Polyoxalkylated polyhydroxy compounds as additives in zinc alloy electrolytes
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United States of America Patent
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Feb 6, 1990
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N/A
app pub date -
Nov 2, 1988
filing date -
Mar 3, 1986
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Expired
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Abstract
An improved aqueous acidic electrolyte suitable for electrodepositing zinc alloys comprising a combination of zinc and at least one metal selected from the group consisting of nickel, cobalt, iron, and mixtures thereof incorporating an effective amount of an additive agent for providing improved grain-refinement and enhancing the adjustment of the codeposition of the alloying metals in the zinc alloy deposit. The additive agent comprises a bath soluble polyhydroxy compound having three or more hydroxyl groups at least one of which is substituted with a polyoxyalkylene group. The present invention further encompasses the process of employing the aforementioned electrolyte for the deposition of functional and decorative zinc alloy electrodeposits.
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