Betz Laboratories, Inc.

Betzdearborn, Inc.

Man-gill Chemical Company

Betz Entec, Inc.

David W Reichgott

Fu Chen

Roger C May

Michael A Cady

Sydia B Anderson

Lothar S Sander

Brenda S Morris

Anita G Monino

William S Carey

Alan E Goliaszewski

Deborah L Purnell

Michael J Leary

Jiangbo Ouyang

Richard P O'Leary

E Paul Holder

Frederick C Klaessig

Pamela J Peerce-Landers

Edward M Musingo

William J Neill

Michael D Hnatin

The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.

Methods of inhibiting corrosion using halo-benzotriazoles

Methods and compositions for pretreating a metal surface are provided. The methods comprise applying to the metal surface a hydrolysate of a copolymer of an unsaturated carboxylic acid or derivative thereof and a vinyltrialkoxysilane compound. Novel zinc salt hydrolysate compositions and zirconium salt hydrolysate compositions are also disclosed.

Methods and compositions for pretreatment of metals

A non-chromate conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of a cationic polymer, an alkaline aqueous silicate and an organofunctional silane.

Composition and process for treating metal surfaces

A non-chromium conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of an anionic polyacrylamide copolymer, an inorganic silicate and an organofunctional silane.

Composition and process for coating metals

Methods of forming a dried in place conversion coating on metal surfaces such as aluminum and aluminum alloys. The methods comprise contacting the metal with an aqueous solution of a water soluble maleic or acrylic acid/allyl ether copolymer alone or with an acid.

Method and composition for treatment of aluminum

A composition useful as a rinse aid for metal surfaces and for improving the mobility of formed metal surfaces is described. The composition comprises

Rinse aid and lubricant

An additive for a single stage aqueous alkaline cleaning composition for metal surfaces which imparts improved lubricity to the metal surfaces being treated. The additive is a fatty amine, preferably an ethoxylated fatty diamine.

Lubricating metal cleaner additive

Methods of forming a conversion coating on metal surfaces such as galvanized steel are provided. The methods comprise reacting the metal surface with an aqueous solution of a water soluble polyacrylic acid or homopolymer thereof, maleic or acrylic acid/allyl ether copolymer alone or with an acid.

Method and composition for treatment of galvanized steel

A method and composition for sealing of a conversion coating is disclosed. The method includes contacting a metal substrate, to which has been applied a conversion coating, with an aqueous solution including a heterocyclic alcohol. The preferred heterocyclic alcohol is tetrahydro-2-furanmethanol. The sealer may dry in place or be followed by a water rinse.

Growing community of inventors

Richboro, PA, United States of America

David W Reichgott