COATING COMPOSITION WITH ANTICORROSION EFFECT

摘要

The present invention relates to a coating composition comprising at least one binder (A) comprising at least one polymeric resin (A1) and at least one crosslinking agent (A2), at least one anticorrosion pigment (B), and at least one organic solvent (C), where (B) is an alloy of Zn and Mg and optionally at least one further metal and/or semimetal, the coating composition having a pigment volume concentration (PVC) in a range from 5.0% to 25.0%, and comprising the anticorrosion pigment (B) in an amount in a range from 5.0 to 25.0 wt %, based on the total weight of the coating composition, to the use thereof for the at least partial coating of a metallic substrate with a primer coat, to a method for the at least partial coating of such a substrate with such a primer coat, to a substrate at least partially coated therewith, and to a component or article produced from such a substrate.

主权项

1: A coating composition, comprising:
at least one binder (A) comprising at least one polymeric resin (A1) and at least one crosslinking agent (A2), at least one anticorrosion pigment (B), and at least one organic solvent (C), and optionally at least one further component (D), wherein the anticorrosion pigment (B) is an alloy of zinc and magnesium and optionally at least one further metal and/or semimetal, and comprises zinc in an amount of at least 70 wt %, magnesium in an amount of at least 20 wt %, and the optionally present at least one further metal and/or semimetal in an amount of at most 10 wt %, based in each case on the total weight of the anticorrosion pigment (B), where the amounts in % by weight of zinc, of magnesium, and of the optionally present at least one further metal and/or semimetal that are present in the anticorrosion pigment (B) add up in total to 100 wt %, wherein the coating composition has a pigment volume concentration (PVC) in a range from 5.0% to 25.0%, and wherein the coating composition comprises the anticorrosion pigment (B) in an amount in a range from 5.0 to 25.0 wt %, based on the total weight of the coating composition.