Tris-aryl-s-triazines of formula V ##STR1## which contain from one one to three resorcinol derived moieties with at least one of said moieties substituted in the 5-position with a group such as, for example, alkyl or phenylalkyl have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.
具有以下
化学式的三芳基-s-三嗪V,其中包含从一个到三个由
间苯二酚衍生的基团,其中至少一个基团在5-位被取代为诸如烷基或苯基烷基等基团的三芳基-s-三嗪,其紫外光谱向近紫外范围移动,为聚合物基底提供出色的稳定性,抵抗光
化学灯的有害影响。