Polyester resins are unsaturated synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers. Wall panels fabricated from polyester resins reinforced with fiberglass so called fiberglass reinforced plastic (FRP) are typically used in restaurants, kitchens, restrooms and other areas that require washable low-maintenance walls. Polyester resins are thermosetting and as with other resins, cure exothermically. Polyester resin is widely used in composites industries. It is also used in textile sizing.
Synonym: Fiberglass Resins
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