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AssigneesChemetall GmbH, Rhodia Operations
InventorsNawel Souad Khelfallah, Olaf Dahlenburg, Lisa Seider, Marie-Pierre Labeau, Guillaume Gody
Estimating the term…
Described herein is a method for treatment of at least one surface of a metal containing substrate including at least contacting the surface with an aqueous acidic Ni-free composition (A) including at least zinc cations, manganese cations, and phosphate anions to form a conversion coating on the surface and contacting the formed coating with an aqueous Ni-free composition (B) including one or more linear polymers (P) containing at least vinyl phosphonic acid, (meth)acrylic acid, and hydroxyethyl- and/or hydroxypropyl (meth)acrylate in form of their polymerized monomeric units. Also described herein is the composition (B), a master batch to produce the composition (B), a kit-of-parts including both compositions (A) and (B), a kit-of-parts including respective master batches to produce both compositions (A) and (B), and a coated substrate obtainable by the method described herein.
A method for treatment of at least one surface of a substrate, wherein said surface is at least partially made of at least one metal, the method comprising at least steps (1) and (3), namely,
Dependencies are inferred from the claim text.