Polyester Resin

Other Trading Names:

  • Tianfu-Chem Polyester Resin
  • Fatty Acids
  • Castor-Oil
  • Caustic-Oxidized, Distn
  • Residues, Esters With 1,3-Butanediol

CAS Number:  113669-95-7

HS Code: 39079120

Types of Packaging:

  • 220kg/metal barrel
Inquiry right-arrow $100.00
Availability: In stock
Polyester Resin

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Light yellow transparent thick liquid


Acid value






Solid content



Gel Time,25℃



Heat stability 80 ℃

≥24 h


Chemical Description

  • Polyester is a type of polymer that contains an ester functional group in its main chain.
  • There are many different types of polyesters, but the term "polyester" usually refers to polyethylene terephthalate(PET).
  • It is the abbreviation of a synthetic man-made polymer.Polyester is known as the tofu of man-made fibers because of its many forms of appearance.
  • It is a generic term for any fabric or textile, and polyester is one of the world's most popular textile fabrics and a source of material for a wide variety of clothing, used in many consumer and industrial applications.
  • You can define the polyester resin as a polymer obtained by the polycondensation reaction between polyacids and polyalcohols.
  • The development of water is the by-product of this polycondensation process. Specifically, the unsaturated polyester resin, also known by the English acronym UPR, is an easily printable liquid polymer which, once cured (cross-linked with styrene, by the use of particular substances, organic peroxides, named hardeners), keeps the solid shape taken in the mold.
  • The items so realized have exceptional strength and durability characteristics. Unsaturated polyester resins are mostly used in combination with reinforcing materials such as glass fibers, that give life to the FRP (an acronym deriving from the English), a polyester reinforced with glass fibers, better known with the name of fiberglass.
  • In this case, the polyester resin has an array function, channeling the forces applied to the material to the fibers that are designed to withstand these forces, increasing the strength and avoiding breakages of the product.
  • Together with or separately from the glass fibers, the liquid unsaturated polyester resin may be loaded with powders or granules of various sizes, which give details of rigidity and resistance characteristics, or aesthetic qualities to the imitation of natural marble and stones, sometimes with better results.
  • The main features of the unsaturated polyester resins include: Liquid, in their use: Poor linear shrinkage/ Excellent wettability of the fibers and charges/ Cold cross-linking by addition of hardener/ Minimisation of the effect of sagging in vertical stratification (thixotropic properties)
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Polyester Resin