Method for multi-coat refinishing of substrates

• US 20050031873A1
• Filed: 08/04/2003
• Published: 02/10/2005
• Est. Priority Date: 08/04/2003
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Duda, Andrew, Berschel, Guenter
• Application Number:
  US10/634,333
• Publication Number:
  US 20050031873A1
• Time in Patent Office: Days
• US Class Current: 428/411.100
• CPC Class Codes: B05D 2401/10 Organic solvent B05D2401/21 takes precedence
• CPC Class Codes: B05D 2401/20 Aqueous dispersion or solution
• CPC Class Codes: B05D 2451/00 Type of carrier, type of coating (Multilayers)
• CPC Class Codes: B05D 7/572 all layers being cured or baked together
• CPC Class Codes: B05D 7/574 at least some layers being let to dry at least partially before applying the next layer B05D7/577 takes precedence
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

Method for multi-coat refinishing of substrates comprising the following steps: A) applying a first coat of paint consisting of a solvent-based colour- and/or special-effect-imparting coating composition to a substrate precoated with a primer and/or a filler and/or further coating compositions, B) applying a second paint coat consisting of a water-based colour- and/or special-effect-imparting coating composition to the layer obtained under A) and C) applying a clear lacquer coat consisting of a transparent clear coat to the paint coat obtained under B).

Claims

1. Method for multi-coat refinishing of substrates comprising the following steps:

A) applying a first coat of paint consisting of a solvent-based colour- and/or special-effect-imparting coating composition to a substrate precoated with a primer and/or a filler and/or further coating compositions,

B) applying a second paint coat consisting of a water-based colour- and/or special-effect-imparting coating composition to the layer obtained under A) and

C) applying a clear lacquer coat consisting of a transparent clear coat to the paint coat obtained under B).

3. Method according to claim 1, wherein the solvent-based colour- and/or special-effect-imparting coating composition is a solid-color basecoat pigmented with colour-imparting absorption pigments and the water-based colour- and/or special-effect-imparting coating composition is a water-based base coat pigmented with special-effect pigments.

4. Method according to claim 1, wherein the solvent-based colour- and/or special-effect-imparting coating composition is a solid-color two-component coating composition pigmented with colour-imparting absorption pigments.

5. Method according to claim 4, wherein the solid-color two-component coating composition contains polyisocyanates as cross-linking agents.

6. Method according to claim 1, wherein both the solvent-based colour- and/or special-effect-imparting coating composition and the water-based colour- and/or special-effect-imparting coating composition are solid-color basecoats pigmented with colour-imparting absorption pigments.

9. Method according to claim 1, wherein the substrates are vehicles or vehicle components.

11. A substrate coated according to the method of claim 1.

2. Method for multi-coat refinishing of substrates comprising the following steps:

A) applying a first paint coat consisting of a water-based colour- and/or special-effect-imparting coating composition to a substrate precoated with a primer and/or a filler and/or further coating compositions,

B) applying a second paint coat consisting of a solvent-based colour- and/or special-effect-imparting coating composition to the layer obtained under A) and

C) applying a clear lacquer to the paint coat obtained under B).

7. Method according to claim 2, wherein the water-based colour- and/or special-effect-imparting coating composition is a solid-color water-based basecoat pigmented with colour-imparting absorption pigments and the solvent-based colour- and/or special-effect-imparting coating composition is a solvent-based basecoat pigmented with special-effect pigments.

8. Method according to claim 2, wherein the solvent-based colour- and/or special-effect-imparting coating composition is a two-component coating composition pigmented with special-effect pigments.

10. Method according to claim 2, wherein the substrates are vehicles or vehicle components.