Coating composition
Assigneesvoestalpine Stahl GmbH, Salzgitter Flachstahl GmbH, Mercedes-Benz Group AG, G & S Solution GmbH
InventorsRobert MAYRHOFER, Frank BEIER, Karl-Heinz STELLNBERGER, Georg GROS
Life of this patent
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Abstract
A composition for coating metal surfaces includes a binding agent having a phenolic resin, an epoxy resin, in particular phenoxy resin, a polyester resin (soft resin) and a polyisocyanate, further having at least one conductive pigment, a corrosion resistant pigment and a solvent. The coating layer obtained from the composition by drying is corrosion-resistant, non-flammable, forming-compatible and weldable.
Claims16
A composition for coating metal surfaces, comprising:
- a binder, comprising:
- 2 to 15% by weight phenol resin;
- 1 to 10% by weight epoxy resin;
- 0.1 to 5% by weight polyester resin;
- 1 to 10% by weight polyisocyanate;
- 50 to 90% by weight of at least one conductive pigment;
- and
- 0.1 to 15% by weight of an anticorrosion pigment;
- wherein all of the percentages relate to the solid;
- and
- 5-80% by weight of a solvent, in relation to the overall composition.
A metal sheet or object having a coating, comprising:
- a thermosetting matrix, in particular an isocyanate cross-linked thermosetting matrix, comprising:
- a phenol resin;
- an epoxy resin, in particular a phenoxy resin;
- and
- a polyester resin;
- a conductive pigment suspended in the thermosetting matrix;
- and
- an anticorrosion pigment suspended in the thermosetting matrix.
Dependencies are inferred from the claim text.