Which statement about vinyl esters is true?

Vinyl esters are generally two-component coatings, which means they require a hardener (or curing agent) to achieve their final properties. This characteristic allows for improved performance, such as better chemical resistance and mechanical strength, making them suitable for a variety of industrial applications. The two-component system typically includes a vinyl ester resin and a curing agent that, when mixed, initiate a chemical reaction that leads to the hardening of the material.

While some vinyl esters can be water-based, it is not exclusive to them, and the pot life can vary depending on formulation but is not necessarily long in every case. In contrast, single-component systems do not require mixing with a hardener and cure through different mechanisms (like evaporation or reaction with moisture), which sets them apart from vinyl esters. Therefore, understanding the nature of vinyl esters as two-component systems is key to recognizing their applications and performance characteristics in coatings.