Patent ID: 11958824
Assignee: JOHNSON & JOHNSON VISION CARE, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 3:
4. The compound of claim 1 that is of formula II:, , wherein EWG at each occurrence is independently an electron withdrawing group; n is 1, 2, or 3; and R1 is at each occurrence is independently H, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 thioalkyl, C3-C7 cycloalkyl, aryl, halo, hydroxy, amino, NR3R4, benzyl, SO3H, or SO3M (M is a monovalent cation, such as sodium or potassium), or —Y—Pg, wherein R3 and R4 are independently H or C1-C6 alkyl, Y is a linking group; and Pg is a polymerizable group.