Back to results
US 12,509,428 B2Granted
Polymerizable fused tricyclic compounds as absorbers of UV and visible light
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsShivkumar Mahadevan, Dawn D. Wright
Life of this patent
Estimating the term…
Abstract
Described are polymerizable fused tricyclic compounds of formula I: wherein R1, R2, R3, m, n, t, and rings B, C, and D are as defined herein. The compounds absorb various wavelengths of ultraviolet and/or visible light (such as high energy visible light) and are suitable for incorporation in a variety of products, such as biomedical devices and ophthalmic devices.
Claims15
A fused tricyclic compound of formula III:
- wherein:
- X is O;
- m, and n are independently 0, 1, 2, 3, or 4;
- R1 and R2 are independently at each occurrence H, an optional substituent, or —Y—Pg, or two adjacent R1 or R2 groups, together with the atoms to which they are attached, combine to form a cycloalkyl or aryl ring optionally substituted with —Y-Pgg;
- EWG at each occurrence is cyano;
- Pg at each occurrence is independently a polymerizable group;
- and
- Y at each occurrence is independently a linking group,
- wherein the compound of formula I contains at least one Pg group.
6 more elements
Dependencies are inferred from the claim text.