Surfaces with high gloss coatings are employed in a variety of applications including handheld electronics, appliances, displays and automotive interiors. Routine use of these articles inevitably leads to smudges and fingerprints from the user. These surface defects are undesirable by end users and are cleaned off with some effort, which can further risk scratching of the glossy surface, and inconveniencing the user.
A coating which can render a surface highly resistant to the appearance of fingerprints and smudges is desired.
State-of-the-art technologies that are highly resistant to fingerprints and smudges are generally low gloss coatings or high gloss coatings specially formulated to resist cleaning agents and abrasion. The desired solution will be adaptable to a high gloss, thin film build coating (20-30 microns (0.8-1.2 mils) dry film thickness), with improved resistance to fingerprints and smudges. In addition to the preceding requirements, the coating must have other important properties typical of high performance coatings such as light fastness, hardness, chip/scratch/abrasion resistance, and chemical resistance (alcohol , household cleaners (ammonia, butyl cellosolve)). Coatings capable of this performance are often based on ultraviolet cure, polyurethane or melamine chemistries.
Substrates include a variety of plastics (PC, PC/ABS, Nylon, and others - this could include non-polar substrates, but adhesion to these can be accomplished via other coating materials and methods), some metals, and other coated surfaces.