Multi-layer coating process to achieve a highly saturated color appearance on a vehicle
First Claim
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1. A process for coating an automotive substrate with a tricoat finish to achieve a highly saturated color appearance, comprising:
- (a) applying a first solid color or effect color basecoat composition to a surface of an automotive substrate;
(b) thereafter applying a second, different, transparent or semi-transparent basecoat composition;
(c) subjecting the combined basecoats to an intermediate drying step;
(d) applying over said basecoat layer, an untinted clear coat composition; and
(e) curing the tricoat finish together in a single bake.
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Abstract
A process and materials for coating motor vehicles with a multi-layer tricoat finish that achieves high color saturation, with excellent depth of color and glamour, without sacrificing weatherability. The process eliminates the use of a tinted clearcoat and its associated problems.
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Citations
17 Claims
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1. A process for coating an automotive substrate with a tricoat finish to achieve a highly saturated color appearance, comprising:
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(a) applying a first solid color or effect color basecoat composition to a surface of an automotive substrate;
(b) thereafter applying a second, different, transparent or semi-transparent basecoat composition;
(c) subjecting the combined basecoats to an intermediate drying step;
(d) applying over said basecoat layer, an untinted clear coat composition; and
(e) curing the tricoat finish together in a single bake. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17)
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16. A process for eliminating the use of tinted clearcoats by coating an automotive substrate with a tricoat finish to achieve highly saturated color appearance, comprising:
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(a) applying a first waterborne basecoat composition to a surface of an automotive substrate;
(b) thereafter applying a second, different, transparent waterborne basecoat composition without flake pigments to replace a tinted clearcoat;
(c) subjecting the combined basecoats to an intermediate drying step;
(d) applying over said basecoat layer, an untinted clear coat composition; and
(e) curing the three coat finish together in a final bake.
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Specification