Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2011-01-11
2011-01-11
Vo, Hai (Department: 1787)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C427S372200, C427S402000
Reexamination Certificate
active
07867569
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.
REFERENCES:
patent: 4591533 (1986-05-01), Antonelli et al.
patent: 4880889 (1989-11-01), Jung et al.
patent: 5162426 (1992-11-01), Hazan et al.
patent: 5962574 (1999-10-01), Jackson et al.
patent: 5977256 (1999-11-01), Huybrechts et al.
patent: 6743867 (2004-06-01), Flosbach et al.
patent: 0 594 142 (1994-04-01), None
patent: 0 598 280 (1994-05-01), None
patent: 0 719 795 (1996-07-01), None
patent: 1 201 690 (2002-05-01), None
Peck et al., “Branching and Scission Reactions in High Temperature Acrylate Polymerizations”, Polymer Preprints, vol. 43, No. 2, 2002, pp. 154-155.
PCT International Search Report and Written Opinion for International Application No. PCT/US2006/039657 dated Jun. 22, 2007.
Hazan Isidor
Johnson Jeffery W.
Matheson Robert R.
Trindade Delson Jayme
Uhlianuk Peter William
E. I. Du Pont de Nemours and Company
Vo Hai
Xu Gann G.
LandOfFree
Method of forming multi-layer coating on automobile bodies... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming multi-layer coating on automobile bodies..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming multi-layer coating on automobile bodies... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2642413