# US 10,118,196 B2 · Laminated coating film and coated article

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- Number: US 10,118,196 B2
- Document ID: US10118196B2
- Status: Granted
- Kind: B2
- Application number: 15/032,531
- Filed: 2014-10-03
- Published: 2016-09-08
- Granted: 2018-11-06
- Earliest claimed: 2013-10-30
- Assignees: Mazda Motor Corporation
- Applicants: Mazda Motor Corporation
- Inventors: Hidekazu Kato; Kana Haruki; Naoto Waku
- Web page: https://patentgrep.com/patent/US10118196B2

## CPC

- B05D 5/06: to obtain multicolour or other optical effects (B05D5/02 takes precedence)
- B05D 5/065: {having colour interferences or colour shifts or opalescent looking, flip-flop, two tones}
- B05D 7/50: {Multilayers}
- B05D 7/54: {No clear coat specified}
- B32B 15/08: of synthetic resin
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 27/08: of synthetic resin
- B32B 27/20: using fillers, pigments, thixotroping agents
- G02B 5/206: {comprising particles embedded in a solid matrix}
- G02B 5/286: {having four or fewer layers, e.g. for achieving a colour effect}
- B32B 2255/06: on metal layer
- B32B 2255/26: Polymeric coating
- B32B 2307/402: Coloured
- B32B 2307/418: Refractive
- B32B 2605/08: Cars
- Y10T 428/24942: including components having same physical characteristic in differing degree
- Y10T 428/25: Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T 428/259: Silicic material
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A multilayer coating film includes a lower coating film 5 containing a colorant, and an upper coating film 6. If the upper coating film 6 has a refractive index n1 of greater than or equal to 1.2 and less than or equal to 1.5, the ratio n1/n2 of the refractive index n1 of this upper coating film 6 to the refractive index n2 of the lower coating film 5 is set to be greater than or equal to 0.67 and less than or equal to 1. If the upper coating film has a refractive index n1 of greater than or equal to 1.6 and less than or equal to 3.0, the refractive index ratio n1/n2 is set to be greater than 1 and less than or equal to 1.67.

## Claims

### Claim 1

A multilayer coating film comprising:
a lower coating film configured to be provided on a target article, the lower coating film containing a colorant and a second constituent; and
an upper coating film stacked on the lower coating film, the upper coating film containing a first constituent, wherein
the upper coating film is stacked directly on the lower coating film,
the first constituent contains a resin as a main ingredient, the resin containing nanoparticles that have a higher refractive index than the resin,
the first constituent has a refractive index n1 of greater than or equal to 1.6,
the second constituent has a refractive index n2 of less than or equal to 1.4, and
a ratio n1/n2 of the refractive index n1 of the first constituent to the refractive index n2 of the second constituent is greater than 1 and less than or equal to 1.67.

### Claim 2 (depends on 1)

A coated article, wherein
the multilayer coating film of claim 1 is provided on the target article.