Unsaturated polyester resins (UPRs) are chemicals made by the condensation of unsaturated acids and diols with or without di-acids. These resins make very durable structures and coatings when they are cross-linked with a vinyl reactive monomer. UPRs are made for a broad range of temperature applications like refrigerated enclosures and hot water geysers, among others. UPRs are employed for making a large variety of products like sanitary ware, tanks ... Read more