G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/22 (2006.01)
Patent
CA 2679938
A composition comprising a polymer backbone and at least one side group, wherein the side group comprises a benzene ring-based chromophore comprising a ketone at the 1- position, a substituted or unsubstituted amino group at the 2-position, and an oxygen atom at the 3-position of the benzene ring having the following formula: wherein R1 is H, an alkyl group, or comprises an amino acid moiety or derivative thereof; R2 and R3 are individually H, alkyl, or any moiety with a vinyl functionality; R4 is an alkyl group, any moiety with a vinyl functionality, a counterpart alkyl.beta.ne group, or a sugar moiety; and X is an optional electron-donating group linked to the benzene ring at the 4, 5, or 6 position. The chromophore is a kynurenine-based compound. Methods of making and using the composition are also provided. The composition can be used in an ophthalmic lens or device for protecting the retina by blocking UV rays and filtering violet rays.
L'invention concerne une composition comprenant un squelette polymère et au moins un groupe latéral, ce dernier comportant un chromophore constitué d'un noyau benzène comprenant une cétone en position 1, un groupe amino substitué ou non en position 2, ainsi qu'un atome d'oxygène en position 3 du noyau benzène. Le chromophore est un composé à base de kynurénine. L'invention concerne également des méthodes de fabrication et d'utilisation de cette composition. La composition peut être utilisée sur des verres ophtalmiques ou des dispositifs destinés à protéger la rétine en bloquant le rayons UV et en filtrant les rayons violets.
Benz Patrick H.
Ors Jose A.
Benz Research And Development Corp.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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