Chromium-free coating composition with anti-corrosive effect for metallic substrates

A process for at least partially coating a metallic substrate with a priming coat comprising,

• at least partially contacting the metallic substrate with the coating composition comprising
• at least one binder comprising
• at least one synthetic resin;
• and
• at least one crosslinker;
• at least one iron(III)-tris(N,N-dithiocarbamate) complex of the general formula (I) comprising [R1—N(—R2)—C(═S)—S]3Fe+III
• wherein
• (i) R1 and R2, independently comprise a univalent linear, branched or cyclic aliphatic hydrocarbon radical with 1 to 10 carbon atoms;
• or
• (ii) R1 comprises a divalent linear or branched aliphatic hydrocarbon radical with 1 to 10 carbon atoms, R2 represents a covalent bond and R1 is linked the covalent bond with the nitrogen atom of formula (I);
• and
• wherein the water content in the coating composition is at least 50.0 wt. % based on the total content of liquid diluents present in the coating composition.

A metallic substrate coated at least partially with a coating composition the coating composition comprising:

• at least one binder comprising
• at least one synthetic resin;
• and
• at least one crosslinker;
• at least one iron(III)-tris(N,N-dithiocarbamate) complex of the general formula (I) comprising [R1—N(—R2)—C(═S)—S]3Fe+III
• wherein
• (i) R1 and R2, independently comprise a univalent linear, branched or cyclic aliphatic hydrocarbon radical with 1 to 10 carbon atoms;
• or
• (ii) R1 comprises a divalent linear or branched aliphatic hydrocarbon radical with 1 to 10 carbon atoms, R2 represents a covalent bond and R1 is linked by means of the covalent bond with the nitrogen atom of formula (I);
• and
• wherein the water content in the coating composition is at least 50.0 wt. % based on the total content of liquid diluents present in the coating composition.