申请人:Novartis AG
公开号:US10322993B2
公开(公告)日:2019-06-18
Described herein are dimethyl acetal-containing UV-absorbing compounds and their uses in preparing UV-absorbing polyvinyl alcohol prepolymers suitable for producing UV-absorbing contact lenses capable of blocking ultra-violet (“UV”) radiation and optionally (but preferably) violet radiation with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV radiation and potentially from violet radiation. This invention also provides a UV-absorbing polyvinyl alcohol prepolymer.
本发明描述了含二甲基缩醛的紫外线吸收化合物及其在制备紫外线吸收聚乙烯醇预聚物中的用途,该预聚物适用于生产紫外线吸收隐形眼镜,能够阻挡紫外线("UV")辐射和波长为 380 纳米至 440 纳米的紫外线辐射,从而在一定程度上保护眼睛免受紫外线辐射和潜在紫外线辐射的伤害。本发明还提供了一种紫外线吸收聚乙烯醇预聚物。