- UV ABSORBING OCULAR LENS
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Ocular lenses having UV absorbing properties are disclosed. The ocular lens comprises a hydrogel polymer comprising polymerised residues derived from a polymerisable UV absorber of formula (I): U-L-Py (I) wherein: U is a UV absorbing moiety; L is a hydrophilic non-polyalkylene glycol linker comprising an anionic, a zwitterionic or a saccharide moiety; and Py is an ethylenically unsaturated polymerisable moiety.
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Page/Page column 51
(2020/07/07)
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- WATER-SOLUBLE UV-ABSORBING COMPOUNDS AND USES THEREOF
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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 optiona
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Page/Page column 45
(2017/06/27)
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- Bisbenzotriazolylphenol compound
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An object of the present invention is to provide a novel bisbenzotriazolylphenol compound having a UV absorving effect. The bisbenzotriazolylphenol compound of the invention is represented by the formula STR1 wherein A is a direct bond or represents a C1-6 alkylene group, a --C(CH3)2 -- group, a --C(C2 H5)(CH3)-- group, a --O-- group or a --NH-- group, R1 and R3 are the same or different and each represent a hydrogen atom, a C1-4 alkyl group, an aryl group, a C1-4 alkoxy group or a halogen atom, and R2 and R4 are the same or different and each represent a hydroxyl group or a C1-12 straight- or branched-chain hydroxyalkyl group.
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