WO2012157635A1 - コーティング層及びコーティング層形成方法 - Google Patents
コーティング層及びコーティング層形成方法 Download PDFInfo
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- WO2012157635A1 WO2012157635A1 PCT/JP2012/062388 JP2012062388W WO2012157635A1 WO 2012157635 A1 WO2012157635 A1 WO 2012157635A1 JP 2012062388 W JP2012062388 W JP 2012062388W WO 2012157635 A1 WO2012157635 A1 WO 2012157635A1
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- 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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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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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
- B05D7/14—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 metal, e.g. car bodies
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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
- B05D7/50—Multilayers
- B05D7/52—Two layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/057—Metal alcoholates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of 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; Compositions of derivatives of such polymers
-
- 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
- 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
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/06—Other polishing compositions
- C09G1/14—Other polishing compositions based on non-waxy substances
- C09G1/16—Other polishing compositions based on non-waxy substances on natural or synthetic resins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- the present invention relates to a coating layer and a coating layer forming method, and more particularly to a coating layer applied to a base material such as a vehicle exterior and a method for forming the coating layer.
- Patent Document 1 A method for polishing a painted surface of a vehicle (Patent Document 2), comprising a water-based emulsion containing dimethyl silicone oil and an amino-modified silicone oil, applying and drying a polishing agent on the painted surface of the vehicle, and amino-modified silicone oil
- Patent Document 3 A method of forming a water-slidable coating film made of silicone on a substrate surface by applying an anionic silica fine particle dispersion after coating the emulsion on the base surface is known (Patent Document 3).
- an agent mainly composed of amino-modified silicone oil is first applied to a substrate, for example, a vehicle painted surface.
- a substrate for example, a vehicle painted surface.
- two different types of agents are overcoated, but the preservability of each agent is insufficient, and there is a problem in workability when applying each agent.
- Patent Document 4 describes a polishing water repellent composition containing dimethylpolysiloxane, amino-modified dimethylpolysiloxane, and acids, alcohols and water in amounts necessary for neutralization of amino-modified dimethylpolysiloxane.
- Patent Document 5 describes a vehicle coating agent containing a predetermined amount of a moisture curable silicone oligomer, a curing catalyst, and a both-end type reactive silicone oil.
- the reactive functional group contained in the both-end type reactive silicone oil includes a hydroxyl group, a carbinol group (—R 5 OH, R 5 represents an alkylene group), an aminoalkyl group (—R 6 NH 2 , R 6 represents an alkylene group) and a carboxyalkyl group (—R 7 COOH, R 7 represents an alkylene group).
- Patent Document 6 discloses polydimethylsiloxane having trifunctional hydrolyzable groups at both ends, partially hydrolyzed condensate of alkoxysilane having 1 to 4 hydrolyzable groups, organotitanium catalyst, aliphatic carbonization.
- a water-repellent coating silicone composition comprising a hydrogen solvent, an ester solvent, or an alcohol solvent is described.
- Patent Document 7 discloses an emulsion type in which a predetermined amount of amino-modified silicone oil and dimethyl silicone oil having a predetermined viscosity at 25 ° C. is dispersed in water, and the average particle diameter of oil droplets is a predetermined value. A polish is described.
- Patent Document 8 describes a water repellent composition comprising a both-end-type reactive polyorganosiloxane, a metal alkoxide curing catalyst, and an alcohol solvent.
- Patent Document 9 describes a surface water-repellent protective agent containing a predetermined amount of a moisture-curable liquid silicone oligomer, a curing catalyst, a linear modified polydimethylsiloxane containing both terminal silanol groups, and a predetermined volatile solvent. Yes.
- Patent Document 10 describes a water repellent treatment agent comprising a silicone emulsion emulsified with a silicone containing amino-modified silicone, a water-soluble organic solvent such as alcohol, and a surfactant.
- the water-repellent treatment agent does not require a conventional ground treatment or the like, and directly applies the agent to a substrate to exhibit good water repellency alone. These agents are so-called one-part water-repellent treatment agents.
- a surfactant or acid is used in the agent, the adhesion to the coating film is deteriorated, and the water repellency and gloss are sufficient. There were problems such as not.
- the present invention provides a coating layer capable of imparting excellent water repellency and good gloss to a substrate such as a vehicle exterior, and is excellent in storage stability and dispersibility of the agent used, and Provided is a method for forming a coating layer, which not only has excellent workability at the time of application, but also allows the obtained coating layer to impart excellent water repellency and good gloss to a substrate such as a vehicle exterior. Is.
- the present inventor examined what problems exist in various conventional coating agents and coating methods.
- two different types of agents are overcoated, and an agent mainly composed of amino-modified silicone oil is first applied to a substrate, for example, a vehicle painted surface.
- the storage stability of each agent was insufficient, and it was found that there was a problem in workability when applying each agent.
- the one-component water repellent treatment agent as described above has a problem that water repellency and gloss cannot be sufficiently increased.
- a one-part water-repellent treatment agent that is, a surface that does not undergo overcoating, no matter how carefully and carefully it is treated, etc. It has been found that the improvement in water repellency and gloss is limited because the inhomogeneous portion occurring in the film cannot be removed.
- the present inventor further studied from the viewpoints described above and, in particular, from what viewpoint can be obtained a coating layer having suitable water repellency and gloss when combined, and the following predetermined ones were obtained.
- the two layers are combined to form two layers, the two layers interact, and the resulting coating layer has excellent water repellency and good gloss.
- the agent to be applied is excellent in storage stability and dispersibility, has no odor, and has excellent workability at the time of application, and the present invention has been completed. .
- the present invention (1) (a-1) 3 to 45 parts by mass of a polyorganosiloxane having one or more hydrolyzable functional groups in the molecule, (A-2) Curing catalyst 0.05 to 5 parts by mass, and (a-3) a saturated hydrocarbon solvent having 8 to 15 carbon atoms and an aromatic hydrocarbon solvent having 8 to 15 carbon atoms, A film-forming agent (A) comprising a total of 100 parts by mass of an organic solvent having a mass ratio of a saturated hydrocarbon solvent to the aromatic hydrocarbon solvent of 100/0 to 50/50 of 50 to 96.95 parts by mass Layer (I) obtained by curing And (B-1) A polyorganosiloxane having one or more amino groups in the molecular side chain (provided that (b-2) has no amino group at the molecular chain end when (b-2) has an amino group in the molecular side chain.
- (2) The coating layer according to the above (1), comprising the layer (I) on the substrate and the layer (II) thereon.
- (3) The above (1) or (2), wherein the layer (I) has a thickness of 0.1 to 0.5 ⁇ m and the layer (II) has a thickness of 0.1 to 0.5 ⁇ m Coating layer, (4) The coating according to any one of (1) to (3) above, wherein the amount of component (a-1) is 5 to 45 parts by mass in 100 parts by mass of the film-forming agent (A).
- layer (5) The coating according to any one of (1) to (3) above, wherein the amount of component (a-1) is 7 to 45 parts by mass in 100 parts by mass of the film forming agent (A).
- Coating layer according to any one of (10) The coating according to any one of the above (1) to (9), wherein the amount of component (b-3) is 3 to 15 parts by mass in 100 parts by mass of the finishing agent (B) layer, (11) The coating layer according to any one of (1) to (10) above, wherein the saturated hydrocarbon solvent having 8 to 15 carbon atoms constituting component (a-3) is an isoparaffin solvent.
- the present invention also provides (18) (a-1) 3 to 45 parts by mass of a polyorganosiloxane having one or more hydrolyzable functional groups in the molecule, (A-2) Curing catalyst 0.05 to 5 parts by mass, and (a-3) a saturated hydrocarbon solvent having 8 to 15 carbon atoms and an aromatic hydrocarbon solvent having 8 to 15 carbon atoms, A film-forming agent (A) comprising a total of 100 parts by mass of an organic solvent having a mass ratio of a saturated hydrocarbon solvent to the aromatic hydrocarbon solvent of 100/0 to 50/50 of 50 to 96.95 parts by mass Applying to the substrate and then drying at ambient temperature for 5 to 90 minutes to form layer (I), And (B-1) A polyorganosiloxane having one or more amino groups in the molecular side chain (provided that (b-2) has no amino group at the molecular chain end when (b-2) has an amino group in the molecular side chain.
- (19) The coating agent (A) is applied in the step (I) using a dry cloth, and the finishing agent (B) is applied in the step (II) using a compress.
- the coating layer forming method according to (18) above, (20) The coating layer forming method according to the above (18) or (19), wherein the amount of the film forming agent (A) used in the step (I) is 0.1 to 10 ml per 1 m 2 of the base material.
- (21) The coating according to any one of (18) to (20) above, wherein the amount of the finishing agent (B) used in step (II) is 0.1 to 10 ml per 1 m 2 of the base material.
- Layer forming method (22) The coating according to any one of (18) to (21) above, wherein the amount of component (a-1) is 5 to 45 parts by mass in 100 parts by mass of the film forming agent (A).
- Layer forming method (23) The coating according to any one of the above (18) to (21), wherein the amount of component (a-1) is 7 to 45 parts by mass in 100 parts by mass of the film forming agent (A)
- Layer forming method (24) The coating according to any one of (18) to (21) above, wherein the amount of component (a-1) is 7 to 30 parts by mass in 100 parts by mass of the film forming agent (A).
- the amount of component (b-1) is 0.1 to 5 parts by mass in 100 parts by mass of the finishing agent (B), according to any one of the above (18) to (24) Coating layer forming method, (26)
- the amount of component (b-2) is 0.1 to 3 parts by mass in 100 parts by mass of the finishing agent (B), according to any one of the above (18) to (25) Coating layer forming method, (27)
- the total amount of components (b-1) and (b-2) is 0.06 to 20 parts by mass in 100 parts by mass of the finishing agent (B).
- the coating layer forming method according to any one of (28) The coating according to any one of the above (18) to (27), wherein the blending amount of the component (b-3) is 3 to 15 parts by mass in 100 parts by mass of the finishing agent (B).
- Layer forming method, (29) The coating layer forming method according to any one of (18) to (28), wherein the saturated hydrocarbon solvent having 8 to 15 carbon atoms constituting component (a-3) is an isoparaffin solvent.
- the coating layer of the present invention can impart excellent water repellency and good gloss to a substrate such as a vehicle exterior.
- the coating layer forming method of the present invention is not only excellent in storage stability and dispersibility of the agent used and excellent in workability at the time of application, but the obtained coating layer is a substrate, for example, a vehicle exterior. For example, it can impart excellent water repellency and good gloss.
- the coating layer of the present invention comprises at least a layer (I) obtained by curing the film forming agent (A) and a layer (II) obtained by solidifying the finishing agent (B), and a substrate.
- Layer (I) is provided on the side, and layer (II) is provided on the surface side, that is, on the side closer to the atmosphere as compared with layer (I).
- the film forming agent (A) comprises (a-1) a polyorganosiloxane having one or more hydrolyzable functional groups in the molecule, (a-2) a curing catalyst, and (a-3) carbon number.
- the finishing agent (B) comprises (b-1) a polyorganosiloxane having one or more amino groups in the molecular side chain (provided that (b-2) has an amino group in the molecular side chain, the molecular chain (B-2) polyorganosiloxane having two or more amino groups at the end of the molecular chain, (b-3) emulsified with a nonionic or anionic surfactant.
- the (a-1) polyorganosiloxane contained in the film forming agent (A) may be any one having at least one hydrolyzable functional group in the molecule.
- the number of hydrolyzable functional groups is preferably 2-6.
- the hydrolyzable functional group may be present at either the main chain end or the side chain of the polyorganosiloxane molecule. Since it is excellent in strength after film formation, it is preferably present at the end of the molecular chain.
- Examples of the hydrolyzable functional group include an alkoxy group, an aminoxy group, a ketoxime group, an alkenyloxy group, an amide group, and an acetoxy group.
- a preferable hydrolyzable functional group is an alkoxy group, more preferably a methoxy group, an ethoxy group, or a propoxy group.
- Component (a-1) is preferably a polyorganosiloxane having a hydrolyzable functional group at both ends of the molecular chain, more preferably a methoxy group.
- the viscosity (25 ° C.) of the component (a-1) is a value measured according to JIS Z 8803, and the upper limit is preferably 1,000 mm 2 s ⁇ 1 , more preferably 500 mm 2 s ⁇ 1. Is preferably 10 mm 2 s ⁇ 1 , more preferably 50 mm 2 s ⁇ 1 .
- the curing catalyst is preferably an organometallic compound.
- organometallic compound for example, various compounds such as tin, titanium, aluminum, zirconium, lead and the like can be used.
- the tin compound include tin octylate, dibutyltin diacetate, dibutyltin dioctylate, dibutyltin dilaurate, dibutyltin malate, and dibutyltin bisoctyloxycarbonylmethylthiolate.
- titanium compounds include tetrabutyl titanate, tetramethoxy titanium, tetraethoxy titanium, tetrapropoxy titanium, tetraisopropoxy titanium, tetrabutoxy titanium, tetrakis (ethylene glycol monomethyl ether) titanate, tetrakis (ethylene glycol monoethyl ether) titanate. Tetrakis (ethylene glycol monobutyl ether) titanate, diisopropoxybis (acetylacetonate) titanate, diisopropoxybis (ethylacetoacetate) titanate, tetrakis (2-butoxyethyl alcoholate) titanate, and the like.
- Examples of the aluminum compound include trimethoxyaluminum, triethoxyaluminum, triisopropoxyaluminum, diisopropoxy (ethylacetoacetate) aluminum, isopropoxybis (ethylacetoacetate) aluminum, tris (ethylacetoacetate) aluminum, tris ( Acetylacetone) aluminum and the like.
- zirconium compounds include acetylacetone zirconium, triscetylacetone zirconium, tetrakis (ethylene glycol monomethyl ether) zirconium, tetrakis (ethylene glycol monoethyl ether) zirconium, tetrakis (ethylene glycol monobutyl ether) zirconium, dibutoxybis (ethyl acetoacetate) zirconium. And tetrakis (2-butoxyethyl alcoholate) zirconium.
- the lead compound include lead octylate and lead naphthenate. These compounds are not particularly limited as long as they can impart desired properties to the finally formed coating layer.
- a titanium compound is preferably used.
- the (a-2) curing catalyst further includes (a-1) a compound that causes a curing reaction to polyorganosiloxane having one or more hydrolyzable functional groups in the molecule.
- the upper limit of the compounding amount of the compound is preferably 10 parts by weight, more preferably 5 parts by weight, and the lower limit is preferably 0.001 parts by weight, more preferably 0.01 parts by weight with respect to 100 parts by weight of the organometallic compound. Part by mass.
- Examples of the compound include butylamine, dibutylamine, hexylamine, t-butylamine, ethylenediamine, triethylamine, ethanolamine, diethanolamine, triethanolamine, ethylenediamine, triethylenediamine, imidazole, isophoronediamine, ammonia, sodium hydroxide, hydroxide
- Examples include potassium, phosphoric acid, monoalkyl phosphoric acid, dialkyl phosphoric acid, monoalkyl phosphorous acid, dialkyl phosphorous acid, p-toluenesulfonic acid, trichloroacetic acid, and fluorine compounds. In the present invention, these can be appropriately selected and used.
- the organic solvent is composed of a saturated hydrocarbon solvent having 8 to 15 carbon atoms and an aromatic hydrocarbon solvent having 8 to 15 carbon atoms as an optional component.
- the mass ratio of the saturated hydrocarbon solvent having 8 to 15 carbon atoms and the aromatic hydrocarbon solvent having 8 to 15 carbon atoms is preferably 100/0 to 50/50, more preferably from the viewpoint of odor and volatility. 100/0 to 80/20, more preferably 100/0.
- Component (a-3) dissolves and disperses components (a-1) and (a-2) described above, and is substantially present in layer (I) by evaporation after coating. It is something that does not.
- the saturated hydrocarbon solvent has 8 to 15 carbon atoms
- the components (a-1) and (a-2) can be dissolved and dispersed well.
- the balance between the volatility and the viscosity which greatly affects the workability during application, can be improved. If the number of carbon atoms is less than the above lower limit, the volatility is too high, and the coating operation must be performed extremely quickly, resulting in poor workability. On the other hand, if the number of carbons exceeds the above upper limit, the volatility decreases, and not only does it take a long time to move to the subsequent step, for example, the application of the finishing agent (B), but also the obtained film forming agent.
- the viscosity of (A) becomes high, and it becomes difficult to form a smooth coating film when the agent is applied manually.
- the solvent include n-octane, iso-octane, n-nonane, iso-nonane, n-decane, iso-decane, n-undecane, iso-undecane, n-dodecane, iso-dodecane, n-tridecane.
- an isoparaffin-based solvent is preferably used. These solvents may be used alone or in combination. In order to adjust flash point, volatility, etc., it can select suitably.
- the aromatic hydrocarbon solvent having 8 to 15 carbon atoms is an organic solvent composed of a compound having an aromatic ring other than the saturated hydrocarbon solvent, and the carbon number of the main component in the distillate fraction of crude oil. Is in the range of 8-15.
- Ipsol 100 mainly composed of aromatic hydrocarbons having 9 carbon atoms
- Ipsol 150 carbon number
- SWAZOL 1000 manufactured by Maruzen Petrochemical Co., Ltd.
- (A-1) a polyorganosiloxane having one or more hydrolyzable functional groups in the molecule, (a-2) a curing catalyst, and (a-3) a saturated hydrocarbon solvent having 8 to 15 carbon atoms
- the blending amount of the organic solvent consisting of the aromatic hydrocarbon solvent having 8 to 15 carbon atoms as an optional component is as follows.
- the blending amount of component (a-1) is 45 parts by mass, preferably 30 parts by mass with respect to 100 parts by mass in total of components (a-1), (a-2), and (a-3).
- the lower limit is 3 parts by mass, preferably 5 parts by mass, more preferably 7 parts by mass. If it is less than the lower limit, a tough cured film cannot be formed. If the upper limit is exceeded, workability at the time of application decreases, and in addition, it becomes difficult to form a smooth film.
- the blending amount of component (a-2) is 5 parts by mass, preferably 3 parts by mass with respect to 100 parts by mass in total of components (a-1), (a-2) and (a-3).
- the lower limit is 0.05 parts by mass, preferably 0.5 parts by mass. If it is less than the said minimum, hardening will become inadequate and a favorable film will not be formed, on the other hand, if it exceeds the said upper limit, the storage stability of a film formation agent (A) will worsen.
- the amount of component (a-3) is adjusted so that the sum of components (a-1), (a-2), and (a-3) is 100 parts by mass. That is, the upper limit of the amount of component (a-3) is 96.95 parts by weight, preferably 100 parts by weight in total of components (a-1), (a-2), and (a-3). Is 95 parts by mass, and the lower limit is 50 parts by mass. If it is less than the said minimum, since the viscosity of a film formation agent (A) will become high too much, it will become difficult to form a smooth film.
- the layer (I) obtained by curing the film forming agent (A) containing the components (a-1), (a-2) and (a-3) is provided on the substrate side.
- the film-forming agent (A) can form the layer (I) by being applied to a substrate directly or via another layer and cured.
- the film forming agent (A) is preferably applied directly onto the substrate.
- the component (a-1) exhibits strong adhesion due to a chemical reaction with the member to be coated.
- the component (a-1) itself undergoes a crosslinking reaction and is cured, thereby imparting particularly excellent water repellency to the entire coating layer.
- the (b-1) polyorganosiloxane contained in the finishing agent (B) may be any one having at least one amino group in the molecular side chain.
- (b-1) may have an amino group at the end of the molecular chain, but when (b-2) below has an amino group in the molecular side chain, (b-1) Does not have two or more amino groups.
- (b-2) below has one or more amino groups in the molecular side chain and two or more amino groups at the molecular chain end, (b-1) And has no or one amino group at the molecular chain terminal, and the following (b-2) has no amino group in the molecular side chain and amino group at the molecular chain terminal.
- the component (b-1) has one or more amino groups in the molecular side chain and no or one amino group at the molecular chain end.
- the component (b-1) is obtained by bringing the layer (II) obtained by applying the finishing agent (B) into close contact with the layer (I) obtained by applying the film forming agent (A). Water repellency is expressed in the entire coating layer.
- the upper limit of the functional group equivalent of component (b-1) polyorganosiloxane is preferably 100,000, more preferably 10,000, and the lower limit is preferably 300, more preferably 500.
- the component (b-2) polyorganosiloxane of the present invention only needs to have two or more amino groups at the end of the molecular chain.
- the component (b-2) causes the entire coating layer to exhibit water repellency together with the component (b-1).
- the upper limit of the functional group equivalent of the component (b-2) polyorganosiloxane is preferably 10,000, more preferably 5,000, and the lower limit is preferably 50, more preferably 100.
- the viscosity (25 ° C.) of the component (b-2) is a value measured according to JIS Z 8803, and the upper limit is preferably 1,000 mm 2 s ⁇ 1 , more preferably 500 mm 2 s ⁇ 1 .
- the lower limit is preferably 1 mm 2 s ⁇ 1 , more preferably 10 mm 2 s ⁇ 1 . If the above upper limit is exceeded, the viscosity of the entire finishing agent (B) may be high, and a smooth and uniform layer may not be applied. A smooth and uniform layer may not be applied. As the component (b-2), one of these may be used alone, or two or more may be used in combination.
- the (b-3) silicone resin emulsion emulsified with a nonionic or anionic surfactant of the present invention is obtained by emulsifying a silicone resin having a polyorganosiloxane skeleton with a nonionic or anionic surfactant, In order to smoothen the layer (II) obtained by curing the finishing agent (B), the finishing agent (B) is provided with slipperiness.
- the component (b-3) contains a solid content of preferably 5 to 90% by mass, more preferably 10 to 50% by mass.
- the upper limit of the pH of the (b-3) silicone resin emulsion is preferably 6.4, more preferably 6.1
- the lower limit is preferably 4.0, more preferably 5.0.
- the emulsion becomes unstable, and if the pH is lower than the lower limit, the surface of the coated member may be affected.
- the component (b-3) for example, trimethylsiloxysilicic acid having a viscosity of 2,000 cSt (25 ° C.) is dissolved in dimethylpolysiloxane having a viscosity of 350 cSt, and further emulsified and dispersed in water with a nonionic surfactant.
- the hydrophilic group-containing organic solvent dissolves and disperses the above components (b-1), (b-2) and (b-3). II) is substantially absent.
- the hydrophilic group is a functional group that contributes to hydration such as OH group, COOH group, NH 2 group, etc.
- the hydrophilic group-containing organic solvent is an organic solvent composed of a compound that is compatible with water at an arbitrary ratio. That is.
- Examples of the component (b-4) include methanol, ethanol, n-propanol, iso-propanol, butanol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, methyl cellosolve, ethyl cellosolve, 1,3-butanediol. 1,4-butanediol, hexanetriol, glycerin, neopentyl glycol, pentaerythritol and other alcohols compatible with water are particularly preferably used. These solvents may be used alone or in combination. Moreover, it can select suitably from these and can adjust a viscosity, flash point, volatility, etc.
- (B-5) Water is volatilized by dissolving or dispersing the above components (b-1), (b-2), (b-3) and (b-4) constituting the finishing agent (B). Used to improve the balance between stability and storage stability, and evaporates after application and is substantially absent in layer (II).
- (B-1) a polyorganosiloxane having one or more amino groups in the molecular side chain
- (b-2) a polyorganosiloxane having two or more amino groups at the molecular chain end
- (b-3) a nonionic or anion.
- the blending amounts of the silicone resin emulsion emulsified with the surfactant, (b-4) hydrophilic group-containing organic solvent, and (b-5) water are as follows.
- the blending amount of component (b-1) is 100 parts by mass in total of components (b-1), (b-2), (b-3), (b-4), and (b-5).
- the upper limit is 15 parts by mass, preferably 5 parts by mass
- the lower limit is 0.05 parts by mass, preferably 0.1 parts by mass. If it is less than the above lower limit, desired water repellency cannot be exhibited. On the other hand, if it exceeds the above upper limit, the storage stability is lowered.
- Component (b-2) is blended in an amount of 100 parts by mass in total of components (b-1), (b-2), (b-3), (b-4), and (b-5).
- the upper limit is 10 parts by mass, preferably 3 parts by mass
- the lower limit is 0.01 parts by mass, preferably 0.1 parts by mass. If it is less than the lower limit, good gloss cannot be exhibited. On the other hand, if the above upper limit is exceeded, the storage stability may be lowered.
- the upper limit of the total amount of components (b-1) and (b-2) is preferably 20 parts by weight.
- the blending amount of component (b-3) is 100 parts by mass in total of components (b-1), (b-2), (b-3), (b-4), and (b-5).
- the upper limit is 20 parts by mass, preferably 15 parts by mass
- the lower limit is 1 part by mass, preferably 3 parts by mass. If the amount is less than the above lower limit, the desired slip property cannot be exhibited. On the other hand, if the amount exceeds the above upper limit, the finishing agent (B) aggregates and storage stability is lowered.
- the blending amount of component (b-4) is 100 parts by mass in total of components (b-1), (b-2), (b-3), (b-4), and (b-5).
- the upper limit is 25 parts by mass, preferably 15 parts by mass
- the lower limit is 0.1 parts by mass, preferably 1 part by mass.
- the blending amount of component (b-5) is 100 parts by mass of the sum of components (b-1), (b-2), (b-3), (b-4), and (b-5). Adjusted to be. That is, the blending amount of component (b-5) is 100 masses in total of components (b-1), (b-2), (b-3), (b-4), and (b-5).
- the upper limit is 98.84 parts by mass with respect to parts, and the lower limit is 30 parts by mass, preferably 70 parts by mass. By making it into this range, the balance between the volatility and the storage stability of the finishing agent (B) can be improved.
- various components can be mix
- examples thereof include rust preventives, preservatives, surfactants, pH adjusters, antifreeze agents, ultraviolet absorbers, and stabilizers.
- the finishing agent (B) containing the components (b-1), (b-2), (b-3), (b-4), and (b-5) is added to the layer (I).
- the layer (II) can be formed by coating on and solidifying.
- the layer (II) thus obtained can increase the volatility and gloss by interacting with the layer (I).
- the layer (II) can be a thick film, the inhomogeneous portion of the layer (I) can be filled into a smooth coating layer as a whole.
- the film forming agent (A) and the finishing agent (B) are applied onto the substrate as described below, and are cured and solidified, respectively.
- the film-forming agent (A) is preferably applied using a dry cloth onto the substrate or other layers already applied on the substrate.
- the dry cloth is usually a cloth having a moisture content of 20% or less, more preferably a moisture content of 5% or less, for example, a fabric made of synthetic fibers such as polyester, nylon, polyester / nylon composite fiber, polyurethane, polyvinyl chloride, and cotton. , Fabrics made of natural fibers such as silk, hemp, rayon, cashmere and mohair.
- a fabric made of synthetic fibers selected from polyester, nylon, and polyester / nylon composite fibers is particularly preferable.
- the amount of the film-forming agent (A) used varies depending on the type of substrate and the type of agent to be applied, but is usually 0.1 to 10 ml per 1 m 2 of application area. Application to a substrate or the like is usually carried out using a dry cloth by human power, but of course, it can also be carried out mechanically.
- the film-forming agent (A) applied in this way forms a cured film by the crosslinking reaction proceeding at ambient temperature for 5 to 90 minutes, preferably 10 to 30 minutes. In this way, the layer (I) obtained by curing the film forming agent (A) is formed.
- the thickness of the layer (I) can be appropriately changed depending on the amount of the film forming agent (A) used, but is usually 0.1 to 0.5 ⁇ m.
- a finishing agent (B) is applied onto the layer (I).
- the application of the finishing agent (B) is preferably carried out using a poultice.
- the compress the water retention rate specified in JIS L 1906 is 600% or less, more preferably in the range of 190 to 230%, and the water absorption rate specified in JIS L 1907 is 4 seconds or less, preferably 2
- Particularly preferred is a fabric containing 50% or more of water in a fabric of seconds or less.
- the cloth used as the poultice is made of synthetic fibers such as polyester, nylon, polyester / nylon composite fiber, polyurethane, polyvinyl chloride, cotton, silk, hemp, rayon, cashmere, mohair, etc. And a cloth made of natural fibers.
- the amount of the finishing agent (B) used can be changed in consideration of the smoothness of the layer (I) obtained by curing the film forming agent (A), but is usually 0 per 1 m 2 of the coating area. 1 to 10 milliliters. As described above, the application is usually carried out using a poultice by human power, but of course, it can also be carried out mechanically.
- the finish treatment agent (B) is dried and solidified at an ambient temperature for 10 minutes or more, preferably 30 minutes or more and 240 minutes or less after application to form a film. In this way, the layer (II) obtained by solidifying the finishing agent (B) is formed.
- the thickness of the layer (II) can be appropriately changed depending on the amount of the finishing agent (B) used, but is usually 0.1 to 0.5 ⁇ m.
- the type of substrate on which the coating layer is formed there are no particular limitations on the type of substrate on which the coating layer is formed.
- it is formed on the exterior of a vehicle, preferably on the painted surface of an automobile.
- the amount of the film forming agent (A) and the finishing treatment agent (B) used when applied to the painted surface of an automobile is, for example, about 50 ml for a light car and 60 to 70 ml for a normal car. It is about 80 ml for a minivan.
- a new layer may be provided by applying a film forming agent made of a composition having other film forming ability between the layer (I) and the layer (II). It is allowed that the agent is the film forming agent (A) of the present invention, that is, the film forming agent is repeatedly applied. Further, the present invention allows a new layer to be provided on the surface after the layer (II) is applied.
- KF-880 (trademark), functional group equivalent: 1,800 gmol ⁇ 1 , viscosity (value measured according to JIS Z 8803): 650 mm 2 s ⁇ 1 , has no amino group at the molecular chain end]
- NP2609 (trademark) manufactured by Asahi Kasei Wacker Silicone Co., Ltd., solid content 40%, pH 6]
- ⁇ Component (b-4): Hydrophilic group-containing organic solvent> Isopropyl alcohol (ExxonMobil IPA manufactured by ExxonMobil) (Ii) Normal propyl alcohol (normal propyl alcohol manufactured by Sankyo Chemical Co., Ltd.) (Iii) Ethanol (ethanol produced by Sankyo Chemical Co., Ltd.) (Iv) Ethylene glycol (ethylene glycol manufactured by Sankyo Chemical Co., Ltd.)
- finishing agent (B) ⁇ Preparation of finishing agent (B)> Components (b-1), (b-2), (b-3) and (b-4), and comparison components (b-1), (b-2), (b-3) and (b- 4) were stirred and mixed at room temperature using the blending ratios shown in Tables 3 and 4, respectively, to finish finishing agents (B-1) to (B-11) and comparative finishing agents (B′-1). ) To (B′-10) were prepared. Each finish and comparative finish was evaluated for dispersibility and storage stability.
- test methods used for evaluating each film-forming agent and comparative film-forming agent, and each finishing agent and comparative finishing agent are as follows.
- ⁇ Storage stability> The film forming agent (A) was filtered through a 200 mesh stainless steel sieve, and 100 ml was collected. The total amount of the collected film forming agent (A) was sealed in a glass container. Also, the finishing treatment agent (B) was filtered in the same manner as above, and 100 ml was collected. The whole amount of the collected finishing agent (B) was sealed in a polyethylene sealed container. Both the film-forming agent (A) and the finishing agent (B) were stored at 40 ° C. for 30 days, and then stored at ⁇ 5 ° C. for 30 days. Subsequently, these external appearances were visually inspected and evaluated.
- evaluation results of the film forming agent (A) and the finishing treatment agent (B) are indicated by the following symbols, respectively.
- the finishing agent (B) was filtered through a 200 mesh stainless steel sieve, and 100 ml was collected. The finishing agent (B) thus collected was sealed in a polyethylene sealed container. These were left at room temperature and evaluated by visually observing a change in appearance over time. The evaluation results are indicated by the following symbols.
- ⁇ The liquid was kept in a uniform state even after 30 days.
- ⁇ Aggregation and sedimentation were observed in 10 days or more and less than 30 days.
- X Aggregation and sedimentation were observed in less than 10 days.
- Table 1 shows formulation examples (A-1) to (A-1) to (A) in which the types and blending ratios of the components (a-1), (a-2) and (a-3) are changed with respect to the film-forming agent (A) of the present invention.
- (A-10) was shown. All showed good storage stability and odor.
- Formulation Example (A-10) is a component (a-3) comprising a solvent in which a saturated hydrocarbon solvent having a carbon number within the range of the present invention and an aromatic hydrocarbon solvent are blended at a predetermined ratio. It is what was used. Although the odor was somewhat felt, the effect of the present invention was not impaired.
- Table 2 shows a formulation example (A′-2) in which the blending ratio of the components (a-1), (a-2) and (a-3) is outside the scope of the present invention, and a comparison.
- Comparative film forming agents (A′-1) and (A′-3) to (A′-9) using the components (a-1) and (a-3) are shown.
- (A′-1), (A′-3), (A′-4) and (A′-9) relatively good results were obtained in both storage stability and odor.
- other comparative film forming agents resulted in poor storage stability or odor.
- Table 3 shows the types and blends of components (b-1), (b-2), (b-3), (b-4) and (b-5) relating to the finishing agent (B) of the present invention.
- Formulation examples (B-1) to (B-11) in which the ratio was changed are shown. All showed good dispersibility and storage stability. Among these, with regard to Formulation Example (B-10), although some discoloration was observed, the effect of the present invention was not impaired.
- Example 1 to 20 and Comparative Examples 1 to 16 Film-forming agents (A-1) to (A-10) and comparative film-forming agents (A′-1) to (A′-9) prepared as described above, and finishing agent (B-1) ⁇ (B-11) and comparative finishing agents (B'-1) to (B'-10) were combined and carried out as shown in Tables 5 to 8 to facilitate wiping, water repellency (initial water repellency) , Durable water repellency and water repellency after storage) and gloss.
- Tables 5 to 8 The test methods used for evaluation of ease of wiping, water repellency and gloss are as follows.
- a dry and clean cloth (fabric made of polyester / nylon composite fiber having a yarn diameter of 1 to 5 ⁇ m, moisture: 5% or less) is used to wipe the film-forming agent into a uniform thin film.
- the black painted plate thus obtained was allowed to stand for 20 minutes in an environment of 23 ° C. and 65% RH to obtain a test piece (I) to which a film forming agent was applied.
- the fine fiber cloth was rubbed back and forth 10 times on the test piece (I) coated with the film-forming agent obtained as described above to obtain a test piece (II) treated with a finishing agent.
- the water repellency was evaluated by the following initial water repellency, durable water repellency and water repellency after storage.
- test piece (II) produced as described above and treated with the finishing agent was left for 30 minutes in an environment of 23 ° C. and 65% RH.
- the contact angle of the treated surface of the test piece was determined by an automatic contact angle meter device (automatic contact angle meter DM500 (trademark) manufactured by Kyowa Interface Chemical Co., Ltd., droplet: 0.2 microliter, pure water, measurement: ⁇ / 2 method. ) To measure and evaluate.
- the evaluation results are indicated by the following symbols.
- test piece (II) produced as described above and treated with the finishing agent was left for 1 day in an environment of 23 ° C. and 65% RH.
- the test piece was subjected to ASTMG154 accelerated weathering tester (ALBUS Co., Ltd., UC-1 type (trademark), using a fluorescent UV lamp, 1 cycle: UV irradiation (60 ° C. ⁇ 8 hours) + watering (50 ° C. ⁇ 4 Time)), treated for 1,000 hours, taken out, and evaluated by measuring the contact angle under the same conditions as the initial water repellency evaluation.
- the evaluation results are indicated by the following symbols.
- the test piece (II) produced as described above and treated with the finishing agent was left for 30 minutes in an environment of 23 ° C. and 65% RH.
- the gloss of the treated surface of the test piece was measured according to the specular gloss measurement method specified in JIS Z 8741.
- the specular gloss measuring apparatus used for the measurement was a gloss checker IG-331 (trademark) manufactured by Horiba.
- the evaluation results are indicated by the following symbols.
- the measured value is less than 80 °
- Comparative Example 1 is not subjected to treatment with a finishing agent.
- the film-forming agent was applied to form a uniform thin film as described above, and after 10 minutes, the surface was lightly rubbed with a clean dry fine fiber cloth.
- the initial water repellency was evaluated by measuring the contact angle using the same automatic contact angle meter as described above.
- the durable water repellency was treated in the same manner as in the initial water repellency of Comparative Example 1 above, and further allowed to stand in an environment of 23 ° C.
- the contact angle was measured and evaluated using the same automatic contact angle meter as described above.
- the film forming agent (A) whose storage stability was evaluated was used, and the film forming agent was formed into a uniform thin film as in the case of the initial water repellency of Comparative Example 1 above. After 10 minutes from application, the surface is lightly rubbed with a dry clean fine fiber cloth, and then left for 1 day in an environment of 23 ° C. and 65% RH. Used to measure and evaluate the contact angle.
- the test piece was allowed to stand in an environment of 23 ° C. and 65% RH for 30 minutes in the same manner as the gloss evaluation. It measured using the glossiness measuring apparatus.
- the treatment with the film forming agent (A) was not performed, and the black coating plate was directly subjected to the finishing treatment (B).
- the coating agent (A-1) was applied using a dry and clean cloth in the same manner as described in the item of easy wiping. Furthermore, a new dry cloth of the same type was used and a treatment with the finishing treatment agent (B-1) was performed.
- a film-forming agent (A-1) was prepared by using a fine fiber cloth wetted with water in the same manner as described in the item of ease of wiping. After the coating, a fine fiber cloth wetted with the same type of fresh water was used to perform the treatment with the finishing treatment agent (B-1).
- Examples 1 to 10 shown in Table 5 the formulation examples (A-1) to (A-10) shown in Table 1 were used as the film forming agent (A), and the finishing agent (B) As shown in FIG. 3, the formulation example (B-1) shown in Table 3 was used. All showed good properties. On the other hand, the comparative example 1 did not use a finishing agent (B). It was found that a coating layer having good properties could not be obtained only with the film forming agent (A), and a coating layer having extremely good properties could be obtained when combined with the finishing agent (B) of the present invention.
- Examples 11 to 20 shown in Table 6 use the formulation example (A-1) shown in Table 1 as the film forming agent (A), and show in Table 3 as the finishing agent (B).
- Formulation examples (B-2) to (B-11) are used. In any case, the obtained coating layer exhibited good properties. On the other hand, in Comparative Example 2, the film forming agent (A) was not used. Even when only the finishing agent (B) was used, it was found that a coating layer having good properties could not be obtained unless it was used in combination with the film forming agent (A).
- Comparative Examples 3 to 6 in Table 7 show that the finishing agent (B-1) of the present invention and the comparative film forming agents (A′-1), (A′-3), (A′-4) and ( A′-9).
- the comparative film-forming agents (A′-1), (A′-3), (A′-4) and (A′-9) had relatively good storage stability and odor, The properties of the resulting coating layer were not good.
- Comparative Examples 7 to 12 in Table 8 are combinations of the film forming agent (A-1) of the present invention and the comparative finishing agents (B′-1) to (B′-6).
- the comparative finishing agents (B′-1) to (B′-6) obtained good results in both dispersibility and storage stability, but the properties of the resulting coating layers were not good. It was.
- Comparative Example 13 a comparative film forming agent (A′-1) and a comparative finishing agent (B′-1) were used in combination.
- (A′-1) was good in both storage stability and odor, and (B′-1) was also good in dispersibility and storage stability, but the properties of the coating layer obtained from these were remarkably high. It was bad.
- Comparative Example 14 uses the film-forming agent (A-1) and the finishing agent (B-1) of the present invention, and first, (B-1) is applied onto a substrate, (A-1) is applied. The properties of the resulting coating layer were extremely poor.
- Comparative Examples 15 and 16 both use the film-forming agent (A-1) and the finishing agent (B-1) of the present invention.
- Comparative Example 15 a dry cloth was used and treated with the finishing agent (B-1).
- Comparative Example 16 a fine fiber cloth wetted with water was used to form a film forming agent. (A-1) is applied. In any case, the properties of the obtained coating layer were poor.
- the coating layer of the present invention can impart excellent water repellency and good gloss to a substrate such as a vehicle exterior.
- the coating layer forming method of the present invention is not only excellent in storage stability of the agent used and excellent in workability at the time of application, but the obtained coating layer can be applied to a substrate such as a vehicle exterior. Excellent water repellency and good gloss can be imparted. Therefore, it is expected that the coating layer and the method for forming the coating layer of the present invention will be greatly used in the future for coating of automobile exteriors and the like.
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Abstract
Description
(1)(a-1)分子内に加水分解性官能基を1つ以上有するポリオルガノシロキサン 3~45質量部、
(a-2)硬化触媒 0.05~5質量部、及び
(a-3)炭素数8~15の飽和炭化水素系溶剤と炭素数8~15の芳香族炭化水素系溶剤とから成り、上記飽和炭化水素系溶剤と上記芳香族炭化水素系溶剤との質量比が100/0~50/50である有機溶剤 50~96.95質量部
の合計100質量部を含む被膜形成剤(A)
を硬化して得られる層(I)、
並びに、
(b-1)分子側鎖にアミノ基を1つ以上有するポリオルガノシロキサン(但し、(b-2)が分子側鎖にアミノ基を有するときは分子鎖末端にアミノ基を2つ以上有しない。) 0.05~15質量部、
(b-2)分子鎖末端にアミノ基を2つ以上有するポリオルガノシロキサン 0.01~10質量部、
(b-3)ノニオン系又はアニオン系界面活性剤により乳化されたシリコーン樹脂エマルジョン 固形分として1~20質量部、
(b-4)親水性基含有有機溶剤 0.1~25質量部、及び
(b-5)水 30~98.84質量部
の合計100質量部を含む仕上げ処理剤(B)
を固化して得られる層(II)
を少なくとも備え、かつ、基材側に層(I)を備え、表面側に層(II)を備えるコーティング層である。
(2)基材上に層(I)を備え、かつ、その上に層(II)を備える、上記(1)記載のコーティング層、
(3)層(I)の厚さが0.1~0.5μmであり、かつ、層(II)の厚さが0.1~0.5μmである、上記(1)又は(2)記載のコーティング層、
(4)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、5~45質量部である、上記(1)~(3)のいずれか一つに記載のコーティング層、
(5)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、7~45質量部である、上記(1)~(3)のいずれか一つに記載のコーティング層、
(6)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、7~30質量部である、上記(1)~(3)のいずれか一つに記載のコーティング層、
(7)成分(b-1)の配合量が、仕上げ処理剤(B)100質量部中、0.1~5質量部である、上記(1)~(6)のいずれか一つに記載のコーティング層、
(8)成分(b-2)の配合量が、仕上げ処理剤(B)100質量部中、0.1~3質量部である、上記(1)~(7)のいずれか一つに記載のコーティング層、
(9)成分(b-1)及び(b-2)の配合量の合計が、仕上げ処理剤(B)100質量部中、0.06~20質量部である、上記(1)~(8)のいずれか一つに記載のコーティング層、
(10)成分(b-3)の配合量が、仕上げ処理剤(B)100質量部中、3~15質量部である、上記(1)~(9)のいずれか一つに記載のコーティング層、
(11)成分(a-3)を構成する炭素数8~15の飽和炭化水素系溶剤がイソパラフィン系溶剤である、上記(1)~(10)のいずれか一つに記載のコーティング層、
(12)成分(a-3)が、炭素数8~15の飽和炭化水素系溶剤100質量部より成る、上記(1)~(11)のいずれか一つに記載のコーティング層、
(13)成分(b-4)がアルコールである、上記(1)~(12)のいずれか一つに記載のコーティング層、
(14)成分(a-1)が、分子鎖両末端に加水分解性官能基を有するポリジメチルシロキサンである、上記(1)~(13)のいずれか一つに記載のコーティング層、
(15)成分(a-1)が、分子鎖両末端メトキシ基含有ポリジメチルシロキサンである、上記(1)~(13)のいずれか一つに記載のコーティング層、
(16)成分(a-2)が、有機金属化合物である、上記(1)~(15)のいずれか一つに記載のコーティング層、
(17)基材が車両外装である、上記(1)~(16)のいずれか一つに記載のコーティング層
を挙げることができる。
(18)(a-1)分子内に加水分解性官能基を1つ以上有するポリオルガノシロキサン 3~45質量部、
(a-2)硬化触媒 0.05~5質量部、及び
(a-3)炭素数8~15の飽和炭化水素系溶剤と炭素数8~15の芳香族炭化水素系溶剤とから成り、上記飽和炭化水素系溶剤と上記芳香族炭化水素系溶剤との質量比が100/0~50/50である有機溶剤 50~96.95質量部
の合計100質量部を含む被膜形成剤(A)
を、基材上に塗布し、次いで、5~90分間環境温度で乾燥して層(I)を形成する工程(I)、
並びに、
(b-1)分子側鎖にアミノ基を1つ以上有するポリオルガノシロキサン(但し、(b-2)が分子側鎖にアミノ基を有するときは分子鎖末端にアミノ基を2つ以上有しない。) 0.05~15質量部、
(b-2)分子鎖末端にアミノ基を2つ以上有するポリオルガノシロキサン 0.01~10質量部、
(b-3)ノニオン系又はアニオン系界面活性剤により乳化されたシリコーン樹脂エマルジョン 固形分として1~20質量部、
(b-4)親水性基含有有機溶剤 0.1~25質量部、及び
(b-5)水 30~98.84質量部
の合計100質量部を含む仕上げ処理剤(B)
を、上記の層(I)上に塗布し、次いで、10分間以上環境温度で乾燥して層(II)を形成する工程(II)
を少なくとも含む、コーティング層形成方法である。
(19)工程(I)における被膜形成剤(A)の塗布が、乾布を使用して実施され、かつ、工程(II)における仕上げ処理剤(B)の塗布が、湿布を使用して実施される、上記(18)記載のコーティング層形成方法、
(20)工程(I)における被膜形成剤(A)の使用量が、基材1m2当たり0.1~10ミリリットルである、上記(18)又は(19)記載のコーティング層形成方法、
(21)工程(II)における仕上げ処理剤(B)の使用量が、基材1m2当たり0.1~10ミリリットルである、上記(18)~(20)のいずれか一つに記載のコーティング層形成方法、
(22)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、5~45質量部である、上記(18)~(21)のいずれか一つに記載のコーティング層形成方法、
(23)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、7~45質量部である、上記(18)~(21)のいずれか一つに記載のコーティング層形成方法、
(24)成分(a-1)の配合量が、被膜形成剤(A)100質量部中、7~30質量部である、上記(18)~(21)のいずれか一つに記載のコーティング層形成方法、
(25)成分(b-1)の配合量が、仕上げ処理剤(B)100質量部中、0.1~5質量部である、上記(18)~(24)のいずれか一つに記載のコーティング層形成方法、
(26)成分(b-2)の配合量が、仕上げ処理剤(B)100質量部中、0.1~3質量部である、上記(18)~(25)のいずれか一つに記載のコーティング層形成方法、
(27)成分(b-1)及び(b-2)の配合量の合計が、仕上げ処理剤(B)100質量部中、0.06~20質量部である、上記(18)~(26)のいずれか一つに記載のコーティング層形成方法、
(28)成分(b-3)の配合量が、仕上げ処理剤(B)100質量部中、3~15質量部である、上記(18)~(27)のいずれか一つに記載のコーティング層形成方法、
(29)成分(a-3)を構成する炭素数8~15の飽和炭化水素系溶剤がイソパラフィン系溶剤である、上記(18)~(28)のいずれか一つに記載のコーティング層形成方法、
(30)成分(a-3)が、炭素数8~15の飽和炭化水素系溶剤100質量部より成る、上記(18)~(29)のいずれか一つに記載のコーティング層、
(31)成分(b-4)がアルコールである、上記(18)~(30)のいずれか一つに記載のコーティング層形成方法、
(32)成分(a-1)が、分子鎖両末端に加水分解性官能基を有するポリジメチルシロキサンである、上記(18)~(31)のいずれか一つに記載のコーティング層、
(33)成分(a-1)が、分子鎖両末端メトキシ基含有ポリジメチルシロキサンである、上記(18)~(31)のいずれか一つに記載のコーティング層形成方法、
(34)成分(a-2)が、有機金属化合物である、上記(18)~(33)のいずれか一つに記載のコーティング層形成方法、
(35)基材が車両外装である、上記(18)~(34)のいずれか一つに記載のコーティング層形成方法、
を挙げることができる。
物質
被膜形成剤(A)及び仕上げ処理剤(B)の調製に使用した物質は下記の通りである。
(i)メトキシ官能性ポリジメチルシロキサン[信越化学工業株式会社製X-40-9225(商標)、分子側鎖と分子鎖両末端にメトキシ基を有するポリジメチルシロキサン、メトキシ基含有量:24重量%、粘度(JIS Z 8803に準拠して測定した値):100mm2s-1]
(ii)メトキシ官能性ポリジメチルシロキサン[信越化学工業株式会社製X-40-9250(商標)、分子側鎖と分子鎖両末端にメトキシ基を有するポリジメチルシロキサン、メトキシ基含有量:25重量%、粘度(JIS Z 8803に準拠して測定した値):160mm2s-1]
(iii)メトキシ官能性メチル/フェニル置換ポリシロキサン[信越化学工業株式会社製KR-401N(商標)、分子側鎖と分子鎖両末端にメトキシ基を有するメチル/フェニル置換ポリシロキサン、メトキシ基含有量:33重量%、粘度(JIS Z 8803に準拠して測定した値):20mm2s-1]
(iv)メトキシ官能性メチル/フェニル置換ポリシロキサン[信越化学工業株式会社製KR-510(商標)、分子側鎖と分子鎖両末端にメトキシ基を有するメチル/フェニル置換ポリシロキサン、メトキシ基含有量:17重量%、粘度(JIS Z 8803に準拠して測定した値):100mm2s-1]
(i)両末端メチル基封鎖型ポリジメチルシロキサン[信越化学工業株式会社製KF-96-100CS(商標)、粘度(JIS Z 8803に準拠して測定した値):100mm2s-1]
(i)チタンアルコキシド[信越化学工業株式会社製D-20(商標)、金属含有量:21重量%]
(ii)チタンアルコキシド[信越化学工業株式会社製D-25(商標)、金属含有量:14重量%]
(iii)アルミニウムアルコキシド[信越化学工業株式会社製DX-9740(商標)、金属含有量:9重量%]
(i)イソパラフィン系炭化水素溶剤[エクソンモービル社製アイソパーM(商標)、炭素数12~15のイソパラフィン系炭化水素を主成分とする、蒸留温度範囲:225~254℃、引火点:92℃]
(ii)イソパラフィン系炭化水素溶剤[エクソンモービル社製アイソパーL(商標)、炭素数11~13のイソパラフィン系炭化水素を主成分とする、蒸留温度範囲:185~199℃、引火点:64℃]
(iii)芳香族炭化水素系溶剤[エクソンモービル社製ソルベッソ150(商標)、炭素数8~12の芳香族炭化水素の混合物よりなる重質芳香族ソルベントナフサ、蒸留温度範囲:189~210℃、引火点:65℃]
(i)イソパラフィン系炭化水素溶剤[出光興産株式会社製IPクリーンHX(商標)、炭素数16のイソパラフィン系炭化水素を主成分とする、蒸留温度範囲:211~255℃、引火点:84℃]
(ii)イソヘキセン[炭素数6個のイソオレフィン系炭化水素、沸点:62℃、引火点:-26℃](和光純薬株式会社製イソヘキセン)
(iii)イソプロピルアルコール[エクソンモービル社製エクソンモービルIPA(商標)、蒸留温度:80℃、引火点:0℃以下]
(iv)エチレングリコールジメチルエーテル[蒸留温度:82~83℃、引火点:-1.5℃](ナカライテスク株式会社製エチレングリコールジメチルエーテル)
(i)側鎖型モノアミン変性ポリシロキサン[信越化学工業株式会社製KF-865(商標)、官能基当量:5,000gmol-1、粘度(JIS Z 8803に準拠して測定した値):110mm2s-1、分子鎖末端にアミノ基を有しない]
(ii)側鎖型ジアミン変性ポリシロキサン[信越化学工業株式会社製KF-880(商標)、官能基当量:1,800gmol-1、粘度(JIS Z 8803に準拠して測定した値):650mm2s-1、分子鎖末端にアミノ基を有しない]
(iii)側鎖型アミノポリエーテル両変性ポリシロキサン[信越化学工業株式会社製X-22-3939A(商標)、官能基当量:1,500gmol-1、粘度(JIS Z 8803に準拠して測定した値):3,300mm2s-1、分子鎖末端にアミノ基を有しない]
(i)側鎖型エポキシ変性ポリシロキサン[信越化学工業株式会社製X-22-343(商標)、官能基当量:525gmol-1、粘度(JIS Z 8803に準拠して測定した値):25mm2s-1]
(ii)側鎖型エポキシエーテル両変性ポリシロキサン[信越化学工業株式会社製X-22-4741(商標)、官能基当量:2,500gmol-1、粘度(JIS Z 8803に準拠して測定した値):350mm2s-1]
(i)末端型ジアミノ変性ポリシロキサン[信越化学工業株式会社製X-22-161B(商標)、分子鎖両末端に夫々一つアミノ基を有する、官能基当量:1,500gmol-1、粘度(JIS Z 8803に準拠して測定した値):55mm2s-1、分子側鎖にアミノ基を有しない]
(i)末端型カルボキシル変性ポリシロキサン[信越化学工業株式会社製X-22-162C(商標)、官能基当量:2,300gmol-1、粘度(JIS Z 8803に準拠して測定した値):220mm2s-1]
(ii)末端型シラノール変性ポリシロキサン[信越化学工業株式会社製KF-9701(商標)、官能基当量:1,500gmol-1、粘度(JIS Z 8803に準拠して測定した値):60mm2s-1]
(i)アニオン分散性シリコーンレジンエマルジョン[旭化成ワッカーシリコーン株式会社製R2701(商標)、固形分40%、pH6]
(ii)ノニオン分散性シリコーンレジンエマルジョン[旭化成ワッカーシリコーン株式会社製NR2706(商標)、固形分55%、pH6]
(iii)ノニオン分散性アミノ変性シリコーンレジンエマルジョン[旭化成ワッカーシリコーン株式会社製NP2609(商標)、固形分40%、pH6]
(i)カチオン分散性シリコーンレジンエマルジョン[信越化学工業株式会社製Polon MF-52(商標)、固形分32%、pH6.5]
(i)イソプロピルアルコール(エクソンモービル社製エクソンモービルIPA)
(ii)ノルマルプロピルアルコール(三協化学株式会社製ノルマルプロピルアルコール)
(iii)エタノール(三協化学株式会社製エタノール)
(iv)エチレングリコール(三協化学株式会社製エチレングリコール)
(i)エチレングリコールジメチルエーテル(日本乳化剤株式会社製ジメチルグリコール)
成分(a-1)、(a-2)及び(a-3)、並びに、比較成分(a-1)及び(a-3)を、夫々、表1及び2に示した配合比を使用して室温で撹拌混合して、被膜形成剤(A-1)~(A-10)及び比較被膜形成剤(A’-1)~(A’-9)を調製した。各被膜形成剤及び比較被膜形成剤について、保存安定性及び臭気を評価した。
成分(b-1)、(b-2)、(b-3)及び(b-4)、並びに、比較成分(b-1)、(b-2)、(b-3)及び(b-4)を、夫々、表3及び4に示した配合比を使用して室温で撹拌混合して、仕上げ処理剤(B-1)~(B-11)及び比較仕上げ処理剤(B’-1)~(B’-10)を調製した。各仕上げ処理剤及び比較仕上げ処理剤について、分散性及び保存安定性を評価した。
被膜形成剤(A)を200メッシュのステンレス製篩でろ過して100ミリリットル採取した。採取した被膜形成剤(A)の全量をガラス容器中に封入した。また、仕上げ処理剤(B)についても、上記と同一にろ過して100ミリリットル採取した。採取した仕上げ処理剤(B)の全量をポリエチレン製密閉容器中に封入した。被膜形成剤(A)及び仕上げ処理剤(B)のいずれも、40℃で30日間保存し、次いで、-5℃で30日間保存した。次いで、これらの外観を目視で検査して評価した。被膜形成剤(A)及び仕上げ処理剤(B)の評価結果を、夫々、下記の記号で示した。
被膜形成剤(A)の評価結果:
○:液の濁り、変色、沈殿、結晶物の析出のいずれも認められなかったもの
Δ:液の濁り、変色、沈殿、結晶物の析出のいずれか一つが認められたもの
×:液の濁り、変色、沈殿、結晶物の析出のいずれか二つ以上が認められたもの
仕上げ処理剤(B)の評価結果:
○:変色、分散物の凝集、液相の分離のいずれも認められなかったもの
Δ:変色、分散物の凝集、液相の分離のいずれか一つが認められたもの
×:変色、分散物の凝集、液相の分離のいずれか二つ以上が認められたもの
被膜形成剤(A)を、約20ミリリットルガラス容器に採取して密栓した。これを室温で5分間放置した後、開栓して匂いを嗅ぐことにより臭気の評価を行った。評価結果を、下記の記号で示した。
○:臭気を僅かに感じた程度のもの
Δ:臭気をやや強く感じたもの
×:臭気を非常に強く感じたもの
仕上げ処理剤(B)を200メッシュのステンレス製篩でろ過して、100ミリリットル採取した。このようにして採取した仕上げ処理剤(B)を、ポリエチレン製密閉容器中に封入した。これらを、常温で静置し、外観の経時変化を目視観察して評価を行った。評価結果を、下記の記号で示した。
○:30日間経過後も液が完全に均一な状態を保っていたもの
Δ:10日間以上30日間未満で凝集及び沈降が認められたもの
×:10日間未満で凝集及び沈降が認められたもの
上記のようにして調製した被膜形成剤(A-1)~(A-10)及び比較被膜形成剤(A’-1)~(A’-9)、並びに、仕上げ処理剤(B-1)~(B-11)及び比較仕上げ処理剤(B’-1)~(B’-10)を、表5~8に示すように組み合わせて実施し、拭き上げ易さ、撥水性(初期撥水性、耐久撥水性及び保存後撥水性)及び光沢を評価した。拭き上げ易さ、撥水性及び光沢の評価に使用した試験法は下記の通りである。
黒色塗装板(材質:SPCC-SD、規格:JIS-G-3141、寸法:0.8mm×70mm×150mm、電着後片面アクリル塗装したもの、株式会社アサヒビーテクノ製)の塗装面に、表5~8に示した被膜形成剤(A-1)~(A-10)及び比較被膜形成剤(A’-1)~(A’-9)を、スポイトを使用して3滴(約3cc)滴下した。次いで、該被膜形成剤が均一な薄膜になるように、乾燥した清浄な布(原糸径が1~5μmのポリエステル/ナイロン複合繊維からなる布帛、水分:5%以下)を使用し、拭き上げることにより塗布した。このようにして得られた黒色塗装板を、23℃、65%RH環境下で20分間放置して被膜形成剤を塗布した試験片(I)とした。
○:全く引っ掛かり感がなかったもの
Δ:多少の引っ掛かり感があったもの
×:非常に引っ掛かり感があったもの
撥水性は、下記の初期撥水性、耐久撥水性及び保存後撥水性にて評価した。
上記のようにして製造した、仕上げ処理剤で処理した試験片(II)を、23℃、65%RH環境下で30分間放置した。該試験片の処理表面の接触角を、自動接触角計装置(協和界面化学株式会社製自動接触角計DM500(商標)、液滴:0.2マイクロリットル、純水、測定:θ/2法)を使用して測定し評価した。評価結果を下記の記号で示した。
◎:接触角100°以上のもの
○:接触角100未満95°以上のもの
Δ:接触角95未満85°以上のもの
×:接触角85°未満のもの
上記のようにして製造した、仕上げ処理剤で処理した試験片(II)を、23℃、65%RH環境下で1日間放置した。次いで、該試験片を、ASTMG154促進耐候性試験機(ALTAS社製ユウブコンUC-1型(商標)、蛍光UVランプ使用、1サイクル:UV照射(60℃×8時間)+散水(50℃×4時間))に装填し、1,000時間処理した後取り出し、初期撥水性評価と同じ条件で接触角を測定し評価した。評価結果を下記の記号で示した。
◎:接触角100°以上のもの
○:接触角100未満95°以上のもの
Δ:接触角95未満85°以上のもの
×:接触角85°未満のもの
上記のようにして保存安定性を評価した被膜形成剤(A)及び仕上げ処理剤(B)を使用した。上記の拭き上げ易さの評価と同一の方法で、被膜形成剤(A)を塗布し、次いで、仕上げ処理剤(B)で処理して試験片(III)とした。該試験片(III)を、上記の初期撥水性の評価と同じ条件で接触角を測定し評価した。評価結果を下記の記号で示した。
◎:接触角100°以上のもの
○:接触角100未満95°以上のもの
Δ:接触角95未満85°以上のもの
×:接触角85°未満のもの
上記のようにして製造した、仕上げ処理剤で処理した試験片(II)を、23℃、65%RH環境下で30分間放置した。該試験片の処理表面の光沢を、JIS Z 8741に規定する鏡面光沢度測定方法に準拠して測定した。該測定に使用した鏡面光沢度測定装置は、堀場製作所製グロスチェッカーIG-331(商標)であった。評価結果を下記の記号で示した。
◎:鏡面光沢度測定値が90°以上のもの
○:鏡面光沢度測定値が85°以上90°未満のもの
Δ:鏡面光沢度測定値が80°以上85°未満のもの
×:鏡面光沢度測定値が80°未満のもの
Claims (14)
- (a-1)分子内に加水分解性官能基を1つ以上有するポリオルガノシロキサン 3~45質量部、
(a-2)硬化触媒 0.05~5質量部、及び、
(a-3)炭素数8~15の飽和炭化水素系溶剤と炭素数8~15の芳香族炭化水素系溶剤とから成り、上記飽和炭化水素系溶剤と上記芳香族炭化水素系溶剤との質量比が100/0~50/50である有機溶剤 50~96.95質量部
の合計100質量部を含む被膜形成剤(A)
を硬化して得られる層(I)、
並びに、
(b-1)分子側鎖にアミノ基を1つ以上有するポリオルガノシロキサン 0.05~15質量部、
(b-2)分子鎖末端にアミノ基を2つ以上有するポリオルガノシロキサン 0.01~10質量部、
(b-3)ノニオン系又はアニオン系界面活性剤により乳化されたシリコーン樹脂エマルジョン 固形分として1~20質量部、
(b-4)親水性基含有有機溶剤 0.1~25質量部、及び
(b-5)水 30~98.84質量部
の合計100質量部を含む仕上げ処理剤(B)
を固化して得られる層(II)
を少なくとも備え、かつ、基材側に層(I)を備え、表面側に層(II)を備えるコーティング層。 - 基材上に層(I)を備え、かつ、その上に層(II)を備える、請求項1記載のコーティング層。
- 層(I)の厚さが0.1~0.5μmであり、かつ、層(II)の厚さが0.1~0.5μmである、請求項1又は2記載のコーティング層。
- 成分(a-3)を構成する炭素数8~15の飽和炭化水素系溶剤がイソパラフィン系溶剤である、請求項1~3のいずれか一つに記載のコーティング層。
- 成分(b-4)がアルコールである、請求項1~4のいずれか一つに記載のコーティング層。
- 成分(a-1)が、分子鎖両末端に加水分解性官能基を有するポリジメチルシロキサンである、請求項1~5のいずれか一つに記載のコーティング層。
- 基材が車両外装である、請求項1~6のいずれか一つに記載のコーティング層。
- (a-1)分子内に加水分解性官能基を1つ以上有するポリオルガノシロキサン 3~45質量部、
(a-2)硬化触媒 0.05~5質量部、及び
(a-3)炭素数8~15の飽和炭化水素系溶剤と炭素数8~15の芳香族炭化水素系溶剤とから成り、上記飽和炭化水素系溶剤と上記芳香族炭化水素系溶剤との質量比が100/0~50/50である有機溶剤 50~96.95質量部
の合計100質量部を含む被膜形成剤(A)
を、基材上に塗布し、次いで、5~90分間環境温度で乾燥して層(I)を形成する工程(I)、
並びに、
(b-1)分子側鎖にアミノ基を1つ以上有するポリオルガノシロキサン 0.05~15質量部、
(b-2)分子鎖末端にアミノ基を2つ以上有するポリオルガノシロキサン 0.01~10質量部、
(b-3)ノニオン系又はアニオン系界面活性剤により乳化されたシリコーン樹脂エマルジョン 固形分として1~20質量部、
(b-4)親水性基含有有機溶剤 0.1~25質量部、及び
(b-5)水 30~98.84質量部
の合計100質量部を含む仕上げ処理剤(B)
を、上記の層(I)上に塗布し、次いで、10分間以上環境温度で乾燥して層(II)を形成する工程(II)
を少なくとも含む、コーティング層形成方法。 - 工程(I)における被膜形成剤(A)の塗布が、乾布を使用して実施され、かつ、工程(II)における仕上げ処理剤(B)の塗布が、湿布を使用して実施される、請求項8記載のコーティング層形成方法。
- 工程(I)における被膜形成剤(A)の使用量が、基材1m2当たり0.1~10ミリリットルであり、かつ、工程(II)における仕上げ処理剤(B)の使用量が、基材1m2当たり0.1~10ミリリットルである、請求項8又は9記載のコーティング層形成方法。
- 成分(a-3)を構成する炭素数8~15の飽和炭化水素系溶剤がイソパラフィン系溶剤である、請求項8~10のいずれか一つに記載のコーティング層形成方法。
- 成分(b-4)がアルコールである、請求項8~11のいずれか一つに記載のコーティング層形成方法。
- 成分(a-1)が、分子鎖両末端に加水分解性官能基を有するポリジメチルシロキサンである、請求項8~12のいずれか一つに記載のコーティング層形成方法。
- 基材が車両外装である、請求項8~13のいずれか一つに記載のコーティング層形成方法。
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