Alkyd resins are synthetic resins obtained by reacting a polyacid with a polyalcohol
and modified with oils or fatty acids.
They are classified based on the type and
amount (length) of oil they carry. They are basically divided into short, medium and long alkyd resins. In
these resins, the length of the oil is what provides the characteristics of
solubility, viscosity, flexibility and hardness. The short and medium alkyds
are usually used in industry and the long ones are more oriented to the
decoration sector.
Alkyd resins are mainly used to obtain oxidative drying enamels
and paints or to obtain 2-component coatings when they react with a hardener
based on isocyanates.
