Betz Laboratories, Inc.

General Electric Company

Other

Betzdearborn, Inc.

Chemetall Gmbh

Bl Technologies, Inc.

Philip D. Deck

William S. Carey

Bret Chisholm

Edward A. Rodzewich

Donald W., Jr, Whisenhunt

Jeffrey I. Melzer

David B. Engel

Christopher M. Carter

Philip D Deck

William L Harpel

Jiangbo Ouyang

Bruce V Haberle

Donald Wayne Whisenhunt, Jr

Jeffrey I Melzer

Rosa Crovetto

Claudia C Pierce

Bret Ja Chisholm

Edward A Rodzewich

David Birenbaum Engel

William S Carey

Jose B Rivera

Guruprasad Sundararajan

Edward M Musingo

Christopher M Carter

Donald Wayne Whisenhunt

Rajendra Prasad Kalakodimi

Beena George

Donald W Whisenhunt

Davidl B Engel

Jr Donald W

Chromate-free and metal phosphate free treatments and compositions for applying a conversion or passivation coating for metals, more particularly, steel, zinc coated steel, and aluminum surfaces. The methods of the invention comprise contacting the requisite metal surface with a treatment composition comprising a member or members comprising one or more Group IV B elements, fluoride, and phosphonic acid or phosphonate. Optionally, a silane may be added as a treatment component.

Rinsable metal pretreatment methods and compositions

Methods and compositions are provided for corrosion inhibition treatment of aqueous systems such as cooling water systems. The methods include conjoint use of a polyvalent metal ion, such as Al or Mn and a corrosion inhibitor/deposit control agent (DCA) to the water system. The corrosion inhibitor DCA agent may be an organic compound such as a hydroxyacid, phosphonocarboxylic acid, polyhydroxysuccinic acid, or polymaleic acid or anhydride.

Compositions and methods for inhibiting corrosion in aqueous media

Methods are provided to inhibit corrosion of metals in contact with aqueous systems such as cooling water systems. In accordance with the methods, a hydroxyacid compound and orthophosphates are used to treat the system. Additionally, an adjuvant including poly(epoxysuccinic acids), an additional hydroxy acid, and a polycarboxylic acid, may be added to the system water.

Methods for inhibiting corrosion in aqueous media

A method of cleaning metal surfaces by using a composition of citric acid, a hydroxycarboxylic acid salt, a nonionic surfactant and a coupling agent is used for cleaning metal surfaces and methods of using the same.

Metal cleaning method

A method of providing color to a polyacrylamide based, dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solution provides for a colored conversion coating without adversely affecting the corrosion resistance or adhesion properties of the conversion coating.

Visible dried-in-place non-chrome polyacrylamide based treatment for

An aqueous coating solution for zinc containing metals such as galvanized iron and steel. The coating solution is resistent to the formation of zinc induced sludge and can be operated with little or no overflow. The aqueous treatment solution contains from 0.1 to 10 grams per liter of a fluorometallic acid, from 0.015 to 6 grams per liter of a salt of a transition metal, from 1 to 30 grams per liter zinc; and optionally from 0.1 to 3 grams per liter a polymer of acrylic acid, methacrylic acid, or an ester thereof with a C1 to C8 alkanol.

Treatment for galvanized metal

A non-chromate pretreatment for aluminum and zinc-aluminum galvanized steel is disclosed which comprises a polyacrylic acid or homopolymers and copolymers thereof, a molybdate, and a dihydrohexafluo acid.

Method and composition for treatment of metals

A method of providing color to a dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solution provides for a colored conversion coating without adversely effecting the corrosion resistance or adhesion properties of the conversion coating.

Visible dried-in-place non-chrome treatment for aluminum

A cleaning and etching solution and method for metal surface is disclosed which is an alkaline formulation which includes a surfactant combination of a low foaming ethylene oxide - propylene oxide block copolymer surfactant and a defoaming reverse ethylene oxide - propylene oxide block copolymer. The preferred cleaner includes an alkali metal hydroxide, an alkali metal salt of gluconic acid and preferably an alkali tripolyphosphate and the surfactant combination.

Low foaming alkaline cleaner comprising a surfactant mixture of an

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Ardsley, PA, United States of America

Philip D Deck