Alkyd resins are polyester-based resins modified with fatty acids. The oil length (short, medium, or long) determines the properties and applications of the resin.
Paints and Coatings
Alkyd resins are widely used in paints and coatings for their excellent adhesion, durability, and gloss. Short oil alkyds are used in fast-drying industrial coatings, medium oil alkyds in architectural paints, and long oil alkyds in exterior wood coatings.