s-Triazine UV absorbers substituted by a benzotriazolyl or benzophenonyl moiety exhibit unexpectedly improved UV absorption characteristics and outstanding efficacy in protecting organic substances from the deleterious effects of actinic radiation as well as good resistance to loss by volatilization during processing of stabilized compositions at elevated temperatures.
                            被苯并三唑或苯并壬基取代的 s-三嗪
紫外线吸收剂出人意料地改善了紫外线吸收特性,在保护有机物免受光辐射的有害影响方面具有出色的功效,并且在高温下加工稳定组合物时具有良好的抗挥发损失能力。