Compositions and processes for coating ferrous surfaces with...

Details Compositions and processes for coating ferrous surfaces with... Compositions and processes for coating ferrous surfaces with...

C - Chemistry, Metallurgy

23

C

6/4, 117/80

C23C 18/36 (2006.01) C23C 18/38 (2006.01)

Patent

CA 1236252

ABSTRACT OF THE DISCLOSURE Aqueous copper coating compositions, solid com- positions for forming the aqueous compositions, and processes for coating the surfaces of ferrous- containing materials by contacting said surfaces with the aqueous copper coating compositions, wherein the aqueous compositions contain: (a) from about 10 to about 30 grams/liter of cupric ions; (b) from about 1 to about 10 grams/liter of chloride ions; (c) from about 0.1 to about 10 grams/liter of at least one aminepolyacetic acid compound; and (d) either (i) from about 0.01 to about 10 grams/liter of acriflavine hydrochloride and from about 0.1 to about 20 grams/liter of a polyalkylene oxide C12-C18 alkyl or alkenyl amine; or (ii) from about 0.1 to about 10 grams/liter of the reaction product of ortho-toluidine and for- maldehyde.

483880

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