Unsaturated Polyester Resins are condensation polymers formed by the reaction of polyols with saturated and unsaturated dibasic acids. Polyester resins are used in GRP Pipes, Tanks, Ducts, Sheet Moulding Compound (SMC), Cultured Marble, Marine, Wind Energy, Transport, Building and Construction industries.

The applications of the unsaturated polyester resin are varied. The polyester resins, in fact, represent one of the absolute compounds used in a wide range of industries. The most important, as well as those illustrated above are: Composite materials, Wood paints .