The alkyd resins belong to the family of thermosetting polyesters, organic macromolecules obtained through the reaction between an acid or an anhydride, an alcohol and a fatty acid or an oil.

 The polymer structure of the alkyd resins makes them particularly suitable to be used as a basis for enamels and paints with different specific characteristics. The paints based on alkyd resins have been among the first to be used in the field of the construction industry and, still today, they represent a preferred choice for the treatment of various materials, both for exterior and interior. Also alkyd resins as film formers continue to be one of the largest types of coatings used in the world.