M&t Chemicals, Inc.

Frank Passal

Otto Kardos

Ronald J Lash

The novel process of this invention for electroplating a bright brass onto basis metal comprises passing current from an anode to a basis metal cathode through an aqueous alkaline cyanide plating solution containing:

Brass plating

This invention relates to a method of producing lustrous to brilliant zinc electrodeposits, which comprises passing current from a zinc anode to a metal cathode for a time period sufficient to deposit a lustrous to brilliant 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 said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one polyether surfactant, at least one aromatic carbonyl compound, and, as a luster and leveling development agent, sulfonated castor oil.

Bright acid zinc plating

This invention relates to an improved method of electroplating zinc while simultaneously effecting enhanced anode corrosion characteristics, which comprises passing current from a zinc anode to a metal cathode through a plating solution containing at least one organic brightener, a chloride-containing salt providing chloride anions and boric acid as a buffer in the absence of ammonium cations, chelating agents, and complexing agents for a time period sufficient to deposit a zinc electrodeposit upon said cathode; the improvement consisting of the current passing through an aqueous acidic bath composition containing zinc sulfamate providing zinc cations for electroplating zinc.

Zinc anode benefaction

In accordance with certain of its aspects, this invention relates to a process for the preparation of an electrodeposit which contains at least one metal selected from the group consisting of nickel and cobalt which comprises passing current from an anode to a cathode through an aqueous plating solution containing a member selected from the group consisting of cobalt compounds and nickel compounds providing cobalt or nickel ions for electrodepositing cobalt or nickel and containing in combination an effective amount of:

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Detroit, MI, United States of America

Frank Passal