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US 6,419,989 B1Granted
Scratch-resistant sol-gel coating for clear powder-slurry lacquer
AssigneeBASF Coatings GmbH
InventorsPeter Betz, Horst Hintze-Büning, Christel Ehlig
Life of this patent
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Abstract
The present invention relates to a process for producing coated substrates, especially coated automobile bodies, coils and furniture, in which first of all a powder slurry clearcoat material and then a sol-gel clearcoat material are applied to an optionally precoated substrate and are then cured conjointly.
Claims12
A process for producing a coated substrate, comprising
- applying a powder slurry clearcoat material to a substrate to form a coated substrate,
- subjecting the coated substrate to a temperature such that the powder slurry clearcoat material is predried and induced to form a film which is only partly cured, said temperature being above the film formation temperature of the powder slurry clearcoat material and below the temperature at which crosslinking of the powder slurry clearcoat material is complete,
- applying a sol-gel clearcoat material to the only partly cured powder slurry material film, and
- curing the sol-gel clearcoat material and the only partly cured powder slurry material film conjointly such that a chemical bond results between them.
1 more element
Dependencies are inferred from the claim text.