Chromium and fluoride free metal treatment

Details Chromium and fluoride free metal treatment Chromium and fluoride free metal treatment

C - Chemistry, Metallurgy

09

D

C09D 133/26 (2006.01) C23C 22/56 (2006.01) C23C 22/60 (2006.01) C23C 22/68 (2006.01) C23F 11/173 (2006.01)

Patent

CA 2126887

-15- ABSTRACT OF THE DISCLOSURE A heavy metal and fluoride free pretreatment for a metal surface which enhances corrosion resistance and surface adhesion properties is described. The pretreatment is an aqueous solution of an anionic polyacrylamide which can be rinsed or dried in place.

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