# US 10,370,772 B2 · Layered coating film, and coated article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,772 B2 - Document ID: US10370772B2 - Status: Granted - Kind: B2 - Application number: 15/324,109 - Filed: 2015-10-29 - Published: 2017-07-27 - Granted: 2019-08-06 - Earliest claimed: 2014-11-21 - Assignees: Mazda Motor Corporation - Applicants: Mazda Motor Corporation - Inventors: Hidekazu Kato; Kana Haruki; Naoto Waku; Kouji Teramoto - Web page: https://patentgrep.com/patent/US10370772B2 ## CPC - B05D 5/06: to obtain multicolour or other optical effects (B05D5/02 takes precedence) - C25D 15/00: Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires - B32B 7/023: Optical properties - B32B 27/20: using fillers, pigments, thixotroping agents - C09D 5/004: {Reflecting paints; Signal paints} - C09D 5/29: for multicolour effects - C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres} - C09D 133/12: Homopolymers or copolymers of methyl methacrylate - C25D 13/04: with organic material - C25D 13/12: characterised by the article coated - Y10T 428/24942: including components having same physical characteristic in differing degree - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A layered coating film according to the present invention includes a lower coat 30 including a first coloring material and a bright material, and an upper coat 20 superposed on the lower coat and including a second coloring material. The upper coat and the lower coat have similar colors. The refractive index of a film constituent of the lower coat other than the first coloring material is higher than the refractive index of a film constituent of the upper coat other than the second coloring material. ## Claims ### Claim 1 A layered coating film comprising: a lower coat including a first coloring material and aluminum flakes; and an upper coat superposed on the lower coat and including a second coloring material, wherein: the upper coat and the lower coat have similar colors, the refractive index of a film constituent of the lower coat other than the first coloring material is higher than the refractive index of a film constituent of the upper coat other than the second coloring material, the film constituent of the upper coat other than the second coloring material includes an acrylic resin and nanoparticles with a lower refractive index than the acrylic resin, and the film constituent of the lower coat other than the first coloring material and the aluminum flakes includes an acrylic resin. ### Claim 2 (depends on 1) The layered coating film of claim 1, wherein the film constituent of the lower coat other than the first coloring material further includes a resin and nanoparticles with a higher refractive index than the resin. ### Claim 3 (depends on 1) The layered coating film of claim 1, wherein a protective coat is provided on the upper coat. ### Claim 4 (depends on 1) The layered coating film of claim 1, wherein the second coloring material includes the same coloring material as the first coloring material. ### Claim 5 A coated article comprising: a layered coating film as a coating of the coated article, the layered coating film including: a lower coat including a first coloring material and aluminum flakes; and an upper coat superposed on the lower coat and including a second coloring material, wherein: the upper coat and the lower coat have similar colors, the refractive index of a film constituent of the lower coat other than the first coloring material is higher than the refractive index of a film constituent of the upper coat other than the second coloring material, the film constituent of the upper coat other than the second coloring material includes an acrylic resin and nanoparticles with a lower refractive index than the acrylic resin, and the film constituent of the lower coat other than the first coloring material and the aluminum flakes includes an acrylic resin. ### Claim 6 (depends on 5) The coated article of claim 5, wherein the film constituent of the lower coat other than the first coloring material further includes a resin and nanoparticles with a higher refractive index than the resin. ### Claim 7 (depends on 5) The coated article of claim 5, wherein a protective coat is provided on the upper coat. ### Claim 8 (depends on 5) The coated article of claim 5, wherein the second coloring material includes the same coloring material as the first coloring material.