Chrome free final rinse for phosphated metal surfaces

Details Chrome free final rinse for phosphated metal surfaces Chrome free final rinse for phosphated metal surfaces

C - Chemistry, Metallurgy

09

K

C09K 15/32 (2006.01) B32B 15/04 (2006.01) G01N 1/00 (2006.01)

Patent

CA 2500801

An aqueous composition comprising 3-aminopropyltriethoxysilane; 3- glycidoxypropyltrimethylsilane; one or more alcohols; and one or more Group IVA metal ions selected from zirconium, hafnium and titanium, or a mixture thereof and having a pH of about 2 to about 9 and use of the composition to treat conversion coated metal surfaces prior to application of a siccative coating.

L'invention concerne une composition aqueuse contenant du 3-aminopropyltriéthoxysilane ; du 3-glydoxypropyltriméthylsilane ; un ou plusieurs alcools ; et un ou plusieurs ions métalliques du groupe IV A sélectionnés parmi zirconium, hafnium et titane ou un mélange desdits composés. Ladite composition présente un pH d'approximativement 2 à approximativement 9. L'invention concerne également l'utilisation de ladite composition pour traiter des surfaces métalliques à couche de conversion, avant l'application d'un revêtement siccatif.

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