WO2006082946A1 - 水系金属材料表面処理剤、表面処理方法及び表面処理金属材料 - Google Patents
水系金属材料表面処理剤、表面処理方法及び表面処理金属材料 Download PDFInfo
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/086—Organic or non-macromolecular compounds
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/361—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/42—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/53—Treatment of zinc or alloys based thereon
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Definitions
- the present invention relates to a sheet coil made of a metal material, a metal surface treatment agent used for forming a novel film having both acid resistance and alkali resistance as well as excellent corrosion resistance and adhesion on the surface of a molded product, metal surface
- the present invention relates to a processing method and a surface-treated metal material. More specifically, the present invention is excellent in corrosion resistance in molded products, forged products, sheet coils, etc., such as automobile bodies, automobile parts, building materials, and home appliance parts made of zinc-based steel sheets, steel sheets, and aluminum-based metallic materials. This relates to the surface treatment agent, surface treatment method, and surface-treated metal material used to form a new film having both acid resistance and alkali resistance as well as adhesion. Background art
- Japanese Patent Application Laid-Open No. 2 0 1-3-5 3 7 50 describes that an aqueous dispersion resin is 5 to 30% by mass in terms of solid content and siri force particles are 0.1 to 2%.
- a one-component type water-based coating for steel is disclosed which has excellent bath stability and is suitable for coating steel such as zinc-based coated steel or uncoated steel.
- Japanese Patent Application Laid-Open No. 2 0 0 3-1.0 5 5 62 discloses a specific resin compound (A), at least one kind of cation selected from the first to third amino groups and the fourth ammonium base.
- a surface treatment agent with a cationic urethane resin (B) and silane coupling agent (C) content within the specified range, it has excellent corrosion resistance, fingerprint resistance, blackening resistance and paint adhesion.
- a chromium-free surface-treated steel sheet and a method for producing the same. . Disclosure of the invention
- the surface treatment agent that can be used as a substitute for the chromate film has not been obtained by any of these methods, and there is a strong demand for the development of surface treatment agents and treatment methods that can satisfy these requirements comprehensively. It is being done.
- the present invention solves the above-mentioned problems of the prior art, and can form a new film having both acid resistance and alkali resistance, as well as excellent corrosion resistance and adhesion on the surface of the metal material. It is an object to provide an agent, a surface treatment method using the agent, and a surface-treated metal material.
- an organosilicon compound having a specific functional group (a) and a functional group (b) at a specific ratio in one molecule By treating a metal surface with an extremely stable aqueous drug containing a resin, it is possible to form a new film that has both acid resistance and alkali resistance as well as excellent corrosion resistance and adhesion.
- the headline, the present invention has been completed.
- the formula —SiR i RSR 3 (wherein, RR 2 and R 3 independently represent an alkyl group, an alkoxy group or a hydroxyl group, and at least one represents an alkoxy group) ) And two or more functional groups (a), hydroxyl groups (separate from those that can be included in the functional group (a)), amino groups, carboxyl groups, phosphoric acid groups, phosphonic acid groups, sulfones.
- 3 ⁇ 4 (b) is contained, and the molecular weight per functional group (b) is 100-
- organic key compound examples include the following organic compound (A) and the following organic compound (B): 1926
- organosilicon compound and the latter product do not necessarily coincide with each other, and can produce a wide range and can be used effectively in the present invention.
- the present invention also includes an organic compound (A) having a functional group (I), a functional group (II) capable of reacting with the functional group (I), and the functional group (I) and / or the functional group ( II) are each a separate hydroxyl group (separate from the following functional group (a)), primary to tertiary amino groups, quaternary ammonium groups, phosphoric acid groups, phosphors
- An aqueous metal surface treatment agent comprising at least one organic polymer (Q) selected from an epoxy resin, an acrylic resin, a phenol resin, a polyester resin and a polyolefin resin, comprising an organic compound (A) and an organic compound At least one of (B) is Formula 1 S i RiRSR 3 (
- the present invention also provides a surface treatment method for a metal material, characterized in that the aqueous metal surface treatment agent is applied to the surface of a metal material and dried to form a film of 10 to 300 Omg / m 2 as S i 0 2. And a metal material surface-treated by the surface treatment method.
- the surface-treated metal material obtained by applying the aqueous metal surface treating agent of the present invention to the surface of the metal material and drying it has both acid resistance and alkali resistance as well as excellent corrosion resistance and adhesion. Best Mode for Carrying Out the Invention
- the number of functional groups (a) in the organosilicon compound (P), which is an essential component of the aqueous metal surface treatment agent (Aspect 1) of the present invention, must be 2 or more.
- the carbon number of the alkyl group and alkoxy group in the definition of R 1 , R 2 and R 3 of the functional group (a) is particularly Although not limited, it is preferably from 1 force to 6, more preferably from 1 to 4, and most preferably 1 or 2.
- the abundance ratio of the functional group (b) the molecular weight per functional group (b) needs to be 100 to 10,000, and preferably 200 to 5,000.
- the molecular weight per functional group (b) When the molecular weight per functional group (b) is less than 100, the water resistance of the formed film is remarkably lowered. On the other hand, when the molecular weight per functional group (b) is larger than 10,000, it becomes difficult to stably dissolve or disperse the organic silicon compound.
- the method for producing the organosilicon compound (P) of the present invention is not particularly limited.
- a compound having a functional group (b) in the structure may be used, or another compound having the functional group (b) may be further reacted to synthesize.
- the compound having the functional group (b) include hydroxylamine, polyhydric alcohol, amminethiolamine sulfonic acid, hydroxyphosphonic acid, amino acid and the like.
- the aqueous metal surface treatment agent of the present invention has the organic compound (A) having the functional group (I) and the functional group (II) ′ capable of reacting with the functional group (I). , 'And a functional group (I) and / or a functional group (II) that is different from those which can be contained in the functional group (II) (separate from those which can be contained in the functional group (a) below), primary to tertiary amino acids Group, quaternary ammonium group, phosphoric acid group, phosphonic acid group, sulfone group, primary amide group, secondary amide group and polyoxyethylene chain at least one hydrophilic functional group (III) An organic compound (B) containing, urethane resin, excimer, moonlight, acrylic resin, phenol resin, polyester resin and polyolefin resin An aqueous metal surface treatment agent comprising at least one organic polymer (Q) selected from fats, wherein at least one of the organic compound (A)
- the hydrophilic functional group (III) is a hydrophilic functional group and is included in the definition of the hydrophilic functional group (III) even after the reaction, the hydrophilic functional group (III) is It does not have to be. Also, the hydrophilic functional group (I I I) may be originally contained in the organic compound (B), or may be newly introduced.
- the organic compound (A) is not particularly limited, but 3-glycidoxypropinoletrimethoxysilane, 3-glycidoxypropylmethyldimethyoxysilane, and 2- (3,4 epoxy hexyl) ethyltrimethoxysilane, etc.
- Epoxysilanes such as N- (2-aminoethyl) 3-aminopropylmethyldimethyoxysilane, N- (aminoethinole) 3-aminopropyl trimethoxysilane, and 3-aminopropyltriethoxysilane, 3 —Mercaptosilanes such as mercaptopropyl trimethoxysilane, butocyanatosilanes such as 3-isocyanatepropyltrimethoxysilane, 3-isocyanatepropyltriethoxysilane, bistriethoxysilane, and p-styryltrimethoxysilane Including Epoxy compounds such as silane, sorbitol polyglycidyl ether, polyglyceryl polyglycidyl ether, penda erythritol polyglycidyl ether, tolylene diisocyanate, diphenylmethane diisocyanate, n
- the organic compound ( ⁇ ) is not particularly limited, but ⁇ - (2-aminoethyl) 3-aminopropylmethyldimethyoxysilane, ⁇ - (aminoethyl) 3-aminopropynoletrimethoxysilane, and 3-aminopropyl Amino compounds such as triethoxysilane, amine compounds such as isophorone diamine, piperazine, diphenylmethane diamine, neopentyldarlicol diglycidyl ether, 1,6-hexanediol diglycidyl ether, hydrogenated bis Polyoxyethylene adducts of epoxy compounds such as phenol ⁇ diglycidyl ether, ethanolamines, hydroxylamines such as propanolamine, polyhydric alcohols such as glycol, 2-aminoethanethiol and 2-aminopropanethiol Aminchor, sake Hydroxycarboxylic acids such as stone acid, L-a
- the organic silicon compound in the aqueous metal surface treatment agent of the present invention, or the product produced by the reaction of the organic compound (A) and the organic compound (B) is obtained by condensing two or more functional groups (a). Preferably having at least one siloxane bond.
- two or more functional groups (a) are condensed to form a siloxane bond, the molecular chain of the organosilicon compound or the product is long and has a strong branch. It becomes easy to form a film.
- the reactivity of silanol decreases due to steric hindrance and the like, and it can be more stable in water.
- the organic polymer (Q) used in the present invention is preferably at least one selected from the group consisting of urethane resin, epoxy resin, acrylic resin, phenol resin, polyester resin and polyolefin resin, and is dissolved or dispersed in water. I prefer what I have.
- urethane resins include polycondensation of polyols such as polyetherol polyol, polyesterol polyolenole, polycarbonate polynoole and aliphatic, alicyclic or aromatic polyisocyanates. Such as things.
- Phenolic resins include phenol, bisphenol A, A phenolic resin obtained by condensing a phenolic compound such as bisphenol F with formalin has a main skeleton structure, and includes not only a linear compound containing a copolymer with other monomers capable of polymerizing with phenol. Examples include compounds in a three-dimensionally condensed form.
- the epoxy resin include bisphenol type, particularly bisphenol A type epoxy compound or other glycidyl etheroleic compounds.
- the ester resin include polyester coconut, which is a polycondensation product of a polyol component such as ethylene glycol and neopentyl glycol, and a polybasic acid such as terephthalic acid and trimellitic acid.
- allyl resin for example, methyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, glycidyl methacrylate, aminoethyl methacrylate, etc.
- Nore homopolymers and copolymers and monomers copolymerizable therewith such as copolymers with styrene, acrylonitrile, maleic acid, acrylamide, N-methylol acrylamide, diarylamine and the like.
- aqueous emulsions obtained by emulsion polymerization using an activator, a reactive emulsifier, and the like
- soap-free types using a water-soluble polymer as an emulsifier can also be used.
- the polyolefin resin include those obtained by dispersing a copolymer of ethylene and acrylic acid or methacrylic acid in water using ammonia, or a copolymer of ethylene and vinyl alcohol that is forcibly emulsified with a surfactant. It is done.
- the blending amount of the organic polymer (Q) in aspect 1 is the mass ratio of the blending amount of the organic polymer (Q) to the blending amount of the organic silicon compound (P) (solid content mass ratio) QZP is 0.0. It is preferably 1 to 80, more preferably 0.1 to 50. If QZ P is less than 0.01, the addition effect of the organic polymer will not be exhibited, and on the contrary, the addition effect will be saturated, that is, it is not economical.
- the blending amount of the organic polymer (Q) in aspect 2 is the mass ratio Q between the blending amount of the organic polymer (Q) and the total blending amount (A + B) of the organic compound (A) and the organic compound (B).
- / (A + B) is preferably from 0.1 to 80, and more preferably from 0.1 to 50.
- Q / (A + B) is less than 0.01, the addition of organic polymer The additive effect does not appear, and conversely, if it is greater than 80, the additive effect is saturated, which is not economical.
- the aqueous metal surface treatment agent (embodiment 1 and embodiment 2) of the present invention further includes a metal compound (C) containing a metal ion having a valence of 2 or more (the metal ion is Zr, Ti, Hf or Ce ion). In some cases, except for the case of a colloidal dispersion) is preferably added. This improves the corrosion resistance of the metal material treated with the aqueous metal surface treatment agent of the present invention. Divalent or higher metal ions must be at least one selected from Ti, Zr, Hf, V, Mg, Mn, Zn, W, Mo, Al, Ni, Co, and Ca ions Is preferred.
- Examples of the metal compound (C) containing a divalent or higher metal ion include powerful metals and inorganic acids such as fluoro acid, phosphoric acid, nitric acid and sulfuric acid, or formic acid, acetic acid, butyric acid, oxalic acid, succinic acid, Lactic acid, L-asconolebic acid, tartaric acid, citrate, DL-salts with organic acids such as malic acid, malonic acid, maleic acid, phthalic acid, alkoxides of such metals, alkylacetonates, alkanediolates, And complex salts such as lactate, aminate and stearate.
- powerful metals and inorganic acids such as fluoro acid, phosphoric acid, nitric acid and sulfuric acid, or formic acid, acetic acid, butyric acid, oxalic acid, succinic acid, Lactic acid, L-asconolebic acid, tartaric acid, citrate, DL-s
- the Vion-containing rich compound is not particularly limited, but vanadium pentoxide V 2 0 5 , metavanadate HV 0 3 , ammonium metavanadate, sodium metavanadate, vanadium trichloride VOC l 3 , Vanadium trioxide v 2 o 3 , two
- vanadium acetyl cetylacetonate V (OC ( CH 2 ) CH 2 C_ ⁇ _CH 3) 3
- trichloride vanadium VC 1 3 can be exemplified phosphovanadomolybdic acid.
- a pentavalent vanadium compound this is at least selected from the group consisting of a hydroxyl group, a carbonyl group, a carboxyl group, a primary to tertiary amino group, an amide group, a phosphoric acid group and a phosphonic acid group.
- Those reduced to tetravalent to divalent with an organic compound having one kind of functional group can also be used.
- These metal compounds (C) can be used alone or in combination of two or more.
- metal ions are used to control the corrosion potential of metal surfaces in corrosive environments. It is thought that it has the effect of improving corrosion resistance by controlling the oxidation-reduction reaction, forming a very thin film on the metal surface, and improving the film density by cross-linking reaction with functional groups in the film component.
- the compounding amount of the metal compound (C) is the mass ratio of the content of the metal compound (C) and the content of Si derived from the functional group (a) in the film obtained from the aqueous metal surface treatment agent (0
- the blending amount is preferably such that 73 1 is 0.01 to 10.0, and more preferably such that the mass ratio is 0.1 to 5.0.
- the aqueous metal surface treatment agent (Aspect 1 and Aspect 2) of the present invention preferably further contains at least one acid (D) selected from hydrofluoric acid, organic acid and phosphoric acid.
- D acid selected from hydrofluoric acid, organic acid and phosphoric acid.
- Hydrofluoric acid improves the corrosion resistance due to the crisp action as well as the etching effect.
- Organic acid is a relatively low acidity acid, so it does not etch the metal surface strongly, but it removes the uneven ultra-thin acid film on the surface and improves corrosion resistance.
- phosphoric acid is negligible on the metal surface, it forms a phosphate-based chemical conversion film and improves corrosion resistance.
- the compounding amount of the acid (D) is the acid in the film obtained from the aqueous metal surface treatment agent.
- the mass ratio of the content of (D) and the content of Si derived from the functional group (a) (D) / Si is preferably such that the blending amount is 0.01 to 10.0. Mass ratio is 0.1 ⁇
- the blending amount is more preferably 0.
- ZS i is less than 0.01, the effect of the addition of acid (D) is not exhibited, and corrosion resistance is not improved.
- the (D) / Si force is greater than S10.0, the etching is excessive and the corrosion resistance is reduced, or the compounding effect of the acid (D) is not improved, which is not economical.
- the water-based metal surface treatment agent of the present invention (embodiment 1 and embodiment 2) further includes a simple substance of at least one element selected from Si, Zr, Ti, Sn, Hf, Ce and Nb. Or it is preferable to add a colloidal dispersion (E) of the compound. These colloidal particles have a concentration gradient in the distribution state in the film, and are concentrated near the metal surface. Corrosion resistance is improved to protect the metal surface. Also, increasing the density of the film, to reduce the thickness, in addition to improving the conductivity, hardness increase of the coating, an effect force s such as adhesion imparting.
- E colloidal dispersion
- the blending amount of the colloidal dispersion (E) is the solid content of the colloidal dispersion (E) in the coating obtained from the aqueous metal surface treatment agent and the content of Si derived from the functional group (a).
- Mass ratio (E) The blending amount is preferably such that ZSi is 0.01 to 10.0, and the blending amount is such that the mass ratio is 0.1 to 5.0. More preferable. If the (E) / Si force is less than 0.0.01, the effect of blending the colloidal dispersion (E) does not appear. On the other hand, if (E) Z Si is larger than 10.0, brittleness of the film occurs, and the corrosion resistance and adhesion deteriorate.
- the water-based metal surface treatment agent (Aspect 1 and Aspect 2) of the present invention further includes a surfactant, a thickener, and a conductivity improvement agent called a wettability improver for forming a uniform film on the coated surface.
- a surfactant for improving design properties
- a thickener for forming a uniform film on the coated surface
- a conductivity improvement agent called a wettability improver for forming a uniform film on the coated surface.
- Agents, coloring pigments for improving design properties, and film-forming aids for improving film-forming properties can also be combined.
- organic lubricants such as polyethylene wax and paraffin wax, and solid lubricants such as graphite, mica, and molybdenum disulfide can be blended as lubricity imparting agents.
- the compound which has can be mix
- the aqueous metal surface treatment agent (Aspect 1 and Aspect 2) of the present invention is applied to the surface of the metal material, and dried by heating to form a film on the surface of the metal material.
- the coating amount is preferably S I_ ⁇ 2 as 1 0 ⁇ 3 0 0 O mg / m 2 on the metal surface.
- the metal material to which the method of the present invention is applied is not particularly limited, but zinc-containing metal-plated steel plates, aluminum plates, and stainless steel plates are preferred. These metal materials may be subjected to pretreatment such as phosphate treatment and chromate treatment in advance. There are no particular restrictions on the method of applying to the surface of the metal material, and methods such as dipping, spraying, and coat coating can be used. Also, processing (coating) temperature, processing
- the (application) time is not particularly limited, but in general, the treatment (application) temperature is preferably 10 to 40 ° C., and the treatment (application) time is preferably 0.1 to 10 seconds.
- the treatment liquid layer formed on the surface of the metal material forms a film by scattering of the solvent, that is, water or alcohol.
- the treatment liquid layer is preferably heat-dried for industrial practical film formation.
- the drying temperature is preferably 30 to 300 ° C., more preferably 40 to 25 ° C., and 60 to 200 ° C. as the ultimate plate temperature. More preferably, the drying time is not particularly limited as long as the ultimate plate temperature satisfies the above conditions.
- the film formed using the surface treating agent of the present invention is mainly composed of an organosilicon compound and an organic polymer.
- the corrosion resistance and adhesion are such that when one part of the organosilicon compound is concentrated by drying or the like, the organosilicon compound reacts with each other to form a continuous film, and one part of the organosilicon compound One hydrolyzed OR group is attached to the metal surface and S i ⁇ It is presumed that a significant barrier effect is exhibited by forming M bonds (M: metal element on the surface of the object to be coated).
- the film using the surface treating agent of the present invention is very dense so that the unreacted silanol part reacts with the organic polymer so as to fill the voids of the film formed on the basis of silicon. Presumed to have a film structure. By such a mechanism, it is presumed that it is possible to form a new film having both acid resistance and alkali resistance as well as corrosion resistance and adhesion.
- test plate examples and comparative examples, and a method for applying the surface treating agent for metal materials will be described below.
- the material is sprayed for 2 minutes under the conditions of a concentration of 20 g ZL and a temperature of 60 ° C using a fine silicate alkali degreasing agent 4 3 3 6 (registered trademark: manufactured by Nihon Parkerizing Co., Ltd.).
- the test plate was treated, washed with pure water for 30 seconds, and then dried.
- Trimethychlorosilane 2 mono-reacted with 1 mole of trimethylolpropane in ethanol, and then mixed with pure water to adjust the solid content to 10%.
- the number of functional groups (a) in the obtained product is 2, and the molecular weight per functional group (b) is about 5 30.
- the number of functional groups (a) is 4, and the molecular weight per functional group (b) is about 1900.
- Polyether polyol (synthesis components: tetramethylene glycol and polyethylene glycol, molecular weight is 00): 150 parts by mass, trimethylolpropane: 6 Parts by mass, N-methyl-1-N, N_jetanolamine: 24 parts by mass, isophorone disoocyanate: 94 parts by mass and methyl ethyl ketone 1 3 5 parts by mass in a reaction vessel
- a urethane prepolymer was produced by reacting for 1 hour while maintaining at 5 ° C.
- the reaction vessel was charged with 15 parts by mass of dimethyl sulfate and reacted at 50 to 60 ° C. for 30 to 60 minutes to produce a cationic urethane prepolymer.
- 576 parts by mass of water was placed in the reaction vessel, and the mixture was uniformly emulsified.
- methyl ethyl ketone was recovered to obtain a water-soluble cationic urea resin.
- a reaction vessel was charged with bisphenol A polypropylene oxide 2-mole adduct 1 80 mass parts and heated with stirring.
- As a catalyst 0.9 part by mass of boron trifluoride jetyl ether complex was added, and then 2-ethylhexyl monoglycidyl ether (epoxy equivalent 1 9 8) 2 7 parts by mass at 60 to 70 ° C.
- the solution was added dropwise over a period of time and aged for 1.5 hours as it was, and an addition reaction was performed. After confirming the disappearance of the oxysilane ring in the system by the absorption amount of hydrochloric acid, the boron trifluoride ethyl ether complex was deactivated with 3 parts by mass of 48 mass% sodium hydroxide.
- reaction-type chromate treatment applied to the test plate (shown in Table 4 to 0), the base, I over glycidoxypropyltrimethoxysilane 1 2.0 mass 0/0, and 1 0.0% by weight methanol Immerse it in a comparative treatment solution dissolved in deionized water, After draining, the film was dried to reach a final plate temperature of 80 ° C.
- test plate The surface of the test plate, gamma _ Dali Sid trimethoxy main Tokishishiran 5.0 mass 0/0, and methanol 10 mass.
- a comparative treatment solution in which / 0 was dissolved in deionized water was applied using one coat of ⁇ .3 bar, and dried to form a coating film at a final plate temperature of 80 ° C.
- B 6 a; —Glyce mouth phosphonic acid
- organic compound (A), organic compound (B), organic polymer (Q), metal compound (C), acid (D) and colloidal dispersion (E) shown in Table 11 are used.
- An aqueous metal surface treating agent as an example of embodiment 2 shown in Table 11 was prepared by mixing with water as appropriate. This treatment agent was adjusted with water to a solid content concentration of 10%. Bar coating was applied to the surface of the test plate shown in Tables 12 to 18 so that the amount of the dry film was 70 Omg / m 2. The film was dried to a temperature of 80 ° C. .
- reaction-type chromate treatment applied to the test plate, the base ', .gamma.-glycidoxypropyltrimethoxysilane prop Noretorime Tokishishiran 12.0 mass 0/0, and methanol 10. 0 wt% in the comparison processing solution prepared by dissolving Datsui on water After dipping, draining with a ringer roll, it was dried to reach an ultimate plate temperature of 80 ° C to form a film.
- a comparative treatment solution containing 2.0 g / L of zirconium carbonate, 2.0 g / L of tertiary phosphate, and 0.5 g / L of vanadinolacetyl acetate was dissolved in water.
- the film was formed by applying with a No. 3 bar coat and drying to reach an ultimate plate temperature of 80 ° C.
- the comparative solution was applied by No. 3 bar coat and dried to reach a final plate temperature of 80 ° C to form a film.
- a salt spray test with JIS-Z-2371 was conducted for 120 hours, and the occurrence of white sharks was observed. .
- Wrinkle generation is less than 3% of the total area
- ⁇ Wrinkle generation is 3% or more and less than 10% of the total area
- ⁇ ⁇ occurrence is 10% or more and less than 30% of the total area
- ⁇ Wrinkle generation is 10% or more and less than 20% of the total area
- Occurrence is 20% or more and less than 30% of the total area
- ⁇ Wrinkle generation is 3% or more and less than 10% of the total area
- ⁇ ⁇ occurrence is 10% or more and less than 30% of the total area
- ⁇ Wrinkle generation is 3% or more and less than 1Q% of the total area
- ⁇ ⁇ occurrence is 10% or more and less than 30% of the total area
- ⁇ Guerui days are 90 days or more and less than 120 days
- ⁇ Gel days are 60 days or more and less than 90 days
- test results for embodiment 1 are shown in Tables 4-10. table:! ⁇ 3 Examples :! It can be seen that ⁇ 56 is an extremely stable water-based chemical that shows corrosion resistance equivalent to that of chromate and has both acid resistance and alkali resistance.
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Description
Claims
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EP06713069.0A EP1852523B1 (en) | 2005-02-02 | 2006-01-31 | Aqueous surface treating agent for metal material, surface treating method and surface-treated metal material |
JP2007501655A JP4683581B2 (ja) | 2005-02-02 | 2006-01-31 | 水系金属材料表面処理剤、表面処理方法及び表面処理金属材料 |
CN2006800039448A CN101115866B (zh) | 2005-02-02 | 2006-01-31 | 水系金属材料表面处理剂、表面处理方法以及表面处理金属材料 |
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EP1852523A1 (en) | 2007-11-07 |
JPWO2006082946A1 (ja) | 2008-06-26 |
JP4683581B2 (ja) | 2011-05-18 |
CN101115866B (zh) | 2011-04-13 |
CN101115866A (zh) | 2008-01-30 |
EP1852523B1 (en) | 2018-08-22 |
KR100947198B1 (ko) | 2010-03-11 |
EP1852523A4 (en) | 2011-03-30 |
KR20070094645A (ko) | 2007-09-20 |
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