What is a common characteristic of alkyds?

A common characteristic of alkyds is that they undergo an oxidative curing process. This type of curing involves the reaction of air (oxygen) with the components of the alkyd resin, which leads to the hardening and development of a durable film. Alkyds are typically used in both paint and coating applications where a strong, resilient finish is required. This oxidative process contributes significantly to the properties of the cured film, such as adhesion, flexibility, and gloss, making it a defining feature of these types of coatings.

Understanding that alkyds cure through an oxidative mechanism emphasizes their dependence on environmental oxygen, contrasting with other types of coatings that may use different curing agents or processes. This characteristic is fundamental for those working with coatings, as it impacts drying time, application methods, and usability in various environments.