A galvanization bath additive, which comprises a copolymer of (A) urea, (B) N,N-dimethyl ethylenediamine, (C) N,N,N',N'-tetraalkyl alkylenediamine, and (D) at least one of dichloroalkylether, dichloroalkane and epichlorohydrin, is added to a galvanization bath comprising 1-50 g/L of zinc and 30-250 g/L of sodium hydroxide. As a result, the plating film formation rate is increased and it is possible to prevent abnormal deposition at high current density.
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机译：镀锌浴添加剂，其包含（A）尿素，（B）N，N-二甲基乙二胺，（C）N，N，N'，N'-四烷基亚烷基二胺和（D）二氯烷基醚中的至少一种的共聚物将二氯烷烃和环氧氯丙烷加入到包含1-50 g / L的锌和30-250 g / L的氢氧化钠的镀锌浴中。结果，增加了镀膜形成速率，并且可以防止在高电流密度下的异常沉积。
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