Zinc electroplating
AssigneeDipsol Chemicals Co., Ltd.
InventorsKazuo Yanagida, Tethuzi Aoki, Akio Takahashi, Toshio Igarashi
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Abstract
A method for depositing bright zinc from zinc electrodeposition baths in which an aqueous solution of a low molecular weight polymer prepared by the reaction of at least one epihalohydrin with at least one nitrogen heterocyclic compound is added to the zinc electroplating bath.
Claims6
A method for the electrodeposition of bright zinc which comprises electrodepositing zinc from an aqueous zinc electrodepositing bath comprising an aqueous solution containing a source of zinc ions and an effective amount, sufficient to yield a bright zinc electrode deposit, of a bath-soluble reaction product prepared by the reaction of at least one epihalohydrin with at least one heterocyclic compound selected from the group consisting of imidazole compounds and pyrrole compounds, wherein 0.5 to 3 moles of said epihalohydrin is reacted per mole of said nitrogen heterocyclic compound at 50.degree.-90.degree.C.
Dependencies are inferred from the claim text.