Basf Se Corporation

Alexander Göthlich

Gunnar Schornick

Marcus Guzmann

Helmut B Witteler

Frank Dietsche

Thomas Friedrich

Thomas Heidenfelder

Konrad Roschmann

Karin Neubecker

Frank Klippel

Walter Bertkau

Monica Fernandez Gonzalez

Guido Vandermeulen

Hermann Bergmann

Markus Hickl

Dietrich Fehringer

Gerhard Fischer

Matthias Klüglein

Michael Dornbusch

Jens Haas

Dietmar Häring

Lidcay Herrera Taboada

Process for passivating metallic surfaces, and a preparation suitable for implementing the process, comprising at least water, an acid, and a copolymer of functionalized (meth)acrylic esters, monomers containing phosphoric and/or phosphonic acid groups, monomers having COOH groups, and, if appropriate, further monomers. Copolymer which comprises said monomers.

Method of passivating metallic surfaces by means of copolymers having phosphoric acid and/or phosphonic acid groups

Preparation for and a method of applying corrosion control coats to metallic surfaces, particularly the surfaces of metallic structures or metal constructions, the preparation comprising at least one binder system curable under atmospheric conditions, a dicarboxylic acid-olefin copolymer, and a finely divided filler, pigment or dye. Coated metallic surface obtainable by means of the method, especially the surface of metallic structures or metal constructions.

Preparation for and method of applying corrosion control coats

Method of applying corrosion control coats, especially integrated pretreatment layers or coats for atmospheric corrosion control, to metallic surfaces, using copolymers comprising as monomeric building blocks 20% to 70% by weight of monomers containing nitrogen heterocycles, 10% to 50% by weight of monomers containing acidic groups, 10% to 50% by weight of vinylaromatic monomers, and optionally 0% to 25% by weight of further monomers. Copolymers of the stated composition, and also preparations for applying corrosion control coats.

Method for the application of corrosion-resistant layers to metallic surfaces

The present invention relates to a substantially chromium-free process for passivating metallic surfaces of Zn, Zn alloys, Al or Al alloys by treating the surface with an acidic aqueous formulation which comprises at least one substantially noncrosslinked, water-soluble polymer or copolymer containing at least 50% by weight of (meth)acrylic acid units and comprises water or an aqueous solvent mixture comprising at least 50% by weight of water, and by further treating the surface with at least one water-soluble crosslinker comprising at least 2 crosslinking groups selected from the group consisting of azirane, oxirane, and thiirane groups. The invention further relates to passivating layers obtainable by means of the process and to a formulation suitable for this process.

Essentially chromium-free method for passivating metallic surfaces consisting of Zn, Zn alloys, Al or Al alloys

Process for the passivation of metallic surfaces, in particular of strip metals, by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and at least one wax.

Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes

Process for the passivation of metallic surfaces by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and Zn, Ca, Mg or Al ions, said process being in particular a continuous process for the passivation of strip metals.

Method for the passivation of metal surfaces with polymers containing acid groups

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Mannheim, Germany

Alexander Göthlich