METHOD FOR PRODUCING A MULTI-COAT COLOUR AND/OR EFFECT PAINT SYSTEM, THE COLOUR-FORMING COATING COMPOSITION COMPRISING A KETONE FOR REDUCING THE PINHOLE COUNT
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United States of America Patent
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Issued Date -
Aug 8, 2013
app pub date -
Jun 1, 2011
filing date -
Jul 1, 2010
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Abandoned
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Abstract
Disclosed is a method for producing a multicoat color and/or effect painting system by applying a pigmented aqueous basecoat material to a substrate, forming a film from the applied coating, applying a clearcoat material to the film, and then curing the film together with the applied clearcoat. The applied pigmented aqueous basecoat material comprises at least one ketone of the general formula R1-(C═O)—R2, the ketone being present in an amount of 0.1% to 5% by weight, based on the weight of the coating material, R1 being an optionally substituted aliphatic or cycloaliphatic radical having 1 to 10 C atoms, and R2 being an optionally substituted aliphatic or cycloaliphatic radical having 1 to 10 C atoms, and the sum of the C atoms present in R1 and R2 amounting to at least 5 C atoms.
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