EP2235233A1 - Matériau anticorrosion - Google Patents

Matériau anticorrosion

Info

Publication number
EP2235233A1
EP2235233A1 EP08856145A EP08856145A EP2235233A1 EP 2235233 A1 EP2235233 A1 EP 2235233A1 EP 08856145 A EP08856145 A EP 08856145A EP 08856145 A EP08856145 A EP 08856145A EP 2235233 A1 EP2235233 A1 EP 2235233A1
Authority
EP
European Patent Office
Prior art keywords
anticorrosion
composition according
metal ion
anticorrosion composition
multivalent metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08856145A
Other languages
German (de)
English (en)
Inventor
Yoshitaka Sugimoto
Qi Sun
Daniel Ray Fruge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WR Grace and Co Conn
WR Grace and Co
Original Assignee
WR Grace and Co Conn
WR Grace and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WR Grace and Co Conn, WR Grace and Co filed Critical WR Grace and Co Conn
Publication of EP2235233A1 publication Critical patent/EP2235233A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/187—Mixtures of inorganic inhibitors
    • C—CHEMISTRY; METALLURGY
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • 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
    • 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
    • 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
    • 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
    • C09D5/084—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • 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

Definitions

  • the present invention is directed to anticorrosion material, compositions, formulations including the anticorrosion composition, and methods of making the anticorrosion composition.
  • the present invention addresses some of the difficulties and problems discussed above by the discovery of new anticorrosion compositions, formulations and films prepared therefrom.
  • the composition includes two nano-sized metal oxide particles in combination with divalent and trivalent metal ions.
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion present in an amount of at least about 0.001 % up to about 10 % by weight based on the total weight of the composition.
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion, wherein the composition remains stable for at least 60 minutes at 60 0 C or at least 8 hours at 25 0 C.
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion, wherein the ratio of metal ion to metal oxide is greater than about Docket No. W977 2 -01
  • the ratio of multivalent metal ion to colloidal particle may be at least about 0.005, preferably at least about 0.008, more preferably at least about 0.01, and even more preferably at least about 0.01 to about 0.1.
  • the present invention is further directed to methods of forming the exemplary anticorrosion compositions.
  • One exemplary method comprises forming a dispersion of colloidal metal oxide particles in water including the steps of adding up to 40 wt% metal oxide particles to water, wherein the weight percent is based on a total weight of the dispersion; adding a multivalent metal salt to the dispersion and then mixing the composition.
  • the resulting dispersion desirably has a stable viscosity for at least 60 minutes at 60 0 C or at least 8 hours at 25°C.
  • an anticorrosion formulation of the present invention comprises a binder; a solvent; colloidal particles; and at least one multivalent metal ion, wherein the ratio of metal ion to metal oxide is greater than about 0.001 up to about 0.1.
  • the ratio of multivalent metal ion to colloidal particle may be at least about 0.005, preferably at least about 0.008, more preferably at least about 0.01, and even more preferably at least about 0.01 to about 0.1.
  • the method comprises a method of forming a coated substrate comprising the steps of providing a substrate having a first surface; coating the formulation onto the first surface of the substrate; and drying the coated substrate.
  • the resulting coating provides the substrate with desirable anticorrosion resistance that is particularly useful in corrosive environments.
  • a corrosion resistant material of the present invention comprises a substrate; and an anticorrosion coating on the substrate having colloidal particles; and at least one multivalent metal ion, wherein the ratio of metal ion to metal oxide is greater than about 0.001 up to about 0.1.
  • the ratio of multivalent metal ion to colloidal particle may be at least about 0.005, preferably at least about 0.008, more preferably at least about 0.01, and even more preferably at least about 0.01 to about 0.1. Docket No. W977 2 -01
  • FIG. 1 depicts a cross-sectional view of the exemplary article of the present invention, wherein the exemplary article comprises at least one layer containing anticorrosion material of this invention.
  • the present invention is directed to anticorrosion coatings and formulations and dispersions suitable for making anticorrosion coatings.
  • the present invention is further directed to methods of making anticorrosion materials, as well as methods of using such materials.
  • a description of exemplary anticorrosion materials, coatings, formulations and dispersions for making anticorrosion materials, and methods of making anticorrosion materials, coatings, formulations and dispersions are provided below.
  • the anticorrosion compositions and formulations of the present invention have good corrosion resistance, and are free of toxic metals while still maintaining other desirable film properties, such as adhesion, strength, thin film thickness, anti-corrosion performance, etc. Docket No W9772-01
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion present in an amount of at least about 0.001% up to about 5% by weight based on the total weight of the composition.
  • the multivalent metal ion may be present in the composition in an amount of about 0.1% by weight up to about 4%, preferably from about 0.1% up to about 3% by weight, more preferably from about 0.1% up to about 2 % by weight, and even more preferably from about 0.1% up to about 1% by weight based upon the total weight of the composition of which contains 20-40% solids.
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion, wherein the ratio of metal ion to colloidal particle may be greater than about 0.001 up to about 0.1.
  • the ratio of multivalent metal ion to colloidal particle may be at least about 0.005, preferably at least about 0.008, more preferably at least about 0.01 , and even more preferably at least about 0.01 to about 0.1.
  • the particles may be composed of metal oxides, sulfides, hydroxides, carbonates, silicates, phosphates, etc, but are preferably metal oxides.
  • metal oxides is defined as binary oxygen compounds where the metal is the cation and the oxide is the anion.
  • the metals may also include metalloids. Metals include those elements on the left of the diagonal line drawn from boron to polonium on the periodic table. Metalloids or semi-metals include those elements that are on this line. Examples of metal oxides include silica, alumina, titania, zirconia, etc., and mixtures thereof.
  • the particles may be a variety of different symmetrical, asymmetrical or irregular shapes, including chain, rod or lath shape.
  • the particles may have different structures including amorphous or crystalline, and may be in various forms, such as gels, sols, precipitates, fumed, etc.
  • the particles may include mixtures of particles comprising different compositions, sizes, shapes or physical structures, or that may be the Docket No. W9772-01
  • the metal oxide particles are amorphous, such as, for example, colloidal silica.
  • colloidal particles or “colloidal sol” it is meant particles originating from dispersions or sols in which the particles do not settle from dispersion over relatively long periods of time. Such particles are typically below one micron in size. Colloidal sols having an average particle size in the range of about 1 to about 300 nanometers and processes for making the same are well known in the art. See U.S.
  • Colloidal sols having average particle sizes in the range of 5 to 100 nanometers are more preferred for this invention.
  • Colloidal sols may have a specific surface area (as measured by BET nitrogen adsorption) in the range of 9 to about 2700 m7g SiO 2 .
  • colloidal silica sols contain an alkali to stabilize the silica particles from aggregation or gellation.
  • the alkali is usually an alkali metal hydroxide the alkali metals being from Group IA of the Periodic Table (hydroxides of lithium, sodium, potassium, etc.)
  • Most commercially available colloidal silica sols contain sodium, which originates, at least partially, from the sodium silicate used to make the colloidal silica, although sodium hydroxide may also be added to stabilize the sol against gelation.
  • Some alkaline colloidal silica sols are stabilized with aqueous ammonia.
  • alkaline colloidal silica sols are not suitable to this invention.
  • Most multivalent metal ions suitable to this invention form insoluble metal hydroxides in alkaline solutions, limiting the processing of the anticorrosive formulation.
  • Acidifying the alkaline colloidal silica sol with, e.g., a mineral or organic acid is disadvantageous because the resulting alkali metal salt will reduce the stability of the colloidal silica sol and anticorrosion composition of this invention and additionally may be deleterious to the anticorrosive performance of the coating.
  • Deionized colloidal silica sols are suitable for this invention.
  • deionized it is meant that any metal ions, e.g., alkali Docket No. W9772-01
  • metal ions such as sodium have been essentially removed from the colloidal silica solution phase and have been replaced with hydronium (H 3 O or H+) or acid ions.
  • Methods to remove alkali metal ions are well known and include ion exchange with a suitable ion exchange resin (U.S. Patents 2,577,484 and 2,577,485), dialysis (U.S. Patent 2,773,028) and electrodialysis (U. S. Patent 3,969,266).
  • the particles may also be surface modified with aluminum as described in U.S. Patent 2,892,797 (the contents therein incorporated herein by reference), and then the modified silica is deionized.
  • multivalent metal ion means metal ions that possess a valence of two or three.
  • the multivalent metal ions include, but are not limited to, Al, Ga, Ti, Zr, Hf, Zn, Mg, Ca, Nb, Ta, Fe, Cu, Sn, Co, W, Ce, Ba, Mn, Mo, V and the like.
  • the solids content (or amount of colloidal particles) of the anticorrosion composition ranges from about 1 to about 40 wt %, preferably from about 1 to about 30 wt%, more preferably from about 1 to about 25 wt%, and even preferably from about 1 to about 20 wt %, based on the total weight of the composition.
  • an anticorrosion composition of the present invention comprises a solvent; colloidal particles; and at least one multivalent metal ion, wherein the composition remains stable for at least 60 minutes at 60 0 C or at least 120 minutes at 6O 0 C.
  • the composition typically may remain stable for at least about 3 hours at 6O 0 C, preferably at least about 6 hours at 60 0 C, more preferably at least about 12 hours at 60 0 C, and even more preferably at least about 24 hours at 60 0 C.
  • the composition typically may remain stable for at least about 24 hours at 25 0 C, preferably at least about 2 days at 25°C, more preferably at least about 4 days at 25°C, and even more preferably at least about 8 days at 25°C.
  • stable means a dispersion of particles that does not gel over time.
  • the anticorrosion composition of the present invention may be prepared by mixing colloidal particles with a solvent and Docket No W977 2 -01
  • the solvent may be any solvent that is compatible with the colloidal particles and multivalent metal ion salt.
  • Water is a preferred solvent but mixtures of water and water miscible organic solvents may be used (e.g., methanol, ethanol, propanol, acetone, etc.).
  • Useful multivalent metal ion salts are those which have a multivalent metal ion and a multifunctional soluble anion.
  • the anion does not promote metal corrosion.
  • examples of such anion include, but are not limited to, nitrates, nitrites, lactates, phosphates, hydrogen phosphates, sulfates, molybdates or mixtures thereof.
  • Mixing may be accomplished by conventional mixing and blending equipment common to laboratory or industrial processes. High shear mixers may be used but are not necessary. Because concentrated solutions of the multivalent metal ion salt solution can cause gelation of the colloidal particles on contact, the multivalent metal ion salt solution should be as dilute as possible to achieve the target metal ion to colloidal particle ratio and total solids level of the anticorrosion formulation. Typically, this can be accomplished with solutions containing 0.1-1 mole per liter of the multivalent metal ion, preferably 0.1-0.5 mole per liter of the multivalent metal ion.
  • the method comprises a method of forming a coated substrate comprising the steps of providing a substrate having a first surface; coating the formulation onto the first surface of the substrate; and drying the coated substrate.
  • the resulting coating provides the substrate with desirable anticorrosion resistance that is particularly useful in corrosive environments.
  • the dispersions may be used to coat a surface of a variety of substrates including, but not limited to, a metal substrate, a surface treated metal substrate, a metal substrate having a pretreatment layer or other layer thereon, a metal composite substrate, or any other substrate that requires corrosion resistance, and combinations thereof.
  • the resulting coated substrate may be used in a number of applications including, but not limited to, chemical conversion applications, direct painting applications, etc.
  • an anticorrosion composition of the present invention comprises a binder. In this Docket No. W977 2 -01
  • a binder is utilized to provide desirable film properties upon application to a substrate.
  • the anticorrosion composition may be incorporated in conventional coating binders to form an anticorrosion coating.
  • the binder not only acts to bind the colloidal particles and to form a film, it also provides adhesiveness to the interface between the coating and the substrate or any intermediate layer between the anticorrosion coating and substrate.
  • Water-soluble or water-compatible binders such as latexes are particularly suitable in the present invention and may, for example, be epoxy, polyester, polypropylene, polyethylene, acrylic silicone, polyurethane, polyamine, acrylic emulsion, polyvinyl butyral, etc.
  • binders include starch derivatives such as oxidized starch, a etherified starch or phosphate starch; a cellulose derivative such as carboxymethyl cellulose or hydroxymethyl cellulose; casein, gelatin, soybean protein, polyvinyl alcohol or a derivative thereof; polyacrylates; vinyl alcohol/acrylamide copolymers; cellulose polymers; starch polymers; isobutylene/maleic anhydride copolymer; vinyl alcohol/acrylic acid copolymer; polyethylene oxide modified products; dimethyl ammonium polydiallylate; and quaternary ammonium polyacrylate; polyvinyl pyrrolidone, a maleic anhydride resin or a conjugated diene-type copolymer latex such as a styrene- butadiene copolymer or a methyl methacrylate-butadiene copolymer; acrylic polymer latex such as a polymer or copolymer of an acrylic acid ester or a methacrylic acid ester
  • An aqueous adhesive such as a thermosetting synthetic resin such as a melamine resin or a urea resin; a polymer or copolymer resin of an acrylic acid ester or a methacrylic acid ester such as a polymethyl methacrylate; or a synthetic resin-type binder such as a polyurethane resin, an unsaturated polyester resin, a vinyl chloride-vinyl acetate copolymer, polyvinyl butyral or an alkyd resin; or mixtures thereof may also be used.
  • a thermosetting synthetic resin such as a melamine resin or a urea resin
  • a polymer or copolymer resin of an acrylic acid ester or a methacrylic acid ester such as a polymethyl methacrylate
  • a synthetic resin-type binder such as a polyurethane resin, an unsaturated polyester resin, a vinyl chloride-vinyl acetate copolymer, polyvinyl butyral or an alkyd resin; or mixture
  • the binder may be combined with the anticorrosion composition using conventional blenders and mixers. The components may be combined and mixed at ambient conditions.
  • the solids content (or amount of colloidal particles and binder) of the anticorrosion composition ranges from about 1 to about 50 wt%, preferably from about 1 to about 30 wt%, more preferably from about 1 to about 25 wt%, and even preferably from about 1 to about 20 wt%, based on the total weight of the composition.
  • Colloidal particles and binder solids may be present in the coating formulation at a ratio of at least 1 : 1, and more preferably 6:4 to 4: 1 by weight. The ratio can be as high as 9.9: 1.
  • a corrosion resistant material of the present invention comprises a substrate; and an anticorrosion coating on the substrate having colloidal particles; and at least one multivalent metal ion, wherein the weight ratio of metal ion to metal oxide is greater than about 0.001 up to about 0.1.
  • the ratio of multivalent metal ion to colloidal particle may be at least about 0.005, preferably at least about 0.008, more preferably at least about 0.01 , and even more preferably at least about 0.01 to about 0.1.
  • An exemplary coated substrate is provided in FIG. 1.
  • exemplary coated substrate 1 comprises thin pre-treatment layer 2, a primary layer 3, a top coating layer 4. All layers may comprise the anticorrosion composition of the present invention, although typically top coating layer 4 does not contain this composition.
  • the pre-treatment layer 2 includes the anticorrosion composition of the present invention.
  • Suitable binder materials for forming the thin pre-treatment layer 2 may include, but are not limited to, water absorptive materials such as polyacrylates; vinyl alcohol/acrylamide copolymers; cellulose Docket No. W9772-01
  • optional primary layer 3 may include, but are not limited to, polyethylene, polypropylene, polyesters, and other polymeric materials.
  • Substrate 1 may be composed of a variety of materials that corrode over time such as any metal or metalloid.
  • the anticorrosion composition may be used in a method of making a treated or coated anticorrosion material.
  • the method of making the material comprises the steps of providing a substrate having a first surface; and applying the anticorrosion composition onto the first surface of the substrate, which forms an anticorrosion coating layer thereon.
  • the coating layer may be subsequently dried to form a coated substrate.
  • the coated substrate may be used to form a pre-treated anti-corrosive substrate.
  • the anticorrosion material may be utilized in chemical conversion coating and thin painting surface treatment.
  • Sol 1 22 nm particles, ammonia stabilized, pH ⁇ 9;
  • SoI 22 nm particles, alkaline (pH ⁇ 9) containing sodium ion Docket No. W9772-01
  • Sol 3 22 nm particles, stabilized with aluminate according to the method disclosed in US 2,892,797 and deionized to pH 4;
  • Sol 4 12 nm particles, stabilized with aluminate according to US 2,892,797 and deionized to pH 4.
  • a mixture of 0.5M Ca(NO 3 ) 2 and water is added to each of these sols with agitation such that the samples contained 20% SiO 2 and Ca/SiO 2 weight ratio is 0.005, 0.01, 0.02 and 0.03. Observation of these samples at room temperature over an 8-day period are as follows:
  • Samples made from Sol 4 are stable at ratios 0.005 and 0.01 for the length of the test. At ratio of 0.02, the sample gelled after 8 days and at ratio of 0.03, the sample gelled after 1 day. This shows that colloidal particle size plays a significant role on formulation stability and the choice should be made based on the needed stability and anticorrosion performance.
  • Example 1 to make a sample with Ca/SiO 2 weight ratio of 0.03 and containing 20 weight % SiO2. This sample gelled after 7 days at room temperature. This shows that this calcium compound may also be used.
  • Sample 1 Sol 3 20% SiO 2 adjusted to pH ⁇ 2 with phosphoric acid having no multivalent metal ion. Docket No W9772- Q 1
  • R L R L + k(Ru -R L ), where k is a variable ranging from 1% to 100% with a 1% increment, e.g., k is 1%, 2%, 3%, 4%, 5%. ... 50%, 51%, 52%. ... Docket No W977 2 -01

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Chemically Coating (AREA)
  • Colloid Chemistry (AREA)

Abstract

L'invention porte sur un matériau anticorrosion qui comporte des particules colloïdales et des ions métalliques multivalents. Les particules sont de préférence de la silice. Les ions métalliques peuvent être Al, Ga, Ti, Zr, Hf, Zn, Mg, Ca, Nb, Ta, Fe, Cu, Sn, Co, W, ou Ce. Le matériau peut être ajouté à un liquide de revêtement par conversion, mélangé avec un liant polymère ou utilisé en tant que tel pour former un revêtement.
EP08856145A 2007-12-04 2008-11-24 Matériau anticorrosion Withdrawn EP2235233A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US529607P 2007-12-04 2007-12-04
PCT/US2008/013087 WO2009073112A1 (fr) 2007-12-04 2008-11-24 Matériau anticorrosion

Publications (1)

Publication Number Publication Date
EP2235233A1 true EP2235233A1 (fr) 2010-10-06

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Application Number Title Priority Date Filing Date
EP08856145A Withdrawn EP2235233A1 (fr) 2007-12-04 2008-11-24 Matériau anticorrosion

Country Status (14)

Country Link
US (1) US20100314585A1 (fr)
EP (1) EP2235233A1 (fr)
JP (1) JP5829807B2 (fr)
KR (1) KR20100098426A (fr)
CN (1) CN101932752A (fr)
AR (1) AR069474A1 (fr)
AU (1) AU2008331914A1 (fr)
BR (1) BRPI0820020A2 (fr)
CA (1) CA2707829A1 (fr)
CL (1) CL2008003597A1 (fr)
MX (1) MX2010005951A (fr)
RU (1) RU2010127279A (fr)
TW (1) TW200932851A (fr)
WO (1) WO2009073112A1 (fr)

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EP2499206A1 (fr) * 2009-11-11 2012-09-19 BYK-Chemie GmbH Composition pour revêtement
US9005355B2 (en) * 2010-10-15 2015-04-14 Bunge Amorphic Solutions Llc Coating compositions with anticorrosion properties
US20120094130A1 (en) * 2010-10-15 2012-04-19 Universidade Estadual De Campinas Coating Compositions With Anticorrosion Properties
US9371454B2 (en) 2010-10-15 2016-06-21 Bunge Amorphic Solutions Llc Coating compositions with anticorrosion properties
CN102009037B (zh) 2010-10-25 2013-06-19 江苏考普乐新材料股份有限公司 光电化学保护金属的方法
US8496762B2 (en) * 2011-02-04 2013-07-30 Roberto Zoboli Aluminum treatment compositions
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MX2010005951A (es) 2010-06-23
US20100314585A1 (en) 2010-12-16
RU2010127279A (ru) 2012-01-10
AU2008331914A1 (en) 2009-06-11
JP2011505499A (ja) 2011-02-24
WO2009073112A1 (fr) 2009-06-11
TW200932851A (en) 2009-08-01
AR069474A1 (es) 2010-01-27
KR20100098426A (ko) 2010-09-06
CA2707829A1 (fr) 2009-06-11
CL2008003597A1 (es) 2009-11-27
CN101932752A (zh) 2010-12-29
JP5829807B2 (ja) 2015-12-09

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