Omi International Corporation

Oxy Metal Industries Corporation

Occidental Chemical Corporation

Ebara-Udylite Co., Ltd.

Sylvia Martin

Roy W Herr

Kenneth D Snell

R Wilbur Herr

Alice M Strom

Robert A Tremmel

Walter J Wieczerniak

Masaaki Kamitani

Daniel J Combs

Hans-Gerhard Creutz, Deceased

Donald Harvey Becking

Ryoichi Kimizuka

Hans G Creutz, Deceased

Hans Gerhard Creutz

Takaaki Koga

Debra J Saez

Bento DaFonte, Jr

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 codeposition of the alloying metals in the zinc alloy deposit. The additive agent comprises a bath soluble terminally substituted polyoxyalkylene compound derived from the sulfation, amination, phosphating, chlorination, bromination, phosphonation, and sulfonation as well as combinations thereof;

Zinc alloy electrolyte and process

An aqueous bath suitable for electrodepositing zinc and alloys of zinc including zinc-nickel, zinc-cobalt, zinc-nickel-cobalt, zinc-iron, zinc-iron-nickel, zinc-iron-cobalt, and zinc-nickel-cobalt-iron containing a brightening amount of an AABB-type polyamide brightener in an amount effective to produce an electrodeposit of the desired brightness. The invention further contemplates the process of electrodepositing zinc and zinc alloys of the foregoing types on a conductive substrate employing the aqueous electrolyte.

Zinc and zinc alloy electrolyte and process

An aqueous acidic electrolyte of the chloride, sulfate and mixed chloride-sulfate types suitable for electrodepositing a zinc-nickel alloy on a conductive substrate comprising an aqueous solution containing zinc ions and nickel ions, and an additive agent of a class selected from the group consisting of (a) aromatic sulfonic acids, (b) aromatic sulfonamides, sulfonimides and mixed carboxamides/sulfonamides, (c) acetylene alcohols as well as the bath soluble and compatible salts and mixtures thereof. The invention further encompasses the process for electrodepositing a zinc-nickel alloy employing the aforementioned electrolyte.

Zinc-nickel alloy electrolyte and process

An improved aqueous acidic zinc electrolyte and process for electrodepositing zinc on a conductive substrate in which the electrolyte contains a brightening amount of a bath soluble anionic sulfated polyoxyalkylene surfactant derived from the sulfation of:

Zinc electroplating and baths therefore containing carrier brighteners

An aqueous acid electroplating solution and process for electrodepositing an adherent, ductile zinc, zinc-cobalt, zinc-nickel, zinc-cobalt-nickel alloy deposit on a conductive substrate which contains a comparatively low concentration of boric acid to inhibit formation of bath insoluble polyborate compounds and contains an effective amount of a polyhydroxy additive agent containing at least 3 hydroxyl groups and at least 4 carbon atoms of the structural formula: ##STR1## as hereinafter more specifically defined. The electroplating solution further contains conventional acid zinc and zinc alloy bath constituents and supplemental additive agents of the types known in the art.

Acid zinc and zinc alloy electroplating solution and process

An aqueous bath suitable for electrodepositing zinc and alloys of zinc including zinc-nickel, zinc-cobalt, zinc-nickel-cobalt, zinc-iron, zinc-iron-nickel, and zinc-iron-cobalt containing a brightening amount of an AB-type polyamide brightener in an amount effective to produce an electrodeposit of the desired brightness. The invention further contemplates the process of electrodepositing zinc and zinc alloys of the foregoing types on a conductive substrate employing the aqueous electrolyte.

Zinc and zinc alloy electroplating bath and process

A zinc/iron alloy electroplating bath comprising a conductive aqueous solution containing zinc ions, iron ions, and a brightening additive which is a derivative of B-aminopropionic acid or a polymer thereof. A semi-bright to bright zinc/iron alloy deposit can be electrodeposited from the bath onto a substrate.

Zinc-iron alloy electroplating baths and process

An acid zinc alloy electroplating bath such as a zinc-nickel and/or cobalt bath and process employing said bath which contains an effective amount of a brightening agent selected from a bath soluble polyacrylamide polymer, N-substituted polyacrylamide derivative, and copolymers thereof. The zinc alloy electroplating is economical and versatile in use and produces a ductile, corrosion resistant plating deposit having a semi-bright to bright appearance.

Brightening composition for zinc alloy electroplating bath and its

A zinc alloy plating bath comprises a conductive aqueous solution containing zinc ions and nickel and/or cobalt ions and a brightening additive which is a derivative of .beta.-aminopropionic acid or a polymer thereof. A semi-bright to bright zinc alloy deposit can be electrodeposited from the bath onto a substrate.

Zinc alloy plating baths with condensation polymer brighteners

A zinc plating bath comprises a conductive aqueous solution containing zinc ions and a brightening additive which is a derivative of .beta.-aminopropionic acid or a polymer thereof. A ductile zinc deposit having a uniform high degree of brightness can be electrodeposited from the bath onto a substrate.

Zinc plating baths with condensating polymer brighteners

An aqueous acidic or alkaline zinc electroplating solution and process for producing a bright, adherent and ductile zinc deposit on conductive substrates incorporating a primary brightening agent comprising a compound or mixture of compounds represented by the structural formulae: ##STR1## The brightening agent is present in a controlled effective amount to provide a brightening and ductilizing of the deposited zinc plating. The electroplating solution further can incorporate conventional constituents and supplemental additives of the types well known in the art.

Brightener for zinc electroplating solutions and process

A non-cyanide zinc electroplating bath containing an effective brightening and leveling amount of a leveling and brightening agent comprising a bath soluble butyl nicotinate sulfate or sulfonated quaternary salt. The electroplating bath may further advantageously incorporate an effective brightening amount of a polyether compound as a supporting brightening agent and an effective leveling amount of methane sulfonic acid and salts thereof as a supporting leveling agent. The improved leveling of the bright electrodeposited zinc plate in accordance with the process aspects is attained over a relatively broad range of pH from about 2.0 to 7.5, and current density.

Electroplating bath and process

An acid zinc electroplating bath and bright zinc plating process employing said bath which contains an effective amount of a controlled mixture of brightening agents including a bath soluble polyacrylamide polymer and N-substituted polyacrylamide derivatives thereof as well as copolymers thereof as a primary brightener in combination with a secondary brightener comprising boric acid and Group I and II metal salts thereof and/or thiourea and N-substituted derivatives thereof as well as selected adducts thereof. The acid zinc electroplating bath incorporating the mixture of primary and secondary brightening agents is economical and versatile in use and produces a ductile plating deposit having a lustrous appearance.

Brightening composition for acid zinc electroplating bath and process

An improved solution and process for depositing bright zinc coatings employing an aqueous solution containing zinc ions and an effective amount of a brightening agent comprising a bath soluble cationic alkylated condensation polymer obtained by alkylating a condensation polymer of an epihalohydrin and a heterocyclic compound containing at least 2 nitrogen atoms with a trialkyl ammonio-halo-alkyl halide salt.

Ductile bright zinc electroplating bath and process and additive therefor

A process and bath for electropolishing and brightening aluminum and aluminum alloys. The bath preferably contains from about 30 percent to about 95 percent phosphoric acid and from about five percent to about 70 percent of a poly (alkylene ether). A minor amount, generally from about 0.05 to about two percent, of a wetting agent may be added to the bath if desired. The bath forms a protective foamy film over the part being electroplated, thereby protecting the part against chemical attack by the bath. Further, the polyether additives are chemically and thermally stable in the electrolyte under normal bath operating conditions. The bath may be operated at low voltages ranging from about 15 to 100 volts.

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Detroit, MI, United States of America

Sylvia Martin