Coated metallic article

摘要

A method for coating of a metallic article is provided. According to the method, the metal surface is coated with a composition which comprises a polymer or comprises a two-component system that reacts to form a polymer following application to the metal surface. The composition comprises 70-2700 meq/kg olefinic double bonds which leads to stronger adhesion and to increased corrosion resistance.

主权项

1. A metallic article, comprising:
a surface; and a coating applied to the surface, wherein the coating comprises at least one component having an olefinic double bond selected from the group consisting of: a polyamide which comprises polymerized ethylenically unsaturated dicarboxylic monomer units, a polyurethane which comprises polymerized ethylenically unsaturated dicarboxylic monomer units, and an unsaturated compound having a number average molecular weight (Mn) of 38,000 g/mol or less as determined by vapour pressure osmometry selected from the group consisting of a polyalkenylene, an ester of an unsaturated carboxylic acid, and an ester of an unsaturated alcohol, and a content of olefinic double bonds in the coating is from 70-2700 meq/kg of the coating.