Verfahren und Lösung zum Nachbehandeln von phosphatierten Metalloberflächen

A process for the aftertreatment of phosphatized metal surfaces to improve the corrosion resistance thereof comprises treating said surface with an aqueous and/or alcoholic solution containing (1) at least one monomeric alkene phosphonic acid (e.g. allyl, vinyl or propene phosphonic acid) and (2) at...

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Bibliographische Detailangaben
Hauptverfasser:	WAGNER,ERNST, HERBST,WILLY
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS BASED THEREON CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	A process for the aftertreatment of phosphatized metal surfaces to improve the corrosion resistance thereof comprises treating said surface with an aqueous and/or alcoholic solution containing (1) at least one monomeric alkene phosphonic acid (e.g. allyl, vinyl or propene phosphonic acid) and (2) at least one macromolecular compound of vinyl phosphonic acid and/or a derivative thereof and/or a polymer which contains an acid group but which is free from phosphorus, the metal surfaces then being dried (e.g. at 80-200 DEG C.). The macromolecular compound may be a homopolymer of vinyl phosphonic acid, a copolymer of an acid derivative of vinyl phosphonic acid (e.g. semi ester thereof with acrylic acid, methacrylic acid or amides, nitriles or esters of these, maleic acid anhydride or crotonic acid). The ratio of monomer to polymer is preferably in the range 98:2 to 20:80 and the total amount of monomer + polymer is less than 10% by weight, preferably 0.008-2%. A wetting agent may be added to the treating solution. The treatment time may be from 3 seconds to 3 minutes at a temperature of 4-70 DEG C. Specification 961,220 is referred to.ALSO:A process for the aftertreatment of phosphatized metal surfaces, e.g. steel plates, to improve the corrosion resistance thereof comprises treating said surface e.g. by dipping or spraying with an aqueous and/or alcoholic solution containing (1) at least one monomeric alkene phosphonic acid (e.g. allyl, vinyl or propene phosphonic acid), and (2) at least one macromolecular compound of vinyl phosphonic acid and/or a derivative thereof and/or a polymer which contains an acid group but which is free from phosphorus, the metal surfaces then being dried (e.g. at 80-200 DEG C.). The macromolecular compound may be a homopolymer of vinyl phosphonic acid, a copolymer of an acid derivative of vinyl phosphonic acid (e.g. semi-ester thereof with acrylic acid, methacrylic acid or amides, nitriles or esters of these, maleic acid anhydride or crotonic acid). The ratio of monomer to polymer is preferably in the range 98 : 2 to 20 : 80 and the total amount of monomer and polymer is less than 10% by weight (preferably 0,008-2%). A wetting agent may be added to the solution. The treatment time may be 3 seconds to 3 minutes at a temperature of 4-70 DEG C. Specification 961,220 is referred to.