Modification of metal surfaces
AssigneeBASF SE
InventorsHarald Keller, Gerhard Hoffmann, Walter Denzinger, Rainer Fassler
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Abstract
Cleaned or chemically pretreated metal surfaces are modified using aqueous solutions of amino-containing organic polymers, the metal surfaces thus modified being particularly suitable for coating by cathodic electrodeposition.
Claims7
A method of modifying chemically pretreated metal surfaces with aqueous solutions of organic polymers, wherein the chemically pretreated metal surfaces are treated with an aqueous solution of hydrolysis products of polymers comprising units of the formula (I) ##STR3## in which R.sup.1 and R.sup.2 are identical to or different from one another and are hydrogen or alkyl of 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.