WO2008053875A1 - Hardening organic polymer, process for producing the same, and hardening composition containing the polymer - Google Patents
Hardening organic polymer, process for producing the same, and hardening composition containing the polymer Download PDFInfo
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- WO2008053875A1 WO2008053875A1 PCT/JP2007/071094 JP2007071094W WO2008053875A1 WO 2008053875 A1 WO2008053875 A1 WO 2008053875A1 JP 2007071094 W JP2007071094 W JP 2007071094W WO 2008053875 A1 WO2008053875 A1 WO 2008053875A1
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- 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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- C08F8/00—Chemical modification by after-treatment
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- 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
- C08G65/26—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 from cyclic ethers and other compounds
- C08G65/2603—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 from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—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 from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—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 from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
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- 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
- C08G65/26—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 from cyclic ethers and other compounds
- C08G65/2642—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 from cyclic ethers and other compounds characterised by the catalyst used
- C08G65/2645—Metals or compounds thereof, e.g. salts
- C08G65/2663—Metal cyanide catalysts, i.e. DMC's
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- 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
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
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- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
Definitions
- Curable organic polymer method for producing the same, and curable composition containing the same
- the present invention relates to a cage group having a hydroxyl group or a hydrolyzable group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond (hereinafter referred to as "reactive cage group").
- the present invention relates to a method for producing the organic polymer, and a curable composition containing the organic polymer.
- An organic polymer having at least one reactive group in the molecule is crosslinked at a room temperature by forming a siloxane bond accompanied by a hydrolysis reaction of the reactive group in moisture, etc. Thus, it is known that a rubber-like cured product is obtained.
- organic polymers having a reactive silicon group organic polymers whose main chain skeleton is a polyoxyalkylene polymer or a polyisobutylene polymer have already been industrially produced. Widely used in applications such as sealing materials, adhesives and paints. (See, for example, patent literature;! ⁇ 2)
- an organic polymer having a reactive cage group is used as a curable composition such as a sealing material, an adhesive, or a paint, various properties such as curability, adhesiveness, and mechanical properties are required.
- a curable composition containing an organic polymer having a reactive silicon group is usually used to cure an organic tin compound having a carbon-tin bond, represented by dibutyltin bis (acetylethylacetonate). Curing using a catalyst. When it is necessary to cure in a short time during use, a method such as increasing the amount of the curing catalyst is common. However, in recent years, the toxicity of organotin compounds has been pointed out, and attention must be paid to their use from the viewpoint of environmental safety.
- Patent Document 1 JP-A 52-73998
- Patent Document 2 Japanese Patent Laid-Open No. 63-6041
- Patent Document 3 Japanese Patent Laid-Open No. 55-9669
- Patent Document 4 Japanese Patent Laid-Open No. 2003-206410
- Patent Document 5 JP-A-5-117519
- Patent Document 6 Special Table 2005-501146
- the present invention relates to an organic polymer having a reactive cage group, an organic polymer that exhibits rapid curability substantially without using an organic tin-based catalyst, a method for producing the same, and It aims at providing the curable composition containing this.
- the present invention relates to
- each R 1 independently has a basic structure of a hydrocarbon group having 1 to 20 carbon atoms, and at least one hydrogen atom on the 1st to 3rd carbon atoms is electron-attracted.
- B R 2 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is independently a carbon atom. Hydrocarbon group having 1 to 20 atoms
- Per molecule Organic polymer (A) that has at least one on average!
- R 1 in general formula (1) is general formula (2):
- the organic polymer (A) has at least one main chain skeleton selected from the group consisting of a polyoxyalkylene polymer, a saturated hydrocarbon polymer, and a (meth) acrylate polymer.
- the organic polymer according to 1, wherein (I) to (V) has any of the following characteristics.
- R 2 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is each independently a carbon atom having 1 to 20 carbon atoms) It is a hydrogen group.)
- each a 1 R 1 is independently bonded to the 1st to 3rd carbon atoms, and any one or more hydrogen atoms are substituted with electron withdrawing groups.
- B R 2 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is each independently having 1 to 20 carbon atoms.
- 20 is a hydrocarbon group having a carbon number of 1 to 20.
- R 4 is a hydrocarbon group having 1 to 20 carbon atoms, and each c X is independently hydrolyzable.
- (IX) A curable composition comprising the organic polymer (A) according to any one of (I) to (VII).
- the organic polymer and curable composition of the present invention exhibit fast curability without using an organic tin-based catalyst.
- the organic polymer (A) of the present invention has an average of one or more reactive cage groups per molecule.
- the reactive silicon group is a group having a hydrolyzable group or a hydroxyl group bonded to a silicon atom and capable of crosslinking by forming a siloxane bond by a reaction accelerated by a silanol condensation catalyst.
- the reactive group is represented by the general formula (1): -SiR 1 R 2 X (1)
- each R 1 independently has a basic structure of a hydrocarbon group having 1 to 20 carbon atoms, and at least one hydrogen atom on the 1st to 3rd carbon atoms is electron-attracted.
- B R 2 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is independently a carbon atom. Hydrocarbon group having 1 to 20 atoms
- the reactive cage group in the organic polymer (A) of the present invention is, as described in the general formula (1), a hydrolyzable group or a hydroxyl group as a substituent bonded to the cage atom.
- it is a silicon group having a hydrocarbon group in which at least one hydrogen atom on the carbon atoms from the 1-position to the 3-position is substituted with an electron-withdrawing group.
- electron-withdrawing reactive group The organic polymer (A) of the present invention has an electron-withdrawing reactive group and thus has a methyl group or the like.
- organic polymers having reactive hydrocarbon groups having an unsubstituted hydrocarbon group for example, dimethoxymethylsilyl group, etc.
- R 1 in the general formula (1) is the general formula (2):
- d Y's are each independently an electron-withdrawing group.
- (3- (1) each independently is a hydrogen atom or an alkyl group having 1 to 19 carbon atoms)
- D is any one of 1, 2 and 3) in order to exhibit higher curability, and the substituent described in the general formula (2) is preferable.
- the group is a kind of R 1 described in the general formula (1) and represents a hydrocarbon group having an electron-withdrawing group at the 1-position.
- the electron-withdrawing group (denoted as Y in the general formula (2)) is not particularly limited.
- a halogen atom an oxygen-based substituent such as an alkoxy group or an acyloxy group, an amino group
- nitrogen-based substituents such as alkylamino group and ureido group, acyl group, alkoxycarbonyl group, nitro group, cyano group, sulfonyl group, perfluoroalkyl group, and electron-withdrawing aryl group.
- halogen atoms such as fluorine atom, chlorine atom, bromine atom and iodine atom; methoxy group, ethoxy group, 1 propoxy group, 2-propoxy group, 1 butoxy group, 2-butoxy group, tert alkoxy group such as butyloxy group, oxyoxy group, lauryloxy group, phenoxy group, benzyloxy group; acyloxy group such as acetoxy group, propanoyloxy group, benzoyloxy group; amino group, methylamino group, dimethylamino group, ethylamino group, Substituted amino groups such as a jetylamino group, a propylamino group, a dipropylamino group, and a diphenylamino group; a urethane bond such as a ureido group and a strong rubamate group; a group bonded by a urea bond; , Acyl groups such as benzoyl groups
- the ability of the resulting polymer to exhibit high curability is a halogen atom, an alkoxy group, a substituted or unsubstituted amino group, and a halogen atom, an alkoxy group, a substituted or non-substituted group, which is preferably a trifluoromethyl group.
- Halogen atoms for which substituted amino groups are more preferred, and substituted or unsubstituted amino groups are more preferred.
- the chlorine atom exhibits high curability due to the curing catalyst for the amine compound.
- the dialkylamino group exhibits higher / higher curability when a curing catalyst such as carboxylic acid is used.
- R 1 in the general formula (1) is not particularly limited, and examples thereof include a fluoromethyl group, a difluoromethyl group, a trifluoromethyl group, a 3, 3, 3-trifluoropropyl group, and a chloromethyl group.
- Tinole group dichloromethyl group, 2-chloroethyl group, 3-chloropropyl group, 2-chloropropyl group, bromomethyl group, odomethyl group, 3-chloropropyl group, methoxymethyl group, ethoxymethyl group, phenoxymethyl group, aminomethyl Group, N-methylaminomethyl group, N, N-dimethylaminomethyl group, N-ethylaminomethyl group, N, N-jetylaminomethyl group, acetoxymethyl group, methylcarbamate group, 2-cyanoamino group, etc.
- X in the general formula (1) represents a hydrolyzable group or a hydroxyl group.
- the hydrolyzable group is not particularly limited, and examples thereof include known hydrolyzable groups. Examples thereof include a hydrogen atom, a halogen atom, an alkoxy group, an acyloxy group, a ketoximate group, an amino group, an amide group, and an acid amide. Group, aminooxy group, mercapto group, alkenyloxy group and the like. Of these, hydrogen atoms, alkoxy groups, acyloxy groups, ketoximate groups, amino groups, amide groups, aminooxy groups, mercapto groups, and alkenyloxy groups are preferred because of their mild hydrolyzability! /, Easy! / Therefore, alkoxy groups such as methoxy group and ethoxy group are more preferable, and methoxy group and ethoxy group are particularly preferable.
- the electron-withdrawing reactive group is easy to obtain fast curability! /, And therefore preferably has two hydrolyzable groups and two hydroxyl groups!
- the hydrocarbon group R 2 described in the general formula (1) is not particularly limited, and examples thereof include alkyl groups such as a methyl group and an ethyl group, cycloalkyl groups such as a cyclohexyl group, phenyl groups, and the like. And aralkyl groups such as benzyl group and the like. Among these, a methyl group is particularly preferable.
- the electron-withdrawing reactive silicon group described in the general formula (1) is not particularly limited, and examples thereof include a dimethoxysilyl group, a chloromethyljetoxysilyl group, a dichloromethyldimethoxysilyl group, and a chloroethyldimethoxysilyl group.
- chloromethyldimethoxysilyl group methoxymethylenoresimethoxymethoxylinole group, methoxymethinoregetoxysilinole group, jetinoreaminomethyljetoxysilyl group, 3, 3, 3-trifluoropropyldimethoxy
- the silyl group is easily synthesized
- a chloromethyldimethoxysilyl group and a jetylaminomethyldimethoxysilyl group are more preferred because they have a higher degree of cure and a cured product is obtained.
- the main chain skeleton of the organic polymer (A) can be one having various main chain skeletons that are not particularly limited.
- Hydrocarbon polymer such as hydrogenated polyolefin polymer
- Polyester polymer obtained by condensation of dibasic acid such as adipic acid with Daricol or ring-opening polymerization of latatones
- Ethyl (meth) atari (Meth) acrylate polymer obtained by radical polymerization of monomers such as butyl and butyl (meth) acrylate
- radical polymerization of monomers such as (meth) acrylate ester monomers, butyl acetate, acrylonitrile and styrene
- a bure polymer obtained by polymerizing a bull monomer in the polymer; a polysulfide polymer; polyamide 6 by ring-opening polymerization of ⁇ -force prolatata, hexamethylene diamine Condensation of polyamide 6 and 6, hexamethylenediamine and sebacic acid by condensation polymerization of amine and adipic acid
- saturated hydrocarbon polymers such as polyisobutylene, hydrogenated polyisoprene, and hydrogenated polybutadiene, polyoxyalkylene polymers, and (meth) acrylate polymers are relatively low in glass transition temperature. , That the resulting cured product Preferred because of its excellent cold resistance! / !.
- the glass transition temperature of the organic polymer (A) is not particularly limited! /, But is preferably 20 ° C or less, more preferably 0 ° C or less, and 20 ° C. It is particularly preferred that
- the glass transition temperature exceeds 20 ° C, the viscosity in winter or in a cold region may become high and handling may be difficult, and the flexibility of the cured product may be reduced and elongation may be reduced. is there.
- the glass transition temperature is determined by the force S obtained by DSC measurement according to the measurement method specified in JISK7121.
- polyoxyalkylene polymer and the (meth) acrylic acid ester polymer have a high moisture permeability and a one-component composition, they are excellent in deep part curability and further in adhesiveness. Particularly preferred are polyoxyalkylene polymers.
- the method for introducing the reactive cage group is not particularly limited, and a known method can be used.
- a 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 that are reactive to the functional group, and a polymer having an unsaturated group is reacted. Get coalesced.
- a polymer having an unsaturated group is obtained by copolymerization with an epoxy compound having an unsaturated group.
- the reaction product obtained is hydrosilylated by allowing hydrosilane having an electron-withdrawing reactive group to act.
- the method (i) is preferred because the reaction is simple and there are few side reactions.
- the method (c) is preferred because a high conversion rate can be obtained in a relatively short reaction time.
- hydrosilane compound used in the method (i) include, for example, chloromethoxymethylenoresimethoxysilane, ethoxymethinolegetoxysilane, 3, 3, 3-trifnore Propinoresimethoxysilane, N, N-Getinoreaminomethinoreoxyoxysilane, Chloromethyl
- R 3 are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is each independently a carbon atom having 1 to 20 carbon atoms) It is a hydrogen group.)
- f pieces of X are each independently a hydrolyzable group or a hydroxyl group.
- e is 1 or 2
- f is 0 or 1
- g is 1 or 2
- e + f + g 3 is satisfied.
- each R 1 independently has a basic structure of a hydrocarbon group having 1 to 20 carbon atoms, and at least one hydrogen atom on the 1st to 3rd carbon atoms is electron-attracted.
- B R 2 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or (R ′) SiO— (R ′ is independently a carbon atom. Hydrocarbon group having 1 to 20 atoms
- R 4 is a hydrocarbon group having 1 to 20 carbon atoms.
- This is a method of reacting the organic compound described in the above. This method is (2).
- the silanol at the terminal of the organic compound described in the general formula (3) and the alkoxysilane described in the general formula (4) undergo dealcoholization condensation to form a siloxane bond, thereby forming an electron withdrawing property.
- a reactive key group is introduced.
- the reaction conditions are not particularly limited, but the organic polymer (A) can be efficiently obtained by using a silanol condensation catalyst.
- the terminal silanol may be silanediol or silanetriol. Since silanetriol has high reactivity, the reaction tends to proceed between polymers due to self-condensation reaction, so the end of the organic compound used in method (2) is monofunctional silanol (general formula (3) X is preferably not a hydroxyl group! /).
- X is preferably not a hydroxyl group! /
- the method for producing the organic polymer having a silanol at the end as described in the general formula (3) is not particularly limited, but the method shown in JP-A-10-87726 and the like can be used.
- R 4 in the general formula (4) is not particularly limited, and examples thereof include alkyl groups such as a methyl group and an ethyl group, cycloalkyl groups such as a cyclohexyl group, and alkyl groups such as a phenyl group. And an aralkyl group such as a benzyl group or a benzyl group. Of these, the methyl group is preferred.
- the silicon compound described in the general formula (4) is not particularly limited.
- Toximethylenotritriethoxysilane, jetinoleaminomethylenotritriethoxysilane, and 3,3,3-trifluoropropyltrimethoxysilane are preferred because they are easily available and synthesized. Further, rutriethoxysilane is more preferable because a polymer having a higher degree of curing can be obtained.
- the silanol condensation catalyst used in the reaction (2) is not particularly limited, and a known catalyst can be used. Of these, the amine compound is preferable because it can suppress the reaction between silanol groups or between the key compounds, and can selectively react the silanol group at the terminal of the organic polymer with the key compound. Examples of amine compounds include laurinoreamine, triethinoleamine, N, N dimethylaniline, 1,8 diazabicyclo (5,4,0) undecene 7 (DBU), and the like.
- the organic polymer (A) may be linear or branched, and its number average molecular weight is GPC !; 3,000-100,000 in styrene conversion, more preferably ⁇ 3 , 000—50, 000, particularly preferred ⁇ (3, 000—30,000, 000. If the number average molecular weight force is less than 3,000, the cured product tends to be disadvantageous in terms of elongation characteristics. Above 100,000, the viscosity tends to be inconvenient due to high viscosity.
- the polyoxyalkylene polymer essentially has the general formula (5):
- R 5 is a linear or branched alkylene group having 1 to 14 carbon atoms
- R 5 described in the general formula (5) Is preferably a straight-chain or branched alkylene group having 1 to 14 carbon atoms, more preferably a straight-chain or branched alkylene group having 2 to 4 carbon atoms.
- the repeating unit described in the general formula (5) is not particularly limited.
- the main chain skeleton of the polyoxyalkylene polymer may be composed of only one type of repeating unit, or may be composed of two or more types of repeating units.
- a polymer composed mainly of a propylene oxide polymer is preferable because it is amorphous or has a relatively low viscosity.
- the method for synthesizing the polyoxyalkylene polymer is not particularly limited. Examples thereof include a polymerization method using an alkali catalyst such as KOH, and an organoaluminum compound disclosed in JP-A-61-215623. Transition metal compounds such as complexes obtained by reacting with porphyrins Polymerization method using a borhuylin complex catalyst, Japanese Patent Publication No. 46-27250, Japanese Patent Publication No. 599-1336, US Patent No. 3278457, US Patent No. 3278458, US Patent No. 3278459 No. 3, U.S. Pat.No. 3,427,256, U.S. Pat.No. 3,427,334, U.S. Pat.No.
- a polymerization method using a double metal cyanide complex catalyst and a catalyst comprising a polyphosphazene salt disclosed in JP-A-10-273512.
- examples thereof include a polymerization method used and a polymerization method using a catalyst comprising a phosphazene compound disclosed in JP-A No. 11060722.
- the saturated hydrocarbon-based polymer is a polymer that does not substantially contain a carbon-carbon unsaturated bond other than an aromatic ring, and the polymer constituting the skeleton thereof is (1) ethylene, propylene, 1-butene, isobutylene.
- isobutylene-based polymers and hydrogenated polybutadiene-based polymers are preferred because they can easily introduce functional groups at the ends, easily control the molecular weight, and can increase the number of terminal functional groups. More preferred is an isobutylene polymer. [0045] Those whose main chain skeleton is a saturated hydrocarbon polymer have characteristics of excellent heat resistance, weather resistance, durability, and moisture barrier properties.
- all of the repeating units may be formed from isobutylene units, or may be a copolymer with other repeating units (monomers), but the surface properties of rubber properties are also improved to that of isopylene.
- Those having a repeating unit derived from 50% by weight or more are preferred, those having 80% by weight or more are more preferred, and those having 90 to 99% by weight are particularly preferred.
- the method for synthesizing the saturated hydrocarbon polymer is not particularly limited, and is a force S that can be exemplified by various polymerization methods that have been reported in the past, and particularly the living polymerization method that has been reported a lot in recent years.
- saturated hydrocarbon polymers especially isobutylene polymers
- inifer polymerization discovered by Kennedy et al. JP Kennedy et al., J. Polymer Sci., Polymer Chem. Ed. 1997, 15 volumes).
- Page 2843 can be easily produced, and can be polymerized with a molecular weight of about 500 to 100,000 with a molecular weight distribution of 1.5 or less, and various functional groups can be introduced at the molecular ends. ing.
- the (meth) acrylic acid ester monomer constituting the main chain of the (meth) acrylic acid ester polymer is not particularly limited, and known monomers can be used, for example, (meth) acrylic Acid, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl methacrylic acid, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, (Meth) acrylic acid tert-butyl, (meth) acrylic acid n-pentyl, (meth) acrylic acid n-hexyl, (meth) acrylic acid cyclohexyl, (meth) acrylic acid n-heptyl, ( (Meth) acrylic acid n-octyl, (meth) acrylic acid 2-ethylhexyl, (meth) nonyl (meth) acrylate, decyl (meth) acrylic Acid,
- the (meth) acrylic acid ester polymer may be a polymer obtained by copolymerizing a (meth) acrylic acid ester monomer and a bure monomer copolymerizable therewith.
- the bur monomer is not particularly limited, and is, for example, a styrene monomer such as styrene, butyl toluene, ⁇ -methyl styrene, chloro styrene, styrene sulfonic acid, and a salt thereof; perfluoroethylene, perfluoropropylene.
- Fluorine-containing butyl monomers such as vinylidene fluoride; benzene-containing butyl monomers such as butyltrimethoxysilane and butyltriethoxysilane; maleic anhydride, maleic acid, monoalkyl and dialkyl esters of maleic acid; fumaric acid, Monoalkyl esters and dialkyl esters of fumaric acid; maleimide, methylmaleimide, ethylmaleimide, propinomaleimide, butylmaleimide, hexylmaleimide, octylmaleimide, dodecylmaleimide, stearylmaleimide , Vinyl maleimide, cyclohexyl maleimide, and other maleimide monomers; acrylonitrile, methacrylonitrile, and other nitrile group-containing butyl monomers; acrylamide, methacrylamide, and other amide group-containing butyl monomers; vinyl acetate, Vinylen
- a copolymer having a styrenic monomer and a (meth) acrylic acid monomer has excellent physical properties.
- Ester monomer and methacrylate monomer power Particularly preferred are acrylate polymers composed of acrylate monomers, with (meth) acrylate polymers being more preferred.
- the organic polymer (A) when used for applications such as general construction, the physical properties such as the low viscosity of the compound, the low modulus of the cured product, the high elongation, the weather resistance, and the heat resistance are required.
- a butyl acrylate polymer comprising a butyl acrylate monomer is preferred.
- a copolymer mainly composed of ethyl acrylate is preferred.
- Polymers composed of ethyl acrylate have excellent oil resistance but may be slightly inferior in low-temperature properties (cold resistance).
- ethyl acrylate in order to improve low-temperature properties, a part of ethyl acrylate must be replaced with butyl acrylate. Is also possible. However, as the ratio of butyl acrylate is increased, its good oil resistance is impaired, so for applications that require oil resistance, the ratio is preferably 40% or less, and even 30% More preferably, it is as follows. It is also preferable to use 2-methoxyethyl acrylate or 2-ethoxyethyl acrylate in which oxygen is introduced into the side chain alkyl group in order to improve low temperature characteristics without impairing oil resistance.
- the ratio is preferably 40% or less when heat resistance is required.
- suitable polymers by changing the ratio in consideration of required physical properties such as oil resistance, heat resistance and low temperature characteristics.
- / Is an example of an excellent balance of physical properties such as oil resistance, heat resistance, and low temperature properties.
- these preferable monomers may be copolymerized with other monomers, and further block copolymerized. In this case, these preferable monomers are contained in a weight ratio of 40% or more. preferable.
- (meth) acrylic acid represents acrylic acid and / or methacrylic acid.
- the method for synthesizing the (meth) acrylic acid ester polymer is not particularly limited, and examples thereof include known methods.
- a polymer obtained by a normal free radical polymerization method using an azo compound or a peroxide as a polymerization initiator generally has a large molecular weight distribution value of 2 or more. It has the problem of increased viscosity. Therefore, it is a low-viscosity (meth) acrylate polymer having a narrow molecular weight distribution and a high molecular weight (meth) acrylate polymer having a crosslinkable functional group at the end of the molecular chain. In order to obtain a coalescence, it is preferable to use a living radical polymerization method.
- “living radical polymerization methods” “atom transfer radical polymerization” is used to polymerize (meth) acrylate monomers using organic halides or sulfonyl compounds as initiators and transition metal complexes as catalysts.
- the “combined method” has a halogen, which is relatively advantageous for functional group conversion, at the end, and has a high degree of freedom in designing initiators and catalysts.
- a method for producing a (meth) acrylic acid ester-based polymer having a functional group of for example, Matyjaszewski et al., Journal of American Chemical Society (J. Am. Chem. Soc.) 1995, Vol. 117, p. 5614 can be used.
- organic polymers (A) composed of various main chain skeletons may be used alone or in combination of two or more.
- 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 bond component is not particularly limited, and examples thereof include a group (hereinafter also referred to as an amide segment) generated by a reaction between an isocyanate group and an active hydrogen group.
- the amide segment has the general formula (6):
- R 6 represents a hydrogen atom or a substituted! /, Represents an unsubstituted organic group).
- the amide segment described in the general formula (6) is not particularly limited.
- a urethane group generated by a reaction of an isocyanate group and a hydroxyl group a urea group generated by a reaction of an isocyanate group and an amino group
- a functional group having an amide bond such as a thioethane group, which is generated by the reaction of an isocyanate group and a mercapto group, and an active hydrogen force in the urethane group, urea group, and thiourethane group, and further generated by a reaction with an isocyanate group.
- a urethane group generated by a reaction of an isocyanate group and a hydroxyl group a urea group generated by a reaction of an isocyanate group and an amino group
- a functional group having an amide bond such as a thioethane group, which is generated by the reaction of an isocyanate group and a mercapto group, and an active hydrogen force in the
- a curable composition comprising a polymer having a urethane bond or an ester bond in the main chain is hardened.
- the main chain may be cleaved at the urethane bond or ester bond portion due to heat or the like, and the strength of the cured product may be significantly reduced.
- the organic polymer (A) of the present invention includes those having a substituent having a urethane bond or an ester bond on the silyl group.
- the substituent on the silyl group which is a feature of the organic polymer (A) of the present invention, is not contained in the main chain constituting the network, even if the urethane bond or the ester bond is cleaved. It can be expected that the effect on the strength of the cured product is small.
- the main chain skeleton of the organic polymer (A) of the present invention has many amide segments, the viscosity of the polymer tends to increase. In addition, the viscosity may increase after storage, and the workability of the resulting composition may be reduced. Furthermore, as described above, the amide segment may be cleaved by heat or the like. Therefore, in order to obtain a composition having excellent storage stability and workability, it is preferable that the amide segment is not substantially contained. On the other hand, the amide segment in the main chain skeleton of the organic polymer (A) tends to improve curability.
- the average amide segment is preferably 1 to 10 per molecule; 1.5 to 5 is more preferred. Two to three pieces are particularly preferred. When the number is less than 1, the curability may not be sufficient, and when the number is more than 10, the polymer may become highly viscous and difficult to handle.
- the curable composition of the present invention essentially comprises the organic polymer (A) as a moisture-curable organic polymer component. If necessary, in addition to the organic polymer (A), the general formula (7):
- R 7 s are each independently a hydrocarbon group having 1 to 20 carbon atoms, or SiO— (R 8 is each independently having 1 to 20 carbon atoms. Hydrocarbon group)
- h X's are each independently a hydroxyl group or a hydrolyzable group.
- h is 1, 2, or 3.
- the organic polymer (C) having an average of one or more key groups described in (1) per molecule.
- the hydrolyzable group described in the general formula (7) is not particularly limited, and is a known hydrolysis group.
- examples thereof 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 alkenyloxy 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 alkenyloxy group are preferable, and the hydrolyzability is moderate and the polarity is easily adjusted. Because of this, the alkoxy group is more preferable.
- Two or more hydrolyzable groups and hydroxyl groups described in the general formula (7) may be bonded to the silicon atom, and these groups may be the same or different. .
- R 7 according to the general formula (7) is not particularly limited, for example, a cycloalkyl group such as an alkyl group, a cyclohexyl group such as a methyl group, Echiru group, Ariru group such as phenyl group, A hydrocarbon group such as an aralkyl group such as a benzyl group, or a general formula: R 8 SiO—
- R 8 is a methyl group, a phenyl group, or the like.
- a methyl group is preferred.
- the organic polymer (C) described in the general formula (7) is not particularly limited, and examples thereof include a trimethoxysilyl group, a triethoxysilyl group, a triisopropoxysilyl group, a dimethoxymethylsilyl group, and a diethoxymethyl. Examples include silyl group, diisopropoxymethylsilyl group, methoxydimethylsilyl group, and ethoxydimethylsilyl group.
- a trimethoxysilyl group, a triethoxysilyl group, and a dimethoxymethylsilyl group are preferable because they have high activity and good curability can be obtained, and a trimethoxysilyl group is more preferable.
- the dimethoxymethylsilyl group is particularly preferred because it is excellent in storage stability. Further, it is ethanol with a high safety of alcohol produced by the hydrolysis reaction of the triethoxysilyl group reactive reactive group. This is the most preferable.
- a polymer having a reactive silicon group having three hydrolyzable groups on a key atom provides high curability and good resilience, durability, and creep resistance. This is preferable because it tends to give a curable composition.
- Examples of the method for introducing a reactive cage group in the organic polymer (C) include known methods, and examples thereof include the following methods (e) to (g).
- a polymer having a functional group such as a hydroxyl group in the molecule is reactive with the functional group.
- An organic compound having an active group and an unsaturated group is reacted to obtain a polymer containing an unsaturated group.
- a polymer having an unsaturated group is obtained by copolymerization with an epoxy compound having an unsaturated group. Then, the reaction product obtained is hydrosilylated by reacting a hydrosilane having a reactive silicon group.
- a polymer having a functional group such as a hydroxyl group, an epoxy group or an isocyanate group in the molecule is reacted with a compound having a functional group reactive to the functional group and a reactive group.
- a polymer having a hydroxyl group at the terminal is an isocyanate group, and a reactive group.
- the method of reacting a compound having a reaction time is relatively short! /, High in the reaction time! /, And is preferable because the conversion rate can be obtained.
- the polymer having a key group is a curable composition having a lower viscosity and better workability than the polymer obtained by the method (g), and the polymer obtained by the method (f)
- the method (e) is particularly preferred because of its strong odor based on mercaptosilane.
- Hydrosilane compounds used in the method (e) are not particularly limited, for example, halogenated silanes such as trichlorosilane, dichloromethylsilane, chlorodimethylsilane, dichlorophenylsilane; trimethoxysilane, triethoxy Silane, dimethoxymethylsilane, diethoxymethylenosilane, dimethoxyphenylenosilane, ethenoresimethoxysilane, methoxydimethyl
- ketoximetosilanes such as bis (cyclohexylketoximate) methylsilane.
- halogenated silanes and alkoxysilanes are particularly preferred.
- the hydrolyzability of the curable composition from which alkoxysilanes are obtained is mild and easy to handle.
- Dimethoxymethylsilane is particularly preferred because of the high curability, storage stability, elongation characteristics, and tensile strength of a curable composition containing an easily obtainable organic polymer.
- trialkoxysilanes such as trimethoxysilane, triethoxysilane, and triisopropoxysilane contain an organic polymer (C) obtained by addition reaction of the hydrosilane compound. It is preferable because the curability of the curable composition is excellent.
- trialkoxysilanes having an alkoxy group having 1 carbon atom (methoxy group) such as trimethoxysilane may cause a disproportionation reaction to proceed rapidly, which is not recommended. As the leveling reaction proceeds, a highly reactive compound such as dimethoxysilane is formed. From the viewpoint of handling safety, it is more preferable to use a trialkoxysilane having an alkoxy group having 2 or more carbon atoms. From the viewpoint of availability and handling safety, triethoxysilane is particularly preferred. Les.
- a compound having a mercapto group and a reactive cage group is reacted with a polymer by radical addition reaction in the presence of a radical initiator and / or a radical source.
- the power that can be introduced into the saturated binding site is not particularly limited! /.
- the compound having the mercapto group and the reactive silicon group is not particularly limited, and examples thereof include ⁇ -mercaptopropyltrimethoxysilane, ⁇ -mercaptopropyljetoxymethylsilane, and mercaptomethyltriethoxysilane. It is done.
- the disproportionation reaction may proceed with the silane compound bonded. As the disproportionation reaction proceeds, a rather dangerous compound such as dimethoxysilane is formed. ⁇ —Mercaptopro Disproportionation reaction does not proceed. For this reason, when using a group in which three hydrolyzable groups such as trimethoxysilyl group are bonded to one silicon atom as the key group, the synthesis method of (f) or (g) is used. I prefer to use it.
- the organic polymer (C) may be linear or branched, and the number average molecular weight thereof is GPC !; about 3,000-100,000 in terms of styrene, more preferably 3, 000
- the method for producing the organic polymer (C) described in the general formula (7), wherein the main chain skeleton is a polyoxyalkylene polymer is not particularly limited.
- the method for producing the organic polymer (C) and the main chain skeleton being a saturated hydrocarbon polymer is not particularly limited, and examples thereof include, for example, Japanese Patent Publication No. 469659, Japanese Patent Publication No. 7-108928, Shown in various publications such as JP-A-63-254149, JP-A-64-22904, JP-A-1-197509, Patent Publication No. 2539445, Patent Publication No. 2873395, JP-A-7-53882! /, Manufacturing method.
- the method for producing the organic polymer (C) whose main chain skeleton is a (meth) acrylic acid ester polymer is not particularly limited, and for example, Japanese Patent Publication No. 3-14068, Japanese Patent Publication No.
- the organic polymer (C) and the organic polymer (A) can be mixed and used in an arbitrary ratio, and the ratio of the mixture is from the viewpoint of curing speed, stability, cost, and the like. You can choose.
- the organic polymer (A) and the organic polymer (C) may be of the same type or different types with respect to the main chain skeleton, but are preferably compatible with each other.
- the curable composition of the present invention has a curing catalyst (B) as a constituent component.
- the curing catalyst (B) plays a role of promoting the reaction of hydrolyzing and condensing the reactive cage groups of the organic polymer (A) and the organic polymer (C).
- the curing catalyst (B) is not particularly limited, and examples thereof include known catalysts, such as organic tin compounds, carboxylic acid metal salts, amine compounds, carboxylic acids, alkoxy metals, inorganic acids and the like.
- catalysts such as organic tin compounds, carboxylic acid metal salts, amine compounds, carboxylic acids, alkoxy metals, inorganic acids and the like.
- organic tin compounds such as organic tin compounds, carboxylic acid metal salts, amine compounds, carboxylic acids, alkoxy metals, inorganic acids and the like.
- an amine compound and a carboxylic acid are particularly preferable because the organic polymer (A) can be cured in an extremely short time while being a non-organotin catalyst.
- the amine compound used as the curing catalyst (B) is not particularly limited, and examples thereof include methenoleamine, ethylamine, propylamine, isopropylamine, butylamine, aminolamamine, hexylamine, octylamine, 2-ethylhexylamine.
- amine compounds have basicity. Amine compounds in which the pKa value of the conjugate acid is 11 or more are preferred because of their high catalytic activity. 1,2-Dimethyl-1, 4, 5, 6 —Tetrahydropi Limidine, DBU, DBN, etc. are particularly preferred because the conjugate acid has a pKa value of 12 or more and exhibits high catalytic activity.
- alkylamine having 5 to 20 carbon atoms is preferred.
- Alkylamine having 6 to 15 carbon atoms is preferable.
- the number of carbon atoms is less than 5, it tends to volatilize and the odor tends to increase. If the number of carbon atoms is greater than 15, it tends to become a solid at room temperature and may not function effectively as a catalyst.
- octylamine, 2-ethylhexylamine, laurylamine, and 3-jetylaminopropylamine are preferable because they can be easily obtained.
- an amino group-containing silane coupling agent (hereinafter sometimes referred to as aminosilane) may be used as the amine compound used in the curing catalyst (B).
- Aminosilane is a group containing a silicon atom to which a hydrolyzable group is bonded (hereinafter sometimes referred to as a hydrolyzable key group), and a substituted group is a compound having an unsubstituted amino group. is there.
- the substituent of the substituted amino group is not particularly limited, and examples thereof include an alkyl group, an aralkyl group, and an aryl group.
- the hydrolyzable cage group is not particularly limited, and examples thereof include the hydrolyzable groups described in the section of the organic polymer (A).
- a methoxy group, an ethoxy group and the like are preferable because they are mildly hydrolyzable and easy to handle.
- the number of hydrolyzable groups bonded to the silicon atom in aminosilane is preferably 2 or more, particularly 3 or more.
- the compound is not particularly limited, and for example, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ - aminopropyltriisopropoxysilane, ⁇ - aminopropylmethyldimethoxysilane, ⁇ - Aminopropylmethyljetoxysilane, ⁇ — ( 2 —aminoethyl) aminopropyltrimethoxysilane, ⁇ — (
- 2-aminoethyl) aminopropylmethyldimethoxysilane ⁇ - (2-aminoethyl) aminopropyltriethoxysilane, ⁇ - (2-aminoethyl) aminopropylmethyljetoxysilane, ⁇ - (2-aminoethyl) Aminopropyltriisopropoxysilane, ⁇ — (2- (2-aminoethyl) aminoethyl) aminopropyltrimethoxysilane, ⁇ — (6-Aminohexyl)
- aminosilanes an aminosilane having an amino group (one) from the viewpoint of curability.
- ketimine compounds that produce the above-described amine compounds by hydrolysis can also be used as the curing catalyst (i).
- Carboxylic acids to be used as the curing catalyst (i) of the present invention are not particularly limited, and examples thereof include acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, strong prillic acid, and pelargonic acid.
- heptane 1-strength rubonic acid and other alicyclic carboxylic acids acetoacetic acid, ethoxyacetic acid, glyoxylic acid, glycolic acid, darconic acid, sabinic acid , 2-hydroxytetradecanoic acid, yprolic acid, 2-hydroxyhexadecanoic acid, carrapinolic acid, uniperic acid, ambretolic acid, valeryt acid, 2-hydroxyoctadecanoic acid, 1 2 hydroxyoctadecanoic acid, 18 hydroxy Oxydecanoic acid, 9, 10 Dihydroxyoctadecanoic acid, 2, 2 Dimethyl-3 hydroxypropionic acid Ricinoleic acid, Camlolenic acid, Licanoic acid, Ferroic acid, Cerebronic acid and other oxygenated fatty acids; And halogen-substituted products of monocarboxylic acids such as acrylic acid and black benzoic acid.
- Aliphatic dicarboxylic acids include adipic acid, azelaic acid, pimelic acid, suberic acid, senosinic acid, gnoretanolic acid, oxalic acid, malonic acid, ethinoremalonic acid, dimethylenoremalonic acid, ethylmethylmalonic acid, jetylmalonic acid, succinic acid, 2, 2-dimethyl succinic acid, 2, 2-jetyl succinic acid, chain dicarboxylic acids such as 2, 2-dimethyl daltaric acid, 1, 2, 2-trimethyl-1, 3-cyclopentanedicarboxylic acid, Saturated dicarboxylic acids such as acetic acid; unsaturated dicarboxylic acids such as maleic acid, fumaric acid, acetylenedicarboxylic acid, and itaconic acid.
- aliphatic polycarboxylic acid examples include chain tricarboxylic acids such as aconitic acid, citrate, isochenoic acid, 3-methylisocitonic acid and 4,4-dimethylaconitic acid.
- Aromatic carboxylic acids include aromatic monocarboxylic acids such as benzoic acid, 9 anthracene rubonic acid, atrolactic acid, varnish acid, isopropylbenzoic acid, salicylic acid, toluic acid; phthalic acid, isophthalic acid, terephthalic acid, carboxy And aromatic polycarboxylic acids such as phenylacetic acid and pyromellitic acid.
- amino acids such as alanine, leucine, threonine, aspartic acid, glutamic acid, arginine, cystine, methineine nin, phenenolealanine, tryptophan, histidine and the like can be mentioned.
- carboxylic acid derivatives that generate carboxylic acids by hydrolysis of carboxylic acid anhydrides, esters, amides, nitriles, and acyl chlorides can also be used.
- carboxylic acid used as the curing catalyst (B) 2-ethylhexanoic acid, octylic acid, neodecanoic acid, oleic acid, or naphthenic acid is easily available, is inexpensive, It is preferable because of good compatibility with the organic polymer (A) and the organic polymer (C).
- Examples of the curing catalyst (B) other than the amine compound and carboxylic acid include, for example, tin carbonate, lead carboxylate, bismuth carboxylate, potassium carboxylate, calcium carboxylate, barium carboxylate, carboxylic acid Carboxylic acid metal salts such as titanium, zirconium carboxylate, hafnium carboxylate, vanadium carboxylate, manganese carboxylate, iron carboxylate, cobalt carboxylate, nickel carboxylate, cerium carboxylate; tetrabutyl titanate, tetrapropyl titanate, titanium tetrakis (Acetyl acetonate), lucaceto cetate), etc .; dibutyltin dilaurate, dibutyltin maleate, dibutyltin phthalate, dibutyltin dioctanoate, dibutyltin bis (2-ethylhexanoate), dibuty Tin bis (methyl maleate),
- the amount of the organic tin compound used is preferably 5 parts by weight or less with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). More preferably less than or equal to parts by weight. Most preferably less than or equal to 0.05 parts by weight does not substantially contain the most preferable.
- “substantially free of an organic tin-based catalyst” means that the content of the organic tin compound used as the curing catalyst (B) is V.
- the curing catalyst (B) two or more different types of catalysts may be used in combination. For example, by using a combination of the above amine compound and a carboxylic acid, an effect of improving curability is obtained. It is better than being possible.
- the amount of the curing catalyst (B) used is preferably 0.00;! To 20 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). Furthermore, 0.01 to; 15 parts by weight is more preferable. 0.01 to 10 parts by weight is particularly preferable. If the amount of the curing catalyst (B) is less than 0.001 part by weight, the curing rate may be insufficient, and the curing reaction may not proceed sufficiently. On the other hand, when the blending amount of the curing catalyst (B) exceeds 20 parts by weight, the curing rate is too high, and the usable time of the curable composition is shortened, resulting in poor workability and poor storage stability. Tend.
- an adhesiveness imparting agent such as a silane coupling agent can be added to the curable composition of the present invention as needed.
- the silane coupling agent is a compound having a hydrolyzable silicon group and other functional groups in the molecule, such as inorganic substrates such as glass, aluminum, stainless steel, zinc, copper, mortar, vinyl chloride, acrylic. It exhibits the effect of significantly improving the adhesion between various adherends such as organic substrates such as polyester, polyethylene, polypropylene and polycarbonate, and the curable composition under non-primer conditions or primer treatment conditions.
- silane coupling agent When a silane coupling agent is used under non-primer conditions, In particular, the effect of improving the adhesion to the resin is remarkable, and in addition to this, it can function as a physical property adjusting agent, a dispersibility improving agent for inorganic fillers, and the like.
- Examples of the hydrolyzable key group in the silane coupling agent include those in which Z in the general formula (7) is a hydrolyzable group, for example, the section of the organic polymer (A).
- the force S that can raise the hydrolyzable group exemplified in (1) is preferable, and among these, a methoxy group, an ethoxy group, and the like are preferable from the viewpoint of hydrolysis rate.
- the number of hydrolyzable groups in the silane coupling agent is preferably 2 or more, particularly 3 or more.
- Functional groups other than hydrolyzable silicon groups contained in the silane coupling agent include substituted or unsubstituted amino groups, mercapto groups, epoxy groups, carboxyl groups, bur groups, isocyanate groups, isocyanurates, halogens. Etc. Of these, substituted or unsubstituted amino groups, epoxy groups, isocyanate groups, isocyanurates, and the like are particularly preferred amino groups that are preferred due to their high effect of improving adhesion.
- a silane coupling agent having both a hydrolyzable silicon group and an amino group is generally called amino silane.
- aminosilane also exhibits a function as a curing catalyst (B).
- a curing catalyst B
- aminosilanes exemplified in the section of the curing catalyst (B) can be used. If you want to function more as an adhesion-imparting agent, you can use more aminosilane than is necessary as a curing catalyst.
- silane coupling agent other than aminosilane examples include, but are not limited to, for example, ⁇ -soyanatepropyltrimethoxysilane , ⁇ - isocyanatepropyltriethoxysilane , and ⁇ - isocyanatepropylmethyljetoxysilane.
- Mercaptosilanes such as mercaptomethyltriethoxysilane; ⁇ ⁇ -glycidoxypro Epoxysilanes such as xylsilane, / 3— (3,4-epoxycyclohexenole) ethinoretriethoxysilane; ⁇ -strength norboxechino retinoethoxysilane, ⁇ canolepoxy chinenophenyl bis (2-methoxyethoxy) ) Silane, ⁇ — / 3 -— (Carboxymethyl) aminoethyl
- Butyl-unsaturated silanes such as ⁇ - ataryloxypropyl triethoxysilane; ⁇ - halogen-containing silanes such as propyltrimethoxysilane; tris (3-trimethoxysilylpropyl) isocyanurate And isocyanurate silanes.
- a reaction product of aminosilane and epoxysilane, a reaction product of aminosilane and isocyanate silane, a reaction product of aminosilane and (meth) atalylooxy group-containing silane, or the like can be used. Condensates obtained by partially condensing the silanes can also be used.
- amino-modified silyl polymers silylated amino polymers, unsaturated aminosilane complexes, phenylamino long-chain alkylsilanes, aminosilylated silicones, silanolated polyesters and the like, which are derivatives of these, can also be used as silane coupling agents.
- the curable composition of the present invention may be used by adding only one kind of the silane force pulling agent to the composition. Two or more kinds may be used in combination.
- the amount of the silane coupling agent used in the present invention is from 0.0;! To 20 parts by weight based on 100 parts by weight of the total amount of the organic polymer ( ⁇ ) and the organic polymer (C). Preferred: 0 to 10 parts by weight is more preferred;! To 7 parts by weight is particularly preferred. If the blending amount is less than 0.01 parts by weight, adhesiveness may not be obtained sufficiently. Further, if the blending amount exceeds 20 parts by weight, a practical curing rate for practical use may not be obtained, and the curing reaction may not proceed sufficiently.
- adhesion-imparting agent a compound other than the silane coupling agent can be used, and specific examples thereof are not particularly limited.
- epoxy resin phenol resin, sulfur, alkyl titanate.
- aromatic polyisocyanates can be used. These adhesiveness-imparting agents may be used alone or in combination of two or more.
- a filler may be added depending on the application.
- the fillers are not particularly limited, for example, reinforcing fillers such as fume silica, precipitated silica, crystalline silica, fused silica, dolomite, anhydrous key acid, hydrous key 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 balun,
- fillers such as glass microballoons, phenolic resin and vinylidene chloride organic microbaluns, PVC powder, resin powders such as PMMA powder, and fibrous fillers such as glass fibers and filaments.
- the amount used is preferably 1 to 250 parts by weight, preferably 10 to 200 parts by weight,
- the filler is mixed with a dehydrating agent such as calcium oxide, and then sealed in a bag made of an airtight material. It can also be dehydrated and dried in advance by leaving it for a long time.
- a dehydrating agent such as calcium oxide
- a polymer powder made from a polymer such as methyl methacrylate or an amorphous material is used. Silica etc. can be used as filler.
- a composition having high transparency can be obtained by using hydrophobic silica, which is a fine powder of silicon dioxide having a hydrophobic group bonded to its surface, as a filler. Can be obtained.
- the surface of the silicon dioxide fine powder generally has a silanol group (one SiOH).
- silanol group By reacting this silanol group with an organosilicon halide or alcohol, (SiO hydrophobic group) What is produced is hydrophobic silica. Specifically, dimethylsiloxane and hexamethyldi are bonded to silanol groups present on the surface of fine silicon dioxide powder.
- the silicon dioxide fine powder whose surface is formed of silanol groups (SiOH) is called hydrophilic silica fine powder.
- fillers for which strength is selected such as strength, precipitated silica, crystalline silica, fused silica, dolomite, anhydrous key acid, hydrous key acid and carbon black, surface-treated fine calcium carbonate, calcined clay, clay, and active zinc white.
- strength such as strength, precipitated silica, crystalline silica, fused silica, dolomite, anhydrous key acid, hydrous key acid and carbon black, surface-treated fine calcium carbonate, calcined clay, clay, and active zinc white.
- the total amount of the organic polymer (A) and the organic polymer (C) is 100 parts by weight, it is used in a range of !! to 200 parts by weight.
- 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 with respect to 100 parts by weight of the polymer having a reactive group, preferable results are obtained.
- calcium carbonate has a greater effect of improving the strength at break, elongation at break, and adhesion of the cured product as the specific surface area increases.
- these fillers may be used alone or in combination of two or more.
- the particle size of the surface-treated fine calcium carbonate is preferably 0.5 111 or less.
- the surface treatment is preferably treated with a fatty acid or a fatty acid salt.
- the calcium carbonate having a large particle diameter is preferably 1 ⁇ m or more, and the surface treatment is preferably performed.
- an organic balloon or an inorganic balloon are preferable to add. These fillers can be surface-treated, and may be used alone or in combination of two or more.
- the balloon particle size is preferably 0.1 mm or less.
- 5 to 300 to 111 is preferable.
- the curable composition of the present invention has a cured product having good chemical resistance.
- a sizing board particularly a ceramic sizing board, and the like. It is preferably used for tile adhesives that remain on the joints, but it is desirable that the design of the outer wall and the design of the sealing material harmonize.
- high-quality outer walls are being used as outer walls due to the inclusion of spatter paints and colored aggregates.
- a flaky or granular substance having a diameter of 0.1 mm or more, preferably about 0.1 to 5. Omm is blended in the curable composition of the present invention, the cured product becomes such a material.
- this cured product In harmony with the high-quality outer wall and excellent chemical resistance, the appearance of this cured product is an excellent composition that lasts for a long time. If a granular material is used, the surface will be sandy or sandstone, and if a scaly material is used, the surface will be uneven.
- Preferred diameters, blending amounts, materials, and the like of the scaly or granular substance are as follows as shown in JP-A-9-53063!
- the diameter is 0.1 mm or more, preferably about 0.;! To 5.
- Omm and a material having an appropriate size is used according to the material and pattern of the outer wall. Those of about 0.2 mm to 5. Omm and about 0.5 mm to 5. Omm can also be used.
- the thickness is about 1/10 to 1/5 of the diameter (0.0; about! To 100 mm).
- the scale-like or granular material is mixed in advance in the main sealing material and transported to the construction site as a sealing material. When used, it is mixed in the main sealing material at the construction site.
- the scale-like or granular substance is blended in an amount of about! 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 blending amount is appropriately selected depending on the size of each scale-like or granular substance, the material of the outer wall, the pattern, and the like.
- the scale-like or granular substance natural substances such as key sand and my strength, synthetic rubber, synthetic resin, and inorganic substances such as alumina are used. In order to enhance the design when filling the joint, it is colored in an appropriate color according to the material and pattern of the outer wall.
- a balloon preferably having an average particle size of 0.1 mm or more
- the surface becomes sandy or sandstone-like, and the weight can be reduced. it can.
- Preferred diameters, blending amounts, materials, and the like of the balloon are as follows as disclosed in the publication of JP-A-10-251618!
- the balloon is a spherical filler with a hollow inside.
- This balloon material includes inorganic materials such as glass, shirasu, and silica, and organic materials such as phenol resin, urea resin, polystyrene, and saran.
- inorganic material and an organic material can be combined, or a plurality of layers can be formed by stacking. Inorganic or organic or composite of these It is possible to use a balloon that has been allowed to.
- the same balloon may be used, or a mixture of different types of balloons may be used.
- a balloon whose surface is processed or coated can be used, and a balloon whose surface is treated with various surface treatment agents can also be used.
- an organic balloon may be coated with calcium carbonate, talc, titanium oxide, or the like, or an inorganic balloon may be surface treated with a silane coupling agent.
- the balloon preferably has a particle size of 0 • 1 mm or more in order to obtain a sanded or sandstone rough surface. Those of about 0.2 mm to 5. Omm and about 0.5 mm to 5.0 mm can also be used. When the amount is less than 1 mm, even when blended in a large amount, the viscosity of the composition is only increased, and a rough feeling may not be exhibited.
- the blending amount of the balloon can be easily determined depending on the target sanding tone or sandstone tone. In general, it is desirable to blend particles having a particle size of 0.1 mm or more in a ratio of 5 to 25 vol% in terms of volume concentration in the composition.
- volume concentration of the balloon When the volume concentration of the balloon is less than 5 vol%, the feeling of roughness is not felt.When the balloon concentration exceeds 25 vol%, the viscosity of the adhesive becomes high and the modulus of the cured product becomes poor. The basic performance of the agent tends to be impaired.
- the volume concentration particularly preferably balanced with the basic performance of the sealing material is 8 to 22 vol%.
- the anti-slip agent as disclosed in JP-A-2000-154368 and the surface of the cured product as disclosed in JP-A-2001-164237 are made uneven.
- amine compounds for erasing, particularly primary and / or secondary amines having a melting point of 35 ° C or higher can be added.
- balloons are disclosed in JP-A-2-129262, JP-A-4-8788, JP-A-4-173867, JP-A-5-1225, JP-A-7-113073, JP-A-953063, Kaihei 10-25 dish 8, JP 2000-154368, JP 2001-164237, WO 97/05 201, etc.
- thermally expandable fine particle hollow pair disclosed in JP-A-2004-51701 or JP-A-2004-66749 can be used.
- Thermally expansible fine hollow body is charcoal A plastic sphere in which a low-boiling compound such as a hydrocarbon having 1 to 5 atomic atoms is encapsulated in a spherical shape with a polymer outer shell material (vinylidene chloride copolymer, acrylonitrile copolymer, or vinylidene chloride-acrylonitrile copolymer). It is.
- the curable composition of the present invention contains particles of cured sealant, the cured product can form irregularities on the surface and improve the design.
- preferred diameters, blending amounts, materials and the like of the cured sealant particles are as follows.
- the diameter is preferably 0.1 mm to 1 mm, more preferably about 0.2 to 0.5 mm.
- the compounding amount is preferably 5 to 100% by weight, more preferably 20 to 50% by weight in the curable composition.
- the material can be urethane resin, silicone, modified silicone, polysulfide rubber and the like, and is not limited as long as it can be used for a sealing material, but a modified silicone-based sealing material is preferable.
- a silicate can be added to the curable composition of the present invention as needed.
- This silicate acts as a cross-linking agent and has a function of improving the restorability, durability, and creep resistance of the cured product obtained from the curable composition of the present invention. Furthermore, the effect of improving adhesiveness, water-resistant adhesion, and adhesion durability under high temperature and high humidity conditions can be expected.
- As the silicate tetraalkoxysilane or a partially hydrolyzed condensate thereof can be used.
- the amount used is preferably 0.;! To 20 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). More preferred is 5 to 10 parts by weight.
- the silicate is not particularly limited. For example, tetramethoxysilane, tetraethoxysilane, ethoxytrimethoxysilane, dimethoxydiethoxysilane, methoxytriethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, tetra-n-butoxysilane. (Tetraalkyl silicate) and partial hydrolysis condensates thereof.
- the partial hydrolysis-condensation product of tetraalkoxysilane is more preferable because the organic polymer of the present invention has a greater effect of improving the resilience, durability, and creep resistance than tetraalkoxysilane.
- Examples of the partial hydrolysis-condensation product of tetraalkoxysilane include those obtained by adding water to tetraalkoxysilane and condensing it by partial hydrolysis using a conventional method.
- a plasticizer can be added to the curable composition of the present invention as needed.
- a plasticizer By adding a plasticizer, the viscosity and slump property 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.
- the plasticizer is not particularly limited, and examples thereof include phthalic acid esters such as dibutyl phthalate, diheptyl phthalate, bis (2-ethylhexinole) phthalate, and butyl benzyl phthalate; dioctyl dipate, dioctyl sebacate, Non-aromatic dibasic acid esters such as dibutyl sebacate and isodecyl succinate; Aliphatic esters such as butyl oleate and methyl acetyl tyricyllinoleate; Phosphate esters such as tricresyl phosphate and tributyl phosphate; Trimellitic acid esters; Chlorinated paraffins; Hydrocarbon oils such as alkyl diphenyls and partially hydrogenated terphenyls; Process oils; Epoxy plasticizers such as epoxidized soybean oil and benzil epoxystearate Can be given.
- phthalic acid esters such as
- a polymer plasticizer may be added and used.
- a high molecular plasticizer is used, the initial physical properties are maintained over a longer period than when a low molecular plasticizer that is a plasticizer containing no polymer component in the molecule is used.
- the drying property also referred to as paintability
- the polymer plasticizer is not particularly limited, and examples thereof include a bulle polymer obtained by polymerizing a bulle monomer by various methods; diethylene glycol dibenzoate, triethylene glycolo resin benzoate, pentaerythritol oleesterol, etc.
- Esters of polyanolylene glycolenols include dibasic acids such as sebacic acid, adipic acid, azelaic acid, and phthalic acid, and ethyl Dihydric alcohol strength such as N-glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, etc .; polyester plasticizers obtained; polyethylene glycols and polypropylene glycols with molecular weights of 500 or more and even 1000 or more Polyether polyols such as polytetramethylene glycol or derivatives obtained by converting hydroxyl groups of these polyether polyols to ester groups, ether groups, etc .; polystyrenes such as polystyrene and poly- a- methylstyrene; polybutadiene, polybutene, Examples thereof include polyisobutylene, butadiene monoacrylonitrile, and polychloroprene.
- polystyrene resin those compatible with the organic polymer (A) and the organic polymer (C) are preferable. From this point, polyethers and bull polymers are preferable. In addition, when polyethers are used as plasticizers, surface curability and deep curability are improved, and there is no delay in curing after storage, so that polypropylene glycol is more preferred. Bure polymers are preferred from the standpoint of compatibility, weather resistance, and heat resistance.
- acrylic polymers such as polyacrylic acid alkyl esters, which are preferred to acrylic polymers and / or methacrylic polymers, are more preferred.
- the polymer synthesis method is more preferably the atom transfer radical polymerization method, which is preferred to the living radical polymerization method because the molecular weight distribution is narrow and the viscosity can be lowered.
- the number average molecular weight of the polymer plasticizer is preferably 500 to 15000, but more preferably (800 to 10000, more preferably ⁇ 1000 to 8000, particularly preferably It is 1000 to 500 0. Most preferably, it is 1000 to 3000. If the molecular weight is too low, the plasticizer will flow out over time due to heat and rain, and the initial physical properties cannot be maintained over a long period of time. It may cause contamination due to adhesion, etc., and the alkyd paintability cannot be improved. If the molecular weight is too high, the viscosity becomes high and the workability deteriorates.
- the molecular weight distribution of the polymer plasticizer is not particularly limited, Narrow is preferred, 1. Less than 80 is preferred 1. Less than 70 is more preferred 1. Less than 60 is still preferred 1. Less than 50 is even more preferred 1. Less than 40 is particularly preferred 1. 30 or more The bottom is most preferred.
- the number average molecular weight is measured by a terminal group analysis method in the case of a polyether polymer, and by the GPC method in the case of other polymers.
- the molecular weight distribution (Mw / Mn) is measured by the GPC method (polystyrene conversion).
- the polymer plasticizer can be used as a compound having a reactive key group, having no! When it has a reactive cage group, it acts as a reactive plasticizer and can prevent migration of the plasticizer from the cured product.
- the average number per molecule is preferably 1 or less, and more preferably 0.8 or less.
- the number average molecular weight is lower than that of the organic polymer (A) and the organic polymer (C)! When the number average molecular weight of the oxyalkylene polymer is higher than that of the organic polymer (A) and the organic polymer (C), there is a possibility that a plasticizing effect cannot be obtained.
- the plasticizers may be used alone or in combination of two or more.
- a low molecular plasticizer and a high molecular plasticizer may be used in combination. These plasticizers can also be added at the time of polymer production.
- the plasticizer is used in an amount of 5 to 150 parts by weight, preferably 10 to 120 parts by weight, based on 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). Preferably 20 to 100 parts by weight. If it is less than 5 parts by weight, the effect as a plasticizer will not be exhibited. If it exceeds 150 parts by weight, the mechanical strength of the cured product will be insufficient.
- a tackifier can be added to the curable composition of the present invention as needed.
- the tackifier is not particularly limited, and any known one can be used regardless of whether it is solid or liquid at room temperature.
- a styrene block copolymer, a hydrogenated product thereof, a phenol resin, a modified resin can be used.
- Phenolic resins for example, cache oil modified phenolic resin, tol oil modified phenolic resin, etc.
- terpene phenolic resin for example, terpene phenolic resin, xylene phenolic resin, cyclopentadiene phenolic resin, coumarone indene resin, rosin resin, rosin ester resin , Hydrogenated rosin ester resin, xylene resin, low molecular weight polystyrene resin, styrene copolymer resin, petroleum resin (for example, C5 hydrocarbon resin, C9 hydrocarbon resin, C5C9 hydrocarbon copolymer resin, etc.), hydrogenated petroleum resin , Terpene resin, DCPD
- resin petroleum resin for example, resin petroleum resin.
- Styrene block copolymer and its hydrogenated products include styrene-butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), styrene ethylene butylene styrene block copolymer (SEBS), styrene ethylene Examples include propylene styrene block copolymer (SEPS) and styrene-butylene styrene block copolymer (SIBS).
- the tackifying resins may be used alone or in combination of two or more.
- the tackifying resin is used in a range of 5 to 1000 parts by weight, preferably 10 to 100 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C).
- a solvent or a diluent can be added to the curable composition of the present invention as necessary.
- Solvents and diluents are not particularly limited, and examples thereof include aliphatic hydrocarbons, aromatic hydrocarbons, alicyclic hydrocarbons, halogenated hydrocarbons, alcohols, esters, ketones, and ethers.
- the boiling point of the solvent is preferably 150 ° C or higher, more preferably 200 ° C or higher, 250 °, due to air pollution problems when the composition is used indoors. C or more is particularly preferable.
- the solvent or diluent may be used alone or in combination of two or more.
- a physical property adjusting agent for adjusting the tensile properties of the cured product to be produced can be added as necessary.
- a physical property modifier for adjusting the tensile properties of the cured product to be produced
- the physical property modifier By using the physical property modifier, the hardness when the curable composition of the present invention is cured can be increased, or conversely, the hardness can be decreased to cause elongation at break.
- the physical property modifiers may be used alone or in combination of two or more.
- a compound that generates a compound having a monovalent silanol group in the molecule by hydrolysis has an effect of lowering the modulus of the cured product without deteriorating the stickiness of the surface of the cured product.
- Particularly preferred are compounds that produce trimethylsilanol.
- Examples of the compound that generates a compound having a monovalent silanol group in the molecule by hydrolysis include compounds disclosed in JP-A-5-117521. Further, derivatives of alkyl alcohols such as hexanol, otanol, and decanol, which generate silicon compounds that generate R 3 SiOH such as trimethylsilanol by hydrolysis, are disclosed in JP-A-11-241029.
- polyhydric alcohols with 3 or more hydroxyl groups such as trimethylolpropane, glycerin, pentaerythritol, or sorbitol, which generate silicon compounds that generate RiOH such as trimethylsilanol by hydrolysis. Can do.
- JP-A-7-258534 which produces a silicon compound that produces RiOH such as trimethylsilanol by hydrolysis.
- a polymer having a crosslinkable hydrolyzable silicon-containing group and a silicon-containing group that can be converted into a monosilanol-containing compound by hydrolysis as disclosed in JP-A-6-279693 can also be used.
- the physical property adjusting agent is used in an amount of 0.5 to 20 parts by weight, preferably 0.5 to 10 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). Used in range.
- a thixotropic agent can be added to the curable composition of the present invention as 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; metal stalagmites such as calcium stearate, aluminum stearate, and barium stearate.
- rubber powder having a particle diameter of 10 to 500 ⁇ m as shown in JP-A-11-349916 or organic fiber as shown in JP-A-2003-155389 is used, thixo A composition having high workability and good workability can be obtained.
- These thixotropic agents may be used alone or in combination of two or more.
- the thixotropic agent is used in the range of 0.;! To 20 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C).
- a compound having an epoxy group in one molecule can be added to the curable composition of the present invention.
- Using compounds with an epoxy group will improve the resilience of the cured product.
- the compound having an epoxy group is not particularly limited, and examples thereof include compounds such as epoxidized unsaturated fats and oils, epoxidized unsaturated fatty acid esters, alicyclic epoxy compounds, epichlorohydrin derivatives, and the like.
- E-PS epoxycyclohexane 1, 2 dicarboxylate
- the epoxy compound is used in the range of 0.5 to 50 parts by weight based on 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C).
- a photocurable substance can be added to the curable composition of the present invention as needed.
- a photocurable material is used, a film of the photocurable material is formed on the surface of the cured product, and the stickiness and weather resistance of the cured product can be improved.
- the photo-curing substance is a substance that is changed by the action of light and undergoes a chemical change in the molecular structure in a short time, resulting in a change in physical properties such as curing.
- the photo-curing substance is not particularly limited, and is a known compound comprising an organic monomer, oligomer, resin or a composition containing them, for example, an unsaturated acrylic compound, polycalycic acid burs. Or an azide resin etc. can be used.
- Unsaturated acrylic compounds include monomers, oligomers or mixtures thereof having one or several acrylic or methacrylic unsaturated groups, such as propylene (or butylene, ethylene) glycol di (meth) acrylate, neo Monomers such as pentyldaricol di (meth) atalylate or oligoesters with a molecular weight of 10,000 or less can be mentioned.
- aronix M-210 special allyrate (bifunctional) aronix M-210, aronix M — 215, Aronix M — 220, Aronix M—233, Aronix M—240, Aronix M—245; (Trifunctional) Aronix M—305, Aronix M—309, Aronix M—310, Aronix M-315, Aronix M — 320, Alonix M-325 and (polyfunctional) Aronix M-400 and other forces S, especially acrylic functional groups Compounds containing 3 or more same functional groups on average in one molecule compounds that contain had sigma preferred are preferred. (The above is ALONIX! /, And the deviation is a product of Toa Gosei Chemical Co., Ltd.)
- Examples of polycacinic acid burs are photosensitive resins having a cinnamoyl group as a photosensitive group, and those obtained by esterifying polyvalve alcohol with cai cinnamate. Derivatives. Azide resins are known as photosensitive resins having an azide group as a photosensitive group. In general, in addition to a rubber photosensitive solution in which a diazide compound is added as a photosensitive agent, a “photosensitive resin” (March 17, 1972). There are detailed examples in Publishing, Printing Society Press, page 93-, page 106-, page 117-). These can be used alone or in combination, and the sensitizer can be used as needed. I can help.
- the photo-curing substance is used in a range of 0.;! To 20 parts by weight, preferably 0.5 to 10 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). 0. Less than 1 part by weight does not have the effect of improving weather resistance. If it is 20 parts by weight or more, the cured product becomes too hard and tends to crack.
- Oxygen curable substances are unsaturated compounds that can react with oxygen in the air, etc., and react with oxygen in the air to form a cured film near the surface of the cured product, resulting in surface stickiness and cured products.
- a compound having an action such as preventing dust from adhering to the surface.
- the oxygen curable substance is not particularly limited, and examples thereof include dry oils such as drill oil and amani oil, and various alkyd resins obtained by modifying the compound; acrylic heavy resins modified with dry oils.
- the amount of the oxygen curable substance used is in the range of 0 .;! To 20 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). More preferably, it is 0.5 to 10 parts by weight.
- the oxygen curable substance is preferably used in combination with a photocurable substance.
- the curable composition of the present invention can be added with an antioxidant (anti-aging agent) as necessary.
- antioxidant antioxidant
- the antioxidant is not particularly limited, and examples thereof include hindered phenol-based, monophenol-based, bisphenol-based, and polyphenol-based antioxidants, and among these, a hindered phenol-based antioxidant is preferable. .
- Tinuvin 622LD, Tinuvin 144, CHIMASSORB944LD, CHIMASSORB119FL (all of these are Chinoku's Specialty Chemicals Co., Ltd.); MARK LA—57, MARK LA—62, MARK LA 67, MARK LA-63 , MARK LA—68 (all are manufactured by Asahi Denka Kogyo Co., Ltd.); Sanoren LS—770, Sanoren LS—765, Sanoren LS—292, Sanoren LS—2626, Sanoren LS—1114, Sanor LS—744 (all above) Hindered amine light stabilizers shown by Sankyo Co., Ltd.) can also be used.
- the amount of the antioxidant used is preferably 0.;! To 10 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). The amount is preferably 0.2 to 5 parts by weight.
- a light stabilizer can be added to the curable composition of the present invention.
- Use of a photostabilizer can prevent photooxidative degradation of the cured product.
- the light stabilizer include benzotriazole, hindered amine, and benzoate compounds. Among these, hindered amine compounds are preferred.
- the light stabilizer is preferably used in the range of 0.;! To 10 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). 2 to 5 parts by weight is more preferable. Specific examples of the light stabilizer are also shown in JP-A-9 194731.
- a light stabilizer and a photocurable material are added in combination to the curable composition of the present invention, particularly when an unsaturated acrylic compound is used as the photocurable material, it is disclosed in JP-A-5-70531.
- the use of a tertiary amine-containing hindered amine light stabilizer as the hindered amine light stabilizer is preferred for improving the storage stability of the composition.
- Tertiary amine-containing hindered amine light stabilizers include Tinuvin 622LD, Tinuvin 144, CHIMAS SORB119FL (above !, also from Chinoku's Specialty Chemicals); MAR K LA—57, LA—62, LA—67 , LA—63 (all from Asahi Denka Kogyo Co., Ltd.); Sanonore: LS—765, LS-292, LS-2626, LS-1114 ,: LS—744 (all from Sankyo Co., Ltd.), etc. Light stabilizers.
- An ultraviolet absorber can be added to the curable composition of the present invention as necessary.
- the ultraviolet absorber is not particularly limited, and examples thereof include benzophenone-based, benzotriazole-based, salicylate-based, substituted tolyl-based and metal chelate-based compounds, and benzotriazole-based compounds are preferable.
- the amount of the UV absorber used is preferably 0.;! To 10 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). 2 to 5 parts by weight is more preferable. Further, it is preferable to use a combination of a phenol-based hindered phenol-based antioxidant, a hindered amine-based light stabilizer, and a benzotriazole-based ultraviolet absorber.
- an epoxy resin can be added to the curable composition of the present invention.
- the composition to which an epoxy resin is added is particularly preferable as an adhesive, particularly as an adhesive for exterior wall tiles.
- the epoxy resin is not particularly limited.
- a flame retardant such as epichlorohydrin-bisphenol Nore A type epoxy resin, epichlorohydrin bisphenol F type epoxy resin, tetraglycobisphenol A glycidyl ether, etc.
- Type epoxy resin novolak type epoxy resin, hydrogenated bisphenol A type epoxy resin, glycidyl ether type epoxy resin of bisphenol A propylene oxide adduct, p-oxybenzoic acid glycidyl ether type epoxy resin, m-aminophenol Epoxy resin, diaminodiphenylmethane epoxy resin, urethane-modified epoxy resin, various alicyclic epoxy resins, N, N diglycidyl dilin, N, N diglycidyl-o toluidine, triglyceride Examples include glycidyl ethers of polyhydric alcohols such as sidyl isocyanurate, polyalkylene glycol diglycidyl ether, and glycerin, epoxidized products of unsaturated polymers such as hydantoin type epoxy resins and petroleum resins.
- polyhydric alcohols such as sidyl isocyanurate, polyalkylene glycol diglycidyl ether, and
- an epoxy resin and a curing agent for curing the epoxy resin can be used in combination.
- the curing agent for epoxy resins known curing agents for epoxy resins that are not particularly limited can be used. For example, triethylenetetramine, tetraethylenepentamine, jetylaminopropylamine, N-aminoethylpiperidine.
- Secondary amines such as m-xylylenediamine, m-phenylylenediamine, diaminodiphenylmethane, diaminodiphenylsulfone, isophoronediamine, and amine-terminated polyethers; 2, 4, 6-tris (dimethylamino) Tertiary amines such as methyl) phenol and tripropylamine, and salts of these tertiary amines; polyamide resins; imidazoles; dicyandiamides; boron trifluoride complex compounds; Oxahydrophthalic anhydride, tetrahydrophthalic anhydride, dodecynyl succinic anhydride, pyrome anhydride Carbonic anhydrides such as litnic acid, chlorenic anhydride, etc .; alcohols; phenols; carboxylic acids; aluminum or zirconium And compounds such as diketone complex compounds.
- the curing agents may be used alone or in combination of
- the amount used is in the range of 0.;! To 300 parts by weight with respect to 100 parts by weight of epoxy resin.
- Ketimine can also be used as a curing agent for epoxy resins. Ketimine is stably present in the absence of moisture, and has the property of being decomposed into primary amine and ketone by moisture, and the resulting primary amine becomes a room temperature curable curing agent for epoxy resin. When ketimine is used in this way, a one-component composition can be obtained. Ketimine can be obtained by a condensation reaction between an amine compound and a force sulfonyl compound.
- the amine compound and carbonyl compound used for the synthesis of ketimine are not particularly limited, and examples thereof include known compounds.
- Examples of amine compounds include ethylenediamine,
- 2,3 diaminobutane pentamethylenediamine, 2,4 diaminopentane, hexamethylendiamine, p-phenylenediamine, p, p 'biphenylenediamine, and other diamines; 1, 2, 3, triaminopropane, triaminobenzene, Multivalent amines such as tris (2aminoethyl) amine, tetrakis (aminomethyl) methane; diethylenetriamine, triethylenetriamine, tetrane; ⁇ -aminopropyltriethoxysilane, ⁇ - ( ⁇ -aminoethyl) ⁇ -Aminosilane such as ⁇ -( ⁇ -aminoethyl) ⁇ - aminopropylmethyldimethoxysilane;
- Examples of carbonyl compounds include aldehydes such as acetoaldehyde, propionaldehyde, ⁇ butyraldehyde
- the imino group When an imino group is present in the ketimine, the imino group may be reacted with styrene oxide; glycidinoatenole such as butyl darisidinoatenore, arlinoleglycidinoreatenore; glycidinoreester, etc. Good.
- styrene oxide glycidinoatenole
- glycidinoatenole such as butyl darisidinoatenore, arlinoleglycidinoreatenore
- glycidinoreester etc. Good.
- These ketimines can be used alone or in combination of two or more types of epoxy resin, based on 100 parts by weight of epoxy resin; It depends on the type of ketimine.
- a phosphorus plasticizer such as ammonium polyphosphate and tricresyl phosphate
- a flame retardant such as aluminum hydroxide, magnesium hydroxide, and thermally expandable graphite should be added.
- the flame retardant may be used alone or in combination of two or more.
- the flame retardant is used in the range of 5 to 200 parts by weight, preferably 10 to 100 parts by weight with respect to 100 parts by weight of the total amount of the organic polymer (A) and the organic polymer (C). .
- additives may be added to the curable composition of the present invention as 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 degradation inhibitors, phosphorus peroxide decomposers, lubricants, pigments, foaming agents, Examples include ant agents and fungicides.
- curability modifiers include, for example, curability modifiers, radical inhibitors, metal deactivators, ozone degradation inhibitors, phosphorus peroxide decomposers, lubricants, pigments, foaming agents, Examples include ant agents and fungicides.
- These various additives may be used alone or in combination of two or more.
- Specific examples other than the specific examples of the additives listed in the present specification include, for example, JP-B-469659, JP-B-7-108928, JP-A-63-254149, JP-A-64-22904, and JP-A-64-22904. 2001
- the curable composition of the present invention can also be prepared as a one-component type in which all the ingredients are pre-blended and sealed and cured by moisture in the air after construction.
- Components such as a curing catalyst, a filler, a plasticizer, and water may be blended, and the blended material and the polymer composition may be mixed before use. From the viewpoint of workability, the one-component type is preferable.
- the curable composition is of a one-component type
- all the blended components are blended in advance, so that the blended components containing moisture are used after being dehydrated and dried in advance or reduced pressure during blending and kneading. Is preferably dehydrated.
- the curable composition is a two-component type, the reaction Since there is no need to add a curing catalyst to the main component containing a polymer having a functional key group, there is little concern about gelation even if some moisture is contained in the compound, but long-term storage stability When it is necessary, it is preferable to perform dehydration drying.
- the dehydration and drying method is a heat drying method for solid materials such as powders, and a vacuum dehydration method for liquid materials or a dehydration method using synthetic zeolite, activated alumina, silica gel, quicklime, magnesium oxide, etc. Is preferred.
- a small amount of an isocyanate compound may be blended and the isocyanate group and water reacted to dehydrate.
- an oxazolidine compound such as 3-ethyl-2-methyl-2- (3-methylbutyl) 1,3-oxazolidine may be added and reacted with water for dehydration.
- Low alcohol such as methanol, ethanol, etc.
- the amount of the dehydrating agent, in particular, a key compound capable of reacting with water such as butyltrimethoxysilane, is 0. Preferably 20 to 20 parts by weight, more preferably 0.5 to 10 parts by weight.
- the method for preparing the curable composition of the present invention is not particularly limited.
- the above-described components are mixed and kneaded using a mixer, roll, kneader, or the like at room temperature or under heating, or a suitable solvent.
- Ordinary methods such as using a small amount of the ingredients to dissolve and mixing the components 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 structure by the action of moisture, and cures to a solid having rubbery elasticity.
- the curable composition of the present invention comprises a pressure-sensitive adhesive, a sealing material for a building 'ship' automobile 'road, an adhesive, a mold preparation, a vibration-proof material, a vibration-damping material, a sound-proof material, a foam material, a paint, and the like. Can be used for spraying materials. Since the cured product obtained by curing the curable composition of the present invention is excellent in flexibility and adhesiveness, among these, it is more preferable to use it as a sealing material or an adhesive.
- electrical and electronic parts materials such as solar cell backside sealing materials, electrical insulation materials such as insulation covering materials for electric wires and cables, elastic adhesives, contact type adhesives, spray type sealing materials, crack repair materials , Tile adhesives, powder paints, casting materials, medical rubber materials, medical adhesives, medical equipment sealants, food packaging materials, sealing materials for joints of sizing boards, coating materials, primers , Conductive materials for shielding electromagnetic waves, heat conductive materials, hot melt materials, potting agents for electric and electronic materials, films, gaskets, various molding materials, and for the prevention and waterproofing of meshed glass and laminated glass end faces (cut parts) It can be used in various applications such as liquid sealants used in sealing materials, automobile parts, electrical parts, and various machine parts.
- the curable composition of the present invention includes an interior panel adhesive, an exterior panel adhesive, a tile adhesive, a stone adhesive, a ceiling finish adhesive, a floor finish adhesive, and a wall finish.
- Adhesive, vehicle panel adhesive, electrical 'electronic' precision equipment assembly adhesive, direct glazing sealant, double glazing sealant, SSG method sealant, or building working joint It can also be used as a sealing material.
- Polymer (P-1) 100 parts by weight of toluene, 10 parts by weight of toluene, and platinum content of 3 wt% Chloroplatinic acid in a 2-propanol solution was used as a catalyst in an amount of 800 ppm, and dimethylchlorosilane 0 Reaction was carried out with 9 parts by weight at 90 ° C for 2 hours.
- Toluene was removed by vacuum devolatilization to obtain dimethylchlorosilyl group-terminated polypropylene oxide (C-1).
- C-1 dimethylchlorosilyl group-terminated polypropylene oxide
- 3 ⁇ 4 The number of terminal dimethylchlorosilyl groups calculated from the integral of the spectrum obtained by N MR measurement (measured in CDC13 solvent using AMX400 manufactured by BRUKER) is about 1 on average per molecule. There were three.
- Polyoxypropylene diol having a molecular weight of about 2,000 was used as an initiator, and in the same manner as in Synthesis Example 1, polypropylene oxide having a number average molecular weight of 14,500 having a hydroxyl group at the end was obtained. Subsequently, by the same method as in Synthesis Example 1, a bifunctional polypropylene oxide (P-2) having a number average molecular weight of about 14,500 having a terminal aryl group was obtained.
- Polymer (P-2) 10 parts by weight of toluene to 100 parts by weight, platinum content of 3 wt% Using chloroplatinic acid in a 2-propanol solution as a catalyst, 500 ppm of the polymer was used, and dimethylchlorosilane 2 . 1 part by weight was reacted at 90 ° C for 2 hours. Toluene was removed by vacuum devolatilization to obtain dimethylchlorosilyl group-terminated polypropylene oxide (C-5). 3 ⁇ 4 N MR measurement showed that the average number of terminal dimethylchlorosilyl groups was about 1.6 per molecule.
- Tetrahydrofuran (THF) 75 parts by weight was added to 100 parts by weight of the polymer (C-5). To this was added dropwise 34 parts by weight of a saturated aqueous sodium hydrogen carbonate solution, and the mixture was stirred at room temperature for 15 minutes. Water was added to the solution to separate it into an organic layer and an aqueous layer, and the aqueous layer was removed. Further, azeotropic dehydration was carried out using toluene to obtain silanol-terminated polypropylene oxide (C 6). Conversion to silanol was confirmed by 1 H-NMR measurement.
- the curable composition using the organic polymer (A-1) is an organic polymer.
- allyl-terminated polypropylene oxide (P-2) synthesized in the same manner as shown in Synthesis Example 4 with a catalyst of 2 ppm of a 2 wt. Reaction was performed with 1.8 parts by weight of dimethoxysilane at 90 ° C. for 5 hours to obtain a methyldimethoxysilyl group-terminated polyoxypropylene polymer (C8).
- the average number of terminal methyldimethoxysilyl groups was about 1.6 per molecule as measured by NMR (measured in CDC13 solvent using JEOL $ iJNM-LA400).
- Neodecanoic acid Japan Epoxy Resin Co., Ltd.
- the curable composition using the organic polymer (A-2) has a faster curability than the curable composition using the organic polymers (C7) and (C8). Indicated.
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07830828.5A EP2080777B1 (en) | 2006-11-01 | 2007-10-30 | Hardening organic polymer, process for producing the same, and hardening composition containing the polymer |
| JP2008542130A JP5495567B2 (ja) | 2006-11-01 | 2007-10-30 | 硬化性有機重合体とその製造方法、および、これを含有する硬化性組成物 |
| CN200780041081.8A CN101535374B (zh) | 2006-11-01 | 2007-10-30 | 固化性有机聚合物及其制造方法以及含该聚合物的固化性组合物 |
| US12/432,376 US9249262B2 (en) | 2006-11-01 | 2009-04-29 | Curable organic polymer and method for production thereof, and curable composition containing the same |
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| JP2006-298101 | 2006-11-01 | ||
| JP2006298101 | 2006-11-01 |
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| US12/432,376 Continuation-In-Part US9249262B2 (en) | 2006-11-01 | 2009-04-29 | Curable organic polymer and method for production thereof, and curable composition containing the same |
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| US (1) | US9249262B2 (ja) |
| EP (1) | EP2080777B1 (ja) |
| JP (2) | JP5495567B2 (ja) |
| CN (2) | CN102443162B (ja) |
| WO (1) | WO2008053875A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102443162A (zh) | 2012-05-09 |
| EP2080777A1 (en) | 2009-07-22 |
| CN101535374B (zh) | 2015-09-23 |
| US9249262B2 (en) | 2016-02-02 |
| EP2080777B1 (en) | 2017-06-07 |
| JP5495567B2 (ja) | 2014-05-21 |
| US20090247712A1 (en) | 2009-10-01 |
| JPWO2008053875A1 (ja) | 2010-02-25 |
| CN101535374A (zh) | 2009-09-16 |
| CN102443162B (zh) | 2015-05-13 |
| EP2080777A4 (en) | 2011-06-08 |
| JP5690381B2 (ja) | 2015-03-25 |
| JP2013213229A (ja) | 2013-10-17 |
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