Betzdearborn, Inc.

Ge Betz, Inc.

Joseph E Murphy

Edward A Rodzewich

Jiangbo Ouyang

Bruce Haberle

Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings formed from these compositions provide improved corrosion resistance to metal substrates and provide a uniform layer for the application of paint finishes. Processes of making and using these compositions are also disclosed.

Tri-cation zinc phosphate conversion coating and process of making the same

Methods and compositions for providing a conversion coating to a metal surface are provided. The methods comprise applying to a metal surface an aqueous composition comprising a diglycidyl ether of Bisphenol A, a fluoroacid, and a silicon compound containing a hydrolyzable group.

Chromium-free conversation coating and methods of use

Methods for providing a conversion coating to a metal surface are provided. The methods comprise applying to a metal surface an aqueous composition comprising a diglycidyl ether of Bisphenol A, a fluoacid, and a silicon compound containing a hydrolyzable group.

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Lansdale, PA, United States of America

Joseph E Murphy