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2. Polyester resin - Wikipedia

   en.wikipedia.org/wiki/Polyester_resin

   Polyester resins are synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Maleic anhydride is a commonly used raw material with diacid functionality in unsaturated polyester resins. [1] Unsaturated polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers.

3. Polyester - Wikipedia

   en.wikipedia.org/wiki/Polyester

   Polyester is a category of polymers that contain one or two ester linkages in ... Unsaturated polyesters are produced from multifunctional alcohols and unsaturated ...

4. Thermoset polymer matrix - Wikipedia

   en.wikipedia.org/wiki/Thermoset_polymer_matrix

   Unsaturated polyester resins are an extremely versatile, [12] [13] and fairly inexpensive class of thermosetting polymer formed by the polycondensation of glycol mixtures often containing propylene glycol, with a dibasic acid and anhydrides usually maleic anhydride to provide backbone unsaturation needed for crosslinking, and phthalic anhydride ...

5. Gelcoat - Wikipedia

   en.wikipedia.org/wiki/Gelcoat

   Gelcoat or gel coat is a material used to provide a high-quality finish on the visible surface of a fibre-reinforced composite.The most common gelcoats are thermosetting polymers based on epoxy or unsaturated polyester resin chemistry.

6. Resin casting - Wikipedia

   en.wikipedia.org/wiki/Resin_casting

   The so-called synthetic resins used include polystyrene resin, polyurethane resin, epoxy resin, unsaturated polyester resin, acrylic resin and silicone resin. Epoxy resin has a lower viscosity than polyurethane resin [citation needed]; polyester resin also shrinks markedly while curing. [1]

7. Propylene glycol - Wikipedia

   en.wikipedia.org/wiki/Propylene_glycol

   Forty-five percent of propylene glycol produced is used as a chemical feedstock for the production of unsaturated polyester resins. In this regard, propylene glycol reacts with a mixture of unsaturated maleic anhydride and isophthalic acid to give a copolymer. This partially unsaturated polymer undergoes further crosslinking to yield thermoset ...

8. Synthetic resin - Wikipedia

   en.wikipedia.org/wiki/Synthetic_resin

   A large category of resins, which constitutes 75% of resins used, [citation needed] is that of the unsaturated polyester resins. The production of PVC entails the production of "vinyl chloride resins", which differ in the degree of polymerization. [5]

9. Isophthalic acid - Wikipedia

   en.wikipedia.org/wiki/Isophthalic_acid

   Isophthalic acid is an organic compound with the formula C 6 H 4 (CO 2 H) 2.This colorless solid is an isomer of phthalic acid and terephthalic acid.The main industrial uses of purified isophthalic acid (PIA) are for the production of polyethylene terephthalate (PET) resin and for the production of unsaturated polyester resin (UPR) and other types of coating resins.