# US 7,081,157 B2 · Use of MoO3 as corrosion inhibitor, and coating composition containing such an inhibitor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,081,157 B2 - Document ID: US7081157B2 - Status: Granted - Kind: B2 - Application number: 10/416,375 - Filed: 2001-11-12 - Published: 2004-07-22 - Granted: 2006-07-25 - Earliest claimed: 2000-11-13 - Assignees: Dacral - Inventors: Etienne Maze; Carmen Mocquery; Benoit Millet; Antonio Francisco Iandoli Espinosa - Web page: https://patentgrep.com/patent/US7081157B2 ## CPC - C09D 5/103: {containing Al} - C09D 5/084: {Inorganic compounds} - C09D 5/10: containing metal dust - C09D 5/106: {containing Zn} - C23C 22/74: for obtaining burned-in conversion coatings - C23F 11/185: {Refractory metal-containing compounds} - C23C 2222/20: Use of solutions containing silanes - Y10T 428/12063: Nonparticulate metal component - Y10T 428/12792: Zn-base component - Y10T 428/25: Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles - Y10T 428/31663: As siloxane, silicone or silane - Y10T 428/31678: Of metal - 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 (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - 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 (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - C23F: NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE (working metal by laser beams B23K26/00; desurfacing by applying flames B23K7/00; working of metal by electro-erosion B23H; producing decorative effects by removing surface material, e.g. by engraving, by etching, B44C1/22; electrolytic etching or polishing C25F); 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The subject matter of the invention is the use of MoO3 as a corrosion coating composition for metal parts, characterized in that it comprises: a least one particulate metal; an organic solvent; a thickener; a silane-based binder, preferably carrying epoxy functional groups; molybdenum oxide (MoO3); possibly a silicate of sodium, potassium or lithium; and water. ## Claims ### Claim 1 An aqueous anti-corrosion coating composition for metal parts, which composition comprises at least one particulate metal; an organic solvent; a thickener; a silane-based binder; molybdenum oxide; and water. ### Claim 2 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains from 0.5% to 7% by weight of molybdenum oxide. ### Claim 3 (depends on 2) The anti-corrosion coating composition of claim 2, which composition contains approximately 2% by weight of molybdenum oxide. ### Claim 4 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains from 10% to 40% by weight of the at least one particulate metal. ### Claim 5 (depends on 1) The anti-corrosion coating composition of claim 1, in which said particulate metal is chosen from lamellar zinc and/or lamellar aluminum. ### Claim 6 (depends on 5) The anti-corrosion coating composition of claim 5, in which said particulate metal comprises lamellar zinc. ### Claim 7 (depends on 1) The anti-corrosion coating composition of claim 1, in which composition the organic solvent is a glycolether. ### Claim 8 (depends on 7) The anti-corrosion coating composition of claim 7, in which composition the organic solvent is diethylene glycol, triethylene glycol, or dipropylene glycol. ### Claim 9 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains from 0.005% to 2% by weight of the thickener. ### Claim 10 (depends on 9) The anti-corrosion coating composition of claim 9, in which thickener is a cellulose derivative. ### Claim 11 (depends on 10) The anti-corrosion coating composition of claim 10, in which thickener is hydroxymethylcellulose, hydroxypropylcellulose, or hydroxypropylmethylcellulose. ### Claim 12 (depends on 9) The anti-corrosion coating composition of claim 9, in which the thickener is xanthan gum or a polyurethane or acrylic thickener. ### Claim 13 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains from 3% to 20% by weight of silane, as the silane-based binder. ### Claim 14 (depends on 13) The anti-corrosion coating composition of claim 13, in which composition the silane comprises γ-glycidoxypropyltrimethoxysilane. ### Claim 15 (depends on 1) The anti-corrosion agent of claim 1, in which composition the silane-based binder carries epoxy functional groups. ### Claim 16 (depends on 1) The anti-corrosion coating composition of claim 1, in which composition the organic solvent contains up to approximately 10% by weight of white spirit. ### Claim 17 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains a silicate of sodium, potassium, or lithium. ### Claim 18 (depends on 1) The anti-corrosion coating composition of claim 1, which composition contains approximately 30% to 60% by weight of water.