Composition and process for coating metallic surfaces

Details Composition and process for coating metallic surfaces Composition and process for coating metallic surfaces

C - Chemistry, Metallurgy

09

D

117/158, 6/225,

C09D 1/00 (2006.01) B05D 3/10 (2006.01) B05D 7/14 (2006.01) C23C 22/37 (2006.01) C23C 22/38 (2006.01) C23C 22/68 (2006.01)

Patent

CA 2004715

A no-rinse aqueous chemical composition for treating a metallic surface prior to application of an organic siccative coating characterised in that it comprises from 1.5 to 40 g/l (total) of Cr (VI) and optionally one or more of Ni, Co, Mg, Fe and Zn, and from 0.3 to 6.0 g/l (total) of F- and optionally PO4 3- is disclosed. A process for treating a metallic surface prior to application of an organic siccative coating characterised in that it comprises applying to the surface such a composition and not rinsing is also disclosed.

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