Method of forming multi-layer coatings on automobile bodies...

Details Method of forming multi-layer coatings on automobile bodies... Method of forming multi-layer coatings on automobile bodies...

2006-10-05

2010-06-22

Tran, Thao T. (Department: 1787)

Coating processes

With post-treatment of coating or coating material

Heating or drying

C427S388100, C427S407100, C427S409000, C525S124000, C525S157000

Reexamination Certificate

active

07740912

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(a) a caprolactone-modified linear acrylic polymer; and(b) an aminoplast resin crosslinking agent,wherein the composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both.The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.

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PCT International Search Report and Written Opinion for International Application No. PCT/US2006/039646 dated Feb. 13, 2007.

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