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US 2010/0163423 A1Published application
Electrocoat composition and process replacing phosphate pretreatment
AssigneeBASF SE
InventorsTimothy S. December, Abdellatif Chouai, Cynthia A. Stants, Gregory G. Menovcik
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Abstract
An electrically conductive substrate is electrocoated with an aqueous electrodeposition coating composition comprising a cathodically electrodepositable binder, the binder comprising an amine-functional phosphorylated resin and at least one additional coating layer, such as a second primer layer, a topcoat layer, or both.
Claims16
A method of coating a metal automotive vehicle body, comprising:
- (a) cleaning the metal automotive vehicle body;
- (b) placing the cleaned metal automotive vehicle body into an aqueous electrocoat coating composition comprising an amine-functional phosphorylated resin.;
- (c) connecting the metal automotive vehicle body as a cathode in an electric circuit and passing a current through the aqueous electrocoat coating composition to deposit an electrocoat coating layer onto the metal automotive vehicle body;
- and
- (d) applying a further coating layer over the electrocoat coating layer.
2 more elements
Dependencies are inferred from the claim text.