ANTI-CORROSION AGENT FORMING A COATING FILM WITH GOOD ADHESION AND METHOD FOR NON-GALVANIC APPLICATION THEREOF

Aqueous composition for coating metal substrates comprises a water-soluble or -dispersible polymer that has a concentration gradient of hydrophilic groups along the polymer backbone, has a crosslinking functional group and is covalently bonded to a chelating ligand. Independent claims are also inclu...

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Bibliographische Detailangaben
Hauptverfasser:	AUSTRUP, ELKE, HINTZE-BRUENING, HORST, DORNBUSCH, MICHAEL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Aqueous composition for coating metal substrates comprises a water-soluble or -dispersible polymer that has a concentration gradient of hydrophilic groups along the polymer backbone, has a crosslinking functional group and is covalently bonded to a chelating ligand. Independent claims are also included for: (1) autophoretic application of a composition as above to give a 5-900 nm thick coating; (2) autophoretic application of a composition as above by dipping a substrate in a bath of the composition at 20-90[deg] C for 1 second to 15 minutes; (3) producing an anticorrosion finish on metal substrates by dipping the substrate in a bath of corrosion inhibitor to effect conversion on the substrate surface and then dipping the substrate in a bath of a composition as above.