An ultraviolet light absorbing ocular lens comprising a vinyl type copolymer containing from 0.01 to 0.5% by weight of a benzotriazole type ultraviolet light absorbing monomer as chemically bonded therewith, the ultraviolet light absorbing monomer having the formula:
(wherein R₁ is H or CH₃ and n is 2 or 3).
一种紫外线吸收眼镜片,由
乙烯基共聚物组成,其中含有按重量计 0.01%至 0.5%的苯并三唑类紫外线吸收单体,与之
化学键合的紫外线吸收单体具有以下式子:
(其中 R₁ 是 H 或 CH₃,n 是 2 或 3)。