Abstract:
Alkyd resins are a special family of polyesters which are mainly limited in application of
surface coatings. The popularity of alkyd resins in surface coating industry throughout the
world is due to cost effectiveness and versatility. Synthesis process of alkyd resins needs
basically three different types of chemical constituents. One type of constituent is polyol
with hydroxyl functionality greater than 2 and second constituent is polybasic acid or acid
anhydride. Usually most of conventional alkyd recipes contain glycerol and pthalic
anhydride. Fatty oils having considerable amount of unsaturated fatty acids are the third
type of raw material for air drying alkyd resins.
