| US 7,592,038 B2 | ||
| Method for repairing surface coating defects | ||
| Mark C. Piton, Media, Pa. (US); James E. Fawcett, Hockessin, Del. (US); Timothy Peoples, Jr., Detroit, Mich. (US); and Anthony Kempski, Wilmington, Del. (US) | ||
| Assigned to E. I. du Pont de Nemours and Company, Wilmington, Del. (US) | ||
| Filed on Feb. 08, 2007, as Appl. No. 11/703,908. | ||
| Claims priority of provisional application 60/817037, filed on Jun. 28, 2006. | ||
| Prior Publication US 2008/0003355 A1, Jan. 03, 2008 | ||
| Int. Cl. B05D 3/00 (2006.01) | ||
| U.S. Cl. 427—140 [427/142; 427/402] | 14 Claims |
| 1. A method for repairing at least one coating defect disposed on a substrate coated with a surface coating that exhibits
a visual effect generated by the presence of one or more visual effect pigments in said surface coating, said method comprising
the steps of:
a) applying a first coating composition to form a first layer covering an affected area over the coating defect, wherein the
first coating composition comprises one or more visual effect control agents and is free from said visual effect pigments;
b) partial drying the first layer;
c) applying a second coating composition over the partially dried first layer to form a second layer covering a repair area
in that the repair area covers the coating defect and is nested within the affected area, wherein the second coating composition
comprises one or more visual effect control agents and one or more matching pigments for matching said visual effect of the
surface coating; and
d) curing said first and said second layers to form a repaired coating on said surface coating on said substrate;
wherein said repaired coating is free of visible edge effect and has visual effect that matches the visual effect of said
surface coating.
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