Resin chemistry · SPR 501
Vinyl Ester Resins
Vinyl ester resins are made by reacting an epoxy resin with acrylic or methacrylic acid, then dissolving the result in styrene. They are cured like polyesters but sit between polyester and epoxy in chemical resistance, toughness and cost, which is why they are specified for corrosion-resistant linings and chemical-service structures.
Grades in this family
Vinyl ester grade
- SPR 501 VEVinyl Ester ResinCorrosion-resistant FRP linings and chemical-service composite structures.
Selection guidance
- Choose vinyl ester over an isophthalic polyester when the chemical, its concentration or the service temperature is beyond what an isophthalic laminate is specified for.
- Chemical resistance depends on the specific chemical, concentration and temperature. Describe the service when you enquire; no resin is compatible with everything.
- Where water or mild chemical service is the concern, the isophthalic family is often the starting point instead.
This guidance identifies a starting grade only. Confirm the final choice against your own process and a trial.
Related application guides
Guides on the processes and applications this family serves.
Tell us which grade you need.
Describe the process, the finished part and its service conditions. Supply, pricing and packaging in Nepal are confirmed on enquiry.