Specialty Operations France

Chemetall Gmbh

Stefan Birkenheuer

Marie-Pierre Labeau

Guillaume Gody

Nawel Souad Khelfallah

Oliver Sauer

Daniel Schatz

Carina Hecker

Dietmar Chmielewski

Described herein is a method for treatment of a metallic surface, including the step of (A) contacting the metallic surface with a first aqueous composition, and a subsequent step of (B) contacting the metallic surface subsequent to step (A) with a second aqueous composition. Also described herein is a kit-of-parts including the first and second aqueous composition and a kit-of-parts including master-batches of the first and second aqueous compostions. Also described is a method of using the kit-of-parts for treating a metallic surface and substrates including the thus treated metallic surfaces.

Method for treating metallic surfaces with an acidic aqueous composition and a post rinsing composition to improve corrosion resistance

Described herein is a method for treatment of a metallic surface, including the step of contacting the metallic surface with an acidic aqueous composition. Also described herein is an acidic aqueous composition used in the method for treatment, a master batch to produce such acidic aqueous composition, a method of using the acidic aqueous composition to treat metallic surfaces and substrates including the thus treated metallic surfaces.

Method for treating metallic surfaces with an acidic aqueous composition to improve corrosion resistance

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Shanghai, China

Stefan Birkenheuer