UV-234 is particularly effective for UV stabilization of polymers such as polycarbonate, polyester, polyacetal, polyamide, polyphenylene sulfide, polyphenylene ether, aromatic copolymers, polyurethane thermoplastic elastomers, and polyurethane fibers that require high temperature processing. It can also be applied to polyvinyl chloride and homo/copolymer polystyrene. Processing can include molding, sheet, film and fiber.