CORROSION-RESISTANT, CHROMIUM-FREE, SELF-PRIMING COATINGS CURABLE BY ULTRAVIOLET LIGHT

摘要

Corrosion-resistant, self-priming coatings that are curable by ultraviolet energy and methods for coating surfaces using such coatings have been provided. In an exemplary embodiment, a method for coating a surface includes formulating a chromium-free, self-priming coating, applying the chromium-free, self-priming coating to the surface, and curing the chromium-free, self-priming coating with ultraviolet light.

主权项

1. A gloss exterior surface of an aircraft, comprising:
an ultraviolet light-cured, single, chromium-free, self-priming coating consisting essentially of an oligomer, a monomer, a photoinitiator, a pigment, and a corrosion inhibitor; the surface of the aircraft comprising aluminum or an aluminum alloy; wherein the single coating provides corrosion resistance, a desired color and gloss to the surface; and wherein the oligomer is selected from the group consisting of aliphatic polyether urethane acrylates, diacrylates, and triacrylates, and aliphatic polyester urethane acrylates, diacrylates, and triacrylates, and the photoinitiator is an acylphosphine oxide or a bisacylphosphine oxide.