The European UP/VE Resin Sector Group

The European UP/VE Resin Sector Group represents suppliers of the unsaturated polyester (UP) and epoxy vinyl ester (VE) resins.


MC: S. Osterwind, AOC

TTF: A. Hamarneh, AOC



Unsaturated polyester (UP) resins and epoxy vinyl ester (VE) resins are liquid products containing linear unsaturated polyester polymers respectively epoxy vinyl ester polymers (50-70%) and mainly styrene (30-50%). The role of styrene, a reactive diluent, is first to dissolve the polymers for good application properties when adding the reinforcement and secondly to take part in the curing process by cross linking the linear polymers and creating the final reinforced structure or composite.



4 members:

AOC, INEOS Composites Hispania S.L., Polynt Reichhold, Scott Bader Co Ltd.



By choosing different raw materials in building the linear UP/VE polymer, different final properties of the composites can be achieved like; high mechanical strength compared to weight, excellent corrosion resistance, electrical properties (isolating), good thermal properties and flame-retardant properties, etc.



Composites built of UP/VE resins, glass fibers and/or other reinforcements are used in market sectors like:

  • Building (panels, corrugated/flat sheets, profiles, infrastructure, bridges, sanitary ware, swimming pools, subsea construction etc.)
  • Tanks, Containers, Pipes (incl. relining of pipes)
  • Electrical (wind turbines, appliance, circuitry boxes)
  • Marine (pleasure boats, utility vessels)
  • Automotive (cars, trucks, trains, container panels)
  • Castings (artificial stone, cultured marble etc.)
  • Formulated products (gelcoats, adhesives, putties)

Safe Handling Guides

The UP Resin Safe Handling Guides address the key health, safety and environmental issues associated with the storage and processing of raw materials in the UP/VE resin industry. This includes advice and guidance to ensure good housekeeping when using UP resins, as well as specific recommendations on styrene exposure and abatement, Personal Protective equipment (PPE), and legislation governing UP resins in the EU.


For more information:


Sector Group Manager

Ana Martin Hoyas


Lorena Aranda