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US 11,820,899 B2Granted
Polymerizable absorbers of UV and high energy visible light
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsShivkumar Mahadevan, Dawn D. Wright
Life of this patent
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Abstract
Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
Claims10
A method for making an ophthalmic device, the method comprising:
- (a) providing a reactive mixture containing one or more device forming monomers, a radical initiator, and a compound of formula I:
- wherein:
- m and n are independently 0, 1, 2, 3, or 4;
- T is a bond, O, or NR;
- X is O, S, NR, SO, or SO2;
- Y is a linking group;
- Pg is a polymerizable group;
- R at each occurrence is independently H, C1-C6 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, or Y—Pg;
- R1 and R2, when present, are independently at each occurrence C1-C6 alkyl, C1-C6 alkoxy, C1-C6 thioalkyl, C3-C7 cycloalkyl, aryl, halo, hydroxy, amino, NR3R4, or benzyl, wherein R3 and R4 are independently H or C1-C6 alkyl, or two adjacent R1 or R2 groups, together with the carbon atoms to which they are attached, combine to form a cycloalkyl or aryl ring;
- and
- EWG is an electron withdrawing group;
- and
- (b) polymerizing the reactive mixture to form the ophthalmic device.
10 more elements
Dependencies are inferred from the claim text.