WO2019069642A1 - 撥水撥油部材及び撥水撥油部材の製造方法 - Google Patents
撥水撥油部材及び撥水撥油部材の製造方法 Download PDFInfo
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- WO2019069642A1 WO2019069642A1 PCT/JP2018/033635 JP2018033635W WO2019069642A1 WO 2019069642 A1 WO2019069642 A1 WO 2019069642A1 JP 2018033635 W JP2018033635 W JP 2018033635W WO 2019069642 A1 WO2019069642 A1 WO 2019069642A1
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- Prior art keywords
- group
- water
- fluorine
- integer
- oil repellent
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- 0 CC(C*C*(C)C1I[C@](C)C1**)**(C(F)(F)F)[Si] Chemical compound CC(C*C*(C)C1I[C@](C)C1**)**(C(F)(F)F)[Si] 0.000 description 5
- MELHSMGNHAQIDE-POHAHGRESA-N CC(C)(C(C)(C)/[N+](/[O-])=C/C)N Chemical compound CC(C)(C(C)(C)/[N+](/[O-])=C/C)N MELHSMGNHAQIDE-POHAHGRESA-N 0.000 description 2
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D7/50—Multilayers
- B05D7/52—Two layers
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- B05D7/534—Base coat plus clear coat type the first layer being let to dry at least partially before applying the second layer
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- B05D7/50—Multilayers
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- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/002—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds
- C08G65/005—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds containing halogens
- C08G65/007—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds containing halogens containing fluorine
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C08J7/04—Coating
- C08J7/054—Forming anti-misting or drip-proofing coatings
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
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- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C08J2427/12—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C08J2471/02—Polyalkylene oxides
Definitions
- the present invention relates to a water and oil repellent member and a method of manufacturing the water and oil repellent member, and in particular, a primer layer is formed using an organosilicon compound having a plurality of silanol groups between a substrate and the water and oil repellent layer.
- the present invention relates to a water and oil repellent member and a method of manufacturing the water and oil repellent member.
- a fluorooxyalkylene group-containing polymer composition is disclosed.
- Rf 1 is —C d F 2 d O— (d is an integer of 1 to 6 and may be different for each repeating unit).
- Alkylene groups, A and B, independently of one another, R f 2 groups or Rf 2 is a monovalent fluorine-containing group whose end is a —CF 3 group or a —CF 2 H group, and Q is a divalent organic group.
- Z is a divalent to heptavalent organopolysiloxane residue having a siloxane bond
- R is an alkyl group having 1 to 4 carbon atoms or a phenyl group
- X is a hydrolysable group
- a is 2 or 3
- B is an integer of 1 to 6
- c is an integer of 1 to 5
- ⁇ is an integer of 0 or 1)
- Patent Document 1 exhibits relatively excellent durability on a substrate having a large amount of silanol groups represented by glass and the like, but it can be used against metals, metal oxides, resins and the like. It is difficult to obtain excellent adhesion.
- a method of improving the adhesiveness a method of providing a SiO 2 layer as a primer layer by a dry method (a vapor deposition method or a sputtering method) is disclosed (WO 2014/097388: Patent Document 2).
- a dry method a vapor deposition method or a sputtering method
- Patent Document 2 Using this method has been shown to be able to form a water- and oil-repellent layer with excellent durability, but it is necessary to perform treatment in vacuum, and a large-scale device is required to coat a large substrate. Therefore, the scope of application is limited in terms of productivity and production cost.
- a polysilazane solution that can be provided with a primer layer by a wet method is disclosed (WO 2010/038648: Patent Document 3). After application of the polysilazane solution, reaction with moisture is utilized to convert it to silica glass. This method is superior to the dry method in that it does not use a vacuum process, but in order to stabilize the adhesion of the water- and oil-repellent layer, long-time high-temperature heating and humidification are required. There is a problem in that the base material that can be applied from the viewpoint of heat resistance is limited. In addition, the following documents are mentioned as a prior art relevant to this invention with the literature mentioned above.
- the present invention has been made in view of the above circumstances, and is a water and oil repellent member excellent in abrasion resistance, and a water and oil repellent layer excellent in abrasion resistance on various substrates by a wet method or a dry method.
- An object of the present invention is to provide a method of manufacturing a water repellent member.
- the present inventors wetly apply a solution containing an organosilicon compound having a plurality of silanol groups and a solvent on the surface of a substrate, and dry the solvent. And wet-coating a solution containing a fluorine-containing compound and a solvent on the primer layer, and then drying the solvent or evaporating the solvent from the solution to form a fluorine-containing compound.
- An organic silicon compound having a plurality of silanol groups by the above method is used as a main component to various substrates obtained by a method including a step of dry coating and a step of curing a fluorine-containing compound to form a water- and oil-repellent layer.
- a water and oil repellent member having a water and oil repellent layer of a specific thickness mainly composed of a cured product of a fluorine-containing compound is provided on the primer layer after providing a primer layer of a specific thickness. Excellent It has been found that the water and oil repellent coating can be stably and simply applied to various substrates, and that the primer layer and the water and oil repellent layer can be applied even at room temperature (25 ° C.) process, thus making the present invention It reached.
- the present invention provides the following water and oil repellent member and a method of manufacturing the water and oil repellent member.
- a water / oil repellent member in which a primer layer is laminated as a first layer on at least one surface of a substrate, and a water / oil repellent layer is further laminated thereon as a second layer, wherein the primer layer has a plurality of silanol groups
- a water repellent layer comprising a layer of 0.5 to 500 nm in thickness mainly composed of an organosilicon compound, and a water repellent oil repellent layer comprising a layer of 0.5 to 30 nm in thickness mainly comprising a cured product of a fluorine-containing compound Oil repellent member.
- the fluorine-containing compound has at least one hydrolyzable group at at least one terminal, and the hydrolyzable group is an alkoxy group having 1 to 12 carbon atoms, an alkoxy alkoxy group having 1 to 12 carbon atoms, or 1 carbon atom.
- the water and oil repellent member according to any one of [1] to [3], which is a fluorooxyalkylene group-containing organosilicon compound having at least one hydrolyzable group at at least one end.
- the fluorine-containing compound is at least one selected from fluorine-containing hydrolysable organosilicon compounds represented by the following general formulas (1), (2), (3), (4) and (5) [1]
- Rf alpha -ZW beta (1) Rf- (ZW ⁇ ) 2 (2) Z '-(Rf-ZW ⁇ ) ⁇ (3)
- R f is — (CF 2 ) d —O— (CF 2 O) p (CF 2 CF 2 O) q (CF 2 CF 2 CF 2 O) r (CF 2 CF 2 CF 2 O) s (CF (CF 3) CF 2 O) t - (CF 2)
- each unit shown in parentheses may be randomly bonded, d is an integer of 0 to 8, and the unit may be linear or branched.
- A is a fluorine atom, a hydrogen atom, or a monovalent fluorine-containing group in which the end is —CF 3 group, —CF 2 H group or —CH 2 F group, and Z and Z ′ are independently a single bond or nitrogen
- R 2 is a divalent to octavalent organic group which may contain an atom, an oxygen atom, a silicon atom, a phosphorus atom or a sulfur atom
- W is a monovalent group having a hydrolyzable group at its terminal It is an organic group.
- ⁇ and ⁇ are each independently an integer of 1 to 7, and ⁇ + ⁇ is 2 to 8.
- ⁇ is an integer of 2 to 8.
- Wet-coating a solution containing W and then dry-coating the solvent, or dry-coating a fluorine-containing compound obtained by evaporating the solvent from the solution, and curing the fluorine-containing compound to form a water- and oil-repellent layer A process for producing a water and oil repellent member according to any one of [1] to [7], including the steps of
- the present invention it is possible to form a water and oil repellent member in which the surface of the antifouling layer excellent in water and oil repellency is firmly adhered.
- the method of manufacturing the water and oil repellent member is formed by a wet (brush coating, spin coating, spray coating, gravure coating, die coating, bar coating, slit coating) process without requiring a vacuum process or a high temperature heating process. It can be applied to various applications. For example, it is useful for an article having an antifouling property on the surface, in particular, a housing of an electronic device, a wearable terminal, a kitchen article and a sanitary article, a body of a transport device, a touch panel display, a protective film and the like.
- the present invention will be described in more detail.
- a solution containing an organosilicon compound having a plurality of silanol groups and a solvent is wet coated on the surface (at least one surface) of various substrates, the solvent is dried to form a primer layer, and the primer layer is further formed.
- a primer layer having a film thickness of 0.5 to 500 nm mainly composed of an organosilicon compound having a plurality of silanol groups is formed on various substrates by a method of curing a compound to form a water and oil repellent layer, etc. It is an object of the present invention to provide a water and oil repellent member having a water and oil repellent layer with a film thickness of 0.5 to 30 nm mainly composed of a cured product of a fluorinated organic compound.
- the substrate to which the present invention is applied is not particularly limited, but metal oxides, metals, resins, ceramics, quartz, glass, sapphire and diamond are particularly preferable.
- Examples of the metal oxide of the substrate SiO, SiO 2, Al 2 O 3, ITO, In 2 O 3, SnO 2, ZrO 2, TiO 2, Ti 2 O 3, Ti 4 O 7, Ti 3
- Examples include O 5 , Nb 2 O 5 , Ta 2 O 5 , Y 2 O 3 , WO 3 , HfO 2 , La 2 Ti 2 O 7 and the like.
- thermoplastic resin or a thermosetting resin is mentioned, Specifically, the following thing is good.
- the primer layer formed on the above-mentioned base material has an organosilicon compound having a plurality of silanol groups as a main component, preferably 50 mass% or more of the organosilicon compound, and has a film thickness of 0.5 to 500 nm.
- the primer layer can be formed by wet-coating a solution containing an organosilicon compound having a plurality of silanol groups and a solvent on the surface of various substrates, and then removing the solvent by drying.
- the organosilicon compound having a plurality of silanol groups is preferably one having two or more, more preferably three or more, still more preferably four or more silanol groups in one molecule. When there are too few silanol groups, the film itself may become weak.
- the amount of silanol groups in the organosilicon compound having a plurality of silanol groups is 0.0001 to 0.05 mol / g, particularly 0.001 to 0.04 mol / g, and especially 0.005 to 0.03 mol / g. Is preferred.
- the organosilicon compound having a plurality of silanol groups can be prepared by hydrolyzing an organosilicon compound having a plurality of hydrolyzable groups.
- examples of the organosilicon compound having a plurality of hydrolyzable groups include methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, dimethoxydiphenylsilane, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, and phenyltrimethoxysilane.
- the organosilicon compound having a plurality of silanol groups after hydrolyzing the organosilicon compound having a plurality of hydrolyzable groups described above, it is possible to use dehydration condensation to increase the molecular weight. preferable.
- the above-mentioned hydrolysis / dehydration condensate preferably has a weight average molecular weight of 300 to 100,000, and more preferably 5,000 to 50,000.
- the weight average molecular weight can be determined, for example, as a polystyrene equivalent value in gel permeation chromatography (GPC) analysis using toluene as a developing solvent (the same applies hereinafter).
- organosilicon compound having a plurality of silanol groups used in the present invention a hydrolysis / dehydration condensation compound of tetraethoxysilane is particularly preferable.
- organosilicon compound having a plurality of silanol groups It is desirable to dilute the organosilicon compound having a plurality of silanol groups with a solvent.
- a solvent for dissolving an organosilicon compound having a plurality of silanol groups alcohols such as methanol, ethanol, isopropanol and butanol, and ethers such as propylene glycol monomethyl ether and polyethylene glycol monopropyl ether are preferable, but are particularly limited Rather, it may be selected appropriately from the wettability with the substrate and the boiling point.
- the concentration of the organosilicon compound having a plurality of silanol groups in a solution containing an organosilicon compound having a plurality of silanol groups and a solvent is preferably 0.01 to 10% by mass, and more preferably 0.1 to 2% by mass. When the concentration is too low, the uncoated part increases, and when the concentration is too high, secondary aggregation may occur between silanol groups.
- an ultraviolet light absorber such as an ultraviolet light absorber, a light stabilizer, an antioxidant, a leveling agent, an antifoaming agent, a pigment, a dye, a dispersing agent, and an electrification Surfactants such as an inhibitor and an antifogging agent may be used.
- the solution containing the organosilicon compound having a plurality of silanol groups and a solvent may be formed by a method such as wet coating, particularly dipping, brush coating, spin coating, spray coating, gravure coating, die coating, bar coating, slit coating, or flow coating.
- a primer layer containing an organosilicon compound having a plurality of silanol groups as a main component can be formed.
- the heating may be performed, for example, at 40 to 500 ° C. for 1 minute to 24 hours in a temperature range which does not affect the substrate.
- the film thickness of the primer layer formed on the surface of the substrate is appropriately selected depending on the type of the substrate, but is usually 0.5 to 500 nm, preferably 3 to 200 nm, and particularly 10 to 100 nm.
- the film thickness can be measured by a known method such as spectroscopic ellipsometry or X-ray reflectance method.
- the water and oil repellent agent contains a fluorine-containing organic silicon compound as a main component.
- the fluorine-containing organic silicon compound include: JP-A-2007-197425, JP-A-2007-297589, JP-A-2007-297543, JP-A-2008-088412, JP-A-2008-144144, and the like.
- the fluorine-containing organic silicon compounds described in -253228, JP-A-2014-218639, and WO 2013/121984 can be used.
- the fluorine-containing organic silicon compound (or fluorine-containing compound) will be described more specifically.
- the fluorine-containing compound according to the present invention is preferably a fluorine-containing compound having at least one hydrolyzable group at at least one end, and the compound is preferably a methoxy group, an ethoxy group, a propoxy group or butoxy in one molecule.
- Groups such as alkoxy groups having 1 to 12 carbon atoms, especially 1 to 10 carbon atoms, 2 to 10 carbon atoms such as methoxymethoxy and methoxyethoxy groups, especially alkoxyalkoxy groups having 2 to 10 carbon atoms, carbon such as acetoxy groups It has a hydrolyzable group such as an acyloxy group having a carbon number of 1 to 10, an alkenyloxy group having 2 to 10 carbon atoms such as isopropenoxy group, a halogen group such as a chloro group, a bromo group or an iodo group, an amino group and a silazane group. And it is more preferable that it is an organosilicon compound which has a fluorine atom.
- the fluorine-containing compound is preferably a compound having a fluorooxyalkylene group.
- the fluorooxyalkylene group is a compound having a (poly) fluorooxyalkylene structure in which a plurality of repeating units represented by -C j F 2j O- are bonded (in the structure, j is 1 or more, preferably 1 to 6). And more preferably an integer of 1 to 4). In particular, it is preferable to have 3 to 500, preferably 15 to 200, more preferably 20 to 100, and more preferably 25 to 80 of the repeating units.
- the repeating unit -C j F 2j O- may be linear or branched.
- the following units may be mentioned, and two or more of these repeating units may be bonded.
- -CF 2 O- -CF 2 CF 2 O- -CF 2 CF 2 CF 2 O- -CF (CF 3) CF 2 O- -CF 2 CF 2 CF 2 O- -CF 2 CF 2 CF 2 CF 2 O- -C (CF 3 ) 2 O-
- the above (poly) fluorooxyalkylene structure is particularly preferably — (CF 2 ) d —O— (CF 2 O) p (CF 2 CF 2 O) q (CF 2 CF 2 CF 2 O) r (CF 2 CF) 2 CF 2 CF 2 O) s (CF (CF 3 ) CF 2 O) t- (CF 2 ) d-
- each unit shown in parentheses may be randomly combined.
- d is independently an integer of 0 to 8, preferably an integer of 0 to 5, and more preferably an integer of 0 to 2, and the unit may be linear or branched.
- p ′, q ′, r ′, s ′, t ′ are each independently an integer of 1 to 200, and the sum of p ′, q ′, r ′, s ′, t ′ is 3
- Each unit shown in the parentheses may be randomly linked, d 'is independently an integer of 0 to 5, and the unit may be linear or branched. Good.
- the fluorine-containing compound according to the present invention is more preferably a fluorine-containing hydrolyzable organosilicon compound (or a fluorine-containing hydrolyzable organosilicon compound) represented by any one of the following general formulas (1) to (5) .
- a fluorine-containing hydrolyzable organosilicon compound represented by any one of the following general formulas (1) to (5) .
- One of these may be used alone, or two or more may be used in combination.
- (A-Rf) alpha -ZW beta (1) Rf- (ZW ⁇ ) 2 (2) Z '-(Rf-ZW ⁇ ) ⁇ (3)
- A is a fluorine atom, a hydrogen atom, or a monovalent fluorine-containing group in which the end is —CF 3 group, —CF 2 H group or —CH 2 F group, and Z and Z ′ are independently a single bond or nitrogen
- R 2 is a divalent to octavalent organic group which may contain an atom, an oxygen atom, a silicon atom, a phosphorus atom or a sulfur atom
- W is a monovalent group having a hydrolyzable group at its terminal It is an organic group.
- ⁇ and ⁇ are each independently an integer of 1 to 7, preferably ⁇ is an integer of 1 to 3, more preferably 1 and ⁇ is an integer of 1 to 3, and ⁇ + ⁇ is an integer of 2 to 8, preferably Is an integer of 2 to 4.
- ⁇ is an integer of 2 to 8, preferably 2 or 3.
- Q is a single bond or a divalent organic group, ⁇ is each independently an integer of 1 to 10, Y is a divalent organic group having a hydrolysable group, B is a hydrogen atom, carbon It is an alkyl group of the number 1 to 4 or a halogen atom.
- Rf is a described above (poly) fluoro polyoxyalkylene structure - (CF 2) d -O- ( CF 2 O) p (CF 2 CF 2 O) q (CF 2 It is CF 2 CF 2 O) r (CF 2 CF 2 CF 2 O) s (CF (CF 3 ) CF 2 O) t- (CF 2 ) d- , and the same as described above can be exemplified.
- A is a fluorine atom, a hydrogen atom, or a monovalent fluorine-containing group whose terminal is a —CF 3 group, a —CF 2 H group or a —CH 2 F group.
- -CF 3 group, -CF 2 CF 3 group and -CF 2 CF 2 CF 3 group are preferable.
- Z and Z ′ may independently contain a single bond, or a nitrogen atom, an oxygen atom, a silicon atom, a phosphorus atom or a sulfur atom, and may be fluorine-substituted It is a good divalent to octavalent organic group.
- the organic group can be represented by (L) e -M (e is an integer of 1 to 7, preferably an integer of 1 to 3).
- L is a single bond, or an oxygen atom, a sulfur atom, or a divalent organic group
- each L for Z is an Rf group and an M group (or a W group)
- L in Z ′ is a linking group between M (or Rf group) and Rf group.
- the divalent organic group preferably, an amide bond, an ether bond, an ester bond, or a diorganosilylene group such as dimethylsilylene group, -Si [OH] [(CH 2 ) f Si (CH 3 ) 3 ]-( f is an unsubstituted or substituted divalent organic group having 2 to 12 carbon atoms which may contain one or more selected from the group consisting of a group represented by an integer of 2 to 4, and more preferably It is an unsubstituted or substituted divalent hydrocarbon group having 2 to 12 carbon atoms which may have a structure.
- Examples of the unsubstituted or substituted divalent hydrocarbon group having 2 to 12 carbon atoms include ethylene group, propylene group (trimethylene group, methylethylene group), butylene group (tetramethylene group, methylpropylene group), and hexamethylene group.
- an unsubstituted or substituted alkylene group having 2 to 4 carbon atoms or a phenylene group is preferable.
- a bivalent organic group of L the group shown by the following structure or the group which 2 or more types of these couple
- f is an integer of 2 to 4
- b is an integer of 2 to 6, preferably 2 to 4
- u and v are an integer of 1 to 4
- g is 2 to 4
- Me is a methyl group.
- M is a single bond, or a nitrogen atom, a silicon atom, a carbon atom, a phosphorus atom or a group containing these, or a divalent to octavalent organic group.
- R 1 is preferably, independently of each other, an alkyl group having 1 to 3 carbon atoms, a hydroxyl group, or a C 1 to 3 carbon oxy group which may have a diorganosiloxane structure having 2 to 51 silicon atoms.
- R 3 s independently of each other are preferably an alkyl group having 1 to 3 carbon atoms, an alkenyl group having 2 or 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, or a chlor group.
- R 4 is an aryl group having 6 to 10 carbon atoms such as an alkyl group having 1 to 3 carbon atoms and a phenyl group.
- M is a siloxane residue, it has 2 to 51 silicon atoms, preferably 2 to 13 silicon atoms, more preferably 2 to 11 silicon atoms, and still more preferably 2 to 5 silicon atoms. It is preferred to have a linear, branched or cyclic organopolysiloxane structure.
- the organopolysiloxane is substituted or unsubstituted one having 1 to 8 carbon atoms, more preferably 1 to 4 carbon atoms, such as methyl, ethyl, propyl, butyl and C 3 F 7 -C 3 H 6-. It is preferable to have a substituted alkyl group or a phenyl group. Also, it may contain a silalkylene structure in which two silicon atoms are linked by an alkylene group, that is, Si- (CH 2 ) n -Si. In the above formula, n is an integer of 2 to 6, preferably 2 to 4.
- W is a monovalent organic group having a hydrolyzable group at its terminal, and is preferably represented by the following formula. (Wherein R is an alkyl group having 1 to 4 carbon atoms or a phenyl group, X is a hydrolyzable group, a is 2 or 3, and m is an integer of 0 to 10.)
- the hydrolyzable group for X is an alkoxy group having 1 to 12 carbon atoms such as methoxy, ethoxy, propoxy, butoxy, etc., particularly 1 to 10 carbons, methoxymethoxy, methoxyethoxy, etc.
- C 2-12 especially C 2-10 alkoxyalkoxy, C 1-10 acyloxy such as acetoxy, C 2-10 alkenyloxy such as isopropenoxy, chloro, bromo And halogen groups such as iodo group and amino groups.
- methoxy and ethoxy are preferable.
- R is an alkyl group such as a methyl group having 1 to 4 carbon atoms, an ethyl group or the like, or a phenyl group, and among them, a methyl group is preferable.
- a is 2 or 3, and 3 is preferable from the viewpoint of reactivity and adhesion to a substrate.
- m is an integer of 0 to 10, preferably an integer of 2 to 8, and more preferably 2 or 3.
- Examples of the structures represented by ( ⁇ ) ⁇ ZW ⁇ and —ZW ⁇ in the formulas (1) to (3) include the following structures.
- L, R, X, f, c and a are as described above, m1 is an integer of 0 to 10, preferably an integer of 2 to 8, and m2 is an integer of 1 to 10, preferably It is an integer of 2 to 8, and Me is a methyl group.
- Q is a single bond or a divalent organic group, and is a linking group between the Rf group and the Y group.
- the divalent organic group for Q preferably, an amide bond, an ether bond, an ester bond, or a diorganosilylene group such as dimethylsilylene group, -Si [OH] [(CH 2 ) f Si (CH 3 ) 3
- a substituted or unsubstituted divalent organic group having 2 to 12 carbon atoms which may contain one or more selected from the group consisting of a group represented by the formula-(wherein f is an integer of 2 to 4);
- it is an unsubstituted or substituted divalent hydrocarbon group having 2 to 12 carbon atoms which may contain the above-mentioned structure.
- Examples of the unsubstituted or substituted divalent hydrocarbon group having 2 to 12 carbon atoms include the same as the unsubstituted or substituted divalent hydrocarbon group having 2 to 12 carbon atoms exemplified for L above. it can.
- Y is a divalent organic group having a hydrolyzable group independently of each other, preferably having a structure represented by the following formula.
- K is an integer of 0 to 10, preferably an integer of 1 to 10, more preferably an integer of 2 to 8, further preferably an integer of 2 to 6)
- H is an integer of 1 to 6, preferably 1 or 2
- M ′ is an unsubstituted or substituted trivalent to octavalent, preferably trivalent or tetravalent hydrocarbon group, in the hydrocarbon group
- Some or all of the carbon atoms may be replaced by silicon atoms, and some or all of the hydrogen atoms bonded to the carbon atoms may be replaced by halogen atoms such as fluorine atoms.
- M ′ a group represented by the following structure is preferable.
- M 1 is a single bond, an unsubstituted or substituted divalent hydrocarbon group having 1 to 6 carbon atoms, or a diorganosilylene group such as dimethylsilylene group
- M 1 examples include a single bond, a phenylene group, a dimethylsilylene group, and a tetrafluoroethylene group.
- M 2 examples include the following may be mentioned. (Wherein, Me is a methyl group)
- Examples of such Y include the following groups.
- k1 is an integer of 0 to 10, preferably an integer of 1 to 8
- k2 is an integer of 2 to 10, preferably an integer of 2 to 8
- Me is Methyl group
- ⁇ is an integer of 1 to 10, preferably an integer of 1 to 4.
- B is, independently of each other, a hydrogen atom, an alkyl group such as methyl group having 1 to 4 carbon atoms, ethyl group, propyl group and butyl group, or a halogen atom such as fluorine atom, chlorine atom, bromine atom and iodine atom is there.
- fluorine-containing hydrolyzable organosilicon compound fluorine-containing hydrolyzable organosilicon compound represented by the above formulas (1) to (5) include the following structures. (Wherein, Me is a methyl group, p1, q1, r1, s1, and t1 are each independently an integer of 1 to 200, and the total of p1, q1, r1, s1, and t1 is 3 to 500) Yes, each unit shown in parentheses may be randomly combined.)
- the fluorine-containing hydrolyzable organosilicon compound (fluorine-containing hydrolyzable organosilicon compound) represented by the general formulas (1) to (5) according to the present invention is a part of the hydrolyzable group (X). Alternatively, it may contain a compound in which the whole is hydrolyzed (a compound in which X is an OH group), and may contain a compound in which part or all of these OH groups are condensed.
- the fluorine-containing compound is preferably diluted in advance with a solvent, and such a solvent is not particularly limited as long as it can uniformly dissolve the fluorine-containing compound.
- a solvent is not particularly limited as long as it can uniformly dissolve the fluorine-containing compound.
- fluorine-modified aliphatic hydrocarbon solvents perfluoroheptane, perfluorooctane, etc.
- fluorine-modified aromatic hydrocarbon solvents (1, 3-trifluoromethylbenzene, etc.
- fluorine-modified ether solvents methylperfluoro) Butyl ether, ethyl perfluorobutyl ether, perfluoro (2-butyl tetrahydrofuran), etc.
- fluorine-modified alkylamine solvents perfluorotributylamine, perfluorotripentylamine, etc.
- hydrocarbon solvents petroleum benzene, toluene, xylene
- a fluorine-modified solvent is preferable, and in particular, a fluorine-modified ether solvent and a fluorine-modified aromatic hydrocarbon solvent are preferable.
- the above solvents may be used alone or in combination of two or more.
- the solvent contains 0.01 to 50% by mass, preferably 0.03 to 10% by mass, and more preferably 0.05 to 50% by mass of the fluorine-containing compound in the water and oil repellent (a solution containing the fluorine-containing compound and the solvent).
- the content is preferably 1% by mass.
- the water and oil repellent containing the fluorine-containing compound is applied to the substrate by a known method such as wet coating (immersion method, brush coating, spin coating, spray, gravure coating, die coating, bar coating, slit coating), vapor deposition method It can be given. Coating conditions etc. may be in accordance with a conventionally known method, but since the primer layer is coated and formed by a wet coating method (wet method), the water and oil repellent agent containing a fluorine-containing compound is also a wet coating method (wet type Coating is more efficient.
- the fluorine-containing compound can be cured at room temperature (25 ° C.) in 1 to 24 hours, but may be heated at 30 to 200 ° C. for 1 minute to 1 hour in order to cure in a shorter time. Curing is preferably performed under humidification (50 to 90% RH) in order to accelerate hydrolysis.
- the surface of the primer layer on the substrate may be subjected to cleaning such as plasma treatment, UV treatment, or ozone treatment or treatment to activate the surface before applying the water and oil repellent containing the fluorine-containing compound. Good.
- the film thickness of the fluorine layer (water and oil repellent layer) of the water and oil repellent member of the present invention is 0.5 to 30 nm, and preferably 1 to 20 nm.
- the treatment agent may be aggregated to deteriorate the visibility, and when it is too thin, the surface properties and the abrasion resistance may not be sufficient.
- the water repellent and oil repellent member of the present invention thus obtained includes car navigation systems, tablet PCs, smart phones, digital cameras, digital video cameras, digital video cameras, PDAs, portable audio players, car audios, housings such as game devices, etc., cameras Lenses, glasses lenses, sunglasses, lenses such as AR lenses, VR lenses, endoscopes, scalpels, sphygmomanometers, medical instruments such as X-ray CT, MRI, etc., liquid crystal displays, organic EL displays, touch panels such as flexible devices, etc.
- Optical films such as protective films, antireflective films, compact discs, DVDs, Blu-ray discs, sanitary products such as bathtubs and wash basins, kitchen supplies such as kitchen stands, window glass for automobiles, trains, aircrafts, headlamp covers Etc., exterior building materials, kitchen Building materials, waiting room, art, body of transportation equipment, aluminum wheels, mirrors, and a cover or the like for millimeter wave sensor.
- Primer layers 1 to 5 were respectively formed on an acrylic resin base material (acrylic de la glass A manufactured by engineering test service, Inc., test strip substrate of 2 mm in thickness, 50 mm in width, and 100 mm in length) by the method described below.
- acrylic resin base material acrylic de la glass A manufactured by engineering test service, Inc., test strip substrate of 2 mm in thickness, 50 mm in width, and 100 mm in length
- the above base material is a treatment liquid obtained by diluting a hydrolysis / dehydration condensation compound of tetraethoxysilane (weight average molecular weight: 25,000, amount of silanol group: 0.01 mol / g) with butanol to a solid content of 0.5 mass%.
- the composition was applied by dipping and dried at room temperature (25 ° C.) for 1 hour to form a primer layer 1 with a thickness of 20 nm on the substrate. In the dipping coating, the substrate was immersed in the treatment liquid for 30 seconds and then pulled up at 150 mm / min.
- the above substrate is dip-coated with a treatment liquid prepared by diluting 5 weight articles of tetraethoxysilane with butanol to a solid content of 0.5 mass%, and then cured for 24 hours at 80 ° C./80% RH.
- the primer layer 3 with a thickness of 18 nm was formed on the substrate.
- the substrate was immersed in the treatment liquid for 30 seconds and then pulled up at 150 mm / min.
- the SiO 2 layer was coated on the substrate by sputtering to a thickness of 20 nm to form a primer layer 5 having a thickness of 20 nm on the substrate.
- a water and oil repellent layer was formed on the primer layer of the substrate on which the primer layers 1 to 5 were formed according to the following method.
- Compound 1 shown below is diluted with a fluorine-based solvent (Novec 7200 (manufactured by 3M)) to a solid content of 0.1% by mass, and then diluted with a spray coating apparatus (NST-51 manufactured by T & K Corporation) It spray-coated on the primer layer of the said base material. Thereafter, curing was performed at 80 ° C. for 30 minutes to form a cured film (water and oil repellent layer), and a test body was produced.
- the average film thickness of the water- and oil-repellent layer calculated from the detected amount of F by a fluorescent X-ray apparatus (ZSX mini 2 manufactured by Rigaku Corporation) was about 10 nm.
- Example 1 is the primer layer 1
- Comparative Example 1 is the primer layer 2
- Comparative Example 2 is the primer layer 3
- Comparative Example 3 is the primer layer 4
- Comparative Example 4 is the substrate on which the primer layer 5 is formed.
- Comparative Example 5 the water and oil repellent layer was formed directly on the acrylic resin substrate by the above method without forming the primer layer.
- Various evaluations were performed by the following methods using the test body obtained above. The results are shown in Table 1.
- Example 1 is excellent in water and oil repellency and has a low dynamic friction coefficient, and as a result, sebum dirt wiping performance is excellent. Also, before and after the abrasion test, it showed excellent water and oil repellency with a water contact angle of 100 ° or more.
- Comparative Examples 1 and 2 in which the non-hydrolyzed (non-silanol group-containing) organosilicon compounds were used, the initial characteristics were not sufficient and the abrasion resistance was also poor.
- perhydropolysilazane representative for wet coating of a silica film was used, but although the initial properties were excellent, the abrasion resistance was insufficient.
- Comparative Example 4 a typical SiO 2 sputtered film was used for dry coating of a silica film, but although the initial characteristics were excellent, the wear resistance was not satisfactory. In Comparative Example 5, when no primer was used, sufficient performance was not exhibited.
- the silanol group has good adhesion to the substrate and is also excellent in reactivity with the fluorine-containing compound having a hydrolysable group, so that an antifouling film excellent in abrasion resistance could be formed.
- a water and oil repellent member having a cured film (water and oil repellent layer) excellent in water and oil repellency can be formed into a film at room temperature process only by wet coating.
- a cured film water and oil repellent layer
- wear resistance can be achieved over the prior art.
- the present invention is a technology that also enables coating on a large area. For this reason, the water and oil repellent member of the present invention enables a functional film to be produced in roll form, and it can be used for everyday use, such as the casing of electronic devices and around kitchens. Good antifouling surface can be maintained over time.
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Abstract
Description
なお、本発明に関連する従来技術として、上述した文献と共に下記文献が挙げられる。
〔1〕
基材の少なくとも片面に、第1層としてプライマー層を積層し、さらにその上に第2層として撥水撥油層を順次積層した撥水撥油部材であって、プライマー層がシラノール基を複数有する有機ケイ素化合物を主成分とする膜厚0.5~500nmの層からなり、かつ撥水撥油層が含フッ素化合物の硬化物を主成分とする膜厚0.5~30nmの層からなる撥水撥油部材。
〔2〕
シラノール基を複数有する有機ケイ素化合物が、テトラエトキシシランの加水分解・脱水縮合化合物であることを特徴とする〔1〕に記載の撥水撥油部材。
〔3〕
含フッ素化合物が、少なくとも1つの末端に加水分解性基を少なくとも1つ有し、該加水分解性基が、炭素数1~12のアルコキシ基、炭素数1~12のアルコキシアルコキシ基、炭素数1~10のアシロキシ基、炭素数2~10のアルケニルオキシ基、ハロゲン基、アミノ基及びシラザン基から選ばれる基である〔1〕又は〔2〕に記載の撥水撥油部材。
〔4〕
含フッ素化合物が、分子中に-(CF2)d-O-(CF2O)p(CF2CF2O)q(CF2CF2CF2O)r(CF2CF2CF2CF2O)s(CF(CF3)CF2O)t-(CF2)d-(式中、p、q、r、s、tはそれぞれ独立に0~200の整数であり、かつ、p+q+r+s+t=3~500であり、括弧内に示される各単位はランダムに結合されていてよく、dは0~8の整数であり、該単位は直鎖状であっても分岐状であってもよい。)を有し、かつ、少なくとも1つの末端に加水分解性基を少なくとも1つ有するフルオロオキシアルキレン基含有有機ケイ素化合物である〔1〕~〔3〕のいずれかに記載の撥水撥油部材。
〔5〕
含フッ素化合物が、下記一般式(1)、(2)、(3)、(4)及び(5)で表されるフッ素含有加水分解性有機ケイ素化合物から選ばれる少なくとも1種である〔1〕~〔4〕のいずれかに記載の撥水撥油部材。
(A-Rf)α-ZWβ (1)
Rf-(ZWβ)2 (2)
Z’-(Rf-ZWβ)γ (3)
〔式中、Rfは-(CF2)d-O-(CF2O)p(CF2CF2O)q(CF2CF2CF2O)r(CF2CF2CF2CF2O)s(CF(CF3)CF2O)t-(CF2)d-であり、p、q、r、s、tはそれぞれ独立に0~200の整数であり、かつ、p+q+r+s+t=3~500であり、括弧内に示される各単位はランダムに結合されていてよく、dは0~8の整数であり、該単位は直鎖状であっても分岐状であってもよい。Aはフッ素原子、水素原子、又は末端が-CF3基、-CF2H基もしくは-CH2F基である1価のフッ素含有基であり、Z、Z’は独立に単結合、又は窒素原子、酸素原子、ケイ素原子、リン原子もしくは硫黄原子を含んでいてもよく、フッ素置換されていてもよい2~8価の有機基であり、Wは末端に加水分解性基を有する1価の有機基である。α、βはそれぞれ独立に1~7の整数であり、かつ、α+β=2~8である。γは2~8の整数である。〕
A-Rf-Q-(Y)δ-B (4)
Rf-(Q-(Y)δ-B)2 (5)
(式中、Rf、Aは前記と同じであり、Qは単結合又は2価の有機基であり、δは1~10の整数であり、Yは加水分解性基を有する2価の有機基であり、Bは水素原子、炭素数1~4のアルキル基、又はハロゲン原子である。)
〔6〕
式(1)~(5)で表されるフッ素含有加水分解性有機ケイ素化合物が、下記に示すものである〔5〕に記載の撥水撥油部材。
〔7〕
基材が、金属酸化物、金属、樹脂、セラミック、石英、ガラス、サファイヤ又はダイヤモンドである〔1〕~〔6〕のいずれかに記載の撥水撥油部材。
〔8〕
基材表面に、シラノール基を複数有する有機ケイ素化合物と溶剤を含む溶液を湿式塗布する工程と、該溶剤を乾燥させてプライマー層を形成する工程と、該プライマー層上に、含フッ素化合物と溶剤を含む溶液を湿式塗布した後に、該溶剤を乾燥させるか、又は、該溶液から溶剤を蒸発させた含フッ素化合物を乾式塗布する工程と、含フッ素化合物を硬化させて撥水撥油層を形成する工程とを含む〔1〕~〔7〕のいずれかに記載の撥水撥油部材の製造方法。
本発明は、各種基材の表面(少なくとも片面)に、シラノール基を複数有する有機ケイ素化合物と溶剤を含む溶液を湿式塗布した後、該溶剤を乾燥させてプライマー層を形成し、さらに該プライマー層上に、含フッ素化合物と溶剤を含む溶液(撥水撥油剤)を湿式塗布した後に、該溶剤を乾燥させるか、あるいは、該溶液から溶剤を蒸発させた含フッ素化合物を乾式塗布すると共に含フッ素化合物を硬化させて撥水撥油層を形成する方法等によって、各種基材上に、シラノール基を複数有する有機ケイ素化合物を主成分とする膜厚0.5~500nmのプライマー層を有し、さらにその上に含フッ素有機化合物の硬化物を主成分とする膜厚0.5~30nmの撥水撥油層を有する撥水撥油部材を提供するものである。
-CF2O-
-CF2CF2O-
-CF2CF2CF2O-
-CF(CF3)CF2O-
-CF2CF2CF2CF2O-
-CF2CF2CF2CF2CF2O-
-C(CF3)2O-
(A-Rf)α-ZWβ (1)
Rf-(ZWβ)2 (2)
Z’-(Rf-ZWβ)γ (3)
A-Rf-Q-(Y)δ-B (4)
Rf-(Q-(Y)δ-B)2 (5)
また、Qは単結合又は2価の有機基であり、δはそれぞれ独立に1~10の整数であり、Yは加水分解性基を有する2価の有機基であり、Bは水素原子、炭素数1~4のアルキル基、又はハロゲン原子である。
上記において、R1は互いに独立に、好ましくは炭素数1~3のアルキル基、ヒドロキシル基、ケイ素原子数2~51個のジオルガノシロキサン構造を介在していてもよい炭素数1~3のオキシアルキレン基の繰返し単位を有する基、又はR2 3SiO-で示されるシリルエーテル基であり、R2は互いに独立に、水素原子、好ましくは炭素数1~3のアルキル基、フェニル基等のアリール基、又は炭素数1~3のアルコキシ基である。R3は互いに独立に、好ましくは炭素数1~3のアルキル基、炭素数2又は3のアルケニル基、炭素数1~3のアルコキシ基、又はクロル基である。R4は炭素数1~3のアルキル基、フェニル基等の炭素数6~10のアリール基である。Mがシロキサン残基の場合には、ケイ素原子数2~51個、好ましくはケイ素原子数2~13個、より好ましくはケイ素原子数2~11個、さらに好ましくはケイ素原子数2~5個の直鎖状、分岐状又は環状オルガノポリシロキサン構造を有することが好ましい。該オルガノポリシロキサンは、炭素数1~8、より好ましくは炭素数1~4のメチル基、エチル基、プロピル基、ブチル基、及びC3F7-C3H6-等の非置換もしくはフッ素置換アルキル基又はフェニル基を有するものがよい。また、2つのケイ素原子がアルキレン基で結合されたシルアルキレン構造、即ちSi-(CH2)n-Siを含んでいてもよい。前記式においてnは2~6の整数であり、好ましくは2~4の整数である。
また、Rは、炭素数1~4のメチル基、エチル基等のアルキル基、又はフェニル基であり、中でもメチル基が好適である。
aは2又は3であり、反応性、基材に対する密着性の観点から、3が好ましい。mは0~10の整数であり、好ましくは2~8の整数であり、より好ましくは2又は3である。
また、Bは互いに独立に、水素原子、炭素数1~4のメチル基、エチル基、プロピル基及びブチル基等のアルキル基、又はフッ素原子、塩素原子、臭素原子及びヨウ素原子等のハロゲン原子である。
上記溶剤は1種を単独で使用しても2種以上を混合して使用してもよい。
溶剤は撥水撥油剤(含フッ素化合物と溶剤を含む溶液)中における含フッ素化合物の質量%が0.01~50質量%、好ましくは0.03~10質量%、さらに好ましくは0.05~1質量%になるように含有することが好ましい。
含フッ素化合物は、室温(25℃)で1~24時間にて硬化させることができるが、さらに短時間で硬化させるために30~200℃で1分~1時間加熱してもよい。硬化は加湿下(50~90%RH)で行うことが加水分解を促進する上で好ましい。
〔プライマー層の形成〕
下記に示す方法でプライマー層1~5をアクリル樹脂基材(株式会社エンジニアリングテストサービス社製アクリルデラグラスA、厚さ2mm、幅50mm、長さ100mmの試験片基板)にそれぞれ形成した。
テトラエトキシシランの加水分解・脱水縮合化合物(重量平均分子量:25,000、シラノール基量:0.01mol/g)をブタノールで固形分0.5質量%に希釈した処理液にて、上記基材をディッピング塗工した後、室温(25℃)で1時間乾燥させて、上記基材上に厚さ20nmのプライマー層1を形成した。ディッピング塗工は、基材を処理液に30秒浸漬後、150mm/minで引き上げた。
テトラエトキシシランをエタノールで固形分0.5質量%に希釈した処理液にて、上記基材をディッピング塗工した後、80℃/80%RHで24時間硬化させて、上記基材上に厚さ20nmのプライマー層2を形成した。ディッピング塗工は、基材を処理液に30秒浸漬後、150mm/minで引き上げた。
テトラエトキシシランの5重量体物をブタノールで固形分0.5質量%に希釈した処理液にて、上記基材をディッピング塗工した後、80℃/80%RHで24時間硬化させて、上記基材上に厚さ18nmのプライマー層3を形成した。ディッピング塗工は、基材を処理液に30秒浸漬後、150mm/minで引き上げた。
ペルヒドロポリシラザンをジブチルエーテルで固形分0.5質量%に希釈した処理液にて、上記基材をディッピング塗工した後、80℃/80%RHで24時間硬化させて、上記基材上に厚さ23nmのプライマー層4を形成した。ディッピング塗工は、基材を処理液に30秒浸漬後、150mm/minで引き上げた。
上記基材にSiO2層をスパッタ法で20nm塗工して、上記基材上に厚さ20nmのプライマー層5を形成した。
下記に示す化合物1を固形分で0.1質量%になるようにフッ素系溶剤(Novec7200(3M社製))で希釈した後、スプレー塗工装置(株式会社ティーアンドケー製NST-51)で上記基材のプライマー層上にスプレー塗工した。その後、80℃で30分硬化させて硬化被膜(撥水撥油層)を形成し、試験体を作製した。蛍光X線装置(株式会社リガク製 ZSXmini2)によるF検出量から算出した撥水撥油層の平均の膜厚は約10nmであった。
接触角計(DropMaster、協和界面科学社製)を用いて、硬化被膜(撥水撥油層)の水に対する接触角及びオレイン酸に対する接触角を測定した。
硬化被膜(撥水撥油層)のベンコット(旭化成社製)に対する動摩擦係数を、新東科学社製の表面性試験機を用いて、下記条件で測定した。
接触面積:10mm×30mm
荷重:100g
7人のパネラーにより、額の皮脂を指で硬化被膜(撥水撥油層)の表面に転写し、ベンコット(旭化成社製)で拭取りした際の拭取り性を、下記評価基準により評価した。
A:2回以内で完全に拭取れる
B:3~5回以内で完全に拭取れる
C:5回の拭き取りでは、一部拭取れない部分が残る
D:5回の拭き取りではほとんど拭取れない
往復摩耗試験機(HEIDON 30S、新東科学社製)を用いて、以下の条件で硬化被膜(撥水撥油層)の耐摩耗試験を実施した。耐摩耗試験後の硬化被膜(撥水撥油層)の水に対する接触角を、接触角計(DropMaster、協和界面科学社製)を用いて測定した。
評価環境条件:25℃、湿度40%
擦り材:試料と接触するテスターの先端部(10mm×10mm)に不織布を8枚重ねて包み、輪ゴムで固定した。
荷重:1kg
擦り距離(片道):30mm
擦り速度:3,600mm/min
往復回数:5,000往復
Claims (8)
- 基材の少なくとも片面に、第1層としてプライマー層を積層し、さらにその上に第2層として撥水撥油層を順次積層した撥水撥油部材であって、プライマー層がシラノール基を複数有する有機ケイ素化合物を主成分とする膜厚0.5~500nmの層からなり、かつ撥水撥油層が含フッ素化合物の硬化物を主成分とする膜厚0.5~30nmの層からなる撥水撥油部材。
- シラノール基を複数有する有機ケイ素化合物が、テトラエトキシシランの加水分解・脱水縮合化合物であることを特徴とする請求項1に記載の撥水撥油部材。
- 含フッ素化合物が、少なくとも1つの末端に加水分解性基を少なくとも1つ有し、該加水分解性基が、炭素数1~12のアルコキシ基、炭素数1~12のアルコキシアルコキシ基、炭素数1~10のアシロキシ基、炭素数2~10のアルケニルオキシ基、ハロゲン基、アミノ基及びシラザン基から選ばれる基である請求項1又は2に記載の撥水撥油部材。
- 含フッ素化合物が、分子中に-(CF2)d-O-(CF2O)p(CF2CF2O)q(CF2CF2CF2O)r(CF2CF2CF2CF2O)s(CF(CF3)CF2O)t-(CF2)d-(式中、p、q、r、s、tはそれぞれ独立に0~200の整数であり、かつ、p+q+r+s+t=3~500であり、括弧内に示される各単位はランダムに結合されていてよく、dは0~8の整数であり、該単位は直鎖状であっても分岐状であってもよい。)を有し、かつ、少なくとも1つの末端に加水分解性基を少なくとも1つ有するフルオロオキシアルキレン基含有有機ケイ素化合物である請求項1~3のいずれか1項に記載の撥水撥油部材。
- 含フッ素化合物が、下記一般式(1)、(2)、(3)、(4)及び(5)で表されるフッ素含有加水分解性有機ケイ素化合物から選ばれる少なくとも1種である請求項1~4のいずれか1項に記載の撥水撥油部材。
(A-Rf)α-ZWβ (1)
Rf-(ZWβ)2 (2)
Z’-(Rf-ZWβ)γ (3)
〔式中、Rfは-(CF2)d-O-(CF2O)p(CF2CF2O)q(CF2CF2CF2O)r(CF2CF2CF2CF2O)s(CF(CF3)CF2O)t-(CF2)d-であり、p、q、r、s、tはそれぞれ独立に0~200の整数であり、かつ、p+q+r+s+t=3~500であり、括弧内に示される各単位はランダムに結合されていてよく、dは0~8の整数であり、該単位は直鎖状であっても分岐状であってもよい。Aはフッ素原子、水素原子、又は末端が-CF3基、-CF2H基もしくは-CH2F基である1価のフッ素含有基であり、Z、Z’は独立に単結合、又は窒素原子、酸素原子、ケイ素原子、リン原子もしくは硫黄原子を含んでいてもよく、フッ素置換されていてもよい2~8価の有機基であり、Wは末端に加水分解性基を有する1価の有機基である。α、βはそれぞれ独立に1~7の整数であり、かつ、α+β=2~8である。γは2~8の整数である。〕
A-Rf-Q-(Y)δ-B (4)
Rf-(Q-(Y)δ-B)2 (5)
(式中、Rf、Aは前記と同じであり、Qは単結合又は2価の有機基であり、δは1~10の整数であり、Yは加水分解性基を有する2価の有機基であり、Bは水素原子、炭素数1~4のアルキル基、又はハロゲン原子である。) - 基材が、金属酸化物、金属、樹脂、セラミック、石英、ガラス、サファイヤ又はダイヤモンドである請求項1~6のいずれか1項に記載の撥水撥油部材。
- 基材表面に、シラノール基を複数有する有機ケイ素化合物と溶剤を含む溶液を湿式塗布する工程と、該溶剤を乾燥させてプライマー層を形成する工程と、該プライマー層上に、含フッ素化合物と溶剤を含む溶液を湿式塗布した後に、該溶剤を乾燥させるか、又は、該溶液から溶剤を蒸発させた含フッ素化合物を乾式塗布する工程と、含フッ素化合物を硬化させて撥水撥油層を形成する工程とを含む請求項1~7のいずれか1項に記載の撥水撥油部材の製造方法。
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| Publication number | Publication date |
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| KR20200062294A (ko) | 2020-06-03 |
| TWI772527B (zh) | 2022-08-01 |
| JP6988905B2 (ja) | 2022-01-05 |
| JPWO2019069642A1 (ja) | 2020-11-05 |
| EP3693160A1 (en) | 2020-08-12 |
| US12146040B2 (en) | 2024-11-19 |
| CN111163936A (zh) | 2020-05-15 |
| KR102602479B1 (ko) | 2023-11-16 |
| CN111163936B (zh) | 2022-06-14 |
| EP3693160A4 (en) | 2021-07-07 |
| US20200254482A1 (en) | 2020-08-13 |
| TW201923021A (zh) | 2019-06-16 |
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