Unsaturated polyester resins are synthetic resins that are formed by the reaction of dibasic organic acids and polyhydric alcohols. They have many uses, including:
Glass fiber reinforced plastics (FRP): These are widely used in housing equipment, construction material, and transportation equipment.
Sheet moulding compound and bulk moulding compound: These are used in the manufacturing of sheet moulding compound and bulk moulding compound.
Laser printer toner: Polyester resins are used in the toner of laser printers