Zinc plating method

Details Zinc plating method Zinc plating method

C - Chemistry, Metallurgy

25

D

204/37

C25D 3/22 (2006.01) C25D 3/24 (2006.01)

Patent

CA 1070638

ZINC PLATING METHOD ABSTRACT OF THE DISCLOSURE An article is zinc plated by electrodeposition in an alkaline zinc plating bath of ZnO and NaOH to which has been added, optionally together with a small quantity of an aromatic aldehyde, a polyamine sulfone represented by the general formula Image where: each of R1 and R2 is hydrogen, an allyl group, a straight-chain or branched-chain alkyl group having 1 to 16 carbon atoms, an aralkyl group, or a hydroxyalkyl group of the general formula Image , where m is an integer of 1 to 6; X- is a halogen ion, HSO4-, HSO3-, HCOO-, or CH3COC-; and n is an integer such that the number average molecular weight becomes 2,000 to 350,000. a and b are natural numbers having a relation such that a:b = 100: (10 to 100).

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