ADDITIVE FOR ZINC PLATING BATHS AND NON-CYANIDE ALKALINE ZINC PLATING BATHS

摘要

Provided is a zinc plating bath additive enabling the rapid formation of a zinc coating having small variations in the thickness depending on the position on the surface of an object to be plated. The zinc plating bath additive contains a water soluble copolymer having, as the structural units, two amine compounds.