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US09511392B2 Method for coating metal surfaces in a multi-step method 有权
多步法涂覆金属表面的方法

Method for coating metal surfaces in a multi-step method
摘要:
A method for coating metal surfaces, in particular surfaces of wheels made of an aluminum alloy, in a multi-step method, wherein the metallic surfaces are first contacted with an aqueous composition predominantly containing silane/silanol/siloxane/polysiloxane and thereafter contacted with an aqueous composition predominantly containing at least one phosphonic compound.
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