Ang mga organikong peroxide ay maaaring gamitin bilang polymerization initiators, catalysts, curing agent para sa synthetic resins, at malawakang ginagamit sa paggawa ng expandable polystyrene resins (EPS), methyl methacrylate (MMA), unsaturated polyester resins (UPR), acrylic resins (MA), epoxy resins (EP) at iba pang thermosetting resins.