Electrostatic coating powder for glass, ceramic or metallic substrates
Assigneedmc2 Degussa Metals Catalysts Cerdec AG
InventorsVolker Schelling, Andreas Schriener, Herbert Triptrap
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Abstract
An electrostatically applicable coating powder is provided which contains a first powder which forms a glass layer upon firing, and 0.01 to 1% by weight of a salt of a carboxylic acid. The coating powder is free of organosiloxane and preferably contains a chemically or thermally activatable resin. The invention also provides methods for preparing the coating powder and methods for coating glass, ceramic or metal substrates with the powder.
Claims23
An electrostatically applicable coating powder, which comprises a first powder which forms a glass layer upon firing, and 0.01 to 1% by weight of a salt of a carboxylic acid, wherein said coating powder is free of organosiloxane.
A process for producing an electrostatically applicable coating powder, which comprises contacting a first powder which forms a glass layer upon firing with an aqueous solution comprising 0.01 to 1% by weight of a salt of a carboxylic acid, and drying the first powder, wherein the coating powder is free of organosiloxane.
A process for producing an electrostatically applicable coating powder, which comprises mixing a first powder which forms a glass layer upon firing with 0.01 to 1% by weight of a salt of a carboxylic acid in a wet or dry state, and drying the first powder if necessary, wherein the coating powder is free of organosiloxane.
Dependencies are inferred from the claim text.