Method of passivating zinc-aluminum galvanized ferrous metals

Details Method of passivating zinc-aluminum galvanized ferrous metals Method of passivating zinc-aluminum galvanized ferrous metals

C - Chemistry, Metallurgy

23

F

148/16

C23F 11/04 (2006.01)

Patent

CA 2018416

Abstract of the Disclosure A method of passivating a Galvalume coated ferrous metal by treating with an aqueous, acidic homogeneous dispersion of a substituted amine having an alkyl chain of greater than about six carbon atoms. The substituted amine is stabilized as a homogeneous aqueous dispersion by the addition of a non-interfering acid to the aqueous solution. The preferred substituted amine is octadecylamine and the preferred acid is octadecylamine acetate.

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