Chemetall Gmbh

Carola Komp

Eckart Schonfelder

Joachim Geldner

Franz Dressler

Peter Claude

Stella Bauerochse

Zafer Yuksel

Ralph Van Den Berg

Thomas Kolberg

Manfred Walter

Peter Schubach

Michael Dröge

Eckart Schönfelder

Eckart Schoenfelder

Zafer Yüksel

Ralph Berg Van Den

A method for coating metallic surfaces with aqueous compositions, wherein a silane-based aqueous composition containing at least one silane and/or a related silicon-containing compound and optionally additional components is treated further, for example, at temperatures above 70&#xb0; C., in a pretreatment step without drying the coating, by using at least one aqueous rinse step after this pretreatment step and then performing an electrodeposition coating, in which at least one surfactant is added at least in the last rinse step of the aqueous rinse steps. Coated metallic surfaces are also described.

Method for coating metallic surfaces with a multi-component aqueous composition

The demulsifying cleaning of metallic surfaces which may be contaminated with oil(s) with at least one further nonpolar organic compound, with fat(s), with soap(s), with particulate dirt or with at least one anionic organic compound using an aqueous, alkaline, surfactant-containing bath solutions.

Process for the demulsifying cleaning of metallic surfaces

The invention relates to an aqueous alkaline cleaning composition for cleaning metal surfaces, containing at least one non-ionic surfactant having demulsifying action and based on ethoxylated alkyl alcohols having one or two alkyl groups, each comprising an average of 7.5 to 16.5 carbon atoms, and an average of 5.5 to 18.5 EO groups per alkyl group, and comprising an end group closure or two end group closures, of which at least one end group closure is an isopropyl, isobutyl, tertiary butyl and/or benzyl group, wherein the surfactant is not propoxylated.

Cleaning composition for metal surfaces

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Morfelden-Walldorf, Germany

Carola Komp