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ZINC ELECTRODEPOSITION FROM COMPOSITION CONTAINING ZINC IONS A POLYETHER AN AROMATIC OR HETEROCYCLIC ACID AND AN AROMATIC ALDEHYDE
ZINC ELECTRODEPOSITION FROM COMPOSITION CONTAINING ZINC IONS A POLYETHER AN AROMATIC OR HETEROCYCLIC ACID AND AN AROMATIC ALDEHYDE
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机译:包含锌离子,芳香族或杂酸和芳香族醛的组合物的锌电沉积
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摘要
This invention relates to a method of producing bright zinc electrodeposits over a wide current density range, which comprises passing current from a zinc anode to a metal cathode for a time period sufficient to deposit a bright zinc electrodeposit upon said cathode; the current passing through an aqueous acidic bath composition containing at least one zinc compound providing zinc cations for electroplating zinc such as zinc chloride, zinc fluoborate, zinc sulfamate and zinc sulfate; chloride, fluoborate, sulfamate and/or sulfate anions may be added as salts of bath compatible cations to provide better electrical conductivity, and containing as cooperating additives at least one bath soluble substituted or unsubstituted polyether, at least one aliphatic unsaturated acid containing an aromatic or heteroaromatic group and at least one aromatic or N-heteroaromatic aldehyde.
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