Compounds that absorb ultraviolet light, methods of their...

Details Compounds that absorb ultraviolet light, methods of their... Compounds that absorb ultraviolet light, methods of their...

C - Chemistry, Metallurgy

07

D

C07D 263/56 (2006.01) C08L 69/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2592585

Compounds of Formula (4) or (5) that absorb ultraviolet light 380 nm to 400 nm range but avoid absorption in the blue light range, thereby imparting yellowness, i.e., 410-420 nm: have suitable refractive characteristics useful in the preparation of optical resins or plastics suitable, for example, for the manufacture of ophthalmic lenses. Methods for making the compounds, optic lenses containing the compounds, and methods for making these are also described.

L'invention concerne des composés absorbant la lumière ultraviolette dans une plage de 380 nm à 400 nm, mais évitant l'absorption dans la plage de la lumière bleue, ce qui permet de conférer un jaunissement, c'est-à-dire, que la lumière comprise entre 410 et 420 nm présente des caractéristiques de réfraction appropriées utiles dans la préparation de résines optiques ou de plastiques optiques conçus, par exemple, pour fabriquer des lentilles ophtalmiques. Les méthodes de fabrication de ces composés et de lentilles optiques contenant ces composés, et des méthodes pour fabriquer ceux-ci sont également décrites dans la description.

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