Brightening method and composition for zinc plating baths

Details Brightening method and composition for zinc plating baths Brightening method and composition for zinc plating baths

C - Chemistry, Metallurgy

25

D

204/37

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

Patent

CA 1108087

BRIGHTENING METHOD AND COMPOSITION FOR ZINC PLATING BATHS ABSTRACT OF THE DISCLOSURE A method and bath for the electrodeposition of bright to semi-bright zinc plate, wherein there is incorporated into the bath a water soluble additive which is a polymer derived from polyepichlorohydrin or polyepibromohydrin and a tertiary amine and wherein a quaternary group +NR3- replaces at least 25 percent of the halide groups of the polyhalohydrin. In the quaternary ammonium group, X is a chloride or bromide group and R is an alkyl, alkenyl, alkynyl or alkanol radical or mixtures thereof, each radical containing from 1 to 4 carbon atoms.

267317

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