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US 7,744,995 B2Granted
Multi-layer coatings for substrates
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorCynthia Gazepis Templeman
Life of this patent
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Abstract
A multi-layer coating for application to a substrate including a paint coating layer, a metallic coating layer, and a clear coating layer. The metallic coating layer includes chromium metallic flake pigment. The multi-layer coating may be resistant to discoloration in acids including, without limitation hydrofluoric acid, sulfuric acid, phosphoric acid and combinations thereof.
Claims10
A multi-layer coating for a substrate, the multi-layer coating comprising:
- a paint coating having a thickness of 14 microns and comprising an acrylic based paint;
- a metallic coating applied over the paint coating, the metallic coating having a thickness of at least 1 micron and comprising a chromium metallic flake pigment that does not dissolve in acidic solutions comprising 14 wt. % phosphoric acid, 2.3 wt. % sulfuric acid and 1.6 wt. % hydrofluoric acid;
- and
- a clear coating applied over the metallic coating, the clear coating having a thickness of 20 microns.
1 more element
A wheel having a coating, the coating comprising:
- a paint coating comprising an acrylic based paint applied directly to the wheel, the paint coating having a thickness of 14 microns;
- a metallic coating applied over the paint coating, the metallic coating having a thickness of at least 1 micron and comprising a chromium metallic flake pigment;
- and
- a clear coating applied over the metallic coating and having a thickness of 20 microns, wherein the wheel does not discolor in an acidic solution comprising 14 wt. % phosphoric acid, 2.3 wt. % sulfuric acid and 1.6 wt. % hydrofluoric acid.
1 more element
Dependencies are inferred from the claim text.