No-rinse pretreatment methods and compositions for metal...

Details No-rinse pretreatment methods and compositions for metal... No-rinse pretreatment methods and compositions for metal...

C - Chemistry, Metallurgy

23

C

C23C 22/78 (2006.01) C23C 22/48 (2006.01)

Patent

CA 2603708

Conversion and passivation coatings and methods for metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise an aqueous sol of cerium oxide and/or silica particles and a ureido silane compound. The methods of the invention comprise contacting the requisite metal surface with the coating composition.

L'invention porte sur des revêtements de conversion et de passivation et les procédés associés de traitement de surfaces de métaux tels que l'acier et l'aluminium. Les compositions de revêtement consistent en un sol aqueux d'oxyde de cérium et/ou en particules de silice et un composé d'ureido silane. Lesdits procédés consistent à mettre en contact les surfaces de métaux avec la composition de revêtement.

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