WO2004069923A1 - 重合体及び貯蔵安定性が改善された硬化性組成物 - Google Patents
重合体及び貯蔵安定性が改善された硬化性組成物 Download PDFInfo
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- WO2004069923A1 WO2004069923A1 PCT/JP2004/000356 JP2004000356W WO2004069923A1 WO 2004069923 A1 WO2004069923 A1 WO 2004069923A1 JP 2004000356 W JP2004000356 W JP 2004000356W WO 2004069923 A1 WO2004069923 A1 WO 2004069923A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
Definitions
- the present invention relates to a curable composition applicable to, for example, a sealing material, a gasket, an adhesive, and the like, and a polymer having a crosslinkable functional group.
- the present invention provides a curable composition having a crosslinkable silyl group at a terminal and a vinyl polymer having a specific monomer as a constitutional unit as an essential component, an application of the polymer, and a crosslinkable functional group at a terminal.
- a curable composition comprising a vinyl polymer having a crosslinkable silyl group at a terminal and a compound having a methyl ester group as essential components.
- curable composition having a functional group at the terminal for example, a moisture-curable liquid polymer having a crosslinkable silyl group at the terminal and having a main chain of polysiloxane, polyoxypropylene, or polyisobutylene is already known. ing. However, curable compositions using these also have points to be improved. Polysiloxanes are excellent in weather resistance, heat resistance, cold resistance, flexibility, etc., but still have problems in contamination and paintability by low molecular weight preads. Polyoxypropylene-based resins have excellent flexibility, paintability, and stain resistance, but may not have sufficient weather resistance.
- polyisobutylenes are characterized by weather resistance and moisture permeability, they have relatively high viscosity and may be difficult to handle. In addition, some contrivance is required to make them into one liquid.
- a polymer having an alkenyl group at a terminal is also used as a curable composition. It is known that by using a compound having a silyl group at the mouth as a curing agent, a cured product having excellent heat resistance, durability and deep-section curability can be obtained.
- polyethylene oxide ⁇ polypropylene oxide polytetrame Polyether polymers such as tylene oxide
- hydrocarbon polymers such as polybutadiene, polyisoprene, polychloroprene, polyisobutylene or hydrogenated products thereof
- polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polycaprolactone
- silicone-based polymer such as polydimethylsiloxane.
- a polyether-based cured product may have insufficient heat resistance and weather resistance depending on the application.
- heat resistance and weather resistance may be slightly insufficient for some applications due to internal double bonds remaining in the main chain.
- a polyisobutylene-based cured product having no internal double bond has excellent weather resistance, but has relatively high viscosity and may be difficult to handle.
- the polyester-based cured product may also have insufficient weather resistance depending on the application.
- silicone-based cured products are extremely excellent in terms of weather resistance, heat resistance, cold resistance, and workability, they still have problems with paint adhesion and contamination.
- acrylic rubber compositions containing activated chlorine or epoxy groups have been used as acrylic rubber compositions for molding, and molded products with good heat resistance and oil resistance have been obtained.
- a technique for introducing a vinyl group-containing organosilicon group has been proposed (Japanese Patent Laid-Open No. 61-127711, Japanese Patent Publication No. 2-185589). No. each gazette).
- the silicon group is not introduced into the terminal, the cured product has insufficient rubber properties such as elongation.
- (meth) acrylic polymers having a functional group at the terminal have been developed.
- the molecular weight and molecular weight distribution can be arbitrarily controlled, and functional groups can be quantitatively introduced into the terminals, resulting in weather resistance, heat resistance, and oil resistance. It has excellent mechanical properties and can be used for curable compositions having good mechanical properties.
- Examples of vinyl polymers having a crosslinkable silyl group at the terminal include: Some of them are listed in dedication 1. However, these documents do not mention the curable composition of a vinyl polymer having a monomer having a crosslinkable silyl group at a terminal and a methyl ester group as an essential constituent unit, which is described in the present invention. . No solution has been suggested for improvement of post-storage cure delay.
- Patent Literature 2 discloses an example of a (meth) acrylic polymer using methyl acrylate ⁇ methyl methacrylate as a monomer and having a functional group at a terminal. However, in these examples, the terminal is limited to a hydroxyl group, or the amount of methyl acrylate / methyl methacrylate used is not the appropriate amount shown in the present invention.
- Patent Document 3 discloses an invention relating to a technique for suppressing the retardation of curing of a curable composition using a polymer having a hydrolyzable silyl group terminal functional group similar to the present invention.
- the main component of the polymer is a polyether system and the components are completely different.
- Patent Document 4 discloses an example of a curable composition containing a vinyl polymer having a crosslinkable silyl group at a terminal as an essential component. However, they do not mention that a compound having a methyl ester group shown in the present invention is an essential constituent unit. Moreover, there is no solution for improvement of curing delay after storage.
- Patent Document 3 Patent Document 3
- Patent Document 4 Patent Document 4
- the purpose of the present invention is to provide the curability after storage and / or the mechanical properties of the cured product after curing.
- An object of the present invention is to provide a curable composition having a crosslinkable silyl group at a terminal, wherein the curable composition is improved.
- an object of the present invention is to provide a polymer having a crosslinkable functional group at a terminal and capable of providing a curable composition having improved curability after storage and / or mechanical properties of a cured product after curing. It is. Disclosure of the invention
- the first aspect of the present invention is to provide (I) a vinyl-based polymer having at least one crosslinkable silyl group represented by the general formula (1) at a terminal and having a monomer containing a methyl ester group as an essential constituent unit. It is a curable composition containing coalesced as an essential component.
- R 1 R 2 is an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and a carbon number? Ararukiru group to 20, or (R ') 3 S i O
- R' is a monovalent hydrocarbon group having 1 to 20 carbon atoms and the three R 'groups may be the same, different
- Y represents a hydroxyl group or a hydrolyzable group, and when two or more Ys are present, they may be the same or different.
- a indicates 0, 1, 2, or 3 and b indicates 0, 1, or 2.
- m is an integer from 0 to 19. However, it satisfies that a + mb ⁇ 1. ⁇
- the vinyl polymer as the component (I) is preferably a (meth) acrylic polymer.
- the (meth) acrylic polymer refers to a polymer in which 30% by weight or more of the constituent units of the polymer is a (meth) acrylic monomer.
- Monomer containing a methyl ester group constituting the vinyl polymer of the component (I) One is preferably methyl acrylate or methyl methacrylate, and more preferably methyl acrylate.
- the vinyl polymer of component (I) is preferably liquid at 23 ° C.
- the vinyl polymer as the component (I) is preferably one synthesized by living radical polymerization, and more preferably one synthesized by atom transfer radical polymerization.
- the ratio of the weight average molecular weight to the number average molecular weight of the vinyl polymer of the component (I) measured by gel permeation chromatography is preferably less than 1.8.
- the first curable composition of the present invention is preferably a one-part curable composition.
- the first curable composition of the present invention preferably contains (II) a condensation curing catalyst.
- a condensation curing catalyst As the condensation curing catalyst, a tin-based curing catalyst is preferable. .
- the first curable composition of the present invention preferably contains a (III) amine compound.
- the amino group of the amine compound is preferably a primary amine, and more preferably the amine compound is a silane coupling agent.
- One of the preferred embodiments of the first curable composition of the present invention is one containing a polyether polymer having at least one crosslinkable silyl group represented by the general formula (1).
- a second aspect of the present invention is a sealing material, a liquid gasket, and an adhesive using the first curable composition of the present invention.
- 5 to 50% by weight of the monomers constituting the main chain is methyl acrylate, more preferably 5% by weight of the monomers constituting the main chain. 220% of the monomers are methyl acrylate.
- a third alternative embodiment of the present invention provides at least one crosslinkable functional group.
- Preferably, 2 to 20% by weight of the monomers constituting the main chain is methyl methacrylate.
- the raw-chain Bier polymer of the above-mentioned polymer is a (meth) acrylic polymer.
- the (meth) acrylic polymer is a polymer in which 30% by weight or more of the structural units of the polymer is a (meth) acrylic monomer.
- the main chain of the above-mentioned polymer is preferably a polymer synthesized by living radical polymerization, and more preferably a polymer synthesized by atom transfer radical polymerization. .
- the crosslinkable functional group of the polymer is preferably a crosslinkable silyl group, an alkenyl group, a (meth) acryloyl group, or a hydroxyl group represented by the general formula (1).
- a fourth aspect of the present invention is a curable composition containing the polymer of the third aspect of the present invention as an essential component.
- the fifth aspect of the present invention is:
- the vinyl polymer of the component (I) is preferably a (meth) acrylic polymer, more preferably an acrylate polymer.
- the (meth) acrylic polymer is a polymer in which 30% by weight or more of the structural units of the polymer is a (meth) acrylic monomer.
- the crosslinkable silyl group represented by the general formula (1) is preferably at a terminal of the Bier polymer.
- the Bier polymer of the component (I) is preferably liquid at 23 ° C.
- the vinyl polymer as the component (I) is preferably one synthesized by living radical polymerization, and more preferably one synthesized by atom transfer radical polymerization.
- the ratio between the weight average molecular weight and the number average molecular weight of the vinyl polymer of the component (I) measured by gel permeation chromatography is preferably less than 1.8.
- the curable composition of the present invention is preferably a one-part curable composition.
- the carbon atom at the position of the methyl ester group of the compound other than (I) having the fifth (II) methyl ester group of the present invention is primary or secondary.
- the compound other than (II) having (II) a methyl ester group is preferably a dimethyl ester of dicarboxylic acid.
- Compounds other than (I) having a fifth (II) methyl ester group of the present invention include dimethyl malonate, dimethyl succinate, dimethyl dartrate, dimethyl adipate, dimethyl sebacate, methyl acetate, methyl propionate, Group consisting of methyl butyrate, methyl valerate, methyl caprylate, methyl cabrate, methyl laurate, methyl myristate, methyl palmitate, methyl stearate, methyl oleate, methyl ricinoleate, and methyl cocoate It is preferred that it is selected more.
- the compound other than (I) having the fifth (II) methyl ester group of the present invention is preferably a polymer containing, as a structural unit, a monomer having a methyl ester group.
- the monomer having a fifth methyl ester group of the present invention is preferably methyl acrylate.
- a compound having a methyl ester group is a copolymer containing a monomer having a methyl ester group as a constituent component, and among the ester groups of monomers other than the monomer having a methyl ester group,
- the ester group in which the alkoxy group is primary and has 5 or more carbon atoms is methyl ester
- the molar ratio is preferably not more than 80% based on the hydroxyl group.
- a compound having a methyl ester group is a copolymer containing a monomer having a methyl ester group as a constituent component, and among the ester groups of monomers other than the monomer having a methyl ester group,
- the ester group in which the alkoxy group is primary and has 2 to 4 carbon atoms is preferably 400% or less in molar ratio to the methyl ester group.
- the fifth curable composition of the present invention preferably contains (III) a condensation curing catalyst as an essential component.
- a condensation curing catalyst a tin curing catalyst is preferable.
- the fifth curable composition of the present invention preferably contains (IV) an amine compound.
- the amino group of the amine compound is preferably a primary amine, and more preferably the amine compound is a silane coupling agent.
- One of the preferable embodiments of the fifth curable composition of the present invention is a composition containing a polyester polymer having at least one crosslinkable silyl group represented by the general formula (1).
- a sixth aspect of the present invention is a sealing material, a liquid gasket, and an adhesive using the fifth curable composition of the present invention.
- the seventh aspect of the present invention is characterized in that it comprises a compound having a methyl ester group, and (I) a vinyl polymer having at least one crosslinkable silyl group represented by the general formula (1) as an essential component. It is a curable composition.
- the first aspect of the present invention is (I) a vinyl-based polymer having at least one crosslinkable silyl group represented by the general formula (1) at a terminal and having a monomer containing a methyl ester group as an essential constituent unit. It is a curable composition containing coalesced as an essential component.
- R 1 R 2 is an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, carbon number?
- Y represents a hydroxyl group or a hydrolyzable group, and when two or more Ys are present, they may be the same or different.
- a represents 0, 1, 2, or 3
- b represents 0, 1, or 2.
- m is an integer from 0 to 19. However, it satisfies that a + mb ⁇ 1.
- hydrolyzable group examples include groups generally used such as 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. .
- groups generally used such as 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.
- an alkoxy group, an amide group and an aminooxy group are preferred, but an alkoxy group is particularly preferred because of its mild hydrolyzability and easy handling.
- a hydrolyzable group or a hydroxyl group can be bonded to one silicon atom in the range of 1 to 3 and a + mb, which represents the sum of a and all b, is preferably in the range of 1 to 5.
- E When two or more hydrolyzable groups or hydroxyl groups are bonded to the crosslinkable silyl group, they may be the same or different.
- the number of silicon atoms forming a crosslinkable silyl group is one or more. In the case of silicon atoms linked by a siloxane bond or the like, the number is preferably 20 or less.
- the number of crosslinkable functional groups in the vinyl polymer is not particularly limited, but in order to obtain a cured product having higher crosslinkability, on average one or more, preferably 1.2, per molecule of the Bier polymer. Or more, more preferably 1.5 or more.
- the molecular weight between cross-linking points that greatly affects rubber elasticity is large, so that the cross-linkable silyl group
- at least one is at the end of the molecular chain. More preferably, all the crosslinkable functional groups have at the terminal of the molecular chain.
- the monomer containing a methyl ester group is not particularly limited, and examples thereof include methyl acrylate, methyl methacrylate, dimethyl maleate, and methyl ester-substituted styrene.
- Methyl acrylate and methyl methacrylate are preferred, and methyl acrylate is particularly preferred, from the viewpoint of the smoothness of polymerization and the high effect of suppressing the retardation of curing.
- the ratio of these monomers having a methyl ester group to other monomers is not limited. In order to improve the storage stability of the curable composition of the present invention, it is preferable that many monomers having a methyl ester group are polymerized, but generally, a polymer of a monomer having a methyl ester group is another polymer.
- the glass transition temperature is higher than that of a polymer of a monomer having an ester group having a large number of carbon atoms, which may increase the viscosity of the liquid resin or deteriorate the low-temperature characteristics. It is preferable that an appropriate balance is taken according to the desired characteristics. This balance will be described later in the third section of the present invention.
- the vinyl monomer constituting the main chain of the vinyl polymer preferably contains alkyl (meth) acrylate or alkoxyalkyl (meth) acrylate as a main component in view of the physical properties of the product.
- alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, and (meth) alkyl.
- Examples include stearyl acrylate, but methyl acrylate, ethyl acrylate, butyl acrylate, isopti acrylate , Hexyl are preferred to acrylic acid 2-Echiru, Echiru acrylate, butyl acrylate is particularly preferred.
- alkoxyalkyl (meth) acrylate examples include 2-methoxyl (meth) acrylate, 2-ethoxyxyl (meth) acrylate, and 1-3-methoxybutyl (meth) acrylate, and 2-methoxyethyl acrylate. 2-ethoxyhexyl (meth) acrylate is particularly preferred.
- vinyl monomers may be copolymerized in addition to the alkyl (meth) acrylate and the alkoxyalkyl (meth) acrylate.
- Vinyl monomers that may be copolymerized include (meth) acrylic acid, phenyl (meth) acrylate, tolyl (meth) acrylate, benzyl (meth) acrylate, and 2-hydroxyethyl (meth) acrylate.
- Acrylic acid monomer Styrene monomer such as styrene, vinyltoluene, -methylstyrene, chlorostyrene, styrenesulfonic acid and salts thereof; fluorine-containing such as perfluoroethylene, perfluoropropylene, vinylidene fluoride Vinyl monomer; silicon-containing vinyl such as biertrimethoxysilane, biertriethoxysilane, etc. Nyl-based monomers; maleic anhydride, maleic acid, maleic
- Maleimide monomers such as maleimide, methylmaleimide, ethylmaleimide, propylmaleimide, butylmaleimide, hexylmaleimide, octylmaleimide, dodecylmaleimide, stearylmaleimide, phenolmaleimide, cyclohexylmaleimide, etc .; acrylonitrile, methacrylonitrile, etc.
- a vinyl group-containing monomer such as acrylamide and methacrylamide; a vinyl ester such as vinyl acetate, vinyl propionate, vinyl pivalate, vinyl benzoate, and vinyl cinnamate; And alkenes such as propylene; conjugated diene such as butadiene and isoprene; and biel chloride, vinylidene chloride, aryl chloride and allylic alcohol.
- alkyl (meth) acrylate or / and alkoxyalkyl (meth) acrylate which is the main constituent unit of the pinyl polymer.
- alkyl acrylate is a polymer of all biel monomers that constitute a vinyl polymer. 60% or more and 80% or less by weight based on the total amount, and 20% or more and 40% by weight based on the total amount of all vinyl monomers in which the alkoxyalkyl acrylate constitutes the vinyl polymer.
- the following vinyl polymers are preferred.
- ethyl acrylate is 30% or more and 50% or less by weight based on the total amount of all vinyl monomers
- butyl acrylate is 20% or more by weight based on the total amount of all vinyl monomers.
- a biel polymer in which the weight ratio of the 2-methoxyethyl acrylate is 20% or more and 40% or less with respect to the total amount of all the Bier monomers is good.
- the weight ratio of ethyl acrylate is 50% or more and 80% or less
- the weight ratio of butyl acrylate is 0% or more and 20% or less
- the weight ratio of 2-methoxyethyl acrylate is 20% or more and 40% or less.
- the oil resistance is excellent, and ethyl acrylate is 0% to 30% by weight, butyl acrylate is 40% to 80% by weight, and 2-methoxyethyl acrylate is 2% by weight.
- ethyl acrylate is 0% to 30% by weight
- butyl acrylate is 40% to 80% by weight
- 2-methoxyethyl acrylate is 2% by weight.
- the alkyl acrylate is preferably at least 20% and at most 60% by weight, based on the total amount of all the Biel monomers constituting the vinyl polymer, and A vinyl polymer in which the alkoxyalkyl acrylate is at least 40% and at most 80% by weight based on the total amount of all the vinyl monomers constituting the vinyl polymer is preferred.
- the total amount of ethyl acrylate and butyl acrylate is 20% or more and 60% or less by weight based on the total amount of all vinyl monomers constituting the vinyl polymer, and 2-methoxyethyl acrylate is used.
- 10% or more and 30% or less by weight of the vinyl polymer and 10% by weight of the butyl acrylate constituting the vinyl polymer When it is at least 30% and the weight ratio of 2-methoxyethyl acrylate to the vinyl polymer is at least 40% and at most 80%, oil resistance and cold resistance will be excellent.
- Ethyl acrylate is 0% or more and 10% or less by weight constituting the vinyl polymer, and butyl acrylate is 30% or more and 60% or less by weight of the Bier polymer and acrylic acid 2 —
- the weight ratio of methoxyethyl to the vinyl polymer is 40% or more and 80% or less, it is particularly excellent in cold resistance.
- the weight ratio of ethyl acrylate is 30% or more and 60% or less
- the weight ratio of butyl acrylate is 0% or more and 10% or less
- the weight ratio of 2-methoxyethyl acrylate is 40% or more and 80% or less, Excellent oil and cold resistance.
- the alkyl acrylate has a weight ratio of 80% or more to 100% or less with respect to the total amount of all the vinyl monomers constituting the vinyl polymer, and A vinyl polymer in which the alkoxyalkyl acrylate is 0% to 20% by weight based on the total amount of all vinyl monomers constituting the Bier polymer is preferable.
- the weight ratio of ethyl acrylate to the total amount of all vinyl monomers constituting the vinyl polymer is 40% or more and 60% or less, and the butyl acrylate is an all vinyl monomer constituting the vinyl polymer.
- the weight ratio is 0% or more and 40% or less and the 2-methoxyethyl acrylate is 0% or more and 20% or less based on the total amount of all vinyl monomers constituting the pinyl polymer, It has excellent oil resistance, heat resistance, surface tackiness and surface contamination.
- Ethyl acrylate is 0% to 40% by weight based on the total amount of all vinyl monomers constituting the vinyl polymer, and butyl acrylate is the vinyl polymer. 60% or more and 100% or less by weight based on the total amount of all vinyl monomers constituting the polymer and 2-methoxyethyl acrylate is the weight ratio based on the total amount of all vinyl monomers constituting the vinyl polymer. If it is 0% or more and 20% or less, it has excellent oil resistance, heat resistance, and rubber elasticity.
- the molecular weight distribution of the pinyl polymer that is, the ratio between the weight average molecular weight and the number average molecular weight measured by gel permeation chromatography is not particularly limited, but is usually 1.8 or less, preferably 1 7 or less, more preferably 1.6 or less, still more preferably 1.5 or less, particularly preferably 1.4 or less, and most preferably 1.3 or less.
- a chromate form is used as a mobile phase and a polystyrene gel column is used, and the number average molecular weight and the like can be determined in terms of polystyrene.
- the number-average molecular weight of the vinyl polymer is not particularly limited, but is preferably in the range of 500 to 1,000, 0000, and more preferably 100,000 to: L0000, 0000. . Polymerization method of vinyl polymer
- the polymerization method of the vinyl polymer is not limited, but controlled radical polymerization is preferred, living radical polymerization is more preferred, and atom transfer radical polymerization is particularly preferred. These will be described below.
- the radical polymerization method is a general radical polymerization method in which a monomer having a specific functional group is simply copolymerized with a vinyl monomer using an azo compound, a peroxide, or the like as a polymerization initiator. It can be classified into the “controlled radical polymerization method” that can introduce a specific functional group at a controlled position such as a terminal.
- the “general radical polymerization method” is a simple method, but in this method, a monomer having a specific functional group is only stochastically introduced into the polymer, so that a polymer having a high functionalization rate is obtained. If you do, use this monomer in quite large amounts On the other hand, the use of a small amount increases the proportion of the polymer into which the specific functional group is not introduced. In addition, since it is a free radical polymerization, there is a problem that only a polymer having a wide molecular weight distribution and a high viscosity can be obtained.
- the “controlled radical polymerization method” further includes a “chain transfer agent method” in which a biel polymer having a functional group at a terminal is obtained by performing polymerization using a chain transfer agent having a specific functional group. It can be classified as the “living radical polymerization method” in which a polymer having a molecular weight almost as designed can be obtained by growing the growing terminal without causing a termination reaction or the like.
- the "chain transfer agent method” can obtain a polymer having a high degree of functionalization, but requires a considerably large amount of a chain transfer agent having a specific functional group with respect to the initiator. There is an economic problem. Further, similar to the above-mentioned “general radical polymerization method”, since it is a free radical polymerization, there is a problem that only a polymer having a wide molecular weight distribution and high viscosity can be obtained. )
- the “living radical polymerization method” has a high polymerization rate and is susceptible to termination reactions such as coupling between radicals. It is difficult to obtain a polymer having a narrow molecular weight distribution (MwZMn is about 1.1 to 1.5), and the molecular weight can be freely controlled by the charging ratio of the monomer and the initiator.
- the ⁇ living radical polymerization method '' can provide a polymer having a narrow molecular weight distribution and a low viscosity, and can introduce a monomer having a specific functional group into almost any position of the polymer. It is more preferable as a method for producing the vinyl polymer having the specific functional group.
- living polymerization refers to polymerization in which the terminal is always active and the molecular chain grows, but in general, it is one in which the terminal is inactivated and one in which the terminal is activated. Pseudo-living polymer that grows in a state of equilibrium is also included. The definition in the present invention is also the latter.
- various groups have been actively studying the “living radical polymerization method”. Examples thereof include cobalt porphyrin complexes such as those shown in Journal of American Chemistry Society (J. Am. Chem. Soc.), 1994, 116, 7943. , Using radical scavengers such as nitroxide compounds as shown in Macromolecules, Vol. 27, p. 7228, 1994, transition using organic halides as initiators "Atom transfer radical polymerization” (ATRP), which uses a metal complex as a catalyst, and the like.
- ATRP Atom transfer radical polymerization
- the "atom transfer radical polymerization method” for polymerizing biel-type monomers using an organic halide or a halogenated sulfonyl compound as an initiator and a transition metal complex as a catalyst is the above-mentioned "living radical” method.
- the vinyl-based polymer with a specific functional group It is more preferable as a method for producing a united product.
- This atom transfer radical polymerization method is described, for example, in Matyjasz ews ki et al., Journal of American Chemical Society (J. Am. Chem. Soc.), 1995, 117, 5614.
- any of these living radical polymerization methods is not particularly limited, but an atom transfer radical polymerization method is preferable.
- the living radical polymerization will be described in detail below, but before that, One of the controlled radical polymerizations that can be used in the production of a vinyl polymer described later, polymerization using a chain transfer agent will be described.
- the radical polymerization using a chain transfer agent is not particularly limited, but examples of a method for obtaining a vinyl polymer having a terminal structure suitable for the present invention include the following two methods.
- JP-A-4-132706 discloses a method for obtaining a halogen-terminated polymer by using a halogenated hydrocarbon as a chain transfer agent, and a method disclosed in JP-A-61-271306. No. 2,594,402 and Japanese Patent Application Laid-Open No. 54-47782, in which a hydroxyl group-containing mercaptan or a hydroxyl group-containing polysulfide is used as a chain transfer agent to obtain a hydroxyl-terminated polymer.
- a radical scavenger such as a nitroxide compound
- stable nitroxy free radical N— ⁇ ⁇
- examples of such compounds include, but are not limited to, cyclic hydroxy groups such as 2,2,6,6-substituted-1-piperidinyloxy radical and 2,2,5,5-substituted-1-pyrrolidinyloxy radical. Nitroxy free radicals from min are preferred.
- an alkyl group having 4 or less carbon atoms such as a methyl group or an ethyl group is suitable.
- nitroxy free radical compounds include, but are not limited to, 2,2,6,6-tetramethyl-1-piperidinyloxy radical (TEM PO), 2,2,6,6-tetraethyl-1-pipe Lydinyloxy radical, 2,2,6,6-tetramethyl-4-oxo-1-1-piveridinyloxyradical, 2,2,5,5-tetramethyl_1-pyrrolidinyloxy radical, 1,1,3 3-tetramethyl-2-isoindolinyloxy radical, N, N-di-tert-butylamino radical and the like.
- Nitroxifuri instead of radicals, galpinoxyl (ga 1 V ino X y 1) freer Stable free radicals such as dicals may be used.
- the radical caving agent is used in combination with a radical generator. It is considered that the reaction product of the radical capping agent and the radical generator serves as a polymerization initiator, and the polymerization of the addition polymerizable monomer proceeds.
- the combination ratio of the two is not particularly limited, but it is appropriate that the radical initiator is 0.1 to 0.1 mol per mol of the radical capping agent.
- the radical generator various compounds can be used, but a peroxide capable of generating a radical under polymerization temperature conditions is preferable.
- the peroxide include, but are not limited to, disilcapoxides such as benzoyl peroxide, lauroyl peroxide, dicumyl peroxide, dialkyl peroxides such as tert-butyl peroxide, disopropyl peroxide carbonate, and bisoxypropyl carbonate. (4-t-butylcyclohexyl) Peroxycapones such as peroxydicaponate and the like, and alkyl esters such as t-butylbutyloxybenzoate and t-butylvinyloxybenzoate. Particularly, benzoyl peroxide is preferred.
- a radical generator such as a radical-generating azo compound such as azobisisobutyronitrile may be used instead of the baroxide.
- an alkoxyamine compound as shown below can be used as an initiator. Absent.
- an alkoxyamine compound When used as an initiator, if it has a functional group such as a hydroxyl group as shown in the above figure, a polymer having a functional group at the terminal can be obtained. When this is used in the method of the present invention, a polymer having a functional group at a terminal can be obtained.
- the polymerization conditions such as a monomer, a solvent, and a polymerization temperature used in the polymerization using the radical scavenger such as the nitroxide compound are not limited, but may be the same as those used for the atom transfer radical polymerization described below.
- the atom transfer radical polymerization of the present invention includes so-called reverse atom transfer radical polymerization.
- Reverse atom transfer radical polymerization refers to a high oxidation state when a normal atom transfer radical polymerization catalyst generates radicals, for example, Cu (II) when Cu (I) is used as a catalyst.
- This is a method in which a common radical initiator such as peroxide is allowed to act, and as a result, an equilibrium state similar to that of atom transfer radical polymerization is created (see Macromolecules 1999, 32, 2872).
- an organic halide particularly an organic halide having a highly reactive carbon-halogen bond (for example, a carbonyl compound having a halogen at the Q! Position or a compound having a halogen at the benzyl position) or a halogen A sulfonyl compound or the like is used as an initiator.
- C 6 H 5 is a phenyl group
- X is chlorine, bromine, or iodine
- R 11 and R 12 are a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group, or an aralkyl group, and X is chlorine, bromine, or iodine.
- R 11 is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group, or an aralkyl group, and X is chlorine, bromine, or iodine.).
- an organic halide or a sulfonyl halide compound having a functional group other than the functional group that initiates the polymerization can also be used.
- a vinyl polymer having a functional group at one main chain terminal and a growing terminal structure of atom transfer radical polymerization at the other main chain terminal is produced.
- a functional group include an alkenyl group, a crosslinkable silyl group, a hydroxyl group, an epoxy group, an amino group, and an amide group.
- the organic halide having an alkenyl group is not limited, and examples thereof include those having a structure represented by general formula (3).
- R 14 R 15 C (X) — R 16 — R 17 — C (R 13 ) CH 2 (3) (Wherein, R 13 is hydrogen or a methyl group, R 14 R 15 is hydrogen, or a monovalent alkyl group having 120 carbon atoms, an aryl group, or an aralkyl group, or those linked to each other at the other end; 16 is one C (0) ⁇ (ester group), — C (0)-(keto group), or o—, m—p—phenylene group, and R 17 is a direct bond or one carbon atom. 20 divalent organic radicals which may contain one or more ether linkages, X being chlorine, bromine or iodine)
- R 14 R 15 examples include hydrogen, methyl group, ethyl group, n-propyl group, isopropyl group, butyl group, pentyl group, hexyl group and the like.
- R 14 and R 15 may be linked at the other end to form a cyclic skeleton.
- organic halide having an alkenyl group represented by the general formula (3) include:
- X is chlorine, bromine, or iodine
- n is an integer of 0 to 20.
- X is chlorine, bromine, or iodine
- n is an integer of 1 to 20
- m is an integer of 0 to 20.
- n _CH CH 2
- n _CH CH 2
- o, m, p - CH 3 C (H) (X) one C 6 H 4 - (CH 2 ) n - CH CH 2, o, m, p - CH 3 CH 2 C (H) (X) - C 6 H 4 - (CH 2)
- n - CH CH 2
- X is chlorine, bromine, or iodine
- n is an integer of 0 to 20
- X is chlorine, bromine, or iodine
- n is an integer of 1 to 20
- m is an integer of 0 to 20.
- X is chlorine, bromine, or iodine
- n is an integer of 0 to 20
- X is chlorine, bromine, or iodine
- n is an integer of 1 to 20
- m is an integer of 0 to 20.
- Examples of the organic halide having an alkenyl group further include a compound represented by the general formula (4).
- H 2 C C (R 13 ) -17 -C (R 14 ) (X)-R 18 — R 15 (4) (where R 13 , R 14 , R 15 , R 17 and X are the same as above) , R 18 represents a direct bond, — C (O) O— (ester group), one C (O) — (keto group), or o—, m—, p—phenylene group)
- R 17 is a direct bond or a divalent organic group having 1 to 20 carbon atoms (which may contain one or more ether bonds). It is a halogenated arylated compound with a vinyl group bonded to the carbon. In this case, since the carbon-halogen bond is activated by the adjacent vinyl group, it is not necessary to have a C (O)) group or a phenylene group as R 18. Good.
- R 18 is preferably a C (O) O group, a C (O) group, or a phenylene group in order to activate a carbon-halogen bond.
- X is chlorine, bromine, or iodine
- R is an alkyl group, aryl group, or aralkyl group having 1 to 20 carbon atoms.
- sulfonyl halide compound having an alkenyl group examples include:
- X is chlorine, bromine, or iodine
- n is an integer of 0 to 20
- the organic halide having a crosslinkable silyl group is not particularly limited, and examples thereof include those having a structure represented by the general formula (5).
- R 19 and R 20 are all alkyl groups having 1 to 20 carbon atoms, aryl groups, aralkyl group, it was or (R ') 3 S i O- (R' an alien a monovalent hydrocarbon group having 1 to 20 carbon atoms and the three R 'groups may be the same, or different shows the Application Benefits organosiloxy group represented by may be), when R 19 or R 2 Q there are two or more, they may be the same or different.
- Y represents a hydroxyl group or a hydrolyzable A) represents a group, and when two or more Y are present, they may be the same or different, a represents 0, 1, 2, or 3, and b represents 0, 1, or 2 indicates m is an integer from 0 to 19, provided that a + mb ⁇ l is satisfied)
- X is chlorine, bromine, iodine, n represents 0 to 20 integer,
- X is chlorine, bromine, iodine
- n is an integer of 1 to 20
- m is an integer of 0 to 20.
- X is chlorine, bromine, or iodine.
- organic halide having a bridging silyl group examples include those having a structure represented by the general formula (6).
- X is chlorine, bromine, or iodine
- R is an alkyl group, aryl group, or aralkyl group having 1 to 20 carbon atoms.
- the organic halide having a hydroxyl group or the halogenated sulfonyl compound is not particularly limited, and examples thereof include the following.
- X is chlorine, bromine, or iodine
- R is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group, an aralkyl group, and n is an integer of 1 to 20.
- the organic halide having an amino group or the sulfonyl halide is not particularly limited, and examples thereof include the following.
- X is chlorine, bromine, or iodine
- R is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group, an aralkyl group, and n is an integer of 1 to 20.
- the organic halide having an epoxy group or the halogenated sulfonyl compound is not particularly limited, and examples thereof include the following.
- X is chlorine, bromine, or iodine
- R is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group, an aralkyl group, and n is an integer of 1 to 20.
- X is chlorine, bromine, or iodine
- R is a hydrogen atom or an alkyl, aryl, or aralkyl group having 20 carbon atoms
- n is an integer of 1 to 20
- X is chlorine, bromine, or iodine
- n is an integer of 1 to 20.
- the transition metal complex used as the polymerization catalyst is not particularly limited, but is preferably a metal complex complex having an element of Group 7, 8, 9, 10 or 11 of the periodic table as a central metal. It is. More preferred are complexes of zero-valent copper, monovalent copper, divalent ruthenium, divalent iron and divalent nickel. Of these, copper complexes are preferred. Specific examples of monovalent copper compounds include cuprous chloride, cuprous bromide, cuprous iodide, cuprous cyanide, cuprous oxide, cuprous perchlorate, and the like. is there. When a copper compound is used, 2,2'-biviridyl and its derivatives, 1,10-phenanthroline and its derivatives are added to enhance the catalytic activity.
- a ligand such as a polyamine such as hexamethyltris (2-aminoethyl) amine is added.
- divalent tris triphenyl phosphinite down complex of ruthenium chloride (Ru C l 2 (PP h 3) 3) it is also preferable as a catalyst.
- ruthenium compound is used as a catalyst, aluminum alkoxides are added as an activator.
- divalent bis triphenyl phosphine complex of iron F e C 1 2 (PP h 3) 2)
- 2 -valent bis triphenyl phosphine complex of nickel N i C 1 2 (PP h 3) 2)
- divalent piston-butyl phosphine complexes of nickel N i B r 2 (PB u 3) 2
- the polymerization can be carried out without solvent or in various solvents.
- solvent examples include hydrocarbon solvents such as benzene and toluene, ether solvents such as dimethyl ether and tetrahydrofuran, halogenated hydrocarbon solvents such as methylene chloride and chloroform, acetone, and methylethyl.
- Ketone solvents such as ketones and methyl isobutyl ketone; alcohol solvents such as methanol, ethanol, propanol, isopropanol, n-butyl alcohol and tert-butyl alcohol; nitriles such as acetonitrile, propionitrile and benzonitrile Solvent, ester solvents such as ethyl acetate and butyl acetate, ethylene carbonate And carbonate-based solvents such as propylene carbonate, etc., and can be used alone or in combination of two or more.
- the polymerization can be carried out in the range of 0 ° C. to 200 ° C., preferably 50 to 150 ° C.
- a method for synthesizing a Bier polymer having at least one crosslinkable silyl group includes: (A) a hydrosilane compound having a crosslinkable silyl group in a Bier polymer having at least one alkenyl group in the presence of a hydrosilylation catalyst.
- (B) a method of reacting a compound having a group capable of reacting with a hydroxyl group such as a crosslinkable silyl group and an isocyanate group in one molecule with a vinyl polymer having at least one hydroxyl group
- D) When synthesizing a Bier polymer by radical polymerization
- a method using a chain transfer agent having a crosslinkable silyl group (E) a method in which a piper polymer having at least one highly reactive carbon-halogen bond is used.
- the pinyl polymer having at least one alkenyl group used in the method (A) can be obtained by various methods.
- the synthesis methods are exemplified below, but are not limited thereto.
- A-a When a vinyl polymer is synthesized by radical polymerization, for example, a polymerizable alkenyl group and a polymerizable alkenyl group in one molecule as shown in the following general formula (7) are used. A method in which a compound having an alkenyl group having low compatibility is reacted as a second monomer.
- R 24 represents hydrogen or a methyl group
- R 25 represents —C (O) 0_, or o—, m—, p-phenylene group
- R 26 represents a direct bond or carbon number.
- R 27 is hydrogen or an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms Group or aralkyl group having 7 to 20 carbon atoms
- (A-b) When synthesizing a vinyl polymer by atom transfer radical polymerization, at the end of the polymerization reaction or after completion of the reaction of a predetermined monomer, for example, 1,5-hexadiene, 1,7-hexadiene, 1, A method in which a compound having at least two alkenyl groups having low polymerizability such as 9-decadiene is reacted.
- an organic tin such as aryltributyltin or aryltrioctyltin.
- R 27 is the same as above, R 28 and R 29 are both electron withdrawing groups for stabilizing carbanion C—, or one is the above electron withdrawing group and the other is hydrogen or It represents an alkyl group having 1 to 10 carbon atoms or a phenyl group.
- R 3 G represents a direct bond or a divalent organic group having 1 to 10 carbon atoms, and may contain one or more ether bonds.
- M + represents an alkali metal ion or a quaternary ammonium
- R 28 and R 29 those having the structure of 1 C ⁇ 2 R, —C (0) R and 1 CN are particularly preferred.
- (A-e) By reacting a vinyl polymer having at least one highly reactive carbon-halogen bond at the end produced by atom transfer radical polymerization with a simple metal such as zinc or an organometallic compound An enolate anion is prepared, followed by an alkenyl group-containing compound having a leaving group such as a halogen acetyl group, a alkenyl group-containing carbonyl compound, an alkenyl group-containing isocyanate compound, and an alkenyl group-containing acid halide. A method of reacting with an electrophilic compound having an alkenyl group.
- H 2 C C (R 27 ) _R 31 _ ⁇ - M + (9)
- R 21 is a divalent organic group having 1 to 20 carbon atoms and may contain one or more ether bonds.
- H 2 C C (R 27 ) one R 32 — C ( ⁇ ) O- M + (10)
- R 22 may be a direct bond or a divalent organic group having 1 to 20 carbon atoms and may contain one or more ether bonds.
- the vinyl polymer having at least one alkenyl group can also be obtained from a vinyl polymer having at least one hydroxyl group.
- the present invention is not limited thereto.
- (A-h) A method of reacting an alkenyl group-containing isocyanate compound such as aryl isocyanate.
- the method (Ab) is more preferable because the control is easier.
- the alkenyl group-containing vinyl polymer produced by the above-described method can be converted into a crosslinkable silyl group by reacting with a crosslinkable silyl group-containing hydrosilane compound.
- the hydrosilane compound having a crosslinkable silyl group is not particularly limited, but a typical example is a compound represented by the general formula (11).
- R 9 and R 1 Q are each an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or (R ′) 3 S i O- (R 'is a monovalent hydrocarbon group having 1 to 20 carbon atoms, and three R's may be the same or different).
- Y represents a hydroxyl group or a hydrolyzable group, and when two or more Ys are present, they may be the same or different.
- a indicates 0, 1, 2, or 3
- b indicates 0, 1, or 2.
- m is 0 It is an integer of ⁇ 19. However, it satisfies that a + mb ⁇ 1. ⁇
- a transition metal catalyst When the above-mentioned hydrosilane compound having a crosslinkable silyl group is added to an alkenyl group, a transition metal catalyst is usually used.
- the transition metal catalyst include, for example, platinum alone, a dispersion of platinum solids in a carrier such as alumina, silica, or carbon black; chloroplatinic acid; a complex of chloroplatinic acid with an alcohol, aldehyde, ketone, or the like; platinum.
- One-year-old refine complex platinum (0) -dibirate tetramethyldisiloxane complex.
- Examples of the catalyst other than platinum compounds R h C 1 (PP h 3) 3 - Rh C l 3, Ru C l 3, I r C l 3, F e C l 3, A 1 C 1 3, P d C 1 2 ⁇ H 2 0 , N i C 1 2, T i C 1 4 , and the like.
- the method for producing a biel-based polymer having one is exemplified by the following methods, but is not limited to these methods.
- H 2 C C (R 24 ) R 25 -R 26 — ⁇ H (1 3)
- a vinyl polymer having at least one highly reactive carbon-halogen bond at the terminal produced by atom transfer radical polymerization has a stable hydroxyl group as listed in the general formula (14).
- R 28 and R 29 those having the structure of —CO 2 R, —C (O) R and —CN are particularly preferred.
- the compound represented by the general formula (18) is not particularly limited, but is preferably an alkenyl alcohol such as 10-indesenol, 5-hexenol, or allylic alcohol because it is easily available.
- (B-b) is more easily controlled among the production methods of (B-a), (B-b), (B-g) to (B-e) and (B-j).
- the method ' is more preferred.
- Examples of a compound having a group capable of reacting with a hydroxyl group such as a crosslinkable silyl group and an isocyanate group in one molecule include, for example, bis-isocyanatopropyltrimethoxysilane, and isocyanatopropylmethyldimethoxysilane. And isocyanatopropyltriethoxysilane. If necessary, a generally known catalyst for a urethanization reaction can be used.
- Examples of the compound having a polymerizable alkenyl group and a crosslinkable silyl group in one molecule used in the method (C) include, for example, trimethoxysilylpropyl (meth) acrylate, methyldimethoxysilylpropyl (meth) acrylate, and the like. And those represented by the following general formula (18).
- H 2 C C (R 24 ) — R 25 — R 33- [S i (R 9 ) 2 — b (Y) b O] m — S i
- R 33 is a direct bond or a divalent organic group having 1 to 20 carbon atoms. The above ether bond may be included.
- timing of reacting a compound having both a polymerizable alkenyl group and a crosslinkable silyl group in one molecule is not particular limitation.
- Examples of the chain transfer agent having a crosslinkable silyl group used in the chain transfer agent method (D) include, for example, mercaptan having a crosslinkable silyl group and crosslinkable as shown in JP-B-3-14068 and JP-B-4155454. And hydrosilane having a reactive silyl group.
- the method for synthesizing the vinyl polymer having at least one highly reactive carbon-halogen bond which is used in the method (E), is produced by an atom transfer radical polymerization method.
- Compounds having both a crosslinkable silyl group and a stabilized carbanion in one molecule include those represented by the general formula (19).
- R 34 is a direct bond or a divalent organic group having 1 to 10 carbon atoms.
- R 35 may be hydrogen, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, or an aralkyl group having 7 to 10 carbon atoms. Shown.
- the electron withdrawing group of R 28, R 29, - C0 2 R, -C ( ⁇ ) R and - having the structure of CN is particularly preferable.
- the present invention is a curable composition containing the above-mentioned vinyl polymer having a crosslinkable silyl group.
- the curable composition of the present invention may be prepared as a one-component type in which all the components are pre-mixed, sealed and stored, and then cured by the moisture in the air after the application, or may be separately prepared as a curing agent and filled with a curing catalyst. Ingredients such as materials, plasticizers, and water may be blended, and the blended material and the polymer composition may be mixed before use to prepare a two-component type.
- the reduction in storage stability which is a problem to be solved by the present invention, often occurs in a one-component type in which the catalyst and the silane coupling agent are mixed and then stored. Is preferably a one-component type.
- a curing catalyst and a silane coupling agent are generally often added.
- the storage stability which is a problem to be solved by the present invention, often occurs when these curing catalysts and silane coupling agents are blended.
- Various compounding agents may be added depending on the desired physical properties.
- the polymer having a crosslinkable silyl group is crosslinked and cured by forming a siloxane bond in the presence or absence of various conventionally known condensation catalysts.
- a wide range from rubbery to resinous can be prepared according to the molecular weight of the polymer and the main chain skeleton.
- condensation catalyst examples include dibutyltin dilaurate, dibutyltin diacetate, dibutyltin getyl hexanolate, dibutyltin dioctate, dibutyltin dimethylmalate, dibutyltin getylmalate, dibutyltin dibutylmalerate, and dibutyltin.
- a tetravalent tin compound is often used due to its curability, and the problem of storage stability, which is a problem to be solved by the present invention, is that when the tetravalent tin compound is blended, In order to obtain a greater effect of the present invention, a tetravalent tin compound is preferable.
- the amount of the condensation catalyst is preferably about 0.1 to 20 parts with respect to 100 parts (parts by weight, hereinafter the same) of a vinyl polymer having at least one crosslinkable silyl group, and 1 to 1 part. 0 parts is more preferred. If the amount of the silanol condensation catalyst is less than this range, the curing rate may be slow, and the curing reaction may not proceed sufficiently. On the other hand, if the amount of the silanol condensation catalyst exceeds this range, In addition, local heat generation and foaming occur, making it difficult to obtain a good cured product, and also shortening the pot life, which is not preferable from the viewpoint of workability. Although not particularly limited, it is preferable to use a tin-based curing catalyst to control the curability. "Component (III): Amine compound"
- a component (III) 7-min compound As the amine compound, aminosilanes described in the section of “silane coupling agent” below are preferable, and an aminosilane having a primary amino group is particularly preferable.
- the decrease in storage stability which is a problem to be solved by the present invention, is often derived when an amine compound is added, particularly when a primary amine compound is added.
- a blend to which these are added is used.
- silane coupling agent or an adhesion-imparting agent other than the silane coupling agent can be added.
- the silane coupling agent include, but are not limited to, isocyanate propyl trimethoxy silane, diisocyanate propyl triethoxy silane, diisocyanate propyl methyl ethyl ethoxy silane, and r isocyanate propyl methyl dimethoxy silane.
- Isocyanate group-containing silanes ⁇ -aminopropyltrimethoxysilane, aminopropyltriethoxysilane, aminopropylmethyldimethoxysilane, aminopropylmethyljetoxysilane, and ) Aminopropyl trimethoxysilane, ⁇ - (2-aminoethyl) aminopropylmethyldimethoxysilane, r- (2-aminoethyl) aminopropyltriethoxysilane, r- (2-aminoethyl) aminopropylmethyl Jetoxysila N-phenyl-aminoaminopropyltrimethoxysilane, N-benzylaminoaminopropyltrimethoxysilane, N-vinylbenzylaminopropyl pyrtriethoxysilane, etc.
- Amino-containing silanes amercaptopro Mercapto group-containing silanes such as virtrimethoxysilane, ⁇ -mercaptopropyltriethoxysilane, ⁇ -mercaptopropylmethyldimethoxysilane, amercaptopropylmethyljetoxysilane, etc .; -Glycidoxypropyltriethoxysilane, aglycidoxypropylmethyldimethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, ⁇ _ (3,4-epoxycyclohexyl) Epoxy group-containing silanes such as tyltriethoxysilane; i3 One-strand lipoxyshethyltriethoxysilane,] 3-carboxyshenylphenylbis (2-methoxyethoxy) silane, N— / 3- (thropropoxymethyl ) Power of aminoeth
- silylated amino polymers can also be used as the silane coupling agent.
- unsaturated aminosilane complexes phenylamino long-chain alkylsilanes, aminosilylated silicones, silylated polyesters, etc., which are modified derivatives thereof, can also be used as the silane coupling agent.
- aminosilanes are generally preferred, and aminosilanes having a primary amino group are particularly preferred.
- the decrease in storage stability which is a problem to be solved by the present invention, often occurs when aminosilanes are added, particularly when aminosilanes having a primary amino group are added.
- a blend containing these is preferable.
- the silane coupling agent used in the present invention is usually used in an amount of 0.1 to 20 parts based on 100 parts of the crosslinkable silyl group-containing vinyl polymer. In particular, it is preferably used in the range of 0.5 to 10 parts.
- the effect of the silane coupling agent used is that various types of adherends can be used, such as inorganic substrates such as glass, aluminum, stainless steel, zinc, copper, and mortar, as well as PVC, acrylic, polyester, polyethylene, polypropylene, and poly When used for an organic substrate such as one-point, it shows a remarkable effect of improving adhesiveness under non-primer conditions or primer-one processing conditions. When used under non-primer conditions, the effect of improving the adhesion to various adherends is particularly significant.
- silane coupling agent examples include, for example, epoxy resins, phenol resins, sulfur, alkyl titanates, aromatic polyisocyanates, and the like.
- the adhesion imparting agent such as a silane coupling agent may be used alone or in combination of two or more.
- the addition of these adhesiveness-imparting agents can improve the adhesion to the adherend.
- 0.1 to 20 parts by weight of a silane coupling agent is used among the above-mentioned adhesiveness imparting agents in order to improve the adhesiveness, particularly the adhesiveness to a metal-coated surface such as an oil pan. It is preferred to use
- plasticizers are used as needed in the curable composition of the present invention.
- the plasticizer is not particularly limited.
- dibutyl phthalate, diheptyl phthalate, di (2-ethylhexyl) phthalate, butyl benzyl phthalate, etc. may be used for the purpose of adjusting physical properties and adjusting properties.
- Non-aromatic dibasic acid esters such as dioctyl adipate, dioctyl sebacate, dibutyl sebacate, and isodecyl succinate; aliphatic esters such as butyl oleate and methyl acetyl disilinolate; Esters of polyalkylene glycols such as recall dibenzoate, triethylene glycol dibenzoate, and erythritol ester; phosphate esters such as tricresyl phosphate and tributyl phosphate; trimellitate ester And polystyrene and poly Polystyrenes such as ⁇ - methylstyrene; Polybutadiene, polybutene, polyisobutylene, butadiene-acrylonitrile, polychloroprene; hydrocarbon oils such as chlorinated paraffins; alkyl diphenyls, partially hydrogenated yuichi phenyl, etc .; process oils
- the amount of the plasticizer used is not limited, but is 5 to 150 parts by weight, preferably 10 to 120 parts by weight, more preferably 20 to 100 parts by weight, based on 100 parts by weight of the Bier polymer. ⁇ 100 parts by weight. Is less than 5 parts by weight no longer expressed effect as a plasticizer, c "filler" the mechanical strength is insufficient of the cured product exceeds 1 5 0 parts by weight
- the filler is not particularly limited, but may be wood flour, pulp, cotton chips, asbestos, glass fiber, carbon fiber, my strength, walnut shell powder, rice husk powder, graphite, diatomaceous earth, clay, fumed silica, Reinforcing fillers such as sedimentable silica, crystalline silica, fused silica, dolomite, silicic anhydride, hydrous silicic acid, carbon black; heavy calcium carbonate, colloidal calcium carbonate, magnesium carbonate, diatomaceous earth, calcined clay , Clay, talc, titanium oxide, bentonite, with tonite, ferric oxide, aluminum fine powder, flint powder, suboxide Fillers such as lead, activated zinc, zinc dust and shirasu balloon; fibrous fillers such as asbestos, glass fibers and filaments.
- the filler is not particularly limited, but may be wood flour, pulp, cotton chips, asbestos, glass fiber, carbon fiber, my strength, walnut shell powder, rice husk powder, graphite, diatom
- sedimentable silica, fumed silica, crystalline silica, fused silica, dolomite, carbon black, calcium carbonate, titanium oxide, and silver are preferred.
- fumed silica, sedimentable silica, caustic anhydride, hydrated caustic acid, carbon black, surface-treated fine calcium carbonate, and crystalline silica fused silica, calcined clay, and t may be added a filler selected from such clay and active zinc white, when it is desired to obtain a cured product elongation is greater at low intensity, mainly of titanium oxide, calcium carbonate, talc
- a filler selected from iron oxide, ferric oxide, zinc oxide and shirasu balloon can be added.
- the effect of improving the breaking strength, breaking elongation, adhesion and weather resistance of the cured product may not be sufficient.
- the greater the specific surface area the greater the effect of improving the breaking strength, breaking elongation, adhesion and weather resistance of the cured product.
- calcium carbonate has been subjected to surface treatment using a surface treatment agent.
- the surface-treated calcium carbonate is used, the workability of the composition of the present invention is improved as compared with the case where calcium carbonate without the surface treatment is used, and the adhesiveness and weather resistance of the curable composition are improved. It is thought that the improvement effect of the above is improved.
- organic substances such as fatty acids, fatty acid stones and fatty acid esters and various surfactants, and various coupling agents such as silane coupling agents and titanate coupling agents are used.
- specific examples include, but are not limited to, caproic acid, caprylic acid, pelargonic acid, capric acid, pendecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, etc. And their salts such as sodium and potassium, and alkyl esters of these fatty acids.
- the surfactant include polyoxyethylene alkyl ether sulfates and long-chain alcohol sulfates, and sodium salts and potassium salts thereof.
- Sulfate ester type anionic surfactants and alkyl benzene sulfonic acid, alkyl naphthalene sulfonic acid, paraffin sulfonic acid, ⁇ -olefin sulfonic acid, alkyl sulfo octanoic acid, etc., and sulfonic acids such as sodium salts and potassium salts thereof Type anionic surfactants and the like.
- the amount of the surface treatment agent to be treated is preferably 0.1 to 20% by weight, more preferably 1 to 5% by weight, based on calcium carbonate. If the treatment amount is less than 0.1% by weight, the effect of improving workability, adhesion and weather resistance may not be sufficient, and if it exceeds 20% by weight, the storage stability of the curable composition may be insufficient. May be reduced.
- the amount of the filler is preferably in the range of 5 to 100 parts by weight based on 100 parts by weight of the Bier polymer, and is preferably 20 to 500 parts by weight. More preferably, it is used in the range of 40 to 300 parts by weight. If the amount is less than 5 parts by weight, the effect of improving the breaking strength, elongation at break, adhesion and weather resistance of the cured product may not be sufficient. Workability of the object may decrease.
- the filler may be used alone or in combination of two or more.
- the curable composition of the present invention may optionally contain a physical property adjuster for adjusting the tensile properties of the resulting cured product.
- the physical property modifier is not particularly limited. Examples thereof include alkylalkoxysilanes such as methyltrimethoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, and ⁇ -propyltrimethoxysilane; dimethyldiisopropyloxysilane, and methyltriisopropylsilane.
- Alkyl isoproponoxysilanes such as benzoxysilane, ⁇ -glycidoxypropylmethyldiisoproponoxysilane, aglycidoxypropylmethyl dimethoxysilane, aglycidoxypropyltrimethoxysilane, vinyl trimethoxysilane, vinyldimethyl Methoxysilane, aminopropyl trimethoxysilane, ⁇ _—aminoethyl) aminopropylmethyldim Alkoxysilanes having a functional group such as toxic silane, thiomercaptopropyl trimethoxysilane, and r-mercaptopropylmethyldimethoxysilane; silicone varnishes; and polysiloxanes.
- the physical property modifier may be used alone,
- Two or more kinds may be used in combination.
- R 4 G 9 and R 41 are each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms. Further, a is any one of 0, 1, 2, and 3. A silicon compound having no silanol group represented by) may be added.
- Examples of the silicon compound include, but are not limited to, phenyltrimethoxysilane, phenylmethyldimethoxysilane, phenyldimethylmethoxysilane, diphenyldimethoxysilane, diphenylethoxysilane, triphenylmethoxysilane and the like. It is preferable that R 4 Q in the general formula (20) is an aryl group having 6 to 20 carbon atoms because the effect of accelerating the curing reaction of the composition is large. In particular, diphenyldimethoxysilane / diphenylethoxysilane is the most preferable because of its low cost and easy availability.
- the amount of the silicon compound is preferably about 0.01 to 20 parts, more preferably 0.1 to 10 parts, per 100 parts of the vinyl polymer having at least one crosslinkable silyl group. . If the amount of the silicon compound falls below this range, the effect of accelerating the curing reaction may be reduced. On the other hand, if the amount of the silicon compound exceeds this range, the hardness and tensile strength of the cured product may decrease.
- the curable composition of the present invention prevents sagging as necessary and improves workability.
- a thixotropic agent anti-sagging agent
- the anti-sagging agent is not particularly restricted but includes, for example, polyamide waxes, hydrogenated castor oil derivatives; and metal stones such as calcium stearate, aluminum stearate and barium stearate. These thixotropic agents (anti-sagging agents) may be used alone or in combination of two or more.
- additives may be added to the curable composition of the present invention, if necessary, for the purpose of adjusting various physical properties of the curable composition or the cured product.
- additives include, for example, flame retardants, curability regulators, antioxidants, radical inhibitors, ultraviolet absorbers, metal deactivators, ozone degradation inhibitors, light stabilizers, phosphorus-based additives Oxide decomposers, lubricants, pigments, foaming agents, photocurable resins, and the like. These various additives may be used alone or in combination of two or more.
- curable polymers may be blended with the curable composition of the present invention.
- the curing mechanism of the curable polymer to be blended may be a curing mechanism different from condensation-type curing due to the crosslinkable silyl group of the polymer of the component (I) of the present invention, such as epoxy curing, urethane curing, hydrosilylation curing, and radical curing. It does not matter, but preferably, it is also of the condensation type.
- the curable polymer includes, but is not limited to, silicone type, polyisobutylene type, urethane type, polyether type, etc., but polyether type is preferable due to compatibility with the polymer of component (I) of the present invention and physical properties. preferable.
- the polyether polymer having at least one crosslinkable silyl group may or may not contain a urethane bond or a urea bond in the main chain.
- the main chain of the polyether polymer is not particularly limited, and examples thereof include polyethylene oxide, polypropylene oxide, polybutylene oxide, and polyphenylene oxide. Among these, it is preferable that the polymer is essentially a polyoxyalkylene, and more preferable that the polymer is essentially a polypropylene oxide. In addition to propylene oxide, it is preferable to use ethylene oxide, butylene oxide, phenylene oxide, and the like. May be included.
- the main chain is essentially polypropylene oxide
- the propylene oxide unit is at least 50%, preferably at least 70%, more preferably at least 70% of the repeating units constituting the main chain. Occupies 90% or more. If the viscosity is lower, the handleability becomes better, so that the polypropylene oxide polymer having a molecular weight distribution (MwZMn) of 1.5 or less is more preferable.
- the crosslinkable functional group is not particularly limited, and preferable examples thereof include a crosslinkable silyl group, an alkenyl group, a hydroxyl group, an amino group, a group having a polymerizable carbon-carbon double bond, and an epoxy group. Particularly, a crosslinkable silyl group is preferable.
- crosslinkable silyl group there are various structures of the crosslinkable silyl group, and they may have the same structure as the polymer of the component (I) of the present invention or may have a different structure.
- the number of crosslinkable functional groups in the polyester-based polymer is at least one on average, but it is preferably more than one, more preferably from the viewpoint of curability of the composition. It is 1.1 to 4.0, more preferably 1.5 to 2.5 on average.
- the crosslinkable functional group is preferably located at the terminal of the polyether polymer from the viewpoint of rubber elasticity of the cured product. More preferably, functional groups are present at both ends of the polymer.
- the method for producing the polyether polymer is not particularly limited, and may be a conventionally known method.
- the polyester polymer having at least one crosslinkable functional group as the component (I) in the present invention contains a urethane bond or a urea bond in the main chain, it is regarded as a polyether polymer.
- An organic polymer containing at least one urethane bond or urea bond in the molecule and having at least one crosslinkable functional group may be obtained by any production method.
- the crosslinkable functional group is not particularly limited, and includes various functional groups as described above. Among them, the general formula (21)
- R 51 is an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or R ′ 3 Sio— Is a monovalent hydrocarbon group of the formulas 1 to 20, and three R's may be the same or different.
- A indicates 0, 1, 2, or 3.
- R 52 is a substituted or unsubstituted divalent organic group having 1 to 20 carbon atoms
- W is a hydroxyl group, a carbonyl group, a mercapto group and an amino group.
- Active hydrogen-containing group selected from (primary or secondary).
- a compound produced by reacting a hydrolyzable silicon group-containing isocyanate compound (H) represented by the formula (1) can be used.
- oxyalkylene polymer (D) those produced by any production method can be used, but those having at least 0.7 hydroxyl groups at the terminal per molecular terminal on the whole molecular average can be used. Is preferred. Specifically, such as an oxyalkylene polymer produced using a conventional alkali metal catalyst, and a polyhydroxy compound having at least two hydroxyl groups in the presence of a complex metal cyanide complex (C) and cesium.
- the initiator includes an oxyalkylene polymer produced by reacting an alkylene oxide.
- the use of the double metal cyanide complex (C) has a lower unsaturation, a higher molecular weight, and a higher MwZMn than the oxyalkylene polymer produced using the conventional alkali metal catalyst. It is preferable because it is possible to obtain an oxyalkylene polymer (D) having a small viscosity, a low viscosity, a high acid resistance and a high weather resistance.
- the double metal cyanide complex (C) a complex mainly composed of zinc hexocyanobaltate is preferable, and an ether and / or alcohol complex thereof is preferable.
- Its composition can be essentially that described in JP-B-46-27250.
- the ether glymes such as tetrahydrofuran, glyme, and diglyme are preferable. Among them, tetrahydrofuran and glyme are preferable, because an oxyalkylene polymer (D) having a narrower Mw / Mn and a lower unsaturation degree can be obtained.
- the alcohol t-butanol described in JP-A-4-114523 is preferable because an oxyalkylene polymer (D) having a low degree of unsaturation can be obtained.
- the number of hydroxyl groups in the oxyalkylene polymer (D) is determined by the number of polyisocyanate compounds.
- the oxyalkylene polymer (D) having 2 or more hydroxyl groups can be produced by substituting a part or all of the bifunctional initiator with a trifunctional or higher initiator.
- an oxyalkylene polymer having 1.8 to 3 hydroxyl groups per molecule on the average of all molecules ( D) is also possible.
- Specific examples include a polyoxyethylene compound, a polyoxypropylene compound, a polyoxybutylene compound, a polyoxyhexylene compound, a polyoxytetramethylene compound, and a copolymer thereof.
- Particularly preferred oxyalkylene polymers (D) are polyoxypropylenediol, polyoxypropylenetriol, polyoxypropylenetetraol, and copolymers of these polymers with ethylene oxide. It is a mixture.
- ethylene oxide is copolymerized so that the terminal hydroxyl group becomes primary.
- the number average molecular weight of the oxyalkylene polymer (D) it is possible to use one having a number average molecular weight of 100 or more.
- any of the polyisocyanate compounds (E) used for obtaining the polyurethane-based main chain (F) may be any of the polyisocyanate compounds. Can be used.
- the number of isocyanate groups contained in the polyisocyanate compound (E) is preferably 2 to 5 on average per molecule, and more preferably 2 to 3 in terms of availability. Further, 2 is most preferable because gelling does not occur during the reaction with the oxyalkylene polymer (D).
- TD I tolylene diisocyanate
- MD I methylene di isocyanate
- XD I xylylene diisocyanate
- I PD I isophorone diisocyanate
- HMD I isocyanate
- TMD I tetramethylene diisocyanate
- these uretdione derivatives, isocyanurate derivatives, cyanurate derivatives, and carbodiimide derivatives can also be used.
- silicon compound (G) represented by the formula (22) used to introduce the silicon-containing group represented by the formula (21) into the molecule of the polyether polymer include r -Aminopropyl trimethoxysilane, T-aminopropyl triethoxysilane, aminopropylmethyldimethoxysilane, N- (jS-aminoethyl) aminopropyltrimethoxysilane, N- (monoaminoethyl) Amino-substituted alkoxysilanes such as ⁇ -aminopropyltriethoxysilane, N- ( ⁇ -aminoethyl) _aminopropylmethyldimethoxysilane, 1,3-diaminoisopropyltrimethoxysilane, and hydroxy Propyltrimethoxysilane, e-mercaptopropyltrimethoxysilane and the like.
- gayne group-containing isocyanate compound ( ⁇ ) represented by the formula (23) used to introduce the silicon-containing group represented by the formula (21) into the molecule of the polyether polymer examples thereof include arterimethoxysilylpropyl isocyanate, arteriethoxysilylpropyl isocyanate, methyldimethoxysilylpropyl isocyanate, r-propyl isocyanate and the like.
- a catalyst can be used for the reaction between the hydroxyl group and the isocyanate group of the oxyalkylene polymer (D), and the W group and the isocyanate group of the silicon compound, but the storage stability of the resulting polyether polymer deteriorates. In such a case, the reaction is preferably performed in the absence of a catalyst. When a catalyst is used, a known catalyst may be used as long as it catalyzes the reaction between the hydroxyl group and the isocyanate group.
- the polyester-based polymer having a urethane bond or a urea bond in the main chain has a number average molecular weight of 7500 or more.
- a number average molecular weight of 7500 or more are preferred.
- the number average molecular weight is particularly preferably from 8,000 to 20,000 from the viewpoint of viscosity.
- the mixing ratio of the vinyl polymer and the polyether polymer as the component (I) is preferably in the range of 100Z1 to 1/100 by weight, more preferably in the range of 100Z5 to 5Z100, and more preferably 100/10 to 10Z100. More preferably, it is within the range. If the blend ratio of the vinyl polymer (I) is low, excellent weather resistance may not be easily exhibited.
- the curing rate after storage for a long time is significantly changed from that before storage.
- a sealing material there is work to adjust the surface shape after coating the joints and apply a finishing material and paint, so that the surface hardens, so-called skinning time Changes become obstacles to work.
- the storage conditions for confirming the effects of the present invention are not particularly limited. However, in general, changes during storage are unlikely to occur at low temperatures, and considerably high during storage in summer. In some cases, the temperature is preferably in the range of room temperature to about 80 ° C. for quick evaluation. In the embodiment of the present invention, the evaluation is performed at 50 ° C.
- a second aspect of the present invention is a sealing material, a liquid gasket, and an adhesive using the curable composition of the first aspect.
- the first curable composition of the present invention has improved storage stability and is suitably used for sealing materials, liquid gaskets, and adhesives.
- curable composition of the present invention uses are not limited, and electric and electronic parts (heavy electric parts, light electric parts, electric-electronic device circuits and Board sealing materials (refrigerators, freezers, washing machines, gas meters, microwave ovens, steam irons or sealing materials for earth leakage breakers), potting materials (transformer high-voltage circuits, printed circuit boards, high-voltage transformers with variable resistance parts) , Electrically insulating parts, semiconductive parts, conductive parts, potting of solar cells or flyback transformers for televisions, coating materials (thick film resistors for high voltage or circuit elements of hybrid ICs; HIC; electrical insulating parts; semiconductive) Components; Conductive components; Modules; Printed circuits; Ceramic substrates; Diodes, transistors or bonding wires One buffer material; semiconductive element; or optical fiber coating for optical communication) or adhesive (adhesion of CRT edge, neck, electrically insulating part, semiconductive part
- a third aspect of the present invention is that the main chain is a vinyl polymer having at least one crosslinkable functional group at a terminal, and 2 to 80% by weight of the monomers constituting the main chain.
- a polymer characterized in that the monomer is methyl acrylate.
- 5 to 50% by weight of the monomers constituting the main chain is methyl acrylate, and more preferably, 5 to 20% by weight of the monomers constituting the main chain. Is methyl acrylate.
- Another embodiment of the present invention provides a method for manufacturing a device, comprising: 0356
- the Bier polymer in the main chain of the above-mentioned polymer is a (meth) acrylic polymer.
- the method for polymerizing these polymers is not limited, but is preferably one according to the description in the first aspect of the present invention.
- These polymers are suitable for use as the component (I) of the first curable composition of the present invention, and further have the effect of improving the mechanical properties of the cured product, such as the strength.
- the crosslinkable functional group of the present invention is preferably an alkenyl group, a (meth) acryloyl group, or a hydroxyl group together with a crosslinkable silyl group similar to the component (I) of the first curable composition of the present invention. .
- the method for introducing these functional groups is not limited, but follows the description in the first aspect of the present invention.
- Examples of a method for introducing a (meth) acryloyl group include a method described in WO996963.
- the fourth aspect of the present invention is a curable composition containing the polymer of the third aspect as an essential component.
- the curable composition containing a polymer having an alkenyl group at the terminal as an essential component is described below.
- the polymer When a Bier polymer having an alkenyl group at the terminal of an alkenyl group is used as the curable composition, the polymer may be used alone or in combination with a curing agent. ) And a curable composition containing a hydrosilyl group-containing compound (component (B)).
- the hydrosilyl group-containing compound as the component (B) is not particularly limited, and various compounds can be used. That is, a linear polysiloxane represented by the general formula 24 or 25
- R 6 Q and R 61 are an alkyl group having 1 to 6 carbon atoms or a phenyl group, a length 62 is an alkyl group or an aralkyl group having 1 to 10 carbon atoms, and a is 0 a ⁇ l 0
- b is an integer of 2 ⁇ b ⁇ 100
- c is an integer of 0 ⁇ c ⁇ 100
- R 63 and R 64 are an alkyl group having 1 to 6 carbon atoms or a phenyl group
- R 65 is an alkyl group or an aralkyl group having 1 to 10 carbon atoms
- d is 0 ⁇ d ⁇ 8, and e is 2 ⁇ e ⁇ 10
- f is an integer of 0 ⁇ f ⁇ 8, and 3 ⁇ d + e + f ⁇ l0
- siloxanes from the viewpoint of compatibility with the (meth) acrylic polymer, chain siloxanes having a phenyl group represented by the general formulas 27 and 28 and cyclic siloxanes represented by the general formulas 29 and 30 Is preferred.
- R 66 is hydrogen or a methyl group, g is an integer of 2 ⁇ g ⁇ 100, h is an integer of 0 ⁇ h ⁇ l00, and C 6 H 5 is a phenyl group)
- R 66 is hydrogen or a methyl group, i is 2 ⁇ i ⁇ 1 0, j is 0 ⁇ J ⁇ 8 and 3 ⁇ i + j ⁇ 1 0 is an integer, C 6 H 5 is phenyl group
- a low molecular weight compound having two or more alkenyl groups in the molecule is further reacted with a compound having a silyl group having a hydridyl group represented by the general formulas 22 to 28. It is also possible to use a compound obtained by carrying out an addition reaction so that a part of the silyl group at the opening remains afterwards.
- Various compounds can be used as the compound having two or more alkenyl groups in the molecule.
- hydrocarbons such as 1,4-pentene, 1,5-hexadiene, 1,6_butadiene, 1,7-octane, 1,8-nonadiene, and 1,9-decadiene
- ether compounds such as O, 0, —diarylbisphenol A, 3,3′-diarylbisphenol A, diaryl phthalate, diaryl isophthalate, triallyl trimellitate, tetraaryl Ester compounds such as rupiromelitite; and diponyl compounds such as diethylene daryl diaryl.
- the compound can be obtained by slowly and dropwise adding the above-mentioned alkenyl group-containing compound to an excess amount of the hydrosilyl group-containing compound represented by the formulas 16 to 22 in the presence of a hydrosilylation catalyst.
- a hydrosilylation catalyst represented by the formulas 16 to 22.
- the polymer (component A) of the third invention and the hydrosilyl group-containing compound (component B) can be mixed in any ratio, but from the viewpoint of curability, the molar ratio of the alkenyl group to the hydrosilyl group is 5 to 5. It is preferably in the range of 0.2, and more preferably in the range of 2.5 to 0.4. When the molar ratio is 5 or more, only a low-strength cured product with insufficient tackiness is obtained, and when it is less than 0.2, a large amount of active hydrosilyl groups remains in the cured product even after curing. Because it will remain Cracks andware are generated, and a uniform and strong cured product cannot be obtained.
- the curing reaction proceeds by mixing and heating the two components, but a hydrosilylation catalyst is added to accelerate the reaction more quickly.
- a hydrosilylation catalyst include a radical initiator such as an organic peroxide diazo compound, and a transition metal catalyst.
- radical initiator di t one-butyl peroxide O, dimethylsulfoxide, 2, 5-dimethyl-2, 5 - hexane di (t one Buchiruperuokishi), 2 , 5-Dimethyl-2,5-di (t-butylperoxy) 1-3-hexyne, dicumylperoxide, t "butylcumylperoxide,, a 'Bis (t-butylperoxy) isopropyl Dialkylperoxide, benzoylperoxide, p-chlorobenzoylperoxide, m-chlorobenzoylperoxide, 2,4-dichloroperbenzoylperoxide, lauroylbero Peroxyesters such as diacyl veloxides such as oxides, peresters such as mono-t-butyl perbenzoate, peroxyesters such as diisopropy
- transition metal catalyst examples include, for example, platinum alone, alumina, silica, platinum solids dispersed in a carrier such as a pump rack, chloroplatinic acid, chloroplatinic acid and alcohol, aldehyde, ketone, etc. And platinum-olefin complexes and platinum (0) -divinyltetramethyldisiloxane complexes.
- the catalyst other than platinized compound Rh C l (PP h 3 ) 3> Rh C l 3, Ru C 1 3, I r C 1 3> F e C 1 3, A 1 C 1 3, P d C 1 2 ⁇ H 2 0, N i C 1 2, T i C 1 4 , and the like.
- catalysts may be used alone or in combination of two or more. No particular limitation is imposed on the amount of catalyst, (A) relative to alkenyl groups lmo 1 components, the range of 1 0- 1 ⁇ 1 0- 8 mo 1 It may be used in an, preferably employed in the range of 1 0- 3 ⁇ 1 0- 6 mo 1. Curing and less than 1 0- 8 mo 1 does not proceed sufficiently. Since the hydrosilylation catalyst is expensive, it is preferable not to use 1 O ⁇ mo 1 or more.
- the curing conditions are not particularly limited, but generally, the curing is preferably performed at 0T to 200 ° (preferably at 30 ° C to 150 ° for 10 seconds to 24 hours. Particularly, at 80 ° C to 150 ° C.
- the cured product At the high temperature, some can be cured in a short time of about 10 seconds to 1 hour.
- the properties of the cured product depend on the main chain skeleton and molecular weight of the polymer (A) and the curing agent (B). It can be made widely from rubber to resin.
- curable composition of the present invention is not limited, it can be suitably used for the various uses described in the second invention.
- the fifth aspect of the present invention is:
- the crosslinkable silyl group represented by the general formula (1) is the same as the component (I) of the first curable composition of the present invention.
- the number of the crosslinkable functional groups is also the same as the component (I) of the first curable composition of the present invention.
- crosslinkable silyl group represented by the general formula (1) is preferably located at a terminal of the vinyl polymer.
- alkyl (meth) acrylate or alcohol (meth) acrylate may be used in view of the physical properties of the product. It is preferable that xyl is a main component.
- (Meth) alkyl acrylates include (meth) ethyl acrylate, (methyl) n-propyl acrylate, (meth) isopropyl acrylate, (meth) n-butyl acrylate, (meth) isobutyl acrylate, Tert-butyl methacrylate, n-pentyl (meth) acrylate, n-hexyl (meth) acrylate, cyclohexyl (meth) acrylate, n-heptyl (meth) acrylate, (meth) ) One-n-butyl acrylate, 2-ethylhexyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, stearyl acrylate, etc. However, ethyl acrylate, butyl acrylate, isobutyl acrylate
- alkoxyalkyl (meth) acrylate examples include 2-methoxethyl (meth) acrylate, 2-ethoxyxyl (meth) acrylate, and 1-3-methoxybutyl (meth) acrylate, and 2-methoxyethyl acrylate.
- 2-Ethoxytyl (meth) acrylate is particularly preferred.
- vinyl monomers may be copolymerized in addition to the alkyl (meth) acrylate and the alkoxyalkyl (meth) acrylate.
- Vinyl monomers that may be copolymerized include (meth) acrylic acid, phenyl (meth) acrylate, tolyl (meth) acrylate, benzyl (meth) acrylate, and 2- (hydroxy) methacrylate.
- Acrylic monomers such as styrene, vinyltoluene, ⁇ -methylstyrene, chlorostyrene, styrenesulfonic acid and salts thereof; perfluoroethylene, perfluoropropylene, fluorine fluoride Fluorine-containing vinyl monomer such as lidene; silicon-containing such as vinyltrimethoxysilane and vinyltriethoxysilane Monoalkyl esters and dialkyl esters of maleic anhydride, maleic acid, maleic acid; fumaric acid, monoalkyl esters and dialkyl esters of fumaric acid; maleimide, methylmaleimide, ethylmaleimide, propylmaleimide, butylmaleimide, Maleimide monomers such as hexylmaleimide, octylmaleimide, dodecylmaleimide, stearylmaleimide, phenylmaleimide, and cyclohe
- the properties such as oil resistance, heat resistance, and cold resistance can be adjusted by changing the composition ratio of alkyl (meth) acrylate or / and alkoxyalkyl (meth) acrylate, which are the main constituent units of the vinyl polymer.
- alkyl acrylate is converted to pinyl. 60 to 80% by weight based on the total amount of all vinyl monomers constituting the polymer, and the alkoxyalkyl acrylate is based on the total amount of all vinyl monomers constituting the biel polymer.
- a vinyl polymer having a weight ratio of 20% or more and 40% or less is preferable.
- ethyl acrylate is 30% or more and 50% or less by weight based on the total amount of all vinyl monomers
- butyl acrylate is 20% or more by weight based on the total amount of all vinyl monomers.
- a vinyl polymer having 0% or less and 2-methoxyethyl acrylate in a weight ratio of 20% or more and 40% or less with respect to the total amount of all vinyl monomers has a good balance.
- the weight ratio of ethyl acrylate is 50% or more and 80% or less
- the weight ratio of butyl acrylate is 0% or more and 20% or less
- the weight ratio of 2-methoxyethyl acrylate is 20% or more and 40% or less.
- the oil resistance is excellent
- ethyl acrylate is 0% to 30% by weight
- butyl acrylate is 40% to 80% by weight
- 2-methoxyethyl acrylate is 2% by weight.
- the weight ratio of the alkyl acrylate to the total amount of all vinyl monomers constituting the vinyl polymer is not less than 20% and not more than 60% and not more than 100%.
- a vinyl polymer in which the alkoxyalkyl acid is 40 to 80% by weight based on the total amount of all the vinyl monomers constituting the vinyl polymer is preferred.
- the total amount of ethyl acrylate and butyl acrylate is 20% or more and 60% or less by weight based on the total amount of all vinyl monomers constituting the vinyl polymer, and 2-methoxyethyl acrylate is used.
- ethyl acrylate constituting the vinyl polymer and 30% or more and 60% or less of butyl acrylate by weight of the butyl polymer and acrylic acid 2-
- the weight ratio of methoxyethyl to the Bier polymer is 40% or more and 80% or less
- the cold resistance is particularly excellent.
- the weight ratio of ethyl acrylate is 30% or more and 60% or less
- the weight ratio of butyl acrylate is 0% or more and 10% or less
- the weight ratio of 2-methoxyethyl acrylate is 40% or more and 80% or less, Excellent oil and cold resistance.
- the alkyl acrylate has a weight ratio of 80% or more to 100% or less with respect to the total amount of all the vinyl monomers constituting the vinyl polymer, and A Bier polymer in which the alkoxyalkyl acrylate has a weight ratio of 0% or more and 20% or less based on the total amount of all vinyl monomers constituting the vinyl polymer is preferable.
- the weight ratio of ethyl acrylate to the total amount of all vinyl monomers constituting the vinyl polymer is 40% or more and 60% or less, and butyl acrylate is the all vinyl monomer constituting the vinyl polymer.
- the weight ratio is 0% or more and 40% or less and the 2-methoxyethyl acrylate is 0% or more and 20% or less with respect to the total amount of all vinyl monomers constituting the vinyl polymer, It has excellent oil resistance, heat resistance, surface tackiness and surface contamination.
- Ethyl acrylate is 0% to 40% by weight based on the total amount of all vinyl monomers constituting the vinyl polymer, and butyl acrylate is relative to the total amount of all Biel monomers constituting the vinyl polymer.
- the weight ratio is between 60% and 100% and 2-methoxyethyl acrylate is a vinyl polymer. If the weight ratio is 0% or more and 20% or less with respect to the total amount of the monomer, the oil resistance, heat resistance and rubber elasticity are excellent.
- the molecular weight and molecular weight distribution of the vinyl polymer are the same as those of the component (I) of the first curable composition of the present invention.
- the polymerization method of the vinyl polymer is not limited, but is the same as the component (I) of the first curable composition of the present invention.
- the method for introducing the crosslinkable silyl group of the vinyl polymer is not limited, but is the same as the component (I) of the first curable composition of the present invention.
- Component (II) Compound other than (I) having a methyl ester group
- the compound other than (I) having a methyl ester group in the fifth aspect of the present invention is not particularly limited, and both a non-polymer and a polymer can be used.
- the structure of the compound other than (I) having a methyl ester group is not particularly limited, but a compound having a primary or secondary carbon atom at the position of the methyl ester group is preferable because it has a large effect of suppressing curing delay.
- the compound other than (I) having a methyl ester group is not a polymer
- the compound is not limited, but the dimethyl ester of dicarboxylic acid has a high effect because the concentration of methyl ester per weight of the compound is high. It is preferable because it tends not to volatilize.
- the compound other than (I) having a methyl ester group is not a polymer
- the compound is not limited, but is preferably selected from the following group.
- the compound other than (I) having a methyl ester group is a polymer
- its structure is not particularly limited, but is preferably a polymer containing a monomer having a methyl ester group as a constituent component.
- the monomer having a methyl ester group is not particularly limited, but is preferably methyl acrylate.
- the compound other than (I) having a methyl ester group is a copolymer containing a monomer having a methyl ester group as a constituent component, among the ester groups of monomers other than the monomer having a methyl ester group,
- the alkoxy group of the ester group is not particularly limited, but it is preferable that the ester group having a primary and having 5 or more carbon atoms has a molar ratio of 80% or less to the methyl ester group.
- the ester is selected from the ester groups of monomers other than the monomer having a methyl ester group.
- the alkoxy group is not particularly limited, but it is preferable that the ester group having a primary number of 2 to 4 carbon atoms has a molar ratio of not more than 400% to the methyl ester group.
- the curing delay which is the subject of this patent, is largely caused by the influence of ester groups other than methyl ester, and the influence tends to be greater when the molecular weight of the alkoxy group of the ester group is larger.
- the effect of suppressing the curing delay due to the addition of a compound other than (I) having a methyl ester group tends to change depending on the ratio to the other ester groups, and the effect is larger when the ratio of the methyl ester group is larger. Even if a compound having a methyl ester group is added, the effect may not be sufficiently exhibited if this balance is poor.
- the amount of the compound other than (I) having a methyl ester group of the component (II) in the present invention is not limited, but is preferably large in order to exhibit the effect of suppressing curing delay. However, if too much, the viscosity of the compound and its Since the balance of physical properties of the cured product may be lost, it is preferable to add an appropriate amount according to the purpose.
- the compound having a methyl ester group is a polymer
- its synthesis method is not limited, and various known polymerization methods can be used.
- the monomer having a methyl ester group is a radical polymerizable monomer, general free radical polymerization, free radical polymerization using a chain transfer agent, continuous polymerization under high temperature and high pressure (Tables 57-502) No. 71, JP-A-59-62007, JP-A-62-15007, Japanese Translation of PCT International Publication No. 10-519192, etc.
- various controlled radical polymerization methods such as the atom transfer radical polymerization method described in the section of the method for synthesizing the polymer of the component (I) of the present invention may be used.
- the same substances as in the first curable composition of the present invention can be added to the fifth curable composition of the present invention.
- a curing catalyst and a silane coupling agent are generally often added. Further, the storage stability decrease, which is a problem to be solved in the fifth aspect of the present invention, occurs more frequently when these curing catalysts / silane coupling agents are blended, so that the effects of the present invention can be obtained more significantly. Therefore, a composition containing these is preferred.
- Various compounding agents may be added according to the desired physical properties.
- the fifth component (III) condensation curing catalyst of the present invention is the same as the first component (III) condensation curing catalyst of the present invention.
- the fifth component (IV) amine compound of the present invention is the same as the first component (III) amine compound of the present invention.
- the silane coupling agent which is a kind of the fifth component (IV) amine compound of the present invention is the same as the silane coupling agent which is a kind of the first component (III) amine compound of the present invention.
- the compounding material other than the silane coupling agent is not particularly limited, and examples thereof include an epoxy resin, a phenol resin, sulfur, an alkyl titanate, and an aromatic polyisocyanate.
- the adhesion imparting agent such as a silane coupling agent may be used alone or in combination of two or more.
- the addition of these adhesiveness-imparting agents can improve the adhesion to the adherend.
- 0.1 to 20 parts by weight of a silane coupling agent is used among the above-mentioned adhesiveness-imparting agents in order to improve the adhesiveness, particularly the adhesiveness to a metal-coated surface such as an oil pan. It is preferred to use
- the same plasticizer, filler, physical property modifier, thixotropy-imparting agent, antioxidant, etc. as in the first curable composition of the present invention may be added.
- the polymer blend in the fifth curable composition of the present invention is the same as the first curable composition of the present invention.
- the curing rate after storage for a long time is significantly changed from that before storage.
- a sealing material when used as a sealing material, there is work to adjust the surface shape after application to the joints, or to apply a finishing material and paint, so that the surface hardening time, so-called skinning time, changes Is an obstacle to work.
- the storage conditions for confirming the effects of the present invention are not particularly limited. However, in general, changes during storage are difficult to occur at low temperatures, and can be quite high during storage in summer. To perform the evaluation, the temperature should be between room temperature and about 80 ° C. Preferably, in the embodiment of the present invention, it is carried out with 5 O :.
- a sixth aspect of the present invention is a sealing material, a liquid gasket, and an adhesive using the fifth curable composition of the present invention.
- the fifth curable composition of the present invention has improved storage stability and is suitably used for sealing materials, liquid gaskets, and adhesives.
- the seventh aspect of the present invention is characterized in that it comprises a compound having a methyl ester group, and (I) a vinyl polymer having at least one crosslinkable silyl group represented by the general formula (1) as an essential component. It is a curable composition.
- the crosslinkable silyl group represented by the general formula (1) is preferably at a terminal of the Bier polymer.
- the vinyl polymer as the component (I) is preferably a (meth) acrylic polymer.
- the crosslinkable silyl group represented by the general formula (1) is preferably at the terminal of the vinyl polymer.
- the monomer containing a methyl ester group constituting the Bier polymer of the component (I) is preferably methyl acrylate or methyl methacrylate, and more preferably methyl acrylate.
- the vinyl polymer of component (I) is preferably 23 and liquid.
- the vinyl polymer as the component (I) is preferably one synthesized by living radical polymerization, and more preferably one synthesized by atom transfer radical polymerization.
- the ratio of the measured weight average molecular weight to the number average molecular weight is preferably less than 1.8.
- the seventh curable composition of the present invention is preferably a one-part curable composition.
- the compound having a seventh methyl ester group of the present invention may be the vinyl polymer of the component (I) or another compound.
- Component having a methyl ester group (B), or a component having a methyl ester group may be the vinyl polymer of the component (I) or another compound.
- Examples of the compound other than (I) include those described in the first to sixth aspects of the present invention.
- the seventh curable composition of the present invention preferably contains (III) a condensation curing catalyst.
- a condensation curing catalyst a tin-based curing catalyst is preferable.
- the seventh curable composition of the present invention preferably contains (IV) an amine compound.
- the amino group of the amine compound is preferably a primary amine, and more preferably the amine compound is a silane coupling agent.
- One of the preferable embodiments of the seventh curable composition of the present invention is a composition containing a polyether polymer having at least one crosslinkable silyl group represented by the general formula (1).
- a ninth aspect of the present invention includes the following two components:
- number average molecular weight and “molecular weight distribution (ratio of weight average molecular weight to number average molecular weight)” were calculated by a standard polystyrene conversion method using gel permeation chromatography (GPC). However, a GPC column filled with a polystyrene cross-linked gel (shodeX GPCK-804; manufactured by Showa Denko KK) was used, and a gel form was used as the GPC solvent.
- GPC gel permeation chromatography
- the obtained polymer and KYOWA WARD 500 SH (manufactured by Kyowa Chemical: 2 parts by weight per 100 parts by weight of polymer), KYONO WARD 700 SL (manufactured by Kyowa Chemical: 200 parts by weight of polymer) Parts by weight) was mixed with xylene (100 parts by weight based on 100 parts by weight of the polymer), and the mixture was stirred at 130. After 3 hours, the aluminum silicate was filtered, and the volatile components of the filtrate were distilled off by heating under reduced pressure. The polymer was devolatilized by heating at 180 at reduced pressure for 12 hours.
- Polymer and Kyodo 500 SH (manufactured by Kyowa Chemical: 3 parts by weight based on 100 parts by weight of polymer), Kyoword 700 SL (manufactured by Kyowa Chemical: 3 parts by weight based on 100 parts by weight of polymer) was mixed with xylene (100 parts by weight with respect to 100 parts by weight of the polymer), and the mixture was stirred at 130. After 5 hours, the aluminum silicate was filtered, and the volatile components in the filtrate were distilled off by heating under reduced pressure to obtain an alkenyl-terminated polymer [1].
- the number average molecular weight of the polymer [1] was 19,000, the molecular weight distribution was 1.2, and the average number of alkenyl groups introduced per molecule of the polymer determined by 1 H-NMR analysis was 2.0. Was individual.
- the number average molecular weight of the obtained polymer [2] was 20000 and the molecular weight distribution was 1.2.
- the average number of silyl groups inserted was 2.0.
- the obtained polymer and KYOWA WARD 500 SH (manufactured by Kyowa Chemical: 2 parts by weight per 100 parts by weight of polymer), KYONO WARD 700 SL (manufactured by Kyowa Chemical: 200 parts by weight of polymer) Parts by weight) was mixed with xylene (100 parts by weight based on 100 parts by weight of the polymer), and the mixture was stirred at 130. After 3 hours, the aluminum silicate was filtered, and the volatile components of the filtrate were distilled off by heating under reduced pressure. The polymer was devolatilized by heating at 180 ° C. under reduced pressure for 12 hours.
- Polymer and Kyodo 500 SH (3 parts by weight for 100 parts by weight of polymer) and Kyoword 700 SL (3 parts by weight for 100 parts by weight of polymer)
- the mixture was mixed with xylene (100 parts by weight based on 100 parts by weight of the polymer) and stirred at 130 ° C. After 5 hours, the aluminum silicate was filtered, and the volatile components of the filtrate were distilled off by heating under reduced pressure to obtain an alkenyl-terminated polymer [3].
- the number average molecular weight of the polymer [3] was 22,000, and the molecular weight distribution was 1.2.
- the average number of alkenyl groups introduced per molecule of the polymer determined by 1 H-NMR analysis was 2.1. Was individual.
- the volatile component of the mixture was distilled off under reduced pressure to obtain a poly (mono-n-butyl acrylate / methyl acrylate stearyl acrylate) polymer [4] having a silyl group at the terminal.
- the number average molecular weight of the obtained polymer [4] was 23,000 by GPC measurement (polystyrene conversion), and the molecular weight distribution was 1.3.
- the average silyl group introduced per polymer molecule determined by NMR analysis was 1.7.
- a platinum catalyst, dimethoxymethylsilane, and methyl orthoformate were added to the polymer.
- the amount of the platinum catalyst used was 10 ppm
- the amount of dimethoxymethylsilane and methyl orthoformate used was 2 molar equivalents and 1 molar equivalent, respectively, based on the alkenyl group of the polymer.
- the volatiles were distilled off under reduced pressure to obtain a poly (mono-n-butyl acrylate) polymer [6] having a silyl group at the terminal.
- the number average molecular weight of the polymer [6] was 27,000 and the molecular weight distribution was 1.4, and the average number of silyl groups introduced per polymer molecule, determined by iH-NMR analysis, was 1.7 Met.
- the number average molecular weight of the polymer [8] was 21,000, the molecular weight distribution was 1.3, — The average number of silyl groups introduced per molecule of polymer determined by NMR analysis was 2.0.
- Example 1 [2] Diisodecylfurate: manufactured by Kyowa Hakko Co., Ltd. 50 parts, 1.5 parts of vinyltrimethoxysilane, N- () 3-aminoethyl) 2 parts of monoaminopropyl trimethoxysilane After mixing, 1 part of a tetravalent Sn catalyst (dibutyltin diacetyl acetonate) was further mixed to prepare a one-liquid formulation.
- a tetravalent Sn catalyst dibutyltin diacetyl acetonate
- a one-pack formulation was prepared in the same manner as in Example 3 except that the polymer [4] obtained in Example 2 was used instead of the polymer [2] used in Example 1.
- a one-component formulation was prepared in the same manner as in Example 3 except that the polymer [6] obtained in Comparative Example 1 was used instead of the polymer [2] used in Example 1.
- Each of the one-pack formulations prepared in Examples 3 and 4 and Comparative Example 3 was stored at 50 ° C for 4 weeks, and the one before storage was cured at room temperature. Comparative evaluation was performed. The skinning time in the present invention was evaluated by the time until the composition mixed with the curing catalyst exhibited rubber elasticity and did not adhere to the metal spatula.
- Example 1 100 parts of the polymer [2] obtained in Example 1 was mixed with 1 part of a tetravalent Sn catalyst (# 918 dibutyltin diacetyl acetonate) and thoroughly mixed by hand. An m- thick cured sheet was prepared. The cured product was allowed to stand at room temperature for 2 days, and then cured and cured at 50 ° C for 3 days.
- a tetravalent Sn catalyst # 918 dibutyltin diacetyl acetonate
- a sheet-like cured product was produced in the same manner as in Example 3 except that the polymer [8] obtained in Comparative Example 2 was used instead of the polymer [2] used in Example 3.
- a No. 2 (1/3) dumbbell-shaped test piece was punched from the cured product after curing and evaluated for tensile properties (using Shimadzu autograph, measuring temperature: 23 ° C, tensile speed: 200 mm / sec). did.
- Example 6 The cured product of Example 5 had the same elongation and higher strength than the cured product of Comparative Example 4. (Example 6)
- the polymer [1] obtained in Example 1 was added to a polyvalent hydrogen silicon compound and a 1,1,3,3-tetramethyl-1,3-divinyldisiloxane complex (8.3 X 10— 8 mol / L xylene solution).
- a polyvalent hydrogen silicon compound methyl hydrogen siloxane partially modified with ⁇ -methylstyrene (S_3: Si value: 7.69 mmo1 / g) was used.
- the amount of the polyvalent hydrogen silicon compound used was such that the molar ratio of the alkenyl group of the polymer to the SiH group of the hydrogen silicon compound was 1Z1.2 to 1 / 1.5.
- the platinum catalyst was used in a predetermined amount with respect to the alkenyl group of the polymer.
- composition thus obtained was degassed under reduced pressure, poured into a mold, heated and cured, and heated to 180 ° C. to obtain a rubber-like cured product.
- a cured sheet was produced in the same manner as in Example 6, except that the polymer [7] obtained in Comparative Example 2 was used instead of the polymer [1] used in Example 6. (Evaluation 3)
- Example 6 As in Evaluation 2, the mechanical properties of the cured products obtained in Example 6 and Comparative Example 5 were measured. The cured product of Example 6 had higher strength. (Comparative Example 6) Synthesis of Bier polymer having at least one crosslinkable silyl group at the terminal
- alkenyl-terminated polymer [9] Eight hours after the addition of octadiene, the pressure inside the reaction vessel was reduced to remove volatile components to obtain an alkenyl-terminated polymer [9].
- the number average molecular weight of the obtained polymer [9] was 26,000, and the molecular weight distribution was 1.3.
- the average number of alkenyl groups introduced per polymer molecule determined by 1 H-NMR analysis was 2. There was one.
- a platinum catalyst, dimethoxymethylsilane, and methyl orthoformate were added to the polymer.
- the amount of the platinum catalyst used was 10 ppm
- the amount of dimethoxymethylsilane and methyl orthoformate used was 2 molar equivalents and 1 molar equivalent, respectively, based on the alkenyl group of the polymer.
- volatiles were distilled off under reduced pressure to obtain a poly (1-n-butyl acrylate) polymer [10] having a silyl group at the terminal.
- the number average molecular weight of the polymer [10] was 27,000 and the molecular weight distribution was 1.4, and the average number of silyl groups introduced per molecule of the polymer determined by 1 H-NMR analysis was 1.7. Was individual.
- a one-component formulation was prepared in the same manner as in Example 7, except that 50 parts of DIDP (disodecyl phthalate: manufactured by Kyowa Hakko) was used in place of the methyl ester compound used in Example 7. (Evaluation 4)
- Example 7 Each of the one-pack formulations prepared in Examples 12 to 12 and Comparative Example 7 was stored at 50 ° C for 2 weeks and 4 weeks, and before storage. It was cured at room temperature and the skinning time was evaluated comparatively. The skinning time in the present invention was evaluated by the time until the composition mixed with the curing catalyst exhibited rubber elasticity and did not adhere to the metal spatula.
- the number average molecular weight of the obtained polymer [11] was 24100 in GPC measurement (mobile phase chromate form, converted to polystyrene) and the molecular weight distribution was 1.27, and it was determined by 1 H—NMR analysis.
- the number of alkenyl groups per polymer was 2.6.
- the number average molecular weight of the obtained polymer was 2,600,000 by GPC measurement (polystyrene conversion), and the molecular weight distribution was 1.9. Average silyl groups introduced per polymer The number of was determined by 1 H-NMR analysis to be 1.9. (Example 13)
- This copolymer [14] (350 g), dimethoxymethylhydrosilane (13.25 mL, 107.4 mmo 1), dimethyl orthoformate (3.92 mL, 35.8 By using mmo 1) and a platinum catalyst, a poly (1-n-butyl acrylate Z methyl acrylate) copolymer [15] having a silyl group at a terminal was obtained.
- the number average molecular weight of the obtained copolymer was about 20000, and the molecular weight distribution was 1.2.
- the average number of silyl groups introduced per molecule of the copolymer was determined by 1 H NMR analysis to be about 2.0.
- This copolymer [16] (260 g), dimethoxymethylhydrosilane (8.46 mL, 68.6 mmo 1), dimethyl orthoformate (2.50 mL, 22.9 mmo 1), and platinum catalyst was used to obtain a poly (mono-n-butyl acrylate Z methyl acrylate) copolymer [17] having a silyl group at the terminal.
- the number average molecular weight of the obtained copolymer was about 23000, and the molecular weight distribution was 1.3.
- the average number of silyl groups introduced per molecule of the copolymer was determined by 1 HN MR analysis to be about 1.7.
- the toluene was distilled off from the obtained solution under reduced pressure using an evaporator to obtain an acrylic copolymer.
- the number average molecular weight of the obtained copolymer was 2 174, and the molecular weight distribution was 2.7 viscosity.
- Example 15 Based on 100 parts by weight of the polymer [13] obtained in Comparative Example 8, 60 parts by weight of DI DP (diisodecyl phthalate) as a plasticizer, and onium calcium carbonate (trade name: CCR, manufactured by Shiraishi Industry Co., Ltd.) 1 50 parts by weight, heavy calcium carbonate (Maruo Calcium Co., Ltd., trade name: Nanox 25A) 20 parts by weight, titanium oxide (Ishihara Sangyo Co., Ltd., trade name: R-820) 10 parts by weight, thixo 2 parts by weight, benzotriazole-based UV absorber (Ciba Specialty Chemicals Co., Ltd., trade name: Tinuvin 21 3) 1 wt.
- DI DP diisodecyl phthalate
- onium calcium carbonate trade name: CCR, manufactured by Shiraishi Industry Co., Ltd.
- heavy calcium carbonate Maruo Calcium Co., Ltd., trade name: Nanox 25A
- titanium oxide Ishihara San
- Example 17 The test was performed in the same manner as in Example 15 except that 10 parts by weight of DMA (dimethyl adipate) was added.
- Example 15 The same procedure as in Example 15 was carried out except that 80 parts by weight of Alfon UP 1020 (manufactured by Toagosei Co., Ltd.) and 20 parts by weight of DMA were used instead of DI DP as the plasticizer in Example 15. The method was tested.
- Nanox 25A 20 parts by weight, titanium oxide (manufactured by Ishihara Sangyo Co., Ltd., product name: R— 820) 10 parts by weight, thixotropy-imparting agent (manufactured by Kusumoto Kasei Co., Ltd., trade name: D-6500) 2 parts by weight, benzotriazole ultraviolet absorber (manufactured by Ciba Specialty Chemicals Co., Ltd., trade name) : Tinuvin 2 1 3) 1 part by weight, hindered amine light stabilizer (manufactured by Sankyo Co., Ltd., trade name: SANOL LS76 5) 1 part by weight is measured, mixed and kneaded well, then a small 3 paint roll Passed three times.
- titanium oxide manufactured by Ishihara Sangyo Co., Ltd., product name: R— 820
- thixotropy-imparting agent manufactured by Kusumoto Kasei Co., Ltd., trade name:
- a sheet-like cured sample with a thickness of 3 mm specified in JISA 5758 was prepared from the above curable composition, and a dumbbell for tensile test ( JISA type) was prepared.
- Plasticizer 100 parts by weight of the copolymer obtained in Example 14 As a number average molecular weight of 12000 PPG (manufactured by Bayer Corp.) ACCLA IM 12200) 80 parts by weight, Colloidal calcium carbonate (manufactured by Shiraishi Industry Co., Ltd., trade name: CCR) 150 parts by weight, heavy calcium carbonate ( Maruo Calcium Co., Ltd .; Nanox 25 A) 20 parts by weight, titanium oxide (manufactured by Ishihara Sangyo Co., Ltd., trade name: R-820) 10 parts by weight, thixotropic agent (Kusumoto Chemical Co., Ltd.) (Product name: D-6500) 2 parts by weight, benzotriazole UV absorber (Chipa 'Specialty' Chemicals Co., Ltd., product name: Tinuvin 2 13> 1 part by weight, hindered amine light stabilizer ( Manufactured by Sankyo Co., Ltd., trade name: SANOL
- a linear polypropylene oxide 500 having a number average molecular weight of 20,000 and a main chain skeleton obtained using a double metal cyanide complex catalyst and having an aryl group at the end g and 10 g were added, and azeotropic dehydration was performed at 90 ° C. After the hexane was distilled off under reduced pressure, the atmosphere was replaced with nitrogen. To this was added chloroplatinic acid catalyst 201 (a 5% by weight solution of platinum in isopropanol) and, while stirring, DMS (dimethoxymethylsilane). 4.6 g was slowly added dropwise.
- the polymer having a number average molecular weight of 3,000 was used as a plasticizer.
- 0 (polypropylene glycol) 55 parts by weight, calcium carbonate (Shiraishi Industry Co., Ltd., trade name: CCR) 1 20 parts by weight, titanium oxide (Ishihara Sangyo Co., Ltd., trade name: R-820) 20 parts by weight, thixotropy-imparting agent (manufactured by Kusumoto Kasei Co., Ltd., trade name: D-6500) 2 parts by weight, benzotriazol-based ultraviolet absorber (Ciba Specialty Chemicals Co., Ltd., trade name: Tinuvin 327) 1 part by weight, hindered amine light Stabilizer (manufactured by Sankyo Co., Ltd., trade name: SANOL LS770) 1 part by weight was weighed, mixed and kneaded well, and then passed through a small plasticizer (Shiraishi Industry Co., Ltd., trade
- Example 22 The test was performed in the same manner as in Example 22 except that DMA was not added in Example 22.
- Example 15 to 23 and Comparative Examples 11 to 13 are shown in Tables 4, 5 and 5. See Figure 6.
- the measurement items in the table are as follows.
- Tack is felt by touch.
- Tack is hardly felt.
- a linear polypropylene oxide 500 having a number average molecular weight of 20,000, whose main chain skeleton is obtained using a double metal cyanide complex catalyst and whose terminal is an aryl group is used.
- g and hexane (10 g) were added, and azeotropic dehydration was performed at 90. Hexane was distilled off under reduced pressure, and then replaced with nitrogen.
- chloroplatinic acid catalyst 201 (5% by weight in terms of platinum in isopropanol) was added, and DMS (dimethoxymethylsilane) was added with stirring. 4.6 g was slowly added dropwise.
- Example 24 A test was conducted in the same manner as in Example 24, except that 10 parts by weight of dimethyl sebacate was used instead of dimethyl adipate in Example 24.
- Example 24 The test was performed in the same manner as in Example 24 except that dimethyl adipate in Example 24 was not added.
- Table 7 shows the results of measuring the tensile properties using an autograph (manufactured by Shimadzu Corporation, AG500C type) using the dumbbells for the tensile tests of Examples 24, 25 and Comparative Example 14.
- M 100 denotes modulus at 100% elongation
- Tb denotes breaking strength
- Eb denotes elongation at break.
- the measurement items other than the tensile test in the table are as follows.
- a curable composition having improved storage stability due to a methyl ester group contained in a polymer can be obtained.
- the curable composition can be suitably used as a sealing material and the like by making use of its improved storage stability.
- a polymer having a methyl ester group at an appropriate composition ratio improves the mechanical properties of the cured product.
- a vinyl polymer having a crosslinkable silyl group having improved storage stability by adding a compound having a methyl ester group is obtained.
- a curable composition as an essential component is obtained.
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WO2010044367A1 (ja) * | 2008-10-16 | 2010-04-22 | 東亞合成株式会社 | 硬化性組成物 |
JP2010209205A (ja) * | 2009-03-10 | 2010-09-24 | Kaneka Corp | 硬化性組成物 |
JP2013116976A (ja) * | 2011-12-02 | 2013-06-13 | Cemedine Co Ltd | 一液型湿気硬化性組成物、この組成物からなるシール材及びこのシール材を用いた太陽電池モジュール |
WO2015133564A1 (ja) * | 2014-03-05 | 2015-09-11 | 株式会社カネカ | 硬化性組成物 |
JPWO2015133564A1 (ja) * | 2014-03-05 | 2017-04-06 | 株式会社カネカ | 硬化性組成物 |
US10072132B2 (en) | 2014-03-05 | 2018-09-11 | Kaneka Corporation | Curable composition |
WO2023053988A1 (ja) * | 2021-09-28 | 2023-04-06 | 株式会社カネカ | 重合体及び硬化性組成物 |
Also Published As
Publication number | Publication date |
---|---|
CA2513410A1 (en) | 2004-08-19 |
EP1586605A4 (en) | 2006-10-04 |
JP4925664B2 (ja) | 2012-05-09 |
JPWO2004069923A1 (ja) | 2006-05-25 |
EP1586605B1 (en) | 2011-11-02 |
EP1586605A1 (en) | 2005-10-19 |
US20060205887A1 (en) | 2006-09-14 |
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