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Title: Method for brightening the electrodeposits of zinc from alkaline zinc electroplating baths

Abstract: A method for depositing bright zinc from zinc electrodeposition baths in which a compound prepared by reacting imidazole and/or at least one imidazole derivative with at least one organic compound which quaternizes nitrogen in said imidazole in the presence of water is added to the alkaline zinc electroplating baths.


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Inventors: Oshima, Kathuhide (Tokyo, JP)
Takasaki, Haruyuki (Ichihara, JP)
Takahashi, Akio (Kisarazu, JP)

Application Number: 779560
Filing Date: 1977-03-21
Publication_date: 1978-09-12
Assignee: Dipsol Chemical Company, Ltd. (Tokyo, JP)
Primary Class(es): 205/307 205/310
Other Classes:
US Patent Ref:
3318787May, 1967Rindt et al.204/55.
3411996Nov, 1968Rushmere204/50.
3730855May, 1973Poor et al.204/55.
3787297Jan, 1974Beckwith et al.204/55.
3954575May, 1976Yanagida et al.204/55.
3974045Aug, 1976Takahashi et al.204/55.
4045306Aug, 1977Senge et al.204/55.

Other Refs: 1,496,742
Jul, 1969DE

Primary Examiner: Kaplan, G. L.
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier