The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Oct. 05, 2006
Isidor Hazan, Miami Beach, FL (US);
Jeffery W. Johnson, Rochester, MI (US);
Robert R. Matheson, West Bloomfield, MI (US);
Delson Jayme Trindade, Rochester Hills, MI (US);
Peter William Uhlianuk, Romeo, MI (US);
Isidor Hazan, Miami Beach, FL (US);
Jeffery W. Johnson, Rochester, MI (US);
Robert R. Matheson, West Bloomfield, MI (US);
Delson Jayme Trindade, Rochester Hills, MI (US);
Peter William Uhlianuk, Romeo, MI (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
This invention relates to a method for forming a multi-layer coating on a vehicle body, comprised of applying primer coating, base coating, and clear coat layers in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer layer comprises a film-forming binder comprising two acrylic polymers, the first being a caprolactone-modified branched acrylic polymer and the second being a caprolactone-modified linear acrylic polymer; and a crosslinking agent selected from aminoplast resin, blocked polyisocyanates, or mixtures thereof, wherein the composition is, essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.