molecular weight is too low, the plasticizer flows out over time due to heat or rainfall, and the initial physical properties cannot be maintained for a long time, and the alkyd paintability cannot be improved. On the other hand, if the molecular weight is too high, the viscosity increases, and the workability deteriorates.
- the molecular weight distribution of the high-molecular plasticizer is not particularly limited, but is preferably narrow, and preferably less than 1.80. 1. 70 or less is more preferred 1. 60 or less is still preferred 1. 50 or less is more preferred 1. 40 or less is particularly preferred 1. 30 or less is most preferred.
- the number average molecular weight is measured by a GPC method for a vinyl polymer and by a terminal group analysis method for a polyether polymer.
- the molecular weight distribution (MwZMn) is measured by the GPC method (polystyrene conversion).
- the polymer plasticizer does not have a reactive silicon group! However, it may have a reactive silicon group. When it has a reactive silicon group, it acts as a reactive plasticizer and can prevent migration of a plasticizer which is a cured product. When the compound has a reactive silicon group, the number is preferably 1 or less, more preferably 0.8 or less per molecule on average. When using a plasticizer having a reactive silicon group, particularly an oxyalkylene polymer having a reactive silicon group, its number average molecular weight must be lower than that of the polymer of component (A). It is.
- Plasticizers may be used alone or in combination of two or more. Further, a low-molecular plasticizer and a high-molecular plasticizer may be used in combination. In addition, these plasticizers can be blended at the time of polymer production.
- the amount of the plasticizer to be used is 5 to 150 parts by weight, preferably 10 to 120 parts by weight, more preferably 20 to: LOO parts by weight based on 100 parts by weight of the polymer of the component (A). If the amount is less than 5 parts by weight, the effect as a plasticizer will not be exhibited, and if it exceeds 150 parts by weight, the mechanical strength of the cured product will be insufficient.
- a compound that generates a compound having a monovalent silanol group in the molecule by hydrolysis may be added.
- This compound has the effect of lowering the modulus of the cured product without deteriorating the stickiness of the surface of the cured product.
- Special The compound which produces trimethylsilanol is preferable.
- Examples of the compound that produces a compound having a monovalent silanol group in the molecule by hydrolysis include compounds described in JP-A-5-117521. Also, compounds which are derivatives of alkyl alcohols such as hexanol, octanol and decanol and which produce silicon compounds which generate RSiOH such as trimethylsilanol by hydrolysis,
- the resulting compound can be mentioned.
- the compound that forms a compound having a monovalent silanol group in the molecule by hydrolysis is 0.1 to 20 parts by weight based on 100 parts by weight of the organic polymer (A) having a reactive silicon group. , Preferably 0.5 to: used in the range of L0 parts by weight.
- a thixotropic agent may be added to the curable composition of the present invention, if necessary, to prevent sagging and improve workability.
- the anti-sagging agent is not particularly limited, and examples thereof include polyamide waxes; hydrogenated castor oil derivatives; and metal silicates such as calcium stearate, aluminum stearate, and barium stearate.
- a rubber powder having a particle diameter of 10 to 500 m as described in JP-A-11-349916 or an organic fiber as described in JP-A-2003-155389 is used, the thixotropic property is increased. And a composition with high workability is obtained.
- thixotropic agents anti-sagging agents
- the thixotropic agent is used in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the organic polymer (A) having a reactive silicon group.
- a compound containing an epoxy group in one molecule can be used.
- a compound having an epoxy group is used, the restorability of the cured product can be improved.
- Epoxy group-containing compounds include epoxidized unsaturated fats and oils, epoxidized unsaturated fatty acid esters, alicyclic epoxide conjugates, epoxide hydrin derivatives, and mixtures thereof. Etc. can be exemplified.
- E-PS epoxidized soybean oil, epoxidized ama-oil, bis (2-ethylhexyl) -4,5-epoxycyclohexane-1,2-dicarboxylate (E-PS), epoxy otatinol Stearate, epoxy butinolestearate and the like.
- E-PS is particularly preferred.
- the epoxy conjugate is preferably used in an amount of 0.5 to 50 parts by weight based on 100 parts by weight of the organic polymer (A) having a reactive silicon group.
- Photocurable substances can be used in the composition of the present invention.
- a photocurable material When a photocurable material is used, a film of the photocurable substance is formed on the surface of the cured product, and the tackiness and weather resistance of the cured product can be improved.
- a photo-curable substance is a substance which undergoes a chemical change in molecular structure in a short time by the action of light to produce physical changes such as curing.
- Many compounds of this kind are known, such as organic monomers, oligomers, resins and compositions containing them, and any commercially available compounds can be employed. Typical examples thereof include unsaturated acrylic compounds, polycaffeic acid burs, and azidhidani resin. As unsaturated acrylic compounds
- Aronix! All products are products of Toa Gosei Chemical Industry Co., Ltd.)
- Polyvinyl cinnamate is a photosensitive resin having a cinnamoyl group as a photosensitive group.
- Azide resin is known as a photosensitive resin having an azide group as a photosensitive group.
- a photosensitive resin see March 1972 Published on March 17, published by the Printing Society of Japan, page 93-, page 106-, page 117-), and these may be used alone or in admixture, and if necessary, sensitizers may be added. Can be used.
- the addition of a sensitizer such as ketones or nitro compounds, or an accelerator such as amines may enhance the effect in some cases.
- the photocurable substance is used in an amount of 0.1 to 20 parts by weight, preferably 0.5 to 10 parts by weight, based on 100 parts by weight of the organic polymer (A) having a reactive silicon group. If the amount is less than 0.1 part by weight, the effect of enhancing the weather resistance is not sufficient. If the amount is more than 20 parts by weight, the cured product becomes too hard and cracks tend to occur.
- An oxygen curable substance can be used in the composition of the present invention.
- oxygen-curable substance examples include unsaturated compounds that can react with oxygen in the air.They react with oxygen in the air to form a hardened film near the surface of the hardened material, and the surface becomes sticky or hardened. It acts to prevent the attachment of dust and dirt.
- Specific examples of the oxygen-curable substance include drying oils such as tung oil and linseed oil, and various alkyd resins obtained by modifying the compounds; acrylic polymers modified with the drying oil, epoxy resins and the like.
- NBR obtained by copolymerizing a liquid polymer such as a polymer of styrene, or a monomer such as Atari nitrile or styrene, which has copolymerizability with these gen-based compounds, so that the gen-based compounds are mainly used.
- liquid copolymers such as SBR and various modified products thereof (maleated modified product, boiled oil modified product, etc.). These may be used alone or in combination of two or more. Of these, tung oil and liquid gen-based polymers are particularly preferred.
- the effect may be enhanced by using a catalyst or a metal dryer that promotes the oxidative curing reaction.
- Examples of these catalysts and metal dryers include metal salts such as cobalt naphthenate, lead naphthenate, zirconium naphthenate, cobalt octoate, and zirconium octoate, and amine compounds.
- the amount of the oxygen-curable substance used is in the range of 0.1 to 20 parts by weight based on 100 parts by weight of the organic polymer having a reactive silicon group (A). More preferably, it is 0.5 to: LO parts by weight. When the amount is less than 0.1 part by weight, the improvement of the stainability becomes insufficient, and when it exceeds 20 parts by weight, the tensile properties of the cured product tend to be impaired.
- an oxygen-curable substance is preferably used in combination with a photocurable substance.
- An antioxidant can be used in the composition of the present invention.
- an antioxidant is used, the heat resistance of the cured product can be increased.
- antioxidants include hindered phenols, monophenols, bisphenols, and polyphenols. 1S Hindered phenols are particularly preferred.
- Tinuvin 622LD, Tinuvin 144, CHIMASSORB944LD, CHIMASSORB119FL all of which are manufactured by Chinoku 'Specialty' Chemicals Co., Ltd.
- MARK LA-57, MARK LA-62, MARK LA-67, MARK LA-63, MARK LA-68 all made by Asahi Denka Kogyo K.K.
- the hindered amine-based light stabilizer shown can also be used.
- Specific examples of the antioxidant are also described in JP-A-4-283259 and JP-A-9-194731.
- the amount of the antioxidant used is preferably in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the organic polymer (A) having a reactive silicon group, and more preferably 0.2. About 5 parts by weight.
- a light stabilizer can be used in the composition of the present invention.
- the use of a light stabilizer can prevent the cured product from deteriorating.
- Benzotriazole compounds, hinderdamine compounds, benzoate compounds and the like can be exemplified as light stabilizers.
- Hinderdamine compounds are particularly preferred.
- the light stabilizer is used in an amount of 0.1 to 10 parts by weight, more preferably 0.2 to 10 parts by weight, based on 100 parts by weight of the organic polymer having a reactive silicon group (A). 5 parts by weight. Specific examples of the light stabilizer are also described in JP-A-9-194731.
- a photocurable substance is used in combination with the composition of the present invention, particularly when an unsaturated acrylic compound is used, as described in JP-A-5-70531, 3 It is preferable to use a hindered amine light stabilizer containing a graded amine for improving the storage stability of the composition.
- Hindered amine light stabilizers containing tertiary amines Nubin 622LD, Tinuvin 144, CHIMASSORB119FL (all of which are manufactured by Chinoku's Specialty Chemicals Co., Ltd.); MARK LA-57, LA-62, LA-67, LA-63 And light stabilizers such as SANOL LS-765, LS-292, LS-2626, LS-1114, LS-744 (all manufactured by Sankyo Co., Ltd.).
- An ultraviolet absorber can be used in the composition of the present invention.
- the use of an ultraviolet absorber can improve the surface weather resistance of the cured product.
- Benzophenone-based, benzotriazole-based, salicylate-based, substituted tolyl-based and metal chelate-based compounds can be exemplified as ultraviolet absorbers.
- Benzotriazole-based compounds are particularly preferred.
- the amount of the UV absorber used is preferably in the range of 0.1 to 10 parts by weight, more preferably 0.2 to 10 parts by weight, based on 100 parts by weight of the organic polymer having a reactive silicon group (A). 5 parts by weight. It is preferable to use a phenolic or hindered phenolic antioxidant, a hindered amine light stabilizer and a benzotriazole ultraviolet absorber in combination.
- An epoxy resin can be added to the composition of the present invention.
- the composition to which the epoxy resin is added is particularly preferable as an adhesive, particularly an adhesive for exterior wall tiles.
- Flame retardant epoxy resins such as epichlorohydrin-bisphenol A type epoxy resin, epichlorohydrin-bisphenol F type epoxy resin, and glycidyl ether of tetrabromobisphenol A , Novolak type epoxy resin, hydrogenated bisphenol A type epoxy resin, bisphenol A glycidyl ether type epoxy resin of kapsum with propylene oxide, p-oxybenzoic acid glycidyl ether ester type epoxy resin, m— Aminopheno mono-epoxy resin, diamino diphenyl methane epoxy resin, urethane-modified epoxy resin, various alicyclic epoxy resins, N, N-diglycidyl dilin, N, N-diglycidyl o-toluidine , Triglycidyl isocyanurate
- the used epoxy resin can be used.
- a resin containing at least two epoxy groups in a molecule is preferred because it has high reactivity upon curing and has a point force such that the cured product easily forms a three-dimensional network.
- Even better Preferable examples include bisphenol A type epoxy resin or novolak type epoxy resin.
- the ratio of ( ⁇ ) ⁇ epoxy resin is less than 1 ⁇ 100, the effect of improving the impact strength and toughness of the cured epoxy resin becomes difficult, and the ratio of (A) Z epoxy resin exceeds 100Z1. In this case, the strength of the cured organic polymer becomes insufficient.
- the preferred ratio of use differs depending on the application of the curable resin composition and the like, but cannot be unconditionally determined. For example, the impact resistance, flexibility, toughness, and peel strength of the cured epoxy resin are improved. If you do
- the component (A) is used in an amount of 1 to 100 parts by weight, preferably 5 to 100 parts by weight, based on 100 parts by weight of the epoxy resin.
- an epoxy resin curing agent for curing the epoxy resin can be used in combination with the composition of the present invention.
- an epoxy resin curing agent that is generally used without any particular limitation can be used.
- Ketimine can be used as a curing agent for epoxy resins. Ketimine exists stably in a moisture-free state, and is decomposed into primary amine and ketone by water, and the generated primary amine becomes a room temperature curing agent for epoxy resin. When ketimine is used, a one-pack type composition can be obtained. Such ketimine can be obtained by a condensation reaction between an amine compound and a carbonyl compound.
- ketimine For the synthesis of ketimine, known amine compounds and carbodiyl conjugates may be used.
- the amine compounds include ethylenediamine, propylenediamine, trimethylenediamine, and tetramethylenediamine.
- Diamines such as 1,3,3 diaminobutane, 2,3 diaminobutane, pentamethylenediamine, 2,4 diaminopentane, hexamethylenediamine, p-phenylenediamine, p, ⁇ '-biphenylenediamine
- Polyvalent amines such as 1,2,3 triaminopropane, triaminobenzene, tris (2-aminoethyl) amine and tetrakis (aminomethyl) methane; polyalkyls such as diethylenetriamine, triethylenetriamine and tetraethylenepentamine; Lenpolyamine; polyoxyanolylene-based polyamine; ⁇ -aminopropyltriethoxy Aminosilanes such as silane, ⁇ (monoaminoethyl) - ⁇ -aminopropyltrimethoxysilane, ⁇ - ( ⁇ -aminoethyl) y-amin
- Examples of the carbon compound include aldehydes such as acetaldehyde, propionaldehyde, ⁇ -butyraldehyde, isobutyraldehyde, getylacetaldehyde, glyoxal, and benzaldehyde; cyclopentanone, trimethylcyclopentanone, and cyclohexanone.
- aldehydes such as acetaldehyde, propionaldehyde, ⁇ -butyraldehyde, isobutyraldehyde, getylacetaldehyde, glyoxal, and benzaldehyde
- cyclopentanone trimethylcyclopentanone
- cyclohexanone cyclohexanone
- cyclic ketones such as trimethylcyclohexanone; aliphatic ketones such as acetone, methyl ethyl ketone, methyl propyl ketone, methyl isopropyl ketone, methyl isobutyl ketone, methyl ketone, dipropyl ketone, diisopropyl ketone, dibutyl ketone and diisobutyl ketone; 13 dicarbonitrile such as acetylacetone, methyl acetoacetate, ethyl acetoacetate, dimethyl malonate, getyl malonate, methylethyl malonate, dibenzoylmethane Compounds; and the like can be used.
- the imino group When an imino group is present in the ketimine, the imino group may be reacted with styrene oxide; glycidyl ethers such as butyldaricidyl ether and arylglycidyl ether; and glycidyl ester.
- styrene oxide glycidyl ethers such as butyldaricidyl ether and arylglycidyl ether
- glycidyl ester These ketimines may be used singly or in combination of two or more.
- For 100 parts by weight of epoxy resin 1 to: LOO parts by weight may be used. The amount used depends on the type of epoxy resin and ketimine.
- the curable composition of the present invention includes phosphorus-based plasticizers such as ammonium polyphosphate and tricresyl phosphate, aluminum hydroxide, magnesium hydroxide, and heat-expandable graphite. Flame retardants can be added. The above flame retardants may be used alone or in combination of two or more.
- the flame retardant is used in an amount of 5 to 200 parts by weight, preferably 10 to: LOO part by weight based on 100 parts by weight of the component (A).
- a solvent can be used for the purpose of reducing the viscosity of the composition, increasing the thixotropy, and improving the workability.
- various compounds can be used without particular limitation. Specific examples include hydrocarbon solvents such as toluene, xylene, heptane, hexane, petroleum solvents, halogen solvents such as trichloroethylene, ester solvents such as ethyl acetate and butyl acetate, acetone, methyl ethyl ketone, and the like.
- Ketone solvents such as methyl isobutyl ketone, ether solvents, alcohol solvents such as methanol, ethanol and isopropanol, and silicone solvents such as hexamethylcyclotrisiloxane, otatamethylcyclotetrasiloxane and decamethylcyclopentasiloxane.
- the boiling point of the solvent is preferably 150 ° C or higher, more preferably 200 ° C or higher, and more preferably 250 ° C or higher, due to the problem of air pollution when the composition is used indoors. Particularly preferred.
- These solvents may be used alone or in combination of two or more.
- the amount of the solvent is preferably 3 parts by weight or less, more preferably 1 part by weight or less, based on 100 parts by weight of the organic polymer as the component (A). It is most preferred that it is not included.
- additives may be added to the curable composition of the present invention, if necessary, for the purpose of adjusting various physical properties of the curable composition or the cured product.
- additives include, for example, curability modifiers, radical inhibitors, metal deactivators, ozone deterioration inhibitors, phosphorus peroxide decomposers, lubricants, pigments, foaming agents, Ants, fungicides and the like.
- curability modifiers include, for example, curability modifiers, radical inhibitors, metal deactivators, ozone deterioration inhibitors, phosphorus peroxide decomposers, lubricants, pigments, foaming agents, Ants, fungicides and the like.
- curability modifiers include, for example, curability modifiers, radical inhibitors, metal deactivators, ozone deterioration inhibitors, phosphorus peroxide decomposers, lubricants, pigments, foaming agents, Ants, fungicides and the like.
- the curable composition of the present invention can be prepared as a one-component type in which all the components are premixed, sealed and stored, and are cured by the moisture in the air after construction, and can be separately used as a curing agent.
- Components such as a curing catalyst, a filler, a plasticizer, and water may be blended in advance, and the blended material and the polymer composition may be mixed before use to prepare a two-component type. From the viewpoint of workability, the one-component type is preferable.
- the curable composition is a one-component type, since all the components are preliminarily compounded, the components containing water are used after being dehydrated and dried in advance, or the pressure is reduced during mixing and kneading. It is preferred to dehydrate with water.
- the curable composition is of a two-component type, it is not necessary to blend a curing catalyst with a main ingredient containing a polymer having a reactive silicon group. Although there is little worry about gelling, it is preferable to dehydrate and dry when long-term storage stability is required.
- Dehydration and drying methods include heating and drying for powdered solids, and vacuum dehydration for liquids or dehydration using synthetic zeolite, activated alumina, silica gel, quicklime, magnesium oxide, etc. The method is preferred. Alternatively, a small amount of the isocyanate conjugate may be blended, and the isocyanate group may be reacted with water for dehydration. Further, an oxazolidinide compound such as 3-ethyl-2-methyl-2- (3-methylbutyl) 1,3 oxazolidine may be blended, reacted with water and dehydrated.
- an oxazolidinide compound such as 3-ethyl-2-methyl-2- (3-methylbutyl) 1,3 oxazolidine may be blended, reacted with water and dehydrated.
- Lower alcohols such as methanol and ethanol by vigorous dehydration drying; n-propyltrimethoxysilane, vinyltrimethoxysilane, vinylmethyldimethoxysilane, methylsilicate, ethyl silicate, ⁇ -mercaptopropylmethyldimethoxysilane, Storage stability is further improved by adding an alkoxysilane conjugate such as ⁇ -mercaptopropylmethylethoxysilane or ⁇ -glycidoxypropyltrimethoxysilane.
- the amount of the dehydrating agent is 0.1 to 20 parts by weight based on 100 parts by weight of the organic polymer having a reactive silicon group ( ⁇ ). Parts by weight, preferably in the range of 0.5 to 10 parts by weight, are preferred.
- the method for preparing the curable composition of the present invention is not particularly limited. Conventional methods such as mixing, kneading at room temperature or under heat using a mixer, roll, or stirrer, or dissolving and mixing the components using a small amount of a suitable solvent may be employed. .
- the curable composition of the present invention When exposed to the atmosphere, the curable composition of the present invention forms a three-dimensional network by the action of moisture, and cures to a solid having rubber-like elasticity.
- the curable composition of the present invention includes a pressure-sensitive adhesive, a sealing material for roads such as buildings “vehicles” and “automobiles", an adhesive, a molding agent, a vibration-proof material, a vibration-proof material, a sound-proof material, a foam material, and a paint. It can be used for spraying materials.
- a cured product obtained by curing the curable composition of the present invention is excellent in flexibility and adhesiveness, and among these, it is more preferable to use the cured product as a sealing material or an adhesive.
- electric and electronic parts materials such as solar cell back-side sealing materials, electric insulating materials such as insulating coatings for electric wires and cables, elastic adhesives, contact-type adhesives, spray-type sealing materials, crack repair materials, and tiles
- the curable composition of the present invention may be used for an adhesive for an interior panel, an adhesive for an exterior panel, an adhesive for tile, an adhesive for stone, an adhesive for ceiling finishing, an adhesive for floor finishing, and an adhesive for wall finishing.
- polyoxypropylene diol having a molecular weight of about 2,000 as an initiator propylene oxide was polymerized using a zinc hexocyano cobaltate glyme complex catalyst, and the number average molecular weight was about 25,500 (Tosoh HLC- Using 8120 GPC, TSK-GEL H type manufactured by Tosoh was used as a column, and polypropylene oxide having a molecular weight in terms of polystyrene measured using THF as a solvent was obtained. Subsequently, a methanol solution of 1.2 times equivalent of NaOMe was added to the hydroxyl group of the hydroxyl-terminated polypropylene oxide to remove methanol, and methanol was distilled off.
- Trimethoxysilane was reacted with 1.1 parts by weight of trimethoxysilane at 90 ° C for 2 hours with 100 parts by weight of polymer and 150 ppm of an isopropanol solution containing 3 wt% of platinum of a platinum siloxane complex as a catalyst.
- a terminal polyoxypropylene polymer (A-1) was obtained.
- NMR measured in CDC1 solvent using JEOL i ⁇ NM-LA400
- the relative value ( ⁇ ⁇ ⁇ ') of the peak integrated value (at around 0.6 ppm) was determined, and the silyl group introduction rate ( ⁇ , ⁇ ⁇ ) was examined.
- the average of the terminal trimethoxysilyl groups was 1. There were three.
- polystyrene-equivalent molecular weight measured using THF as the solvent was obtained.
- the polyoxyalkylene polymer having a trialkoxysilyl group as the component (A) As the polyoxyalkylene polymer having a trialkoxysilyl group as the component (A), the polymer (A-1 to A-2) obtained in Synthesis Examples 1 to 2 or a commercially available trimethoxysilyl group Using "ST-50" and “ST-53” manufactured by Hanse Chemie, which are organic polymers containing, and further using the polymer (A-3) obtained in Synthesis Example 3 having a methyldimethoxysilyl group, was blended in the following manner.
- an organotin catalyst dibutyltin bis (acetyl acetate) (manufactured by Nitto Danisei, Neostan U-220), and the component (C), buturtrimethoxysilane (manufactured by Toray's Dow Corning Silicone, A- 171) and N- ( ⁇ -aminoethyl) ⁇ -aminopropyltrimethoxysilane (manufactured by Toray 'Dowkoung' Silicone Co., Ltd., 1120) were weighed, mixed with a spatula for 3 minutes, and mixed. After mixing, a mold having a thickness of about 5 mm was filled with a spatula to prepare a flat surface.
- This time was defined as the curing start time, the surface was touched with a spatula, and the time when the compound did not adhere to the spatula was measured as skinning time.
- the skinning time was measured under the conditions of 23 ° C and 50% RH.
- Table 1 shows the evaluation results of the composition and the curability (skinning time).
- Table 1 shows the ratio (aZb) of the total number of moles of titanium atoms (a) in component (B) to the total number of moles of silicon atoms (b) in component (C).
- the skinning time was 96 hours or more, it was indicated as N.
- a silane compound represented by the following formula was reacted at 90 ° C. for 5 hours to obtain a polyoxypropylene polymer (A-4) having an average of 1.1 terminal trimethoxysilyl groups.
- the trialkoxysilyl group-containing organic polymer as the component ( ⁇ ), the polymers obtained in Synthesis Examples 1, 2, 4, and 6 ( ⁇ -1, ⁇ -2, ⁇ -4, Using ⁇ -6), it was compounded by the following method.
- Each of the curable compositions was extruded from the cartridge so as to be in intimate contact with various adherends (polycarbonate and acrylic) to prepare samples. After curing the prepared sample at 23 ° C for 7 days, the adhesiveness was evaluated by a 90 degree hand peel test. Judge in destruction mode The cohesive failure rate was designated as A for 90 to 100%, B for 70 to 90%, and C for 0 to 70%. Table 2 shows the results.
- Example Comparative Example Composition (parts by weight)
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Abstract
Description
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CN2005800145584A CN1950459B (zh) | 2004-05-07 | 2005-04-25 | 改善了固化性和粘接性的固化性组合物 |
EP05734515.9A EP1746134B1 (en) | 2004-05-07 | 2005-04-25 | Curable composition with improved curability and adhesiveness |
US11/579,551 US7893170B2 (en) | 2004-05-07 | 2005-04-25 | Curable composition having improved curability and adhesion |
JP2006512951A JP5225581B2 (ja) | 2004-05-07 | 2005-04-25 | 硬化性と接着性の改善された硬化性組成物 |
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