WO1998022530A1 - Hydrofuge tenace et articles ainsi revetus - Google Patents
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- WO1998022530A1 WO1998022530A1 PCT/JP1997/004178 JP9704178W WO9822530A1 WO 1998022530 A1 WO1998022530 A1 WO 1998022530A1 JP 9704178 W JP9704178 W JP 9704178W WO 9822530 A1 WO9822530 A1 WO 9822530A1
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- Prior art keywords
- fluorine
- resin
- vinyl
- copolymer
- containing resin
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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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
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
Definitions
- the present invention relates to a durable water repellent having long-lasting effects.
- Water repellents used for various purposes by exhibiting water repellency by forming a film by being coated on a substrate such as concrete, wood, cloth, etc. are widely used in the fields of, for example, construction and building materials. I have. Conventionally, organic silicon compounds and the like have been used, but they cannot exhibit sufficient water repellency when water stays on the substrate surface for a long period of time, and also have poor weather resistance. Met.
- Japanese Patent Publication No. 62-16141 discloses a paint made of an epoxy resin, a phenolnoalkyd resin, etc.
- a method has been proposed in which a paint mainly containing a fluorine-based copolymer having a curing reactive site such as quintyl vinyl ether or glycidyl vinyl ether is applied thereon.
- fluorine-based copolymers have excellent durability with so-called coating resins, it is difficult to exhibit water repellency of 110 ° C or higher.
- Japanese Unexamined Patent Application Publication No. 2-52074 discloses a technique using a non-crosslinkable fluorine-containing copolymer which does not contain a curing agent in one liquid. Is disclosed. However, even this technique did not have the effect of maintaining the natural texture of concrete or wood, or maintaining the unique texture of cloth.
- JP-A-2-107583 discloses a cement-based concrete excellent in weather resistance and stain resistance by using a water / oil repellent comprising a specific fluorine-containing silane compound. Paint is disclosed. However, the sustainability of the water repellent effect was not satisfactory either.
- Japanese Unexamined Patent Publication No. 5-200353 discloses a paint suitable for use as a cement-based substrate, which comprises a fluorinated olefin copolymer having a hydroxyl group or a carboxyl group and a specific silane compound. RL technology is disclosed. However, it emphasized durability and did not devise water repellency.
- the present invention has excellent water repellency against moisture-containing base materials such as concrete, wood, and cloth, and can be expected to have an effective effect on acid rain.
- An object of the present invention is to provide a durable water repellent agent that maintains the natural texture and unique texture of a cloth and maintains the water repellency for a long period of time, and a painted article coated with the same, particularly concrete. Things.
- the durable water repellent of the present invention is a durable water repellent comprising a repellent and a fluorine-containing resin, wherein the repellent is a perfluoroalkyl group-containing substance (I), a fluorine-based surfactant ( ⁇ ), a fluorine-based oil (m), a fluorosilicone oil (IV), and a silicone oil (V), at least one of which is selected from the group consisting of:
- the weight ratio is (repellent): (fluorine-containing resin
- the first component of the durable water repellent of the present invention is a repellent.
- the repellent is a perfluoroalkyl group-containing substance [1], a fluorinated surfactant ( ⁇ ), a fluorinated oil ( ⁇ ), a fluorosilicone oil (IV), a silicone oil (V), or any of these. Consisting of a mixture of two or more. Hereinafter, these repellents will be described in detail.
- the first of the repellents used in the present invention is a perfluoroalkyl group-containing substance (I).
- the perfluoroalkyl group-containing substance (I) includes a perfluoroalkyl group-containing polymer (I-1), a perfluoroalkyl group-containing compound (I1-2-1), and an isocyanate compound (1).
- a product (1-3) obtained by an ester reaction between a compound having a perfluoroalkyl group and a compound having a functional group of carboxylic acid or phosphoric acid is preferable.
- the first of the perfluoroalkyl group-containing substances (I) used in the present invention is a polymer (1-1) having a perfluoroalkyl group.
- the polymer having a perfluoroalkyl group (1-1) include a homopolymer of a perfluoroalkyl-containing ethylenically unsaturated monomer or a copolymer thereof and another monomer. And so on.
- perfluoroalkyl-containing ethylenically unsaturated monomer examples include, for example, compounds represented by the following formula.
- Rf CH CH (CH 2)
- n OCOCR 3 CH 2
- R f the number of carbon atoms of the alkyl group to display the par full O b alkyl group 4 to 2 0.
- R 1 represents hydrogen or an alkyl group having 1 to 10 carbon atoms.
- R 2 represents an alkylene group having 1 to 10 carbon atoms.
- R 3 represents hydrogen or a methyl group.
- R 4 represents an alkyl group having 1 to 17 carbon atoms.
- n represents an integer of 1 to 10.
- m represents an integer of 0 to 10.
- alkyl (meth) acrylates having 1 to 20 carbon atoms in the alkyl group include, for example, alkyl (meth) acrylates having 1 to 20 carbon atoms in the alkyl group, (Meth) cyclohexyl acrylate, benzyl (meth) acrylate, polyethylene glycol di (meth) acrylate, N-methylol acrylamide, ethylene, vinyl chloride, vinyl fluoride, (meth) acrylic acid Amid, styrene, monomethylstyrene, p-methylstyrene, vinyl alkyl ether having 1 to 20 carbon atoms in alkyl group, halogenated alkyl vinyl ether having 1 to 20 carbon atoms in alkyl group, carbon in alkyl group Vinyl alkyl ketone with a number of 1 to 20, maleic anhydride, butadiene, isoprene, A silyl group-containing vinyl monomer, for example, vinyl
- Unitidin TG-652 manufactured by Daikin Industries, Ltd.
- Unitidin TG-664 manufactured by Daikin Industries, Ltd.
- UNIDyne TG-410 manufactured by Daikin Industries, Ltd.
- the second of the perfluoroalkyl group-containing substance (I) used in the present invention is a reaction product of a perfluoroalkyl group-containing compound (I1-2-1) and an isocyanate compound (I1-2-3) ( I-I 2).
- the perfluoroalkyl group-containing compound (I-2-1) is represented by the following general formula.
- R f, R 1 , R 2 , R 4 , and n are the same as described above.
- Aromatic compounds containing phenolic isocyanate groups as polyisocyanate compounds, for example, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, hexamethylene triisocyanate, lysine ester triisocyanate; , Isophorone diisocyanate, hydrogenated xylylene diisocyanate, toluene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate, etc .; and modified products thereof, such as modified tris-burette, isocyanurate Modified form, triol modified form and the like can be mentioned.
- reaction product (1-2) of the above-described perfluoroalkyl-containing compound and an isocyanate compound examples include commercially available products such as Daigard RE (manufactured by Daiwa Chemical Industry Co., Ltd.).
- the third of the perfluoroalkyl group-containing substance (I) used in the present invention is a perfluoroalkyl group-containing compound (I-13-1) and a compound having a functional group of carboxylic acid or phosphoric acid ( It is a product (I-13) obtained by an ester reaction with I-13-2).
- the perfluoroalkyl group-containing compound (I-3-1) is represented by the following general formula.
- R i, R ', R 2, R 4, n is as defined above.
- the second repellent used in the present invention is a fluorinated surfactant ( ⁇ ).
- the fluorine-based surfactant is a surfactant having a perfluoroalkyl group or a surfactant having a perfluoroalkylene group, and is an anionic fluorine-based surfactant, a cationic fluorine-based surfactant. And amphoteric fluorosurfactants, and nonionic fluorosurfactants.
- UNIDYN DS-101 manufactured by Daikin Industries
- UNIDINE DS-202 manufactured by Daikin Industries
- UNIDINE DS-301 manufactured by Daikin Industries
- UNIDINE DS-401 6 manufactured by Daikin Industries, Ltd.
- the third repellent used in the present invention is a fluorine-based oil ( ⁇ ).
- fluorine-based oil examples include a polymer of perfluoropolyether / chlorotrifluoroethylene, and other specific fluorinated hydrocarbon compounds. More specifically, Demnum S-20 (manufactured by Daikin Industries), Daifoil # 20 (manufactured by Daikin Industries) and the like can be mentioned.
- the fourth repellent used in the present invention is full-year silicone oil (IV).
- the above fluorosilicone oil (W) contains a fluoroalkyl group on the side chain or terminal of the polysiloxane. More specifically, FS-125-65 (manufactured by Dow Corning Silicone Toray), X-222-819 (manufactured by Shin-Etsu Chemical Co., Ltd.)
- the fifth repellent used in the present invention is silicone oil (V).
- the viscosity of the silicone oil (V) at 25 ° C is 50 cps or more
- Silicone oils having a reactive group on the side chain or terminal can be mentioned. More specifically, dimethyl silicone oil, methyl chloride silicone oil, methyl perfluoro silicone oil, organically modified silicone oil, and the like can be mentioned.For example, compounds represented by the following general formula can be mentioned. Can be mentioned.
- R ′ 2 represents an alkylene group having 1 or more carbon atoms.
- PA is a polyalkylene replacement sheet (Rule 26) Represents an oxide.
- x and y represent an integer of 1 or more.
- PRX 413 manufactured by Dow Corning Toray Silicone Co., Ltd.
- SF 8417 unsame
- SF 84 18 same
- BY 16—85 5 B SF8427 (same)
- SF8428 sekunder-like compound
- X-222-161C Shin-Etsu Chemical Co., Ltd.
- KF-857 KP — 3 5 8 (same as above)
- KP—35 9 asame as above
- the second component of the durable water repellent of the present invention is a fluorine-containing resin.
- the fluorine-containing resin is composed of an aqueous dispersion or dissolved in a solvent.
- the fluorine-containing resin may be in the form of an aqueous dispersion dispersed in an aqueous medium or in the form of a resin solution dissolved in an appropriate solvent. It may be in the form of an aqueous dispersion, but from the viewpoint of not generating odor and from the viewpoint of environmental protection.
- the fluorine-containing resin is made of a fluorine-containing resin, or is a mixture of a fluorine-containing resin and another resin.
- the other resin include an acrylic resin, an acrylic silicone resin, an epoxy resin, a urethane resin, an ester-based resin, and the like. Therefore, an acrylic resin is preferred.
- the “fluorine-containing resin” means the “fluorine-containing resin” itself, or a mixture of the “fluorine-containing resin” and “another resin” .
- the term “other resin” refers to an acrylic resin, an acrylic silicone resin, an epoxy resin, a urethane resin, an ester resin, or the like. Preferably, it means only an acrylic resin.
- the acryl resin as the other resin will be described later in detail.
- the above fluorinated resins can be broadly classified into the following four.
- Fluorinated resin composed of copolymer of fluororefin and vinyl monomer (1) Fluorinated resin composed of copolymer of fluororefin (2)
- Fluorine-containing resin consisting of homopolymer of fluororefin (3)
- fluororesin refers to a copolymer of one or more fluoroolefins and one or more vinyl monomers. It means a polymer, a copolymer of two or more kinds of fluorinated olefins, or a homopolymer of fluorinated olefins.
- fluorinated resin refers to not only the above-mentioned (1) to (3), but also the “aqueous dispersion” described in detail below.
- the acryl resin is not particularly limited as long as it is a polymer whose main chain is composed of a hydrocarbon chain derived from acrylic acid and / or methacrylic acid, and is usually a homopolymer of an acryl-based monomer, Copolymers of an acryl-based monomer with another monomer having an ethylenic unsaturated double bond copolymerizable therewith can be exemplified.
- the acrylic monomer is not particularly limited as long as it contains acrylic acid and / or methacrylic acid (hereinafter also referred to as “(meth) acrylic acid”).
- (meth) acrylic acid for example, acrylic acid, alkyl acrylate Esters, methacrylic acid, alkyl methacrylate and the like can be mentioned.
- the alkyl (meth) acrylate is not particularly limited, and examples thereof include alkyl acrylates having an alkyl group having 1 to 8 carbon atoms and alkyl methacrylates having an alkyl group having 1 to 18 carbon atoms. I can do it.
- alkyl acrylate having 1 to 18 carbon atoms in the alkyl group examples include, for example, methyl acrylate, ethyl acrylate, n-propyl acrylate, i-propyl acrylate, n-butyl acrylate, I-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, ⁇ -butyl acrylate
- examples thereof include n-hexyl acrylate, t-butylcyclohexyl acrylate, stearyl acrylate, lauryl acrylate, and the like.
- alkyl methacrylate having 1 to 18 carbon atoms in the alkyl group examples include methyl methacrylate, methyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, and methacrylate.
- Monobutylcyclohexyl, stearyl methacrylate, lauryl methacrylate and the like can not be mentioned.
- the acrylic monomer may be copolymerized with a polyfunctional monomer such as ethylene glycol dimethacrylate, propylene glycol dimethacrylate for the purpose of improving solvent resistance and water resistance. .
- Examples of the monomer having an ethylenic unsaturated bond copolymerizable with the acrylate or the methacrylate include the following (I) and the following (II).
- (I) Monomers having a reactive functional group for example, ethylenically unsaturated carboxylic acids such as maleic acid, itaconic anhydride, succinic anhydride, crotonic acid, etc .: acrylamide, methacrylamide, Amid compounds such as N-methylacrylamide, N-methylolacrylamide, N-butoxymethylacrylamide, N-methylolmethacrylamide, N-methylmethacrylamide, N-butoxymethylmethacrylamide, etc .: Hydroxyl-containing monomers such as hydroxyshethyl acrylate, hydroxyshethyl methacrylate, hydroxypropyl acrylate and hydroxyquinyl methacrylate; glycidyl acrylate and glycidyl methacrylate Epoxy group-containing monomer of: a trimethoxin orchid methacrylate, arturiet Silanol ⁇ containing monomers such as Shishiranme Tak Li rate; aldehyde group-containing mono
- vinyl compounds for example, olefins such as ethylene, propylene, and isobutylene; ethyl vinyl ether (EVE), and hexyl vinyl ether Vinyl ethers such as monoter (CHVE), hydroquineptyl vinyl ether (HBVE), butyl vinyl ether, isobutyl vinyl ether, methyl vinyl ether, and polyquinethylene vinyl ether; polyoxethylenaryl ether, ethylaryl Alkenyls such as ether, hydroxyshethylaryl ether, aryl alcohol and aryl ether: vinyl acetate, vinyl lactate, vinyl butyrate, vinyl bivalate, vinyl benzoate, VEOVA 9, VE0VA10 (manufactured by Shell) Ethylenic unsaturated carboxylic acids such as itaconic anhydride, succinic anhydride, crotonic acid, etc .; Aromatic vinyl compounds such as styrene,
- a low-molecular-weight polymer containing a hydrophilic moiety or a compound containing a ligomer in the molecule may be used. it can.
- the above-mentioned hydrophilic site means a site having a hydrophilic group or a site having a hydrophilic bond, and a site comprising a combination thereof.
- the hydrophilic group may be any of ionic, nonionic, amphoteric, and a combination thereof, but is preferably a nonionic, anionic hydrophilic group.
- a known reactive emulsifier may be used.
- Examples of the acrylate, the monomer having an ethylenically unsaturated bond copolymerizable with the methacrylate, and the reactive emulsifier include, for example, polyethylene glycol methacrylate, polypropylene glycol methacrylate, and methacrylate.
- Toxi Polyethylene glycol methacrylate, polyethylene glycol acrylate, polypropylene glycol acrylate, methoxypolyethylene glycol acrylate, polyethylene glycol acrylate, methoxypolyethylene glycol acrylate, Polyethylene glycol Polypropylene glycol monomethacrylate, Polyethylene glycol Polytetramethylene glycol Monomethacrylate, Polyoxyethylene alkylaryl Nyl ether, polyoxyethylene alkyl aryl phenyl ether sulfate, styrene sulfonate, aryl alkyl sulfonate, polyethylene glycol methacrylate sulfate, alkylaryl sulfosuccinate, bis (polyoxyethylene polycyclic phenylate Ter) Methacrylated sulfate ester salt, polyquineethylene alkylphenyl Examples include ether acrylate, methacryloyloxypolyoxyalkylene sulfate, methacryloyloxyal
- a polymerization method for preparing a homopolymer of the acryl monomer and a copolymer of the acryl monomer and other copolymerizable monomers is not particularly limited, and a conventionally known method, for example, an emulsion polymerization, a suspension polymerization, a bulk polymerization, or the like can be appropriately selected and used. Also, the molecular weight of the polymer after polymerization can be appropriately selected in consideration of its use.
- a polymerization vessel a polymerization method, a polymerization initiator, a polymerization inhibitor, other auxiliary agents, an emulsification auxiliary agent in emulsion polymerization, a surfactant, and other additives used in the polymerization, those conventionally known may be appropriately used. Can be selected and used. In these selections, any conventionally known acrylic resin can be used as long as the acrylic resin to be obtained is appropriate.
- the amount of the acryl resin mixed to constitute the fluorine-containing resin of the present invention is preferably 0 to 90% by weight, particularly preferably 0 to 80% by weight. If the mixing amount is too large, weather resistance and acid rain resistance deteriorate.
- the mixing method is not particularly limited, and a commonly known method can be used.
- the aqueous dispersion has a basic structure in which fluorine-containing resin particles are dispersed in an aqueous medium.
- the aqueous dispersion comprises a fluororesin aqueous dispersion (A-1) obtained by seed polymerization of an acrylic resin, and a fluororesin aqueous dispersion (A-2) not seed-polymerized of an acrylic resin.
- the fluorine-containing resin aqueous dispersion (A-1) is obtained by forming a fluorine-based composite resin with an acryl-based monomer in an aqueous medium in the presence of fluorine-containing resin particles.
- the aqueous medium is not particularly limited, and an additive or a solvent, which will be described in detail later, is added to water.
- the fluororesin constituting the fluororesin particles is a fluororesin (2) which is a copolymer of fluorofluorin. is there.
- the fluorinated olefin copolymer is dispersed in the form of particles in an aqueous medium, and is polymerized by so-called seed polymerization when a fluorine-based composite resin is formed from the acrylic monomer.
- seed polymerization means a reaction of polymerizing with another monomer in an aqueous medium in which resin particles are present.
- the fluorine-based composite resin refers to a seed polymer after the seed polymerization
- the resin particles refer to seed particles in the seed polymerization.
- the fluorofluorin is not particularly limited, and examples thereof include vinylidene fluoride (VdF), tetrafluoroethylene (TFE), chlorofluoroethylene (CTFE), and hexafluoropropylene (HFP). Can be mentioned.
- the copolymer of the above-mentioned fluorofluorin is not particularly limited, and examples thereof include VdFZTFE copolymer, VdFZCTFE copolymer, VdFZHFP copolymer, TFE / CTFE copolymer, TFEZHFP copolymer, and CTFE-HFP copolymer.
- VdF copolymer which is a copolymer of VdF and a fluoro C3 olefin other than VdF is preferable, and furthermore, A copolymer containing 70 mol% or more of VdF is preferred.
- VdF is at least 70 mol%, the compatibility between the seed particles and the polymer comprising an acrylic monomer will be improved.
- the average particle size of the seed particles is the average particle size of the fluorine-based composite resin after seed polymerization. It is closely related to the diameter, and is preferably from 40 to 290 nm so that the average particle diameter of the fluorine-based composite resin after seed polymerization is from 50 to 300 nm.
- the copolymer constituting the seed particles can be obtained by a usual emulsion polymerization method.
- the fluorine-based reactive emulsifier having a hydrophilic portion is present in an amount of 0.01 to 1.0% by weight with respect to water, and the fluorine-based emulsifier is present in an amount of 0 to 1.0% by weight. It can be prepared by emulsion polymerization of the monomer mixture.
- a fluorine-based surfactant relative to water
- CF 2 CF-CF 2 one 0 (CF (CF 3) CF 2 0) " in structure of single CF (CF 3) COOH, that n is 0 to 2 is used.
- the polymerization temperature is from 20 to 120 ° C, preferably from 30 to 70 ° C.
- the polymerization temperature is lower than 20 ° C, the stability of the resulting latex generally becomes low.
- the polymerization temperature is higher than 120 ° C, the polymerization rate tends to be stalled due to chain transfer.
- Polymerization depends on the type of polymer, and is usually applied under a pressure of 1.0 to 50 kgf cm 2 (gauge pressure). The heating is performed for 5 to 100 hours.
- Examples of the fluorine-based emulsifier used for emulsion polymerization of the seed particles include one or a mixture of two or more compounds having a fluorine atom in the structure and having surface activity.
- an acid represented by X (CF 2 ) confrontCOOH (n represents an integer of 6 to 20, X represents F or a hydrogen atom), and an alkali metal salt, an ammonium salt, and an amine salt thereof. or quaternary Anmoniumu salt; Y (CH 2 CF 2) m COOH (.
- m is from 6 1 3 integer
- Y is the F or a chlorine atom) acid and its alkali metal salts, represented by, Anmoniumu Examples thereof include a salt, an ammonium salt, and a quaternary ammonium salt, etc. More specifically, an ammonium salt of perfluorooctanoic acid, an ammonium salt of perfluorononanoic acid, and the like can be given. In addition, known fluorine-based surfactants can also be used.
- a small amount of a nonionic non-fluorinated surfactant can be used in the presence of a fluorine-based surfactant, and specific examples thereof include polyquineethylene alkyl ethers. And polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, polyoxyethylene sorbitan alkyl esters, glycerin esters and derivatives thereof.
- examples of the polyoxyethylene alkyl ethers include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene ethylene ester, polyoxyethylene diphenyl ether, and the like.
- examples of the polyoxyethylene alkyl phenyl ethers include polyoxyethylene nonyl phenyl ether, and polyoxyethylene octyl phenyl ether, and the like. Examples thereof include polyethylene glycol laurate, polyethylene glycol monooleate, and polyethylene glycol monostearate.
- examples of the sorbitan alkyl esters include monolaurate.
- Polyoxyxylene sorbitan monophosphate polyoxyxylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, and the like.
- examples thereof include glyceryl monomyristate, glyceryl monostearate, glyceryl monooleate and the like.
- polyoxyethylene alkylamine polyoxyethylene alkylphenyl-formaldehyde condensate
- polyoxyethylene alkyl ether phosphate Particularly preferred are polyquinethylene alkyl ethers and polyoxyethylene alkyl esters, which have a value of 11 to 18 and specifically, polyoxyethylene lauryl ether ( EO: 5 to 20. EO represents the number of ethylene oxide units.) And polyethylene glycol monostearate (EO: 6 to 10).
- the acrylic monomer according to the present invention is not particularly limited, and examples thereof include an alkyl acrylate having 1 to 18 carbon atoms and an alkyl methacrylate having an alkyl group having 1 to 18 carbon atoms. Esters and monomers having an ethylenically unsaturated bond copolymerizable therewith can be exemplified.
- alkyl acrylate having 1 to 18 carbon atoms in the alkyl group examples include methyl acrylate, ethyl acrylate, n-propyl acrylate, i-propyl acrylate, n-butyl acrylate, and acrylyl. I-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, n-hexyl acrylate, t-butylcyclohexyl acrylate, stearyl acrylate, lauryl acrylate, etc. Can be mentioned.
- alkyl methacrylate having 1 to 18 carbon atoms in the alkyl group examples include methyl methacrylate, methyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, n-butyl methacrylate, I-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, n-hexyl methacrylate, t-butylcyclohexyl methacrylate, stearyl methacrylate, lauryl methacrylate, etc. be able to.
- polyfunctional monomers such as ethylene glycol dimethacrylate and propylene glycol dimethacrylate can be copolymerized.
- monomer having an ethylenically unsaturated bond copolymerizable with the above acrylate or methacrylate include the following (I) and the following (II).
- (I) Monomers having a reactive functional group for example, ethylenically unsaturated carboxylic acids such as maleic acid, itaconic anhydride, succinic anhydride, crotonic acid: acrylamide, methacrylamide, N— Amines such as methylacrylamide, N-methylolacrylamide, N-butoxymethylacrylamide, N-methylolmethacrylamide, N-methylmethacrylamide, N-butoxymethylmethacrylamide, etc.
- carboxylic acids such as maleic acid, itaconic anhydride, succinic anhydride, crotonic acid: acrylamide, methacrylamide, N— Amines such as methylacrylamide, N-methylolacrylamide, N-butoxymethylacrylamide, N-methylolmethacrylamide, N-methylmethacrylamide, N-butoxymethylmethacrylamide, etc.
- Hydroxyl compounds such as hydroxyshethyl acrylate, hydroxyshethyl methacrylate, hydroxypropyl acrylate, and hydroxypropyl methacrylate; Monomers containing epoxy groups such as glycidyl acrylate and glycidyl methacrylate Body; arti-tritoxin orchid methacrylate, a-trietoxin silane methacrylate Silanol group-containing monomers such as acrylates; aldehyde group-containing monomers such as acrolein; caprolactone-modified hydroxyacrylate, and force-prolactone-modified hydroxymethacrylate.
- vinyl compounds for example, ⁇ -olefins such as ethylene, propylene, and isobutylene: ethyl vinyl ether (EVE), cyclohexyl vinyl ether (CHVE), hydroxybutyl vinyl ether (HBVE), butyl vinyl Vinyl ethers such as butyl ether, isobutyl vinyl ether, methyl vinyl ether, and polyoxyethylene vinyl ether; alkenyls such as polyoxetylene aryl ether, ethylaryl ether, hydroxyxylaryl ether, aryl alcohol, and aryl ether; acetic acid Vinyl esters such as vinyl, vinyl lactate, vinyl butyrate, vinyl vivalate, vinyl benzoate, VEOVA 9, VE0VA10 (manufactured by Siell): dianhydride, succinic anhydride, crotonic acid, etc.
- EVE ethyl vinyl ether
- CHVE cyclohexyl vinyl ether
- a low-molecular-weight polymer containing a hydrophilic site or a compound containing a oligomer in the molecule can also be used.
- the hydrophilic site It means a site having a hydrophilic group or a site having a hydrophilic bond, and a site composed of a combination thereof.
- the hydrophilic group may be any of ionic, nonionic, amphoteric, and a combination thereof, but is preferably a nonionic, anionic hydrophilic group. Further, a known reactive emulsifier may be used.
- Examples of the acrylate, the monomer having an ethylenically unsaturated bond copolymerizable with the methacrylate, and the reactive emulsifier include, for example, polyethylene glycol methacrylate, polypropylene glycol methacrylate, and methoxy polyethylene glycol.
- the acrylic monomer when the acryl-based monomer is subjected to side polymerization in the presence of the fluorine-containing resin particles, first, the acrylic monomer swells into the fluorine-containing resin, and at this time, the acryl-based monomer is swollen. An aqueous dispersion in which the monomers are uniformly dissolved is obtained. Thereafter, by adding a polymerization initiator, the acrylic monomer is polymerized to form compatible solution particles with entangled molecular chains. When the acryl-based monomer is polyfunctional, it can form an interpenetrating network (IPN). Examples of the polyfunctional acryl-based monomer include monoglycol dimethacrylate and diglycol dimethacrylate.
- IPN interpenetrating network
- the above-mentioned seed polymerization of the acrylic monomer is carried out by a known method, for example, a method in which the whole amount of the acrylic monomer is charged into the reaction system in the presence of the fluororesin particles, and the acrylic monomer is used. Can be carried out by a method in which a part of the above is charged and then the remaining is continuously or dividedly charged, or a method in which the entire amount of the acryl monomer is continuously charged.
- the polymerization conditions for the seed polymerization are the same as those for ordinary emulsion polymerization.For example, a surfactant, a polymerization initiator, a chain transfer agent, and, in some cases, an aqueous medium containing fluororesin particles are used. Polymerization can be carried out by adding a chelating agent, a pH adjuster, a solvent and the like, and performing a reaction at a temperature of 10 to 90 ° C. for 0.5 to 6 hours.
- anionic, nonionic or a combination of anionic and nonionic can be used, and in some cases, an amphoteric surfactant can also be used.
- anionic surfactant examples include higher alcohol sulfate, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, dialkyl succinate, sodium sulfonate, and alkyl diphenyl ester.
- hydrocarbon-based anionic surfactants such as sodium salt of terdisulfonic acid
- fluorinated anionic surfactants such as fluoroalkyl carboxylate, fluoroalkyl sulfonate, and fluoroalkyl sulfate are also exemplified. be able to.
- nonionic surfactant examples include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl esters, polyoxyethylene alkyl phenyl esters, and sorbitan alkyl esters. , Glycerin esters and derivatives thereof.
- amphoteric surfactant examples include lauryl betaine.
- a so-called reactive emulsifier that can be copolymerized with an acrylic monomer can be used. Further, such a reactive emulsifier can be used in combination with the emulsifier.
- the amount of the surfactant to be used is usually 0.05 to 5.0 parts by weight per 100 parts by weight of the acrylic monomer.
- the polymerization initiator used in the seed polymerization is not particularly limited as long as it generates a radical that can be subjected to a free radical reaction in an aqueous medium at a temperature of 20 to 90 ° C., and in some cases, It is also possible to use in combination with a reducing agent.
- water-soluble polymerization initiators include persulfates and hydrogen peroxide, and reducing agents such as sodium pyrobisulfite, sodium bisulfite, sodium l-ascorbate, and Rongalite. Can be mentioned.
- the oil-soluble polymerization initiator include diisopropyl peroxydicarbonate (IPP), benzoyl peroxide, dibutyl peroxide, azobisisobutyronitrile (AIBN) and the like.
- the amount of the polymerization initiator to be used is generally 0.05 to 2.0 parts by weight per 100 parts by weight of the acrylic monomer.
- Examples of the chain transfer agent used in the seed polymerization include: halogenated hydrocarbons such as black form, carbon tetrachloride and the like; n-dodecyl mercaptan, tert-dodecyl mercaptan, n-butyl octyl mercaptan and the like. Mercaptans and the like can be mentioned.
- the amount of the chain transfer agent to be used is usually 0 to 5.0 parts by weight per 100 parts by weight of the acrylic monomer.
- the solvent used in the above seed polymerization is used within a range that does not impair workability, disaster prevention safety, environmental safety, and production safety, for example, 20% by weight or less.
- Addition of such a solvent may improve the swellability of the acrylic monomer in the fluororesin particles.
- the particle diameter of the fluorinated resin particles of the present invention in the aqueous dispersion is preferably 50 to 300 nm. More preferably, it is 50 to 200 nm.
- the particle size is less than 5 O nm, the viscosity of the fluororesin aqueous dispersion significantly increases at a concentration of 30% or more, which is a practical range, which hinders the work of coating. .
- the particle size exceeds 300 nm, the sedimentation stability of the obtained aqueous dispersion becomes poor, and even if the resin composition has the same composition, the minimum film formation temperature of the aqueous dispersion is increased. .
- the aqueous dispersion according to the present invention comprises an aqueous dispersion (A-2).
- the aqueous dispersion (A-2) is an aqueous dispersion in which an acrylic resin is not subjected to seed polymerization.
- the aqueous dispersion (A-2) has a basic structure in which fluorinated resin particles are dispersed in an aqueous medium.
- the fluorinated resin constituting the fluorinated resin particles is a fluorinated resin (2) composed of a copolymer of fluorinated olefin or a copolymer of a fluorinated olefin and a vinyl monomer. (1).
- the fluororesin (2) comprising the fluorofluorinated copolymer is the same as that described in the section of the aqueous dispersion (A-1).
- the fluorine-containing resin (1) comprising a copolymer of fluorofluorin and a vinyl monomer is preferably as follows.
- fluorofluorin examples include vinyl fluoride (VF), vinylidene fluoride (Vd F), tetrafluoroethylene (TFE), and black trifluoroethylene (CTF E). ), Hexafluoropropylene (HFP), trifluoroethylene (TrFE), and other fluorocarbon olefins having about 2 to 4 carbon atoms.
- vinyl monomer examples include ethylene, propylene, isobutylene and other olefins; ethyl vinyl ether (EVE), cyclohexyl vinyl ether (CHVE), hydroxybutyl vinyl ether (HBVE), and butyl vinyl Vinyl ethers such as ether, isobutyl vinyl ether, methyl vinyl ether, and polyoxyethylene vinyl ether; alkenyls such as polyoxyethylene aryl ether, ethylaryl ether, hydroxyxylaryl ether, aryl alcohol, and aryl ether: Vinyl acetates such as vinyl acetate, vinyl lactate, vinyl butyrate, vinyl pivalate, vinyl benzoate, VEOVA 9 (manufactured by Siell), VEOVA 10 (manufactured by Siell), itaconic anhydride, succinic anhydride, crotone Ethylenic unsaturated carbon such as acid Bonic acids and the like can be mentioned.
- Fluorine-containing resin
- the aqueous dispersion (A-2) is obtained, for example, by polymerizing the fluororesin constituting the fluororesin particles in a solvent or the like, and then dispersing in water in the presence of an emulsifier to distill off the solvent.
- Phase conversion method, and a method in which emulsion polymerization of the fluorinated resin constituting the above-mentioned fluorinated resin particles is carried out in an aqueous medium examples include an aqueous medium in order to reduce the solvent and simplify the process.
- Preferred is a method in which emulsion polymerization is performed.
- the above emulsion polymerization can be carried out in the same manner as the usual emulsion polymerization, for example, in a closed container, in an aqueous medium, a surfactant, a polymerization initiator, a chain transfer agent, and in some cases, a chelating agent.
- a surfactant such as fluorinated olefins and monomers copolymerizable with fluorinated olefins at a temperature of 10 to 90 ° C for 0.5 to 40 hours in the presence of a pH adjuster and a solvent.
- anionic, nonionic or a combination of anionic and nonionic can be used, and in some cases, an amphoteric surfactant can also be used.
- anionic surfactant examples include higher alcohol sulfate, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, sodium dialkyl succinate sulfonate, and alkyl diphenyl ether sulfonic acid.
- hydrocarbon-based anionic surfactants such as sodium acid salts
- fluorinated anionic surfactants such as fluoroalkylcarboxylates, fluoroalkylsulfonates, and fluoroalkylsulfates Agents and the like.
- nonionic surfactant examples include polyoxyethylene alkyl ethers, polyoxyethylene ethylene alkyl ethers, and polyoxyethylene. Alkyl esters, polyoxyethylene alkyl phenyl esters, sorbitan alkyl esters, glycerin esters and derivatives thereof.
- amphoteric surfactant examples include lauryl betaine.
- a so-called reactive emulsifier can be used, and further, such a reactive emulsifier and the above-mentioned emulsifier can be used in combination.
- the polymerization initiator used in the emulsion polymerization is not particularly limited as long as it generates a radical capable of being subjected to a free radical reaction in an aqueous medium between 10 and 90, and in some cases, a reducing agent It is also possible to use in combination with.
- water-soluble polymerization initiators include persulfates and hydrogen peroxide, and reducing agents such as sodium pyrobisulfite, sodium bisulfite, sodium L-ascorbinate, and Rongalite. Can be mentioned.
- the oil-soluble polymerization initiator include diisopropyl peroxydicarbonate (IPP), benzoyl peroxide, dibutyl peroxide, and azobisisobutyronitrile (AIBN).
- chain transfer agent used in the above emulsion polymerization examples include: halogenated hydrocarbons such as black form and carbon tetrachloride; and mercaptans such as n-dodecylmercaptan, tert-dodecylmercaptan, and n-octylmercaptan. And the like.
- the solvent used in the above emulsion polymerization is used within a range that does not impair workability, disaster prevention safety, environmental safety, and manufacturing safety, for example, 20% by weight or less.
- the fluorine-containing resin of the present invention is a mixture of a fluorine-containing resin
- any of the aqueous dispersions may be used.
- a mixture with another resin, preferably an acrylic resin is also one of the fluorine-containing resins of the present invention.
- the resin solution is a solution in which the fluororesin of the present invention is dissolved in an organic solvent, and the fluororesin is an organic solvent-soluble fluororesin.
- the above-mentioned fluorine-containing resin soluble in an organic solvent includes a fluorine-containing resin (1) composed of a copolymer of fluorofluorin and a vinyl monomer as described above, and a fluorine-containing resin (2) that is a copolymer of fluorofluorin. ) Is a polymer which can be dissolved in an organic solvent, among fluororesins (3) comprising a homopolymer of fluoroolefin.
- a fluororefin copolymer As the organic solvent-soluble fluororesin, preferably, for example, a fluororefin copolymer can be exemplified.
- the above-mentioned fluororefine includes Vd F, TFE and CTFE.
- Examples of the copolymer of fluorofluorin include VdFZTFE copolymer, VdFZCTFE copolymer, TFE / CTFE copolymer, and VdF / TFE-no-CTFE copolymer.
- organic solvent-soluble fluorine-containing resin examples include, in addition to those described above, homopolymers of fluororefin, copolymers of fluororefin other than those described above, and copolymers of fluororefin and other monomers. be able to.
- VdF homopolymer TrFE homopolymer, TFE homopolymer, CTFE homopolymer, HFP homopolymer, VdFZ Tr FE copolymer , VdFZVF copolymer, VdFZHFP copolymer, TFEZ Tr FE copolymer, Ding? ⁇ copolymer, 11 11 copolymer, CTFE ZTrFE copolymer, CTF E_ / VF copolymer, CTFEFP copolymer, V d FZT F EZT r FE copolymer, V d F ZT FEZVF copolymer, VdFZT FEZHFP copolymer, V dFC TF EZT r r FE copolymer, VdFZCTF EZVF copolymer, VdF / CTFEZHFP copolymer, TFE-no CTFEZT r FE copolymer, TFE-no CTFEZT r
- VdF-based copolymer containing VdF as an essential monomer that is, a copolymer of VdF and a monomer other than VdF is preferable.
- those containing 50 to 90 mol% of VdF, 5 to 30 mol% of TFE, 5 to 30 mol% of CTFE, and 50 to 90 mol% of VdF %, TFE 5 to 30 mol%, and HFP 5 to 30 mol% are more preferable.
- the above-mentioned organic solvent-soluble fluororesin can be prepared by polymerizing the above-mentioned monomer by a usual polymerization method.
- a polymerization method include, for example, the method described in detail in the section of the above-mentioned polymerization method for the fluororesin constituting the side particles in the section of the fluororesin aqueous dispersion obtained by side polymerization of the acryl resin. Can be mentioned.
- the organic solvent is not particularly limited, but from the viewpoint of solubility, ketones or esters having a boiling point of about 60 to 250 ° C. are particularly preferable. For example, acetone, methyl ethyl ketone, methyl i-butyl ketone And cyclohexanone, ethyl acetate, n-butyl acetate, methyl acetate methyl acetate and the like. These can be used alone or in combination of two or more.
- examples of the above-mentioned organic solvent include tetrahydrofuran (THF), dimethylformamide (DMF), and the like.
- aromatic organic compounds such as toluene and xylene, and alcohols Etc.
- organic solvents can dissolve the above-mentioned organic solvent-soluble fluororesin well and can obtain a composition in a wide concentration range from a low concentration to a high concentration, and have excellent durability as a durable water repellent. It will be. This concludes the description of the “resin solution” of the present invention.
- the fluorine-containing resin of the present invention may be a mixture of a fluorine-containing resin and another resin
- the “resin solution” described above is used as one of the fluorine-containing resins of the present invention.
- any of the resin solutions, in addition to the resin solution, a mixture with another resin, preferably an acrylic resin, is one of the fluorine-containing resins of the present invention.
- the fluorine-containing resin (1) composed of a copolymer of fluorofluorin and a vinyl monomer
- the fluorinated resin (1) comprising a copolymer of a fluorinated olefin and a vinyl monomer, more preferably fluorinated olefin and a specific vinyl-based monomer It is a fluororesin (1a) composed of a copolymer with a monomer.
- the fluororefin constituting the copolymer of the above fluororefin and a specific vinyl monomer has the formula:
- X represents a hydrogen atom, a fluorine atom, a chlorine atom or a trifluoromethyl group.
- fluoroolefins include TFE, CTFE, TrFE, and HFP.
- the durable water repellent of the present invention is chlorine-free and more durable and tough. TFE is preferred from the viewpoint that a stable coating film can be formed and that the durable water repellent of the present invention has an improved fluorine content and improved water repellency.
- the specific vinyl monomer which is copolymerized with the above-mentioned fluorinated refine is (i) 3-methyl- ⁇ -alkyl-substituted- ⁇ -refined olefin, (ii) vinyl group-containing ether, and (iii) ) Vinyl group-containing ester, and one of these (i), (ii) and (iii) is copolymerized with the above fluororefin to constitute the above-mentioned fluororesin (3).
- these may be a carboxyl group-containing vinyl monomer or a curing reactive site such as a hydroxyl group, an epoxy group or a silyl group.
- the monomer be a vinyl monomer having a carboxyl group or a vinyl monomer having a carboxyl group.
- Hydroxy acid , Epoxy ⁇ it is preferred to include vinyl monomers having a curing reactive site, such as a silyl group as specific vinyl monomers to be copolymerized with the Furuoroorefi down.
- R represents an alkyl group having 1 to 8 carbon atoms.
- Such a substance is not particularly limited, and examples thereof include isobutylene, 2-methyl-1-butene, 2-methyl-11-pentene, and 2-methyl-11-hexene. Of these, isobutylene is preferred. preferable.
- the content ratio of the above-mentioned (i) ⁇ -metholene; 8-alkyl-substituted ⁇ -olefin in the copolymer of the above-mentioned fluororefin and a specific vinyl monomer is 5 to 45% by weight. Is preferred. If it is less than 5% by weight, the weather resistance of the durable water repellent of the present invention will be poor, and if it exceeds 45% by weight, it will be difficult to prepare the copolymer.
- R represents OR ′ ′ or CH 2 OR ′′ (IT ′ represents an alkyl group having 1 to 8 carbon atoms.).)
- IT ′ represents an alkyl group having 1 to 8 carbon atoms.
- R 11 is an alkyl group having a hydroxyl group
- the hydroxyl group functions as a reaction site with a curing agent described later. This is a good thing.
- vinyl group-containing ether is not particularly limited, and examples thereof include ethyl vinyl ether, butyl vinyl ether, hexyl vinyl ether, cyclohexyl vinyl ether, 2-hydroxyquinethyl vinyl ether, and 3-hydroxypyruvyl vinyl ether.
- the content ratio of the above-mentioned (ii) vinyl group-containing ether in the copolymer of the above-mentioned fluorinated olefin and a specific vinyl monomer is preferably from 1 to 45% by weight. If the amount is less than 1% by weight, the curability of the durable water repellent of the present invention is inferior. If the amount exceeds 45% by weight, gelation easily occurs and storage stability is inferior, and the obtained coating film becomes brittle. You. The content is more preferably 1 to 30% by weight, and even more preferably 5 to 15% by weight. — (Iii) the vinyl group-containing ester has the formula:
- R 2 ′ represents a hydrogen atom or COOR 4 ′;
- R 31 represents COOR 41 or OC ⁇ ;
- R 4 ′ is an alkyl group having 1 to 10 carbon atoms; 1 0 cycloalkyl group, Furuoroarukiru group of from 1 to 1 0 carbon atoms, or, optionally substituted by Al kill group having 1 to 8 carbon atoms off
- the vinyl carboxylate is not particularly restricted but includes, for example, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl isobutyrate, vinyl vivalate, vinyl propylate, vinyl versatate, vinyl laurate, vinyl stearate, Examples include vinyl benzoate, p-t-butyl vinyl benzoate, vinyl salicylate, vinyl cyclohexane carboxylate, vinyl hexafluoropropionate, and vinyl acetate.
- the maleic diester or maleic diester is not particularly restricted but includes, for example, dimethyl maleate, getyl maleate, dipropyl maleate, dibutyl maleate, diphenyl maleate, dibenzyl maleate, ditrityl maleate, maleate.
- Examples thereof include dibenzyl acid, ditrityl fumarate, ditrifluoromethyl fumarate, ditrifluoroethyl fumarate, and dihexafluoropropyl fumarate.
- the content ratio of the above (iii) vinyl group-containing ester in the copolymer of the above-mentioned fluorofluorin and a specific vinyl monomer is preferably from 1 to 45% by weight. If it is less than 1% by weight, solubility and compatibility are poor, the glass transition temperature is low, and Exceeding the amount% causes deterioration of weather resistance. More preferably, it is 5 to 40% by weight, and still more preferably, 10 to 30% by weight.
- the carboxyl group-containing vinyl monomer described above as a specific vinyl monomer other than the above (i), (ii) and (iii) can be used for dispersibility, curing reactivity, and curing of the fluorine-containing resin of the present invention. Improves the adhesion of the durable water repellent to the substrate.
- the carboxy group-containing vinyl monomer include those derived from crotonic acid, maleic acid, acrylic acid, methacrylic acid, itaconic acid, vinyl acetic acid, and the like.
- the ratio of the carboxyl group-containing vinyl monomer to the total vinyl monomer is preferably from 0.01 to 10 mol%. If the amount is too small, the compatibility with the curing agent decreases, and if the amount is too large, the water resistance decreases.
- the curing reaction site may be a hydroxyl group, an epoxy group or a silyl group.
- the vinyl monomer in which the curing reaction site is a hydroxyl group include the hydroxyalkyl vinyl ethers and the hydroxyquin alkyl vinyl esters already described in the above section (ii).
- vinyl monomer having a curing reaction site examples include, for example, epoxides described in JP-A-2-232250 and JP-A2-223251.
- examples thereof include quin group-containing vinyl monomers, and silyl group-containing vinyl monomers described in JP-A-61-141133.
- epoxy group-containing vinyl monomer examples include epoxyvinyl and epoxyvinylether represented by the following general formula.
- R 53 is, - CH 2 - 0- R 55 , -CH 2 -0-R 55 -C-, - OR 35 -
- R 55 is an alkylene group
- R M is
- silyl group-containing vinyl monomer examples include, for example, vinyl trimethoxy silane, vinyl triethoxyquin silane, vinyl tripropoxy silane, vinyl methyl dimethoxy silane, vinyl dimethyl methoxy silane, vinyl methyl ethoxy silane, vinyl tris (/ 3 —Methoxy) silane, trimethoxysilylethyl vinyl ether, triethoxysilylethyl vinyl ether, trimethoxysilyl butyl vinyl ether, trimethoxysilyl ethyl vinyl ether, trimethoxysilylethyl vinyl ether Toxisilyl propyl vinyl ether, triethoxy silyl propyl vinyl ether, vinyl triisopropenyloxy silane, vinyl methyl diisopropionyloxy Replacement paper (Rule 26) Shinran, triisopropenyloxysilyl propyl vinyl ether, triisopropenyloxysilylpropyl vinyl ether, triisoprop
- the proportion of the vinyl monomer having the curing reaction site in the total vinyl monomer is not particularly limited, but is preferably 5 to 15 mol%. If the amount is too small, the curability will be insufficient. If the amount is too large, gelation tends to occur, and storage stability will deteriorate.
- the copolymer of the fluororefin and the specific vinyl monomer can be prepared by polymerizing the above monomer by a usual polymerization method.
- a polymerization method for example, in the section of the above-mentioned polymerization method of the fluorine-containing resin constituting the seed particles in the section of the aqueous dispersion of the fluorine-containing resin obtained by seed-polymerizing the acrylic resin (A-1). The method described in detail can be used.
- the fluorine-containing resin of the present invention comprises an aqueous dispersion or is dissolved in a solvent.
- the fluorine-containing resin of the present invention is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin.
- the other resin constituting the fluorine-containing resin of the present invention is an acrylic resin. Is preferred.
- the fluorine-containing resin constituting the fluorine-containing resin of the present invention is a copolymer of a fluoroolefin and a vinyl monomer. Also in this case, the fluorine-containing resin is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin (particularly, an acryl resin).
- the fluorine-containing resin constituting the fluorine-containing resin of the present invention is a fluorofluorinated copolymer.
- the fluorine-containing resin is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin (particularly, an acrylic resin).
- the copolymer of fluorofluorin is preferably a copolymer of vinylidenefluoride and a fluorofluorin other than vinylidenefluoride.
- the fluorine-containing resin is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin (particularly, an acrylic resin).
- the form of the fluorine-containing resin is preferably an aqueous dispersion.
- the fluorine-containing resin is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin (particularly, an acrylic resin).
- the fluorine-containing resin is preferably a fluorine-containing resin obtained by seed-polymerizing an acrylic resin. Also in this case, the fluorine-containing resin is made of a fluorine-containing resin or a mixture of a fluorine-containing resin and another resin (particularly, an acrylic resin).
- the curing reaction site may be optionally used for the purpose of improving the durability and solvent resistance of a coating film formed by the durable water repellent of the present invention.
- a reactive curing agent may be added.
- the curing agent is not particularly limited, and examples thereof include an isocyanate-based curing agent and a melamine-based curing agent.
- the repellent is 50 to 99 parts by weight based on 100 parts by weight of the total solid content. If the amount is less than 50 parts by weight, sufficient water repellency, natural woody texture of wood, and the unique texture of cloth cannot be exhibited, and if it exceeds 99 parts by weight, the durability will be poor. More preferably, it is 60 to 97 parts by weight, and still more preferably 70 to 95 parts by weight.
- an additive may be further appropriately contained.
- additives are not particularly restricted but include, for example, pigments, preservatives, antibacterial agents, fungicides, flame retardants, surface conditioners, curing catalysts, viscosity adjusters, reppelling agents, ultraviolet absorbers, leather
- Known additives such as a deburr, a dispersant, an antifoaming agent, an organic gay compound, and the like can be used. The amount of these additives is not particularly limited. Can be adopted.
- the durable water repellent of the present invention can simultaneously exert the effect as a coating film for preservation and protection. it can . Further, depending on the type of additive, it can be applied as an agent for preventing water absorption, an agent for preventing muddy water pollution, and the like.
- a usual coating method can be appropriately employed, and examples thereof include spray coating and brush coating.
- the target substrate is not particularly limited, but is preferably a substrate containing water and requiring strong durability by a water repellent to be applied. Since the durable water repellent of the present invention has excellent water repellency and durability, for example, it is required to maintain water repellency under an ultraviolet irradiation environment, such as tents, curtains, Suitable for roll blinds, fabric for umbrellas, etc .; wood for benches, floors, walls, etc .; concrete for buildings, etc. However, the application of the durable water repellent of the present invention is not limited to these. Of course, the durable water repellent can also be used to increase the water repellency of other substrates.
- the durable water repellent of the present invention is also effective against acid rain, it is also useful for substrates which are used outdoors and are likely to be exposed to wind and rain.
- a housing exterior wall, a building exterior wall, a window glass, an automobile body and the like may be mentioned.
- a coated article formed by applying the durable water repellent of the present invention is also one of the present invention.
- various articles can be mentioned for the above-mentioned reasons.
- articles having a porous surface can be mentioned.
- examples of such a porous surface include concrete, wood, cloth, and the like, and more preferably, concrete.
- the above concrete is, for example, a concrete already constructed.
- a method of applying the durable water repellent of the present invention to the surface of the structure can also be used.
- the concrete coated with the durable water repellent of the present invention has an excellent durable water repellent effect, it is useful in fields where these properties can be positively utilized.
- water treatment facilities such as revetment blocks, cooling guideways, aquaculture tanks, and water storage tanks that are always in contact with water; nuclear power generation facilities where durability is extremely important; Sidewalks, parks, amusement parks, school playgrounds and swimming pools and their paving blocks to which gums and other sticky substances are likely to adhere; , Building pillars, roof structures, mineral oil storage tanks, prefabricated garages, prefabricated houses, concrete tiles, U-shaped civil engineering stones, and other molded articles such as vehicle support floors. It can be used for applications such as covering these surfaces.
- Unitidyne TG-652 (Daikin Industries), Unitidin TG-4101 (Dikin Industries), Unitidin TG-1010 (Daikin Industries), ethyl ethoxysilane (Tables 1 and 2) 2 "EES”), Titosilane (Toyo Ink Manufacturing Co., Ltd.) was used.
- copolymer aqueous dispersion S a copolymer aqueous dispersion S
- the mixture was heated in a water bath with stirring, and when the tank temperature reached 80 ° C, 13.0 g of methyl methacrylate (MMA), 3.5 g of butyl acrylate (BA), and polioche Tylene methacrylate (P0E MA, manufactured by Shin-Nakamura Chemical Co., Ltd., trade name: M90G) 2.2 g of the mixed monomer was emulsified with a 0.5% aqueous solution of an alkylarylsulfosuccinate alkali salt. This emulsion was added dropwise over 1 hour. Immediately thereafter, 1 milliliter of a 2% aqueous solution of ammonium persulfate was added to start the reaction.
- MMA methyl methacrylate
- BA butyl acrylate
- P0E MA polioche Tylene methacrylate
- the fluorinated resin obtained by drying and washing the “copolymer aqueous dispersion S” obtained in Synthesis Example 1 and a homopolymer of methyl methacrylate having a number average molecular weight of 1500 are solidified.
- the mixture was dissolved and mixed in butyl acetate so that the weight ratio of the components became 70:30 to obtain a mixture of a fluorine-containing resin and an acrylic resin. This was designated as “A” for a fluorine-containing resin and used in Examples.
- the emulsion resin S obtained in Synthesis Example 2 was made to contain 5% by weight of a gelatin adipate as a film-forming aid at a solid content ratio to obtain an aqueous resin dispersion. This was designated as "B" for fluorine-containing resin and used in Examples.
- Acrylic A—801 a hydroxyl group-containing acrylyl resin dissolved in an organic solvent (Dainippon Ink and Chemicals, Inc.), was replaced with a curing agent (Nippon Polyurethane Co., Ltd.)
- the mixture was mixed with Coronate HX) to adjust the ratio of hydroxyl group to isocyanate group (hydroxyl group / isocyanate group) to 11.
- This was designated as “E” for a fluorine-containing resin and used in Examples. Although this is not a fluorine-containing resin, it was used in Comparative Examples as an alternative to the fluorine-containing resin, and is therefore referred to as “fluorine-containing resin E” in Tables 1 and 2 for convenience.
- a four-necked flask was charged with 3 parts by weight of sodium lauryl sulfonate and 160 parts by weight of ion-exchanged water, heated to 60 ° C in a nitrogen stream, and then 0.5 parts by weight of ammonium persulfate and sulfurous acid. 0.2 parts by weight of sodium hydrogen were added, and 100 parts by weight of a mixture of methyl methacrylate Z, n-butyl methacrylate and n-butyl dimethacrylate 66/3/30/7 (mole%) was added over 3 hours. It was dropped. The temperature during the dropping reaction was controlled at 60 to 70 ° C.
- Aqueous resin dispersion was obtained by adding 5% by weight of getyl adipate as a film-forming aid to the “acrylemaldione” obtained in Synthesis Example 8 at a solid content ratio.
- This was designated as “F” for a fluorine-containing resin and used in Examples. Although this is not a fluorine-containing resin, it was used in Comparative Examples as a substitute for the fluorine-containing resin, and is referred to as “fluorine-containing resin F” in Tables 1 and 2 for convenience. Examples and comparative examples
- the durable water repellent of the present invention was prepared by mixing the repellent and the fluorine-containing resin at the ratios (parts by solids) shown in Tables 1 and 2.
- the surface of the substrate was evaluated by scratching.
- the coated plate to be tested was immersed in 2% sulfuric acid for 7 days, and the appearance of the coated surface was visually observed to determine whether there was any change.
- the durable water repellent of the present invention has the above-mentioned constitution, it has excellent water repellency, and the water repellency lasts for a long period of time.
- the porous surface of concrete, wood, cloth, etc. It has an excellent durability and water repellency to a base material having, and can maintain the natural woody texture and unique texture of concrete, wood and cloth.
Description
Claims
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EP97912484A EP0939105A4 (en) | 1996-11-18 | 1997-11-18 | TOUGH WATERPROOF AND COATED ARTICLES |
JP52346298A JP3512200B2 (ja) | 1996-11-18 | 1997-11-18 | 耐久性撥水剤及び塗装物品 |
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US10/097,303 Division US6784239B2 (en) | 1996-11-18 | 2002-03-15 | Durable water repellent and coated articles |
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EP (1) | EP0939105A4 (ja) |
JP (1) | JP3512200B2 (ja) |
KR (1) | KR20000053358A (ja) |
CN (1) | CN1131279C (ja) |
WO (1) | WO1998022530A1 (ja) |
Cited By (7)
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JP2002114941A (ja) * | 2000-07-31 | 2002-04-16 | Nippon Paint Co Ltd | 撥水性塗料用硬化性樹脂組成物及び塗装物 |
WO2006038493A1 (ja) * | 2004-10-06 | 2006-04-13 | Daikin Industries, Ltd. | 含フッ素撥水撥油剤組成物 |
JP2012241073A (ja) * | 2011-05-18 | 2012-12-10 | Kansai Paint Co Ltd | 熱交換器フィン材用の着霜抑制処理組成物 |
WO2014034053A1 (ja) * | 2012-08-27 | 2014-03-06 | 日東電工株式会社 | 撥油性が付与された通気フィルタ |
CN104213411A (zh) * | 2014-09-18 | 2014-12-17 | 常熟市洁韵巾被有限公司 | 帆布的生产方法 |
WO2017026418A1 (ja) * | 2015-08-07 | 2017-02-16 | ダイキン工業株式会社 | 塗料及び積層体 |
WO2021187520A1 (ja) * | 2020-03-17 | 2021-09-23 | ダウ・東レ株式会社 | プレキャストコンクリート成形体 |
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JP3778168B2 (ja) | 2002-12-24 | 2006-05-24 | ダイキン工業株式会社 | 皮革用塗料組成物、塗装方法および塗装皮革 |
WO2005037880A1 (ja) * | 2003-10-22 | 2005-04-28 | Daikin Industries, Ltd. | テトラフルオロエチレン重合体水性分散液、その製造方法、テトラフルオロエチレン重合体粉末及びテトラフルオロエチレン重合体成形体 |
KR101321838B1 (ko) * | 2005-07-20 | 2013-10-25 | 가부시키가이샤 아데카 | 알칼리현상형 감광성 착색조성물 |
GB2467755A (en) * | 2009-02-12 | 2010-08-18 | 3M Innovative Properties Co | Leather coated with a fluorinated substance |
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KR102156003B1 (ko) * | 2012-09-24 | 2020-09-15 | 에이지씨 가부시키가이샤 | 발잉크성 조성물, 네거티브형 감광성 수지 조성물, 경화막, 격벽, 및 광학 소자 |
CN103642022B (zh) * | 2013-11-04 | 2015-12-30 | 西南石油大学 | 一种带醚链的有机-无机杂化聚合物及其制备方法 |
CN103788783B (zh) * | 2014-02-10 | 2016-02-24 | 广东华兹卜化学工业有限公司 | 一种高性能水性氟碳漆 |
JP6853953B2 (ja) * | 2017-03-27 | 2021-04-07 | 日油株式会社 | 剥離剤組成物、剥離層、および剥離性物品 |
KR101987700B1 (ko) * | 2017-07-19 | 2019-06-11 | 엘지전자 주식회사 | 열교환기의 윤활층 형성 방법 |
CN115260846B (zh) * | 2022-08-19 | 2023-08-22 | 江西中氟化学材料科技股份有限公司 | 一种形成涂层的改性氟树脂水性分散液及其制备方法 |
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- 1997-11-18 JP JP52346298A patent/JP3512200B2/ja not_active Expired - Fee Related
- 1997-11-18 WO PCT/JP1997/004178 patent/WO1998022530A1/ja not_active Application Discontinuation
- 1997-11-18 EP EP97912484A patent/EP0939105A4/en not_active Withdrawn
- 1997-11-18 KR KR1019990704386A patent/KR20000053358A/ko not_active Application Discontinuation
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JPH02140255A (ja) * | 1988-11-21 | 1990-05-29 | Asahi Glass Co Ltd | 被覆用組成物 |
JPH0433942A (ja) * | 1990-05-29 | 1992-02-05 | Dainippon Ink & Chem Inc | 水性塗料組成物 |
JPH0485369A (ja) * | 1990-07-26 | 1992-03-18 | Central Glass Co Ltd | 滑雪性および着氷防止性に優れた被覆塗料組成物 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002114941A (ja) * | 2000-07-31 | 2002-04-16 | Nippon Paint Co Ltd | 撥水性塗料用硬化性樹脂組成物及び塗装物 |
WO2006038493A1 (ja) * | 2004-10-06 | 2006-04-13 | Daikin Industries, Ltd. | 含フッ素撥水撥油剤組成物 |
JPWO2006038493A1 (ja) * | 2004-10-06 | 2008-05-15 | ダイキン工業株式会社 | 含フッ素撥水撥油剤組成物 |
JP2012241073A (ja) * | 2011-05-18 | 2012-12-10 | Kansai Paint Co Ltd | 熱交換器フィン材用の着霜抑制処理組成物 |
WO2014034053A1 (ja) * | 2012-08-27 | 2014-03-06 | 日東電工株式会社 | 撥油性が付与された通気フィルタ |
CN104213411A (zh) * | 2014-09-18 | 2014-12-17 | 常熟市洁韵巾被有限公司 | 帆布的生产方法 |
WO2017026418A1 (ja) * | 2015-08-07 | 2017-02-16 | ダイキン工業株式会社 | 塗料及び積層体 |
JP2017036444A (ja) * | 2015-08-07 | 2017-02-16 | ダイキン工業株式会社 | 塗料及び積層体 |
WO2021187520A1 (ja) * | 2020-03-17 | 2021-09-23 | ダウ・東レ株式会社 | プレキャストコンクリート成形体 |
Also Published As
Publication number | Publication date |
---|---|
KR20000053358A (ko) | 2000-08-25 |
JP3512200B2 (ja) | 2004-03-29 |
EP0939105A4 (en) | 2000-03-01 |
CN1237991A (zh) | 1999-12-08 |
CN1131279C (zh) | 2003-12-17 |
EP0939105A1 (en) | 1999-09-01 |
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